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(parent: b625a10) | patch
ptr_ring: fail early if queue occupies more than KMALLOC_MAX_SIZE
authorJason Wang <jasowang@redhat.com>
Fri, 9 Feb 2018 09:45:49 +0000 (17:45 +0800)
committerDavid S. Miller <davem@davemloft.net>
Fri, 9 Feb 2018 19:28:57 +0000 (14:28 -0500)
commitbe64553cec3f338d866975ab9e6b1b42b094c6c3
tree336e9b2806125740656b3fcb6f0dc895ccd69acftree | snapshot
parentb625a1030c3a4cb2e0f8185569ed376ec1d5c20acommit | diff
ptr_ring: fail early if queue occupies more than KMALLOC_MAX_SIZE

To avoid slab to warn about exceeded size, fail early if queue
occupies more than KMALLOC_MAX_SIZE.

Reported-by: syzbot+e4d4f9ddd4295539735d@syzkaller.appspotmail.com
Fixes: 82b55824e3a1c ("ptr_ring: array based FIFO for pointers")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/linux/ptr_ring.h diff | blob | history
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