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authorIlija Hadzic <ihadzic@research.bell-labs.com>2013-11-12 15:11:45 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-13 12:09:36 +0900
commit66da0e1f9034140ae2f571ef96e254a25083906c (patch)
tree46becb19a1991f0ed0ec2fb4d42ba69aebe79ac8 /ipc/msgutil.c
parent1bf49dd4be0b000030c6f04c4a16a17d9affdbd3 (diff)
download96b-common-66da0e1f9034140ae2f571ef96e254a25083906c.tar.gz
devpts: plug the memory leak in kill_sb
When devpts is unmounted, there may be a no-longer-used IDR tree hanging off the superblock we are about to kill. This needs to be cleaned up before destroying the SB. The leak is usually not a big deal because unmounting devpts is typically done when shutting down the whole machine. However, shutting down an LXC container instead of a physical machine exposes the problem (the garbage is detectable with kmemleak). Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com> Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc/msgutil.c')
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