]> git.baikalelectronics.ru Git - kernel.git/commit
projects / kernel.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 50ca2bd) | patch
xsk: avoid store-tearing when assigning umem
authorBjörn Töpel <bjorn.topel@intel.com>
Wed, 4 Sep 2019 11:49:11 +0000 (13:49 +0200)
committerDaniel Borkmann <daniel@iogearbox.net>
Thu, 5 Sep 2019 12:11:52 +0000 (14:11 +0200)
commit85c3d38b8f814dbed43092cc902528d505b24b50
tree31b08153807248a101bd3d1c5018c3d9b5fd45abtree | snapshot
parent50ca2bd5ce7678135bc41959c1de2291f5f9f707commit | diff
xsk: avoid store-tearing when assigning umem

The umem member of struct xdp_sock is read outside of the control
mutex, in the mmap implementation, and needs a WRITE_ONCE to avoid
potential store-tearing.

Acked-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Fixes: 34666db2a3bd ("xsk: add umem fill queue support and mmap")
Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
net/xdp/xsk.c diff | blob | history
Linux Kernel Source Tree.