Matthew Wilcox [Fri, 26 Oct 2018 22:04:16 +0000 (15:04 -0700)]
x86: convert vdso to use vm_fault_t
Return vm_fault_t codes directly from the appropriate mm routines instead
of converting from errnos ourselves. Fixes a minor bug where we'd return
SIGBUS instead of the correct OOM code if we ran out of memory allocating
page tables.
Link: http://lkml.kernel.org/r/20180828145728.11873-5-willy@infradead.org Signed-off-by: Matthew Wilcox <willy@infradead.org> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Nicolas Pitre <nicolas.pitre@linaro.org> Cc: Souptick Joarder <jrdr.linux@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Oscar Salvador [Fri, 26 Oct 2018 22:03:58 +0000 (15:03 -0700)]
mm/page_alloc.c: clean up check_for_memory()
check_for_memory() looks a bit confusing. First of all, we have this:
if (N_MEMORY == N_NORMAL_MEMORY)
return;
Checking the ENUM declaration, looks like N_MEMORY canot be equal to
N_NORMAL_MEMORY.
I could not find where N_MEMORY is set to N_NORMAL_MEMORY, or the other
way around either, so unless I am missing something, this condition will
never evaluate to true. It makes sense to get rid of it.
Moving forward, the operations within the loop look a bit confusing as
well.
We set N_HIGH_MEMORY unconditionally, and then we set N_NORMAL_MEMORY in
case we have CONFIG_HIGHMEM (N_NORMAL_MEMORY != N_HIGH_MEMORY) and zone <=
ZONE_NORMAL. (N_HIGH_MEMORY falls back to N_NORMAL_MEMORY on
!CONFIG_HIGHMEM systems, and that is why we can just go ahead and set
N_HIGH_MEMORY unconditionally)
Although this works, it is a bit subtle.
I think that this could be easier to follow:
First, we should only set N_HIGH_MEMORY in case we have CONFIG_HIGHMEM.
And then we should set N_NORMAL_MEMORY in case zone <= ZONE_NORMAL,
without further checking whether we have CONFIG_HIGHMEM or not.
Link: http://lkml.kernel.org/r/20180828210158.4617-1-osalvador@techadventures.net Signed-off-by: Oscar Salvador <osalvador@suse.de> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Michael Hocko <mhocko@suse.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Pavel Tatashin <pavel.tatashin@microsoft.com Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Huang Ying [Fri, 26 Oct 2018 22:03:53 +0000 (15:03 -0700)]
mm/swapfile.c: clear si->swap_map[] in swap_free_cluster()
si->swap_map[] of the swap entries in cluster needs to be cleared during
freeing. Previously, this is done in the caller of swap_free_cluster().
This may cause code duplication (one user now, will add more users later)
and lock/unlock cluster unnecessarily. In this patch, the clearing code
is moved to swap_free_cluster() to avoid the downside.
Link: http://lkml.kernel.org/r/20180827075535.17406-4-ying.huang@intel.com Signed-off-by: "Huang, Ying" <ying.huang@intel.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Shaohua Li <shli@kernel.org> Cc: Hugh Dickins <hughd@google.com> Cc: Minchan Kim <minchan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Huang Ying [Fri, 26 Oct 2018 22:03:49 +0000 (15:03 -0700)]
mm/swapfile.c: call free_swap_slot() in __swap_entry_free()
This is a code cleanup patch without functionality change.
Originally, when __swap_entry_free() is called, and its return value is 0,
free_swap_slot() will always be called to free the swap entry to the
per-CPU pool. So move the call to free_swap_slot() to __swap_entry_free()
to simplify the code.
Link: http://lkml.kernel.org/r/20180827075535.17406-3-ying.huang@intel.com Signed-off-by: "Huang, Ying" <ying.huang@intel.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Shaohua Li <shli@kernel.org> Cc: Hugh Dickins <hughd@google.com> Cc: Minchan Kim <minchan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Huang Ying [Fri, 26 Oct 2018 22:03:46 +0000 (15:03 -0700)]
mm/swapfile.c: use __try_to_reclaim_swap() in free_swap_and_cache()
The code path to reclaim the swap entry in free_swap_and_cache() is
almost same as that of __try_to_reclaim_swap(). The largest
difference is just coding style. So the support to the additional
requirement of free_swap_and_cache() is added into
__try_to_reclaim_swap(). free_swap_and_cache() is changed to call
__try_to_reclaim_swap(), and delete the duplicated code. This will
improve code readability and reduce the potential bugs.
There are 2 functionality differences between __try_to_reclaim_swap()
and swap entry reclaim code of free_swap_and_cache().
- free_swap_and_cache() only reclaims the swap entry if the page is
unmapped or swap is getting full. The support has been added into
__try_to_reclaim_swap().
- try_to_free_swap() (called by __try_to_reclaim_swap()) checks
pm_suspended_storage(), while free_swap_and_cache() not. I think
this is OK. Because the page and the swap entry can be reclaimed
later eventually.
Link: http://lkml.kernel.org/r/20180827075535.17406-2-ying.huang@intel.com Signed-off-by: "Huang, Ying" <ying.huang@intel.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Shaohua Li <shli@kernel.org> Cc: Hugh Dickins <hughd@google.com> Cc: Minchan Kim <minchan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
kmemleak: add module param to print warnings to dmesg
Currently, kmemleak only prints the number of suspected leaks to dmesg but
requires the user to read a debugfs file to get the actual stack traces of
the objects' allocation points. Add a module option to print the full
object information to dmesg too. It can be enabled with
kmemleak.verbose=1 on the kernel command line, or "echo 1 >
/sys/module/kmemleak/parameters/verbose":
This allows easier integration of kmemleak into test systems: We have
automated test infrastructure to test our Linux systems. With this
option, running our tests with kmemleak is as simple as enabling kmemleak
and passing this command line option; the test infrastructure knows how to
save kernel logs, which will now include kmemleak reports. Without this
option, the test infrastructure needs to be specifically taught to read
out the kmemleak debugfs file. Removing this need for special handling
makes kmemleak more similar to other kernel debug options (slab debugging,
debug objects, etc).
Link: http://lkml.kernel.org/r/20180903144046.21023-1-vincent.whitchurch@axis.com Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
MMU_INVALIDATE_DOES_NOT_BLOCK flags was the only one used and it is no
longer needed since f4db9358e5c1 ("mm, oom: distinguish blockable mode for
mmu notifiers"). We now have a full support for per range !blocking
behavior so we can drop the stop gap workaround which the per notifier
flag was used for.
Link: http://lkml.kernel.org/r/20180827112623.8992-4-mhocko@kernel.org Signed-off-by: Michal Hocko <mhocko@suse.com> Cc: David Rientjes <rientjes@google.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Jerome Glisse <jglisse@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Michal Hocko [Fri, 26 Oct 2018 22:03:35 +0000 (15:03 -0700)]
mm, mmu_notifier: be explicit about range invalition non-blocking mode
If invalidate_range_start() is called for !blocking mode then all
callbacks have to guarantee they will no block/sleep. The same obviously
applies to invalidate_range_end because this operation pairs with the
former and they are called from the same context. Make sure this is
appropriately documented.
Link: http://lkml.kernel.org/r/20180827112623.8992-3-mhocko@kernel.org Signed-off-by: Michal Hocko <mhocko@suse.com> Reviewed-by: Jerome Glisse <jglisse@redhat.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Rientjes <rientjes@google.com> Cc: Juergen Gross <jgross@suse.com> Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Michal Hocko [Fri, 26 Oct 2018 22:03:31 +0000 (15:03 -0700)]
mm,page_alloc: PF_WQ_WORKER threads must sleep at should_reclaim_retry()
Tetsuo Handa has reported that it is possible to bypass the short sleep
for PF_WQ_WORKER threads which was introduced by commit 0a19bf3c9a041189
("mm, vmstat: allow WQ concurrency to discover memory reclaim doesn't make
any progress") and lock up the system if OOM.
The primary reason is that WQ_MEM_RECLAIM WQs are not guaranteed to run
even when they have a rescuer available. Those workers might be essential
for reclaim to make a forward progress, however. If we are too unlucky
all the allocations requests can get stuck waiting for a WQ_MEM_RECLAIM
work item and the system is essentially stuck in an OOM condition without
much hope to move on. Tetsuo has seen the reclaim stuck on
drain_local_pages_wq or xlog_cil_push_work (xfs). There might be others.
Since should_reclaim_retry() should be a natural reschedule point,
let's do the short sleep for PF_WQ_WORKER threads unconditionally in
order to guarantee that other pending work items are started. This
will workaround this problem and it is less fragile than hunting down
when the sleep is missed. Having a single sleeping point is more
robust.
[akpm@linux-foundation.org: reflow comment to 80 cols to save a couple of lines] Link: http://lkml.kernel.org/r/20180827135101.15700-1-mhocko@kernel.org Signed-off-by: Michal Hocko <mhocko@suse.com> Debugged-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Roman Gushchin <guro@fb.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: David Rientjes <rientjes@google.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Roman Gushchin [Fri, 26 Oct 2018 22:03:27 +0000 (15:03 -0700)]
mm: don't miss the last page because of round-off error
I've noticed, that dying memory cgroups are often pinned in memory by a
single pagecache page. Even under moderate memory pressure they sometimes
stayed in such state for a long time. That looked strange.
My investigation showed that the problem is caused by applying the LRU
pressure balancing math:
Roman Gushchin [Fri, 26 Oct 2018 22:03:23 +0000 (15:03 -0700)]
mm: drain memcg stocks on css offlining
Memcg charge is batched using per-cpu stocks, so an offline memcg can be
pinned by a cached charge up to a moment, when a process belonging to some
other cgroup will charge some memory on the same cpu. In other words,
cached charges can prevent a memory cgroup from being reclaimed for some
time, without any clear need.
Let's optimize it by explicit draining of all stocks on css offlining. As
draining is performed asynchronously, and is skipped if any parallel
draining is happening, it's cheap.
Link: http://lkml.kernel.org/r/20180827162621.30187-2-guro@fb.com Signed-off-by: Roman Gushchin <guro@fb.com> Reviewed-by: Shakeel Butt <shakeelb@google.com> Acked-by: Michal Hocko <mhocko@kernel.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Roman Gushchin [Fri, 26 Oct 2018 22:03:19 +0000 (15:03 -0700)]
mm: rework memcg kernel stack accounting
If CONFIG_VMAP_STACK is set, kernel stacks are allocated using
__vmalloc_node_range() with __GFP_ACCOUNT. So kernel stack pages are
charged against corresponding memory cgroups on allocation and uncharged
on releasing them.
The problem is that we do cache kernel stacks in small per-cpu caches and
do reuse them for new tasks, which can belong to different memory cgroups.
Each stack page still holds a reference to the original cgroup, so the
cgroup can't be released until the vmap area is released.
