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authorEric W. Biederman <ebiederm@xmission.com>2007-11-28 16:21:26 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-11-29 09:24:52 -0800
commit19fd4bb2a0cfede054e4904e0b167e0ca4f36cc7 (patch)
treee37d0ee2c7ea08f6d8721a4e9e807f85994b608a /drivers
parentc895078355b6b6e05c60aa205892526dd3390f0a (diff)
proc: remove races from proc_id_readdir()
Oleg noticed that the call of task_pid_nr_ns() in proc_pid_readdir is racy with respect to tasks exiting. After a bit of examination it also appears that the call itself is completely unnecessary. So to fix the problem this patch modifies next_tgid() to return both a tgid and the task struct in question. A structure is introduced to return these values because it is slightly cleaner and easier to optimize, and the resulting code is a little shorter. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions