From: Al Viro <viro@zeniv.linux.org.uk>
Date: Wed, 26 May 2010 21:40:29 +0000 (-0400)
Subject: Fix racy use of anon_inode_getfd() in perf_event.c
X-Git-Tag: firefly_0821_release~9833^2~1641^2~13
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ea635c64e007061f6468ece5cc9cc62d41d4ecf2;hp=ea635c64e007061f6468ece5cc9cc62d41d4ecf2;p=firefly-linux-kernel-4.4.55.git

Fix racy use of anon_inode_getfd() in perf_event.c

once anon_inode_getfd() is called, you can't expect *anything* about
struct file that descriptor points to - another thread might be doing
whatever it likes with descriptor table at that point.

Cc: stable <stable@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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