To make this happen we need more than two subsequent exits without forks
in between on the current cpu, which makes it very unlikely to happen. As
a result, I saw a significant number of dying cgroups (in theory, up to 2
* number_of_cpu + number_of_tasks), which can't be released even by
significant memory pressure.
As a cgroup structure can take a significant amount of memory (first of
all, per-cpu data like memcg statistics), it leads to a noticeable waste
of memory.
Link: http://lkml.kernel.org/r/20180827162621.30187-1-guro@fb.com Fixes: 1282c5ea898e ("fork: Optimize task creation by caching two thread stacks per CPU if CONFIG_VMAP_STACK=y") Signed-off-by: Roman Gushchin <guro@fb.com> Reviewed-by: Shakeel Butt <shakeelb@google.com> Acked-by: Michal Hocko <mhocko@kernel.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Aaron Tomlin [Fri, 26 Oct 2018 22:03:15 +0000 (15:03 -0700)]
slub: extend slub debug to handle multiple slabs
Extend the slub_debug syntax to "slub_debug=<flags>[,<slub>]*", where
<slub> may contain an asterisk at the end. For example, the following
would poison all kmalloc slabs:
slub_debug=P,kmalloc*
and the following would apply the default flags to all kmalloc and all
block IO slabs:
slub_debug=,bio*,kmalloc*
Please note that a similar patch was posted by Iliyan Malchev some time
ago but was never merged:
Dmitry Vyukov [Fri, 26 Oct 2018 22:03:12 +0000 (15:03 -0700)]
mm: don't warn about large allocations for slab
Slub does not call kmalloc_slab() for sizes > KMALLOC_MAX_CACHE_SIZE,
instead it falls back to kmalloc_large().
For slab KMALLOC_MAX_CACHE_SIZE == KMALLOC_MAX_SIZE and it calls
kmalloc_slab() for all allocations relying on NULL return value for
over-sized allocations.
This inconsistency leads to unwanted warnings from kmalloc_slab() for
over-sized allocations for slab. Returning NULL for failed allocations is
the expected behavior.
Make slub and slab code consistent by checking size >
KMALLOC_MAX_CACHE_SIZE in slab before calling kmalloc_slab().
While we are here also fix the check in kmalloc_slab(). We should check
against KMALLOC_MAX_CACHE_SIZE rather than KMALLOC_MAX_SIZE. It all kinda
worked because for slab the constants are the same, and slub always checks
the size against KMALLOC_MAX_CACHE_SIZE before kmalloc_slab(). But if we
get there with size > KMALLOC_MAX_CACHE_SIZE anyhow bad things will
happen. For example, in case of a newly introduced bug in slub code.
Also move the check in kmalloc_slab() from function entry to the size >
192 case. This partially compensates for the additional check in slab
code and makes slub code a bit faster (at least theoretically).
Also drop __GFP_NOWARN in the warning check. This warning means a bug in
slab code itself, user-passed flags have nothing to do with it.
Nothing of this affects slob.
Link: http://lkml.kernel.org/r/20180927171502.226522-1-dvyukov@gmail.com Signed-off-by: Dmitry Vyukov <dvyukov@google.com> Reported-by: syzbot+87829a10073277282ad1@syzkaller.appspotmail.com Reported-by: syzbot+ef4e8fc3a06e9019bb40@syzkaller.appspotmail.com Reported-by: syzbot+6e438f4036df52cbb863@syzkaller.appspotmail.com Reported-by: syzbot+8574471d8734457d98aa@syzkaller.appspotmail.com Reported-by: syzbot+af1504df0807a083dbd9@syzkaller.appspotmail.com Acked-by: Christoph Lameter <cl@linux.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Shevchenko [Fri, 26 Oct 2018 22:03:06 +0000 (15:03 -0700)]
mm/slub.c: switch to bitmap_zalloc()
Switch to bitmap_zalloc() to show clearly what we are allocating. Besides
that it returns pointer of bitmap type instead of opaque void *.
Link: http://lkml.kernel.org/r/20180830104301.61649-1-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Christoph Lameter <cl@linux.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Tested-by: David Rientjes <rientjes@google.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
YueHaibing [Fri, 26 Oct 2018 22:02:56 +0000 (15:02 -0700)]
ocfs2: remove set but not used variable 'rb'
Fixes gcc '-Wunused-but-set-variable' warning:
fs/ocfs2/refcounttree.c: In function 'ocfs2_create_reflink_node':
fs/ocfs2/refcounttree.c:4138:31: warning:
variable 'rb' set but not used [-Wunused-but-set-variable]
Link: http://lkml.kernel.org/r/1536198443-113047-1-git-send-email-yuehaibing@huawei.com Signed-off-by: YueHaibing <yuehaibing@huawei.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Mark Fasheh <mark@fasheh.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Joseph Qi <jiangqi903@gmail.com> Cc: Changwei Ge <ge.changwei@h3c.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jia-Ju Bai [Fri, 26 Oct 2018 22:02:52 +0000 (15:02 -0700)]
fs/ocfs2/dlm/dlmdebug.c: fix a sleep-in-atomic-context bug in dlm_print_one_mle()
The kernel module may sleep with holding a spinlock.
The function call paths (from bottom to top) in Linux-4.16 are:
[FUNC] get_zeroed_page(GFP_NOFS)
fs/ocfs2/dlm/dlmdebug.c, 332: get_zeroed_page in dlm_print_one_mle
fs/ocfs2/dlm/dlmmaster.c, 240: dlm_print_one_mle in __dlm_put_mle
fs/ocfs2/dlm/dlmmaster.c, 255: __dlm_put_mle in dlm_put_mle
fs/ocfs2/dlm/dlmmaster.c, 254: spin_lock in dlm_put_ml
[FUNC] get_zeroed_page(GFP_NOFS)
fs/ocfs2/dlm/dlmdebug.c, 332: get_zeroed_page in dlm_print_one_mle
fs/ocfs2/dlm/dlmmaster.c, 240: dlm_print_one_mle in __dlm_put_mle
fs/ocfs2/dlm/dlmmaster.c, 222: __dlm_put_mle in dlm_put_mle_inuse
fs/ocfs2/dlm/dlmmaster.c, 219: spin_lock in dlm_put_mle_inuse
To fix this bug, GFP_NOFS is replaced with GFP_ATOMIC.
This bug is found by my static analysis tool DSAC.
Link: http://lkml.kernel.org/r/20180901112528.27025-1-baijiaju1990@gmail.com Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Mark Fasheh <mark@fasheh.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Joseph Qi <jiangqi903@gmail.com> Cc: Changwei Ge <ge.changwei@h3c.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Colin Ian King [Fri, 26 Oct 2018 22:02:45 +0000 (15:02 -0700)]
ocfs2: remove unused pointer 'eb'
Pointer 'eb' is being assigned but is never used hence it is
redundant and can be removed.
Cleans up clang warning:
warning: variable 'eb' set but not used [-Wunused-but-set-variable]
Link: http://lkml.kernel.org/r/20180828141907.10826-1-colin.king@canonical.com Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Mark Fasheh <mark@fasheh.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Joseph Qi <jiangqi903@gmail.com> Cc: Changwei Ge <ge.changwei@h3c.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Clang warns when more than one set of parentheses is used for a
single conditional statement:
fs/ocfs2/dlm/dlmthread.c:534:18: warning: equality comparison with extraneous
parentheses [-Wparentheses-equality]
if ((res->owner == dlm->node_num)) {
~~~~~~~~~~~^~~~~~~~~~~~~~~~
fs/ocfs2/dlm/dlmthread.c:534:18: note: remove extraneous parentheses around the
comparison to silence this warning
if ((res->owner == dlm->node_num)) {
~ ^ ~
Link: http://lkml.kernel.org/r/20180924181929.6853-1-natechancellor@gmail.com Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Reported-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrey Ryabinin [Fri, 26 Oct 2018 22:02:34 +0000 (15:02 -0700)]
lib/test_kasan.c: add tests for several string/memory API functions
Arch code may have asm implementation of string/memory API functions
instead of using generic one from lib/string.c. KASAN don't see memory
accesses in asm code, thus can miss many bugs.
E.g. on ARM64 KASAN don't see bugs in memchr(), memcmp(), str[r]chr(),
str[n]cmp(), str[n]len(). Add tests for these functions to be sure that
we notice the problem on other architectures.
Link: http://lkml.kernel.org/r/20180920135631.23833-3-aryabinin@virtuozzo.com Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Kyeongdon Kim <kyeongdon.kim@lge.com> Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrey Ryabinin [Fri, 26 Oct 2018 22:02:30 +0000 (15:02 -0700)]
arm64: lib: use C string functions with KASAN enabled
ARM64 has asm implementation of memchr(), memcmp(), str[r]chr(),
str[n]cmp(), str[n]len(). KASAN don't see memory accesses in asm code,
thus it can potentially miss many bugs.
Ifdef out __HAVE_ARCH_* defines of these functions when KASAN is enabled,
so the generic implementations from lib/string.c will be used.
We can't just remove the asm functions because efistub uses them. And we
can't have two non-weak functions either, so declare the asm functions as
weak.
Link: http://lkml.kernel.org/r/20180920135631.23833-2-aryabinin@virtuozzo.com Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Reported-by: Kyeongdon Kim <kyeongdon.kim@lge.com> Cc: Alexander Potapenko <glider@google.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrey Ryabinin [Fri, 26 Oct 2018 22:02:27 +0000 (15:02 -0700)]
include/linux/linkage.h: align weak symbols
Since WEAK() supposed to be used instead of ENTRY() to define weak
symbols, but unlike ENTRY() it doesn't have ALIGN directive. It seems
there is no actual reason to not have, so let's add ALIGN to WEAK() too.
Link: http://lkml.kernel.org/r/20180920135631.23833-1-aryabinin@virtuozzo.com Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Will Deacon <will.deacon@arm.com>, Catalin Marinas <catalin.marinas@arm.com> Cc: Kyeongdon Kim <kyeongdon.kim@lge.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
userfaultfd: disable irqs when taking the waitqueue lock
userfaultfd contains howe-grown locking of the waitqueue lock, and does
not disable interrupts. This relies on the fact that no one else takes it
from interrupt context and violates an invariat of the normal waitqueue
locking scheme. With aio poll it is easy to trigger other locks that
disable interrupts (or are called from interrupt context).
Link: http://lkml.kernel.org/r/20181018154101.18750-1-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Andrea Arcangeli <aarcange@redhat.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: <stable@vger.kernel.org> [4.19.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Here, vma->vm_file is NULL. mss->check_shmem_swap should be false in that
case, however for smaps_rollup, smap_gather_stats() can set the flag true
for one vma and leave it true for subsequent vma's where it should be
false.
To fix, reset the check_shmem_swap flag to false. There's also related
bug which sets mss->swap to shmem_swapped, which in the context of
smaps_rollup overwrites any value accumulated from previous vma's. Fix
that as well.
