]> git.baikalelectronics.ru Git - kernel.git/commit
projects / kernel.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 22b5fb2) | patch
net: fix a race in dst_release()
authorEric Dumazet <edumazet@google.com>
Tue, 10 Nov 2015 01:51:23 +0000 (17:51 -0800)
committerDavid S. Miller <davem@davemloft.net>
Tue, 10 Nov 2015 02:55:48 +0000 (21:55 -0500)
commite075659c800031dfb554b640450c9df7722c435c
tree32b81467f642ab7a2b6d0b20b2a935eb85bae712tree | snapshot
parent22b5fb2977d8c1440c1743a94f6f479bc8742c6dcommit | diff
net: fix a race in dst_release()

Only cpu seeing dst refcount going to 0 can safely
dereference dst->flags.

Otherwise an other cpu might already have freed the dst.

Fixes: 63b489d4c4a4 ("net: avoid RCU for NOCACHE dst")
Reported-by: Greg Thelen <gthelen@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/core/dst.c diff | blob | history
Linux Kernel Source Tree.