posix-cpu-timers: Fix nanosleep task_struct leak
authorStanislaw Gruszka <sgruszka@redhat.com>
Fri, 15 Feb 2013 10:08:11 +0000 (11:08 +0100)
committerThomas Gleixner <tglx@linutronix.de>
Fri, 15 Feb 2013 10:41:56 +0000 (11:41 +0100)
commite6c42c295e071dd74a66b5a9fcf4f44049888ed8
tree7d417f64b7fa04511b4006eb4907ef41b7e401ed
parent9f4646d28362bc424b8a4c7d09ea1c2f1759371a
posix-cpu-timers: Fix nanosleep task_struct leak

The trinity fuzzer triggered a task_struct reference leak via
clock_nanosleep with CPU_TIMERs. do_cpu_nanosleep() calls
posic_cpu_timer_create(), but misses a corresponding
posix_cpu_timer_del() which leads to the task_struct reference leak.

Reported-and-tested-by: Tommi Rantala <tt.rantala@gmail.com>
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: Dave Jones <davej@redhat.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/20130215100810.GF4392@redhat.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
kernel/posix-cpu-timers.c