Note that the report suggests a regression between 4.17.19 and 4.19-rc7,
which makes the 4.19 series ending with commit 2c058326072c ("mm:
/proc/pid/smaps_rollup: convert to single value seq_file") suspicious.
But the mss was reused for rollup since ce6cd7fa7adf ("mm: add
/proc/pid/smaps_rollup") so let's play it safe with the stable backport.
Linus Torvalds [Fri, 26 Oct 2018 16:11:43 +0000 (09:11 -0700)]
Merge tag 'char-misc-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver updates from Greg KH:
"Here is the big set of char/misc patches for 4.20-rc1.
Loads of things here, we have new code in all of these driver
subsystems:
- fpga
- stm
- extcon
- nvmem
- eeprom
- hyper-v
- gsmi
- coresight
- thunderbolt
- vmw_balloon
- goldfish
- soundwire
along with lots of fixes and minor changes to other small drivers.
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (245 commits)
Documentation/security-bugs: Clarify treatment of embargoed information
lib: Fix ia64 bootloader linkage
MAINTAINERS: Clarify UIO vs UIOVEC maintainer
docs/uio: fix a grammar nitpick
docs: fpga: document programming fpgas using regions
fpga: add devm_fpga_region_create
fpga: bridge: add devm_fpga_bridge_create
fpga: mgr: add devm_fpga_mgr_create
hv_balloon: Replace spin_is_locked() with lockdep
sgi-xp: Replace spin_is_locked() with lockdep
eeprom: New ee1004 driver for DDR4 memory
eeprom: at25: remove unneeded 'at25_remove'
w1: IAD Register is yet readable trough iad sys file. Fix snprintf (%u for unsigned, count for max size).
misc: mic: scif: remove set but not used variables 'src_dma_addr, dst_dma_addr'
misc: mic: fix a DMA pool free failure
platform: goldfish: pipe: Add a blank line to separate varibles and code
platform: goldfish: pipe: Remove redundant casting
platform: goldfish: pipe: Call misc_deregister if init fails
platform: goldfish: pipe: Move the file-scope goldfish_pipe_dev variable into the driver state
platform: goldfish: pipe: Move the file-scope goldfish_pipe_miscdev variable into the driver state
...
Linus Torvalds [Fri, 26 Oct 2018 15:42:25 +0000 (08:42 -0700)]
Merge tag 'driver-core-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here is a small number of driver core patches for 4.20-rc1.
Not much happened here this merge window, only a very tiny number of
patches that do:
- add BUS_ATTR_WO() for use by drivers
- component error path fixes
- kernfs range check fix
- other tiny error path fixes and const changes
All of these have been in linux-next with no reported issues for a
while"
* tag 'driver-core-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
devres: provide devm_kstrdup_const()
mm: move is_kernel_rodata() to asm-generic/sections.h
devres: constify p in devm_kfree()
driver core: add BUS_ATTR_WO() macro
kernfs: Fix range checks in kernfs_get_target_path
component: fix loop condition to call unbind() if bind() fails
drivers/base/devtmpfs.c: don't pretend path is const in delete_path
kernfs: update comment about kernfs_path() return value
Linus Torvalds [Fri, 26 Oct 2018 15:14:13 +0000 (08:14 -0700)]
Merge tag 'usb-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/PHY updates from Greg KH:
"Here is the big USB/PHY driver patches for 4.20-rc1
Lots of USB changes in here, primarily in these areas:
- typec updates and new drivers
- new PHY drivers
- dwc2 driver updates and additions (this old core keeps getting
added to new devices.)
- usbtmc major update based on the industry group coming together and
working to add new features and performance to the driver.
- USB gadget additions for new features
- USB gadget configfs updates
- chipidea driver updates
- other USB gadget updates
- USB serial driver updates
- renesas driver updates
- xhci driver updates
- other tiny USB driver updates
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (229 commits)
usb: phy: ab8500: silence some uninitialized variable warnings
usb: xhci: tegra: Add genpd support
usb: xhci: tegra: Power-off power-domains on removal
usbip:vudc: BUG kmalloc-2048 (Not tainted): Poison overwritten
usbip: tools: fix atoi() on non-null terminated string
USB: misc: appledisplay: fix backlight update_status return code
phy: phy-pxa-usb: add a new driver
usb: host: add DT bindings for faraday fotg2
usb: host: ohci-at91: fix request of irq for optional gpio
usb/early: remove set but not used variable 'remain_length'
usb: typec: Fix copy/paste on typec_set_vconn_role() kerneldoc
usb: typec: tcpm: Report back negotiated PPS voltage and current
USB: core: remove set but not used variable 'udev'
usb: core: fix memory leak on port_dev_path allocation
USB: net2280: Remove ->disconnect() callback from net2280_pullup()
usb: dwc2: disable power_down on rockchip devices
usb: gadget: udc: renesas_usb3: add support for r8a77990
dt-bindings: usb: renesas_usb3: add bindings for r8a77990
usb: gadget: udc: renesas_usb3: Add r8a774a1 support
USB: serial: cypress_m8: remove set but not used variable 'iflag'
...
Linus Torvalds [Fri, 26 Oct 2018 14:38:19 +0000 (07:38 -0700)]
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe:
"This has been a smaller cycle with many of the commits being smallish
code fixes and improvements across the drivers.
- Driver updates for bnxt_re, cxgb4, hfi1, hns, mlx5, nes, qedr, and
rxe
- Memory window support in hns
- mlx5 user API 'flow mutate/steering' allows accessing the full
packet mangling and matching machinery from user space
- Support inter-working with verbs API calls in the 'devx' mlx5 user
API, and provide options to use devx with less privilege
- Modernize the use of syfs and the device interface to use attribute
groups and cdev properly for uverbs, and clean up some of the core
code's device list management
- More progress on net namespaces for RDMA devices
- Consolidate driver BAR mmapping support into core code helpers and
rework how RDMA holds poitners to mm_struct for get_user_pages
cases
- First pass to use 'dev_name' instead of ib_device->name
- Device renaming for RDMA devices"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (242 commits)
IB/mlx5: Add support for extended atomic operations
RDMA/core: Fix comment for hw stats init for port == 0
RDMA/core: Refactor ib_register_device() function
RDMA/core: Fix unwinding flow in case of error to register device
ib_srp: Remove WARN_ON in srp_terminate_io()
IB/mlx5: Allow scatter to CQE without global signaled WRs
IB/mlx5: Verify that driver supports user flags
IB/mlx5: Support scatter to CQE for DC transport type
RDMA/drivers: Use core provided API for registering device attributes
RDMA/core: Allow existing drivers to set one sysfs group per device
IB/rxe: Remove unnecessary enum values
RDMA/umad: Use kernel API to allocate umad indexes
RDMA/uverbs: Use kernel API to allocate uverbs indexes
RDMA/core: Increase total number of RDMA ports across all devices
IB/mlx4: Add port and TID to MAD debug print
IB/mlx4: Enable debug print of SMPs
RDMA/core: Rename ports_parent to ports_kobj
RDMA/core: Do not expose unsupported counters
IB/mlx4: Refer to the device kobject instead of ports_parent
RDMA/nldev: Allow IB device rename through RDMA netlink
...
Linus Torvalds [Fri, 26 Oct 2018 01:01:29 +0000 (18:01 -0700)]
Merge tag 'riscv-for-linus-4.20-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux
Pull RISC-V updates from Palmer Dabbelt:
"This patch set contains a lot (at least, for me) of improvements to
the RISC-V kernel port:
- The removal of some cacheinfo values that were bogus.
- On systems with F but without D the kernel will not show the F
extension to userspace, as it isn't actually supported.
- Support for futexes.
- Removal of some unused code.
- Cleanup of some menuconfig entries.
- Support for systems without a floating-point unit, and for building
kernels that will never use the floating-point unit.
- More fixes to the RV32I port, which regressed again. It's really
time to get this into a regression test somewhere so I stop
breaking it. Thanks to Zong for resurrecting it again!
- Various fixes that resulted from a year old review of our original
patch set that I finally got around to.
- Various improvements to SMP support, largely based around having
switched to logical hart numbering, as well as some interrupt
improvements. This one is in the same patch set as above, thanks to
Atish for sheparding everything though as my patch set was a bit of
a mess.
I'm pretty sure this is our largest patch set since the original
kernel contribution, and it's certainly the one with the most
contributors. While I don't have anything else I know I'm going to
submit for the merge window, I would be somewhat surprised if I didn't
screw anything up.
Thanks for the help, everyone!"
* tag 'riscv-for-linus-4.20-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux: (31 commits)
RISC-V: Cosmetic menuconfig changes
riscv: move GCC version check for ARCH_SUPPORTS_INT128 to Kconfig
RISC-V: remove the unused return_to_handler export
RISC-V: Add futex support.
RISC-V: Add FP register ptrace support for gdb.
RISC-V: Mask out the F extension on systems without D
RISC-V: Don't set cacheinfo.{physical_line_partition,attributes}
RISC-V: Show IPI stats
RISC-V: Show CPU ID and Hart ID separately in /proc/cpuinfo
RISC-V: Use Linux logical CPU number instead of hartid
RISC-V: Add logical CPU indexing for RISC-V
RISC-V: Use WRITE_ONCE instead of direct access
RISC-V: Use mmgrab()
RISC-V: Rename im_okay_therefore_i_am to found_boot_cpu
RISC-V: Rename riscv_of_processor_hart to riscv_of_processor_hartid
RISC-V: Provide a cleaner raw_smp_processor_id()
RISC-V: Disable preemption before enabling interrupts
RISC-V: Comment on the TLB flush in smp_callin()
RISC-V: Filter ISA and MMU values in cpuinfo
RISC-V: Don't set cacheinfo.{physical_line_partition,attributes}
...
Linus Torvalds [Fri, 26 Oct 2018 00:57:35 +0000 (17:57 -0700)]
Merge tag 'kvm-4.20-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM updates from Radim Krčmář:
"ARM:
- Improved guest IPA space support (32 to 52 bits)
- RAS event delivery for 32bit
- PMU fixes
- Guest entry hardening
- Various cleanups
- Port of dirty_log_test selftest
PPC:
- Nested HV KVM support for radix guests on POWER9. The performance
is much better than with PR KVM. Migration and arbitrary level of
nesting is supported.
