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| author | Pavel Emelyanov <xemul@openvz.org> | 2008-03-24 20:29:52 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-03-25 03:22:19 +0100 |
| commit | a846a1954b6397e844fe1e258af7598897ec6159 (patch) | |
| tree | a90b3a593d528c299fd90e9e84fe17a7cdb23733 /kernel/posix-cpu-timers.c | |
| parent | revert "kswapd should only wait on IO if there is IO" (diff) | |
| download | linux-a846a1954b6397e844fe1e258af7598897ec6159.tar.xz linux-a846a1954b6397e844fe1e258af7598897ec6159.zip | |
bsd_acct: plain current->real_parent access is not always safe
This is minor, but dereferencing even current real_parent is not safe on debug
kernels, since the memory, this points to, can be unmapped - RCU protection is
required.
Besides, the tgid field is deprecated and is to be replaced with task_tgid_xxx
call (the 2nd patch), so RCU will be required anyway.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/posix-cpu-timers.c')
0 files changed, 0 insertions, 0 deletions