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| author | Thomas Gleixner <tglx@linutronix.de> | 2009-12-10 00:53:17 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2009-12-10 23:04:11 +0100 |
| commit | 14d8c9f3c09e7fd7b9af80904289fe204f5b93c6 (patch) | |
| tree | 1c373436517c5853aab0e99cce83364a21134d0e /kernel/perf_event.c | |
| parent | ea5b41f9d595be354f7a50e56b28c2d72e6e88a5 (diff) | |
| download | linux-14d8c9f3c09e7fd7b9af80904289fe204f5b93c6.tar.gz linux-14d8c9f3c09e7fd7b9af80904289fe204f5b93c6.tar.bz2 linux-14d8c9f3c09e7fd7b9af80904289fe204f5b93c6.zip | |
signal: Fix racy access to __task_cred in kill_pid_info_as_uid()
kill_pid_info_as_uid() accesses __task_cred() without being in a RCU
read side critical section. tasklist_lock is not protecting that when
CONFIG_TREE_PREEMPT_RCU=y.
Convert the whole tasklist_lock section to rcu and use
lock_task_sighand to prevent the exit race.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
LKML-Reference: <20091210004703.232302055@linutronix.de>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Diffstat (limited to 'kernel/perf_event.c')
0 files changed, 0 insertions, 0 deletions