- Disable nested HV-KVM on early POWER9 chips that need a particular
hardware bug workaround
- One VM per core mode to prevent potential data leaks
- PCI pass-through optimization
- merge ppc-kvm topic branch and kvm-ppc-fixes to get a better base
s390:
- Initial version of AP crypto virtualization via vfio-mdev
- Improvement for vfio-ap
- Set the host program identifier
- Optimize page table locking
x86:
- Enable nested virtualization by default
- Implement Hyper-V IPI hypercalls
- Improve #PF and #DB handling
- Allow guests to use Enlightened VMCS
- Add migration selftests for VMCS and Enlightened VMCS
- Allow coalesced PIO accesses
- Add an option to perform nested VMCS host state consistency check
through hardware
- Automatic tuning of lapic_timer_advance_ns
- Many fixes, minor improvements, and cleanups"
* tag 'kvm-4.20-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (204 commits)
KVM/nVMX: Do not validate that posted_intr_desc_addr is page aligned
Revert "kvm: x86: optimize dr6 restore"
KVM: PPC: Optimize clearing TCEs for sparse tables
x86/kvm/nVMX: tweak shadow fields
selftests/kvm: add missing executables to .gitignore
KVM: arm64: Safety check PSTATE when entering guest and handle IL
KVM: PPC: Book3S HV: Don't use streamlined entry path on early POWER9 chips
arm/arm64: KVM: Enable 32 bits kvm vcpu events support
arm/arm64: KVM: Rename function kvm_arch_dev_ioctl_check_extension()
KVM: arm64: Fix caching of host MDCR_EL2 value
KVM: VMX: enable nested virtualization by default
KVM/x86: Use 32bit xor to clear registers in svm.c
kvm: x86: Introduce KVM_CAP_EXCEPTION_PAYLOAD
kvm: vmx: Defer setting of DR6 until #DB delivery
kvm: x86: Defer setting of CR2 until #PF delivery
kvm: x86: Add payload operands to kvm_multiple_exception
kvm: x86: Add exception payload fields to kvm_vcpu_events
kvm: x86: Add has_payload and payload to kvm_queued_exception
KVM: Documentation: Fix omission in struct kvm_vcpu_events
KVM: selftests: add Enlightened VMCS test
...
Linus Torvalds [Fri, 26 Oct 2018 00:15:46 +0000 (17:15 -0700)]
Merge branch 'for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup updates from Tejun Heo:
"All trivial changes - simplification, typo fix and adding
cond_resched() in a netclassid update loop"
* 'for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup, netclassid: add a preemption point to write_classid
rdmacg: fix a typo in rdmacg documentation
cgroup: Simplify cgroup_ancestor
Linus Torvalds [Fri, 26 Oct 2018 00:11:52 +0000 (17:11 -0700)]
Merge tag 'printk-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk
Pull printk updates from Petr Mladek:
- Fix two more locations where printf formatting leaked pointers
- Better log_buf_len parameter handling
- Add prefix to messages from printk code
- Do not miss messages on other consoles when the log is replayed on a
new one
- Reduce race between console registration and panic() when the log
might get replayed on all consoles
- Some cont buffer code clean up
- Call console only when there is something to do (log vs cont buffer)
* tag 'printk-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk:
lib/vsprintf: Hash printed address for netdev bits fallback
lib/vsprintf: Hash legacy clock addresses
lib/vsprintf: Prepare for more general use of ptr_to_id()
lib/vsprintf: Make ptr argument conts in ptr_to_id()
printk: fix integer overflow in setup_log_buf()
printk: do not preliminary split up cont buffer
printk: lock/unlock console only for new logbuf entries
printk: keep kernel cont support always enabled
printk: Give error on attempt to set log buffer length to over 2G
printk: Add KBUILD_MODNAME and remove a redundant print prefix
printk: Correct wrong casting
printk: Fix panic caused by passing log_buf_len to command line
printk: CON_PRINTBUFFER console registration is a bit racy
printk: Do not miss new messages when replaying the log
Linus Torvalds [Thu, 25 Oct 2018 23:43:35 +0000 (16:43 -0700)]
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
"API:
- Remove VLA usage
- Add cryptostat user-space interface
- Add notifier for new crypto algorithms
Algorithms:
- Add OFB mode
- Remove speck
Drivers:
- Remove x86/sha*-mb as they are buggy
- Remove pcbc(aes) from x86/aesni
- Improve performance of arm/ghash-ce by up to 85%
- Implement CTS-CBC in arm64/aes-blk, faster by up to 50%
- Remove PMULL based arm64/crc32 driver
- Use PMULL in arm64/crct10dif
- Add aes-ctr support in s5p-sss
- Add caam/qi2 driver
Others:
- Pick better transform if one becomes available in crc-t10dif"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (124 commits)
crypto: chelsio - Update ntx queue received from cxgb4
crypto: ccree - avoid implicit enum conversion
crypto: caam - add SPDX license identifier to all files
crypto: caam/qi - simplify CGR allocation, freeing
crypto: mxs-dcp - make symbols 'sha1_null_hash' and 'sha256_null_hash' static
crypto: arm64/aes-blk - ensure XTS mask is always loaded
crypto: testmgr - fix sizeof() on COMP_BUF_SIZE
crypto: chtls - remove set but not used variable 'csk'
crypto: axis - fix platform_no_drv_owner.cocci warnings
crypto: x86/aes-ni - fix build error following fpu template removal
crypto: arm64/aes - fix handling sub-block CTS-CBC inputs
crypto: caam/qi2 - avoid double export
crypto: mxs-dcp - Fix AES issues
crypto: mxs-dcp - Fix SHA null hashes and output length
crypto: mxs-dcp - Implement sha import/export
crypto: aegis/generic - fix for big endian systems
crypto: morus/generic - fix for big endian systems
crypto: lrw - fix rebase error after out of bounds fix
crypto: cavium/nitrox - use pci_alloc_irq_vectors() while enabling MSI-X.
crypto: cavium/nitrox - NITROX command queue changes.
...
Linus Torvalds [Thu, 25 Oct 2018 20:32:00 +0000 (13:32 -0700)]
Merge branch 'next-loadpin' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull LoadPin updates from James Morris:
"From Kees: This is a small reporting improvement and the param change
needed for the ordering series (but since the loadpin change is
desired and separable, I'm putting it here)"
* 'next-loadpin' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
LoadPin: Rename boot param "enabled" to "enforce"
LoadPin: Report friendly block device name
Linus Torvalds [Thu, 25 Oct 2018 20:29:51 +0000 (13:29 -0700)]
Merge branch 'next-smack' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull smack updates from James Morris:
"From Casey: three patches for Smack for 4.20. Two clean up warnings
and one is a rarely encountered ptrace capability check"
* 'next-smack' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
Smack: Mark expected switch fall-through
Smack: ptrace capability use fixes
Smack: remove set but not used variable 'root_inode'
Linus Torvalds [Thu, 25 Oct 2018 20:25:18 +0000 (13:25 -0700)]
Merge branch 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull TPM updates from James Morris:
"From Jarkko: The only new feature is non-blocking operation for
/dev/tpm0"
* 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
tpm: Restore functionality to xen vtpm driver.
tpm: add support for nonblocking operation
tpm: add ptr to the tpm_space struct to file_priv
tpm: Make SECURITYFS a weak dependency
tpm: suppress transmit cmd error logs when TPM 1.2 is disabled/deactivated
tpm: fix response size validation in tpm_get_random()
Linus Torvalds [Thu, 25 Oct 2018 20:22:23 +0000 (13:22 -0700)]
Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull integrity updates from James Morris:
"From Mimi: This contains a couple of bug fixes, including one for a
recent problem with calculating file hashes on overlayfs, and some
code cleanup"
* 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
MAINTAINERS: add Jarkko as maintainer for trusted keys
ima: open a new file instance if no read permissions
ima: fix showing large 'violations' or 'runtime_measurements_count'
security/integrity: remove unnecessary 'init_keyring' variable
security/integrity: constify some read-only data
vfs: require i_size <= SIZE_MAX in kernel_read_file()
Linus Torvalds [Thu, 25 Oct 2018 19:55:31 +0000 (12:55 -0700)]
Merge branch 'work.lookup' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull more ->lookup() cleanups from Al Viro:
"Some ->lookup() instances are still overcomplicating the life
for themselves, open-coding the stuff that would be handled by
d_splice_alias() just fine.
Simplify a couple of such cases caught this cycle and document
d_splice_alias() intended use"
* 'work.lookup' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
Document d_splice_alias() calling conventions for ->lookup() users.
simplify btrfs_lookup()
clean erofs_lookup()
Linus Torvalds [Thu, 25 Oct 2018 19:52:10 +0000 (12:52 -0700)]
Merge branch 'work.alpha' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull alpha syscall glue updates from Al Viro:
"Two old patches making alpha syscall glue a bit less mysterious"
* 'work.alpha' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
alpha: unify the glue for sigreturn-like syscalls
alpha: use alpha_ni_syscall only for syscall zero
Linus Torvalds [Thu, 25 Oct 2018 19:48:22 +0000 (12:48 -0700)]
Merge branch 'work.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull compat_ioctl fixes from Al Viro:
"A bunch of compat_ioctl fixes, mostly in bluetooth.
Hopefully, most of fs/compat_ioctl.c will get killed off over the next
few cycles; between this, tty series already merged and Arnd's work
this cycle ought to take a good chunk out of the damn thing..."
* 'work.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
hidp: fix compat_ioctl
hidp: constify hidp_connection_add()
cmtp: fix compat_ioctl
bnep: fix compat_ioctl
compat_ioctl: trim the pointless includes
Linus Torvalds [Thu, 25 Oct 2018 18:43:47 +0000 (11:43 -0700)]
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq updates from Thomas Gleixner:
"The interrupt brigade came up with the following updates:
- Driver for the Marvell System Error Interrupt machinery
- Overhaul of the GIC-V3 ITS driver
- Small updates and fixes all over the place"
* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits)
genirq: Fix race on spurious interrupt detection
softirq: Fix typo in __do_softirq() comments
genirq: Fix grammar s/an /a /
irqchip/gic: Unify GIC priority definitions
irqchip/gic-v3: Remove acknowledge loop
dt-bindings/interrupt-controller: Add documentation for Marvell SEI controller
dt-bindings/interrupt-controller: Update Marvell ICU bindings
irqchip/irq-mvebu-icu: Add support for System Error Interrupts (SEI)
arm64: marvell: Enable SEI driver
irqchip/irq-mvebu-sei: Add new driver for Marvell SEI
irqchip/irq-mvebu-icu: Support ICU subnodes
irqchip/irq-mvebu-icu: Disociate ICU and NSR
irqchip/irq-mvebu-icu: Clarify the reset operation of configured interrupts
irqchip/irq-mvebu-icu: Fix wrong private data retrieval
dt-bindings/interrupt-controller: Fix Marvell ICU length in the example
genirq/msi: Allow creation of a tree-based irqdomain for platform-msi
dt-bindings: irqchip: renesas-irqc: Document r8a7744 support
dt-bindings: irqchip: renesas-irqc: Document R-Car E3 support
irqchip/pdc: Setup all edge interrupts as rising edge at GIC
irqchip/gic-v3-its: Allow use of LPI tables in reserved memory
...
David S. Miller [Thu, 25 Oct 2018 17:36:19 +0000 (10:36 -0700)]
sparc: Fix VDSO build with older binutils.
Older versions of bintutils do not allow symbol math across different
segments on sparc:
====================
Assembler messages:
99: Error: operation combines symbols in different segments
====================
This is controlled by whether or not DIFF_EXPR_OK is defined in
gas/config/tc-*.h and for sparc this was not the case until mid-2017.
So we have to patch between %stick and %tick another way.
Do what powerpc does and emit two versions of the relevant functions,
one using %tick and one using %stick, and patch the symbols in the
dynamic symbol table.
Fixes: 7278ea185753 ("sparc: Improve VDSO instruction patching.") Reported-by: Meelis Roos <mroos@linux.ee> Tested-by: Meelis Roos <mroos@linux.ee> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Thu, 25 Oct 2018 16:00:15 +0000 (09:00 -0700)]
Merge tag 'sound-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"There have been little changes in ALSA core stuff, but ASoC core still
kept rolling for the continued restructuring. The rest are lots of
small driver-specific changes and some minor API updates. Here are
highlights:
General:
- Appropriate fall-through annotations everywhere
- Some code cleanup in memalloc code, handling non-cacahed pages more
commonly in the helper
- Deployment of SNDRV_PCM_INFO_SYNC_APPLPTR flag consistently
Drivers:
- More HD-audio CA0132 codec improvement for supporting other Creative
boards
- Plumbing legacy HD-audio codecs as ASoC BE on Intel SST; this will
give move support of existing HD-audio devices with DSP
- A few device-specific HD-audio quirks as usual
- New quirk for RME CC devices and correction for B&W PX for USB-audio
- FireWire: code refactoring including devres usages
ASoC Core:
- Continued componentization works; it's almost done!
- A bunch of new for_each_foo macros
- Cleanups and fixes in DAPM code
ASoC Drivers:
- MCLK support for several different devices, including CS42L51, STM32
SAI, and MAX98373
- Support for Allwinner A64 CODEC analog, Intel boards with DA7219 and
MAX98927, Meson AXG PDM inputs, Nuvoton NAU8822, Renesas R8A7744 and
TI PCM3060"
* tag 'sound-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (299 commits)
ASoC: stm32: sai: fix master clock naming
ASoC: stm32: add clock dependency for sai
ALSA: hda/ca0132 - Actually fix microphone issue
ASoC: sun4i-i2s: move code from startup/shutdown hooks into pm_runtime hooks
ASoC: wm2000: Remove wm2000_read helper function
ASoC: cs42l51: fix mclk support
ASoC: wm_adsp: Log addresses as 8 digits in wm_adsp_buffer_populate
ASoC: wm_adsp: Rename memory fields in wm_adsp_buffer
ASoC: cs42l51: add mclk support
ASoC: stm32: sai: set sai as mclk clock provider
ASoC: dt-bindings: add mclk support to cs42l51
ASoC: dt-bindings: add mclk provider support to stm32 sai
ASoC: soc-core: fix trivial checkpatch issues
ASoC: dapm: Add support for hw_free on CODEC to CODEC links
ASoC: Intel: kbl_da7219_max98927: minor white space clean up
ALSA: i2c/cs8427: Fix int to char conversion
ALSA: doc: Brush up the old writing-an-alsa-driver
ASoC: rsnd: tidyup SSICR::SWSP for TDM
ASoC: rsnd: enable TDM settings for SSI parent
ASoC: pcm3168a: add hw constraint for capture channel
...
Linus Torvalds [Thu, 25 Oct 2018 14:40:30 +0000 (07:40 -0700)]
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"This is mostly updates of the usual drivers: UFS, esp_scsi, NCR5380,
qla2xxx, lpfc, libsas, hisi_sas.
In addition there's a set of mostly small updates to the target
subsystem a set of conversions to the generic DMA API, which do have
some potential for issues in the older drivers but we'll handle those
as case by case fixes.
A new myrs driver for the DAC960/mylex raid controllers to replace the
block based DAC960 which is also being removed by Jens in this merge
window.
Plus the usual slew of trivial changes"
[ "myrs" stands for "MYlex Raid Scsi". Obviously. Silly of me to even
wonder. There's also a "myrb" driver, where the 'b' stands for
'block'. Truly, somebody has got mad naming skillz. - Linus ]
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (237 commits)
scsi: myrs: Fix the processor absent message in processor_show()
scsi: myrs: Fix a logical vs bitwise bug
scsi: hisi_sas: Fix NULL pointer dereference
scsi: myrs: fix build failure on 32 bit
scsi: fnic: replace gross legacy tag hack with blk-mq hack
scsi: mesh: switch to generic DMA API
scsi: ips: switch to generic DMA API
scsi: smartpqi: fully convert to the generic DMA API
scsi: vmw_pscsi: switch to generic DMA API
scsi: snic: switch to generic DMA API
scsi: qla4xxx: fully convert to the generic DMA API
scsi: qla2xxx: fully convert to the generic DMA API
scsi: qla1280: switch to generic DMA API
scsi: qedi: fully convert to the generic DMA API
scsi: qedf: fully convert to the generic DMA API
scsi: pm8001: switch to generic DMA API
scsi: nsp32: switch to generic DMA API
scsi: mvsas: fully convert to the generic DMA API
scsi: mvumi: switch to generic DMA API
scsi: mpt3sas: switch to generic DMA API
...
Linus Torvalds [Thu, 25 Oct 2018 13:40:00 +0000 (06:40 -0700)]
Merge tag 'edac_for_4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
Pull EDAC updates from Borislav Petkov:
"The EDAC tree was busier than usual this cycle as the shortlog below
shows.
Also, this pull request is carrying an ACPI DSM driver which is used
to ask the platform to supply the DIMM location of a reported hardware
error and thus simplify all the EDAC logic when trying to map the
error address to the respective DIMM.
Core EDAC updates:
- amd64_edac: AMD family 0x17, models 0x10-0x2f support (Michael Jin)
Hygon Dhyana support (Pu Wen)
- sb_edac: New maintainer + fixes (Tony Luck) Error reporting
improvements and fixes (Qiuxu Zhuo)
- ghes_edac: SMBIOS handle type 17 for DIMM locating and per-DIMM
error accounting (Fan Wu)
- altera_edac: Stratix10 support and refactoring (Thor Thayer)
Out of tree addition:
- acpi_adxl: Address Translation interface using an ACPI DSM (Tony
Luck)
- the usual amount of other misc fixes and cleanups all over"
* tag 'edac_for_4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp: (22 commits)
ACPI/ADXL: Add address translation interface using an ACPI DSM
EDAC, thunderx: Fix memory leak in thunderx_l2c_threaded_isr()
EDAC, skx_edac: Fix logical channel intermediate decoding
EDAC, {i7core,sb,skx}_edac: Fix uncorrected error counting
EDAC, altera: Work around int-to-pointer-cast warnings
EDAC, amd64: Add Hygon Dhyana support
EDAC: Raise the maximum number of memory controllers
arm64: dts: stratix10: Add peripheral EDAC nodes
EDAC, altera: Add Stratix10 peripheral support
EDAC, altera: Merge Stratix10 into the Arria10 SDRAM probe routine
arm64: dts: stratix10: Add SDRAM node
EDAC, altera: Combine Stratix10 and Arria10 probe functions
arm64: dts: stratix10: Additions to EDAC System Manager
EDAC, i7core: Remove set but not used variable pvt
EDAC, ghes: Use CPER module handles to locate DIMMs
EDAC: Correct DIMM capacity unit symbol
EDAC, sb_edac: Fix signedness bugs in *_get_ha() functions
EDAC, sb_edac: Fix reporting for patrol scrubber errors
EDAC, sb_edac: Return early on ADDRV bit and address type test
MAINTAINERS: Update maintainer for drivers/edac/sb_edac.c
...
Linus Torvalds [Thu, 25 Oct 2018 13:31:56 +0000 (06:31 -0700)]
Merge tag 'libnvdimm-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Dan Williams:
- Improve the efficiency and performance of reading nvdimm-namespace
labels. Reduce the amount of label data read at driver load time by a
few orders of magnitude. Reduce heavyweight call-outs to
platform-firmware routines.
- Handle media errors located in the 'struct page' array stored on a
persistent memory namespace. Let the kernel clear these errors rather
than an awkward userspace workaround.
- Fix Address Range Scrub (ARS) completion tracking. Correct occasions
where the kernel indicates completion of ARS before submission.
- Add support for reporting an nvdimm dirty-shutdown-count via sysfs.
- Fix various small libnvdimm core and uapi issues.
* tag 'libnvdimm-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (21 commits)
acpi, nfit: Further restrict userspace ARS start requests
acpi, nfit: Fix Address Range Scrub completion tracking
UAPI: ndctl: Remove use of PAGE_SIZE
UAPI: ndctl: Fix g++-unsupported initialisation in headers
tools/testing/nvdimm: Populate dirty shutdown data
acpi, nfit: Collect shutdown status
acpi, nfit: Introduce nfit_mem flags
libnvdimm, label: Fix sparse warning
nvdimm: Use namespace index data to reduce number of label reads needed
nvdimm: Split label init out from the logic for getting config data
nvdimm: Remove empty if statement
nvdimm: Clarify comment in sizeof_namespace_index
nvdimm: Sanity check labeloff
libnvdimm, dimm: Maximize label transfer size
libnvdimm, pmem: Fix badblocks population for 'raw' namespaces
libnvdimm, namespace: Drop the repeat assignment for variable dev->parent
libnvdimm, region: Fail badblocks listing for inactive regions
libnvdimm, pfn: during init, clear errors in the metadata area
libnvdimm: Set device node in nd_device_register
libnvdimm: Hold reference on parent while scheduling async init
...
Linus Torvalds [Thu, 25 Oct 2018 13:28:08 +0000 (06:28 -0700)]
Merge tag 'for-v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull power supply and reset updates from Sebastian Reichel:
- Add Spreadtrum SC2731 charger driver
- bq25890-charger: Add BQ25896 support
- bq27xxx-battery: Add support for BQ27411
- qcom-pon: Add pms405 pon support
- cros-charger: add support for dedicated port
- misc fixes
* tag 'for-v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (28 commits)
power: max8925: mark expected switch fall-through
power: supply: fix spelling mistake "Gauage" -> "Gauge"
power: reset: qcom-pon: Add pms405 pon support
power: supply: bq27xxx: Add support for BQ27411
power: supply: Add Spreadtrum SC2731 charger support
dt-bindings: power: Add Spreadtrum SC2731 charger documentation
power: supply: twl4030_charger: disable eoc interrupt on linear charge
power: supply: twl4030_charger: fix charging current out-of-bounds
power: supply: bq25890_charger: fix semicolon.cocci warnings
power: supply: max8998-charger: Fix platform data retrieval
power: supply: cros: add support for dedicated port
mfd: cros: add charger port count command definition
power: reset: at91-poweroff: do not procede if at91_shdwc is allocated
power: reset: at91-poweroff: rename at91_shdwc_base member of struct shdwc
power: reset: at91-poweroff: make sclk part of struct shdwc
power: reset: at91-poweroff: make mpddrc_base part of struct shdwc
power: reset: at91-poweroff: use only one poweroff function
power: reset: at91-poweroff: switch to slow clock before shutdown
power: reset: convert to SPDX identifiers
power: supply: ab8500_fg: silence uninitialized variable warnings
...
Linus Torvalds [Thu, 25 Oct 2018 13:23:07 +0000 (06:23 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Pull HID updates from Jiri Kosina:
- rumble support for Xbox One S, from Andrey Smirnov
- high-resolution support for Logitech mice, from Harry Cutts
- support for recent devices requiring the HID parse to be able to cope
with tag report sizes > 256
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (35 commits)
HID: usbhid: Add quirk for Redragon/Dragonrise Seymur 2
HID: wacom: Work around HID descriptor bug in DTK-2451 and DTH-2452
HID: google: add dependency on Cros EC for Hammer
HID: elan: fix spelling mistake "registred" -> "registered"
HID: google: drop superfluous const before SIMPLE_DEV_PM_OPS()
HID: google: add support tablet mode switch for Whiskers
mfd: cros: add "base attached" MKBP switch definition
Input: reserve 2 events code because of HID
HID: magicmouse: add support for Apple Magic Trackpad 2
HID: i2c-hid: override HID descriptors for certain devices
HID: hid-bigbenff: driver for BigBen Interactive PS3OFMINIPAD gamepad
HID: logitech: fix a used uninitialized GCC warning
HID: intel-ish-hid: using list_head for ipc write queue
HID: intel-ish-hid: use resource-managed api
HID: intel_ish-hid: Enhance API to get ring buffer sizes
HID: intel-ish-hid: use helper function to search client id
HID: intel-ish-hid: ishtp: add helper function for client search
HID: intel-ish-hid: use helper function to access client buffer
HID: intel-ish-hid: ishtp: add helper functions for client buffer operation
HID: intel-ish-hid: use helper function for private driver data set/get
...
Linus Torvalds [Wed, 24 Oct 2018 17:01:11 +0000 (18:01 +0100)]
Merge tag 'docs-4.20' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"This is a fairly typical cycle for documentation. There's some welcome
readability improvements for the formatted output, some LICENSES
updates including the addition of the ISC license, the removal of the
unloved and unmaintained 00-INDEX files, the deprecated APIs document
from Kees, more MM docs from Mike Rapoport, and the usual pile of typo
fixes and corrections"
* tag 'docs-4.20' of git://git.lwn.net/linux: (41 commits)
docs: Fix typos in histogram.rst
docs: Introduce deprecated APIs list
kernel-doc: fix declaration type determination
doc: fix a typo in adding-syscalls.rst
docs/admin-guide: memory-hotplug: remove table of contents
doc: printk-formats: Remove bogus kobject references for device nodes
Documentation: preempt-locking: Use better example
dm flakey: Document "error_writes" feature
docs/completion.txt: Fix a couple of punctuation nits
LICENSES: Add ISC license text
LICENSES: Add note to CDDL-1.0 license that it should not be used
docs/core-api: memory-hotplug: add some details about locking internals
docs/core-api: rename memory-hotplug-notifier to memory-hotplug
docs: improve readability for people with poorer eyesight
yama: clarify ptrace_scope=2 in Yama documentation
docs/vm: split memory hotplug notifier description to Documentation/core-api
docs: move memory hotplug description into admin-guide/mm
doc: Fix acronym "FEKEK" in ecryptfs
docs: fix some broken documentation references
iommu: Fix passthrough option documentation
...
Linus Torvalds [Wed, 24 Oct 2018 16:42:24 +0000 (17:42 +0100)]
Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o:
- further restructure ext4 documentation
- fix up ext4's delayed allocation for bigalloc file systems
- fix up some syzbot-detected races in EXT4_IOC_MOVE_EXT,
EXT4_IOC_SWAP_BOOT, and ext4_remount
- ... and a few other miscellaneous bugs and optimizations.
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (21 commits)
ext4: fix use-after-free race in ext4_remount()'s error path
ext4: cache NULL when both default_acl and acl are NULL
docs: promote the ext4 data structures book to top level
docs: move ext4 administrative docs to admin-guide/
jbd2: fix use after free in jbd2_log_do_checkpoint()
ext4: propagate error from dquot_initialize() in EXT4_IOC_FSSETXATTR
ext4: fix setattr project check in fssetxattr ioctl
docs: make ext4 readme tables readable
docs: fix ext4 documentation table formatting problems
docs: generate a separate ext4 pdf file from the documentation
ext4: convert fault handler to use vm_fault_t type
ext4: initialize retries variable in ext4_da_write_inline_data_begin()
ext4: fix EXT4_IOC_SWAP_BOOT
ext4: fix build error when DX_DEBUG is defined
ext4: fix argument checking in EXT4_IOC_MOVE_EXT
ext4: fix reserved cluster accounting at page invalidation time
ext4: adjust reserved cluster count when removing extents
ext4: reduce reserved cluster count by number of allocated clusters
ext4: fix reserved cluster accounting at delayed write time
ext4: add new pending reservation mechanism
...
Linus Torvalds [Wed, 24 Oct 2018 16:39:36 +0000 (17:39 +0100)]
Merge tag 'f2fs-for-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim:
"In this round, we've added 1) superblock checksum feature, 2)
implemented new mount option which we can disable/enable checkpoint to
provide atomic updates of entire filesystem, 3) refactored quota
operations to enhance its consistency along with checkpoint, 4) fixed
subtle IO hang conditions and roll-forward recovery flow to resurrect
any fsync'ed inode metadata.
Enhancements:
- add checksum to keep superblock contents more safe
- add checkpoint=disable/enable to support A/B update of entire filesystem
- use plug for readahead IO in readdir
- add more IO counts to avoid block layer hacks
Bug fixes:
- prevent data corruption issue for hardware encryption
- fix IO hang issues when GC is heavily triggered
- add missing up_read in __write_node_page
- recover inode metadata during roll-forward recovery flow
- fix null pointer dereference issue in wrongly configured discard map
There are some more sanity checks and minor bug fixes as well"
* tag 'f2fs-for-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (62 commits)
f2fs: fix to keep project quota consistent
f2fs: guarantee journalled quota data by checkpoint
f2fs: cleanup dirty pages if recover failed
f2fs: fix data corruption issue with hardware encryption
f2fs: fix to recover inode->i_flags of inode block during POR
f2fs: spread f2fs_set_inode_flags()
f2fs: fix to spread clear_cold_data()
Revert "f2fs: fix to clear PG_checked flag in set_page_dirty()"
f2fs: account read IOs and use IO counts for is_idle
f2fs: fix to account IO correctly for cgroup writeback
f2fs: fix to account IO correctly
f2fs: remove request_list check in is_idle()
f2fs: allow to mount, if quota is failed
f2fs: update REQ_TIME in f2fs_cross_rename()
f2fs: do not update REQ_TIME in case of error conditions
f2fs: remove unneeded disable_nat_bits()
f2fs: remove unused sbi->trigger_ssr_threshold
f2fs: shrink sbi->sb_lock coverage in set_file_temperature()
f2fs: use rb_*_cached friends
f2fs: fix to recover cold bit of inode block during POR
...
Linus Torvalds [Wed, 24 Oct 2018 16:36:12 +0000 (17:36 +0100)]
Merge tag 'xfs-4.20-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pul xfs updates from Dave Chinner:
"There's not a huge amount of change in this cycle - Darrick has been
out of action for a couple of months (hence me sending the last few
pull requests), so we decided a quiet cycle mainly focussed on bug
fixes was a good idea. Darrick will take the helm again at the end of
this merge window.
FYI, I may be sending another update later in the cycle - there's a
pending rework of the clone/dedupe_file_range code that fixes numerous
bugs that is spread amongst the VFS, XFS and ocfs2 code. It has been
reviewed and tested, Al and I just need to work out the details of the
merge, so it may come from him rather than me.
Summary:
- only support filesystems with unwritten extents
- add definition for statfs XFS magic number
- remove unused parameters around reflink code
- more debug for dangling delalloc extents
- cancel COW extents on extent swap targets
- fix quota stats output and clean up the code
- refactor some of the attribute code in preparation for parent
pointers
- fix several buffer handling bugs"
* tag 'xfs-4.20-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (21 commits)
xfs: cancel COW blocks before swapext
xfs: clear ail delwri queued bufs on unmount of shutdown fs
xfs: use offsetof() in place of offset macros for __xfsstats
xfs: Fix xqmstats offsets in /proc/fs/xfs/xqmstat
xfs: fix use-after-free race in xfs_buf_rele
xfs: Add attibute remove and helper functions
xfs: Add attibute set and helper functions
xfs: Add helper function xfs_attr_try_sf_addname
xfs: Move fs/xfs/xfs_attr.h to fs/xfs/libxfs/xfs_attr.h
xfs: issue log message on user force shutdown
xfs: fix buffer state management in xrep_findroot_block
xfs: always assign buffer verifiers when one is provided
xfs: xrep_findroot_block should reject root blocks with siblings
xfs: add a define for statfs magic to uapi
xfs: print dangling delalloc extents
xfs: fix fork selection in xfs_find_trim_cow_extent
xfs: remove the unused trimmed argument from xfs_reflink_trim_around_shared
xfs: remove the unused shared argument to xfs_reflink_reserve_cow
xfs: handle zeroing in xfs_file_iomap_begin_delay
xfs: remove suport for filesystems without unwritten extent flag
...
Linus Torvalds [Wed, 24 Oct 2018 16:30:39 +0000 (17:30 +0100)]
Merge tag 'gfs2-4.20.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
Pull gfs2 updates from Bob Peterson:
"We've got 18 patches for this merge window, none of which are very
major:
- clean up the gfs2 block allocator to prepare for future performance
enhancements (Andreas Gruenbacher)
- fix a use-after-free problem (Andy Price)
- patches that fix gfs2's broken rgrplvb mount option (me)
- cleanup patches and error message improvements (me)
- enable getlabel support (Steve Whitehouse and Abhi Das)
- flush the glock delete workqueue at exit (Tim Smith)"
* tag 'gfs2-4.20.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
gfs2: Fix minor typo: couln't versus couldn't.
gfs2: write revokes should traverse sd_ail1_list in reverse
gfs2: Pass resource group to rgblk_free
gfs2: Remove unnecessary gfs2_rlist_alloc parameter
gfs2: Fix marking bitmaps non-full
gfs2: Fix some minor typos
gfs2: Rename bitmap.bi_{len => bytes}
gfs2: Remove unused RGRP_RSRV_MINBYTES definition
gfs2: Move rs_{sizehint, rgd_gh} fields into the inode
gfs2: Clean up out-of-bounds check in gfs2_rbm_from_block
gfs2: Always check the result of gfs2_rbm_from_block
gfs2: getlabel support
GFS2: Flush the GFS2 delete workqueue before stopping the kernel threads
gfs2: Don't leave s_fs_info pointing to freed memory in init_sbd
gfs2: Use fs_* functions instead of pr_* function where we can
gfs2: slow the deluge of io error messages
gfs2: Don't set GFS2_RDF_UPTODATE when the lvb is updated
gfs2: improve debug information when lvb mismatches are found
Linus Torvalds [Wed, 24 Oct 2018 16:28:03 +0000 (17:28 +0100)]
Merge tag 'for-linus-4.20-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux
Pull orangefs updates from Mike Marshall:
"Fixes and a cleanup.
Fixes:
- fix superfluous service_operation return code check in
orangefs_lookup
- fix some error code paths that missed kmem_cache_free
- don't let orangefs_iget return NULL
- don't let orangefs_new_inode return NULL
- cache NULL when both default_acl and acl are NULL
Cleanup:
- rate limit the client not running info message"
* tag 'for-linus-4.20-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux:
orangefs: no need to check for service_operation returns > 0
orangefs: some error code paths missed kmem_cache_free
orangefs: don't let orangefs_iget return NULL.
orangefs: don't let orangefs_new_inode return NULL
orangefs: rate limit the client not running info message
orangefs: cache NULL when both default_acl and acl are NULL
Linus Torvalds [Wed, 24 Oct 2018 16:24:04 +0000 (17:24 +0100)]
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro.
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
gfs2_meta: ->mount() can get NULL dev_name
ecryptfs_rename(): verify that lower dentries are still OK after lock_rename()
cachefiles: fix the race between cachefiles_bury_object() and rmdir(2)
Linus Torvalds [Wed, 24 Oct 2018 16:22:16 +0000 (17:22 +0100)]
Merge tag 'jfs-for-4.20' of git://github.com/kleikamp/linux-shaggy
Pull jfs updates from David Kleikamp:
"Just a few small fixes"
* tag 'jfs-for-4.20' of git://github.com/kleikamp/linux-shaggy:
jfs: remove redundant dquot_initialize() in jfs_evict_inode()
jfs: remove quota option from ignore list
jfs: cache NULL when both default_acl and acl are NULL
Linus Torvalds [Wed, 24 Oct 2018 16:15:26 +0000 (17:15 +0100)]
Merge tag 'for-4.20-part1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba:
"This is the first batch with fixes and some nice performance
improvements.
Preliminary results show eg. more files/sec in fsmark, better perf on
multi-threaded workloads (filebench, dbench), fewer context switches
and overall better memory allocation characteristics (multiple
benchmarks).
Apart from general performance, there's an improvement for qgroups +
balance workload that's been troubling our users.
Note for stable: there are 20+ patches tagged for stable, out of 90.
Not all of them apply cleanly on all stable versions but the conflicts
are mostly due to simple cleanups and resolving should be obvious. The
fixes are otherwise independent.
Performance improvements:
- transition between blocking and spinning modes of path is gone,
which originally resulted to more unnecessary wakeups and updates
to the path locks, the effects are measurable and improve latency
and scalability
- qgroups: first batch of changes that should speedup balancing with
qgroups on, skip quota accounting on unchanged subtrees, overall
gain is about 30+% in runtime
- use rb-tree with cached first node for several structures, small
improvement to avoid pointer chasing
Fixes:
- trim
- fix: some blockgroups could have been missed if their logical
address was past the total filesystem size (ie. after a lot of
balancing)
- better error reporting, after processing blockgroups and whole
device
- fix: continue trimming block groups after an error is
encountered
- check for trim support of the device earlier and avoid some
unnecessary work
- less interaction with transaction commit that improves latency
on slower storage (eg. image files over NFS)
- fsync
- fix warning when replaying log after fsync of a O_TMPFILE
- fix wrong dentries after fsync of file that got its parent
replaced
- qgroups: fix rescan that might misc some dirty groups
- don't clean dirty pages during buffered writes, this could lead to
lost updates in some corner cases
- some block groups could have been delayed in creation, if the
allocation triggered another one
- error handling improvements
Cleanups:
- removed unused struct members and variables
- function return type cleanups
- delayed refs code refactoring
- protect against deadlock that could be caused by crafted image that
tries to allocate from a tree that's locked already"
* tag 'for-4.20-part1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (93 commits)
btrfs: switch return_bigger to bool in find_ref_head
btrfs: remove fs_info from btrfs_should_throttle_delayed_refs
btrfs: remove fs_info from btrfs_check_space_for_delayed_refs
btrfs: delayed-ref: pass delayed_refs directly to btrfs_delayed_ref_lock
btrfs: delayed-ref: pass delayed_refs directly to btrfs_select_ref_head
btrfs: qgroup: move the qgroup->members check out from (!qgroup)'s else branch
btrfs: relocation: Remove redundant tree level check
btrfs: relocation: Cleanup while loop using rbtree_postorder_for_each_entry_safe
btrfs: qgroup: Avoid calling qgroup functions if qgroup is not enabled
Btrfs: fix wrong dentries after fsync of file that got its parent replaced
Btrfs: fix warning when replaying log after fsync of a tmpfile
btrfs: drop min_size from evict_refill_and_join
btrfs: assert on non-empty delayed iputs
btrfs: make sure we create all new block groups
btrfs: reset max_extent_size on clear in a bitmap
btrfs: protect space cache inode alloc with GFP_NOFS
btrfs: release metadata before running delayed refs
Btrfs: kill btrfs_clear_path_blocking
btrfs: dev-replace: remove pointless assert in write unlock
btrfs: dev-replace: move replace members out of fs_info
...
Linus Torvalds [Wed, 24 Oct 2018 13:43:41 +0000 (14:43 +0100)]
Merge branch 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull tty ioctl updates from Al Viro:
"This is the compat_ioctl work related to tty ioctls.
Quite a bit of dead code taken out, all tty-related stuff gone from
fs/compat_ioctl.c. A bunch of compat bugs fixed - some still remain,
but all more or less generic tty-related ioctls should be covered
(remaining issues are in things like driver-private ioctls in a pcmcia
serial card driver not getting properly handled in 32bit processes on
64bit host, etc)"
* 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (53 commits)
kill TIOCSERGSTRUCT
change semantics of ldisc ->compat_ioctl()
kill TIOCSER[SG]WILD
synclink_gt(): fix compat_ioctl()
pty: fix compat ioctls
compat_ioctl - kill keyboard ioctl handling
gigaset: add ->compat_ioctl()
vt_compat_ioctl(): clean up, use compat_ptr() properly
gigaset: don't try to printk userland buffer contents
dgnc: don't bother with (empty) stub for TCXONC
dgnc: leave TIOC[GS]SOFTCAR to ldisc
remove fallback to drivers for TIOCGICOUNT
dgnc: break-related ioctls won't reach ->ioctl()
kill the rest of tty COMPAT_IOCTL() entries
dgnc: TIOCM... won't reach ->ioctl()
isdn_tty: TCSBRK{,P} won't reach ->ioctl()
kill capinc_tty_ioctl()
take compat TIOC[SG]SERIAL treatment into tty_compat_ioctl()
synclink: reduce pointless checks in ->ioctl()
complete ->[sg]et_serial() switchover
...
Linus Torvalds [Wed, 24 Oct 2018 10:49:35 +0000 (11:49 +0100)]
Merge branch 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull security subsystem updates from James Morris:
"In this patchset, there are a couple of minor updates, as well as some
reworking of the LSM initialization code from Kees Cook (these prepare
the way for ordered stackable LSMs, but are a valuable cleanup on
their own)"
* 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
LSM: Don't ignore initialization failures
LSM: Provide init debugging infrastructure
LSM: Record LSM name in struct lsm_info
LSM: Convert security_initcall() into DEFINE_LSM()
vmlinux.lds.h: Move LSM_TABLE into INIT_DATA
LSM: Convert from initcall to struct lsm_info
LSM: Remove initcall tracing
LSM: Rename .security_initcall section to .lsm_info
vmlinux.lds.h: Avoid copy/paste of security_init section
LSM: Correctly announce start of LSM initialization
security: fix LSM description location
keys: Fix the use of the C++ keyword "private" in uapi/linux/keyctl.h
seccomp: remove unnecessary unlikely()
security: tomoyo: Fix obsolete function
security/capabilities: remove check for -EINVAL
Linus Torvalds [Wed, 24 Oct 2018 10:47:32 +0000 (11:47 +0100)]
Merge tag 'selinux-pr-20181022' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull SELinux updates from Paul Moore:
"Three SELinux patches for v4.20, all fall under the bug-fix or
behave-better category, which is good. All three have pretty good
descriptions too, which is even better"
* tag 'selinux-pr-20181022' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: Add __GFP_NOWARN to allocation at str_read()
selinux: refactor mls_context_to_sid() and make it stricter
selinux: fix mounting of cgroup2 under older policies
KarimAllah Ahmed [Sat, 20 Oct 2018 21:42:59 +0000 (23:42 +0200)]
KVM/nVMX: Do not validate that posted_intr_desc_addr is page aligned
The spec only requires the posted interrupt descriptor address to be
64-bytes aligned (i.e. bits[0:5] == 0). Using page_address_valid also
forces the address to be page aligned.
Only validate that the address does not cross the maximum physical address
without enforcing a page alignment.
Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: x86@kernel.org Cc: kvm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Fixes: 9969469d957 ("nVMX x86: check posted-interrupt descriptor addresss on vmentry of L2") Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de> Reviewed-by: Jim Mattson <jmattson@google.com> Reviewed-by: Krish Sadhuhan <krish.sadhukhan@oracle.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Linus Torvalds [Wed, 24 Oct 2018 10:22:39 +0000 (11:22 +0100)]
Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull siginfo updates from Eric Biederman:
"I have been slowly sorting out siginfo and this is the culmination of
that work.
The primary result is in several ways the signal infrastructure has
been made less error prone. The code has been updated so that manually
specifying SEND_SIG_FORCED is never necessary. The conversion to the
new siginfo sending functions is now complete, which makes it
difficult to send a signal without filling in the proper siginfo
fields.
At the tail end of the patchset comes the optimization of decreasing
the size of struct siginfo in the kernel from 128 bytes to about 48
bytes on 64bit. The fundamental observation that enables this is by
definition none of the known ways to use struct siginfo uses the extra
bytes.
This comes at the cost of a small user space observable difference.
For the rare case of siginfo being injected into the kernel only what
can be copied into kernel_siginfo is delivered to the destination, the
rest of the bytes are set to 0. For cases where the signal and the
si_code are known this is safe, because we know those bytes are not
used. For cases where the signal and si_code combination is unknown
the bits that won't fit into struct kernel_siginfo are tested to
verify they are zero, and the send fails if they are not.
I made an extensive search through userspace code and I could not find
anything that would break because of the above change. If it turns out
I did break something it will take just the revert of a single change
to restore kernel_siginfo to the same size as userspace siginfo.
Testing did reveal dependencies on preferring the signo passed to
sigqueueinfo over si->signo, so bit the bullet and added the
complexity necessary to handle that case.
Testing also revealed bad things can happen if a negative signal
number is passed into the system calls. Something no sane application
will do but something a malicious program or a fuzzer might do. So I
have fixed the code that performs the bounds checks to ensure negative
signal numbers are handled"
* 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (80 commits)
signal: Guard against negative signal numbers in copy_siginfo_from_user32
signal: Guard against negative signal numbers in copy_siginfo_from_user
signal: In sigqueueinfo prefer sig not si_signo
signal: Use a smaller struct siginfo in the kernel
signal: Distinguish between kernel_siginfo and siginfo
signal: Introduce copy_siginfo_from_user and use it's return value
signal: Remove the need for __ARCH_SI_PREABLE_SIZE and SI_PAD_SIZE
signal: Fail sigqueueinfo if si_signo != sig
signal/sparc: Move EMT_TAGOVF into the generic siginfo.h
signal/unicore32: Use force_sig_fault where appropriate
signal/unicore32: Generate siginfo in ucs32_notify_die
signal/unicore32: Use send_sig_fault where appropriate
signal/arc: Use force_sig_fault where appropriate
signal/arc: Push siginfo generation into unhandled_exception
signal/ia64: Use force_sig_fault where appropriate
signal/ia64: Use the force_sig(SIGSEGV,...) in ia64_rt_sigreturn
signal/ia64: Use the generic force_sigsegv in setup_frame
signal/arm/kvm: Use send_sig_mceerr
signal/arm: Use send_sig_fault where appropriate
signal/arm: Use force_sig_fault where appropriate
...
Linus Torvalds [Wed, 24 Oct 2018 07:11:35 +0000 (08:11 +0100)]
net/kconfig: Make QCOM_QMI_HELPERS available when COMPILE_TEST
The networking merge brought in the experimental support for the
Qualcomm ath10k system NOC, which selects QCOM_QMI_HELPERS as a
dependency.
But the ATH10K_SNOC option (which selects QCOM_QMI_HELPERS) depends on
ARCH_QCOM || COMPILE_TEST in order to get wider build testing than just
the unusual QCOM architecture build, while the QCOM_QMI_HELPERS option
doesn't have that COMPILE_TEST option and is limited to only ARCH_QCOM.
As a result, a "make allmodconfig" complains
WARNING: unmet direct dependencies detected for QCOM_QMI_HELPERS
Depends on [n]: ARCH_QCOM && NET [=y]
Selected by [m]:
- ATH10K_SNOC [=m] && NETDEVICES [=y] && WLAN [=y] && WLAN_VENDOR_ATH [=y] && ATH10K [=m] && (ARCH_QCOM || COMPILE_TEST [=y])
Fix the config-time warning by making QCOM_QMI_HELPERS available when
COMPILE_TEST, since the result seems to build fine.
Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Cc: Govind Singh <govinds@codeaurora.org> Cc: Kalle Valo <kvalo@codeaurora.org> Cc: David Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1) Add VF IPSEC offload support in ixgbe, from Shannon Nelson.
2) Add zero-copy AF_XDP support to i40e, from Björn Töpel.
3) All in-tree drivers are converted to {g,s}et_link_ksettings() so we
can get rid of the {g,s}et_settings ethtool callbacks, from Michal
Kubecek.
4) Add software timestamping to veth driver, from Michael Walle.
5) More work to make packet classifiers and actions lockless, from Vlad
Buslov.
6) Support sticky FDB entries in bridge, from Nikolay Aleksandrov.
7) Add ipv6 version of IP_MULTICAST_ALL sockopt, from Andre Naujoks.
8) Support batching of XDP buffers in vhost_net, from Jason Wang.
9) Add flow dissector BPF hook, from Petar Penkov.
10) i40e vf --> generic iavf conversion, from Jesse Brandeburg.
11) Add NLA_REJECT netlink attribute policy type, to signal when users
provide attributes in situations which don't make sense. From
Johannes Berg.
12) Switch TCP and fair-queue scheduler over to earliest departure time
model. From Eric Dumazet.
13) Improve guest receive performance by doing rx busy polling in tx
path of vhost networking driver, from Tonghao Zhang.
14) Add per-cgroup local storage to bpf
15) Add reference tracking to BPF, from Joe Stringer. The verifier can
now make sure that references taken to objects are properly released
by the program.
16) Support in-place encryption in TLS, from Vakul Garg.
17) Add new taprio packet scheduler, from Vinicius Costa Gomes.
18) Lots of selftests additions, too numerous to mention one by one here
but all of which are very much appreciated.
19) Support offloading of eBPF programs containing BPF to BPF calls in
nfp driver, frm Quentin Monnet.
20) Move dpaa2_ptp driver out of staging, from Yangbo Lu.
21) Lots of u32 classifier cleanups and simplifications, from Al Viro.
22) Add new strict versions of netlink message parsers, and enable them
for some situations. From David Ahern.
23) Evict neighbour entries on carrier down, also from David Ahern.
24) Support BPF sk_msg verdict programs with kTLS, from Daniel Borkmann
and John Fastabend.
25) Add support for filtering route dumps, from David Ahern.
26) New igc Intel driver for 2.5G parts, from Sasha Neftin et al.
27) Allow vxlan enslavement to bridges in mlxsw driver, from Ido
Schimmel.
28) Add queue and stack map types to eBPF, from Mauricio Vasquez B.
29) Add back byte-queue-limit support to r8169, with all the bug fixes
in other areas of the driver it works now! From Florian Westphal and
Heiner Kallweit.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2147 commits)
tcp: add tcp_reset_xmit_timer() helper
qed: Fix static checker warning
Revert "be2net: remove desc field from be_eq_obj"
Revert "net: simplify sock_poll_wait"
net: socionext: Reset tx queue in ndo_stop
net: socionext: Add dummy PHY register read in phy_write()
net: socionext: Stop PHY before resetting netsec
net: stmmac: Set OWN bit for jumbo frames
arm64: dts: stratix10: Support Ethernet Jumbo frame
tls: Add maintainers
net: ethernet: ti: cpsw: unsync mcast entries while switch promisc mode
octeontx2-af: Support for NIXLF's UCAST/PROMISC/ALLMULTI modes
octeontx2-af: Support for setting MAC address
octeontx2-af: Support for changing RSS algorithm
octeontx2-af: NIX Rx flowkey configuration for RSS
octeontx2-af: Install ucast and bcast pkt forwarding rules
octeontx2-af: Add LMAC channel info to NIXLF_ALLOC response
octeontx2-af: NPC MCAM and LDATA extract minimal configuration
octeontx2-af: Enable packet length and csum validation
octeontx2-af: Support for VTAG strip and capture
...
Eric Dumazet [Tue, 23 Oct 2018 18:54:16 +0000 (11:54 -0700)]
tcp: add tcp_reset_xmit_timer() helper
With EDT model, SRTT no longer is inflated by pacing delays.
This means that RTO and some other xmit timers might be setup
incorrectly. This is particularly visible with either :
- Very small enforced pacing rates (SO_MAX_PACING_RATE)
- Reduced rto (from the default 200 ms)
This can lead to TCP flows aborts in the worst case,
or spurious retransmits in other cases.
For example, this session gets far more throughput
than the requested 80kbit :
$ netperf -H 127.0.0.2 -l 100 -- -q 10000
MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 127.0.0.2 () port 0 AF_INET
Recv Send Send
Socket Socket Message Elapsed
Size Size Size Time Throughput
bytes bytes bytes secs. 10^6bits/sec
540000 262144 262144 104.00 2.66
With the fix :
$ netperf -H 127.0.0.2 -l 100 -- -q 10000
MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 127.0.0.2 () port 0 AF_INET
Recv Send Send
Socket Socket Message Elapsed
Size Size Size Time Throughput
bytes bytes bytes secs. 10^6bits/sec
540000 262144 262144 104.00 0.12
EDT allows for better control of rtx timers, since TCP has
a better idea of the earliest departure time of each skb
in the rtx queue. We only have to eventually add to the
timer the difference of the EDT time with current time.
Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
If a cgroup has many tasks with many open file descriptors then we would
end up in a large loop without any rescheduling point throught the
operation. Add cond_resched once per task.
Signed-off-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Tejun Heo <tj@kernel.org>
Linus Torvalds [Tue, 23 Oct 2018 19:02:03 +0000 (20:02 +0100)]
Merge branch 'parisc-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:
"Lots of small fixes and enhancements, most noteably:
- Many TLB and cache flush optimizations (Dave)
- Fixed HPMC/crash handler on 64-bit kernel (Dave and myself)
- Added alternative infrastructre. The kernel now live-patches itself
for various situations, e.g. replace SMP code when running on one
CPU only or drop cache flushes when system has no cache installed.
- vmlinuz now contains a full copy of the compressed vmlinux file.
This simplifies debugging the currently booted kernel.
- Unused driver removal (Christoph)
- Reduced warnings of Dino PCI bridge when running in qemu
- Removed gcc version check (Masahiro)"
* 'parisc-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: (23 commits)
parisc: Retrieve and display the PDC PAT capabilities
parisc: Optimze cache flush algorithms
parisc: Remove pte_inserted define
parisc: Add PDC PAT cell_info() and pd_get_pdc_revisions() functions
parisc: Drop two instructions from pte lookup code
parisc: Use zdep for shlw macro on PA1.1 and PA2.0
parisc: Add alternative coding infrastructure
parisc: Include compressed vmlinux file in vmlinuz boot kernel
extract-vmlinux: Check for uncompressed image as fallback
parisc: Fix address in HPMC IVA
parisc: Fix exported address of os_hpmc handler
parisc: Fix map_pages() to not overwrite existing pte entries
parisc: Purge TLB entries after updating page table entry and set page accessed flag in TLB handler
parisc: Release spinlocks using ordered store
parisc: Ratelimit dino stuck interrupt warnings
parisc: dino: Utilize DINO_MASK_IRQ() macro
parisc: Clean up crash header output
parisc: Add SYSTEM_INFO and REGISTER TOC PAT functions
parisc: Remove PTE load and fault check from L2_ptep macro
parisc: Reorder TLB flush timing calculation
...
projects / kernel.git / log