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| author | Peter Zijlstra | 2015-06-11 14:46:48 +0200 |
|---|---|---|
| committer | Thomas Gleixner | 2015-06-19 00:09:56 +0200 |
| commit | 887d9dc989eb0154492e41e7c07492edbb088ba1 (patch) | |
| tree | 53f3c08252d60c9ceb32fa488c1e0ab77a95b9ef /kernel/time/timer.c | |
| parent | seqcount: Introduce raw_write_seqcount_barrier() (diff) | |
| download | kernel-qcow2-linux-887d9dc989eb0154492e41e7c07492edbb088ba1.tar.gz kernel-qcow2-linux-887d9dc989eb0154492e41e7c07492edbb088ba1.tar.xz kernel-qcow2-linux-887d9dc989eb0154492e41e7c07492edbb088ba1.zip | |
hrtimer: Allow hrtimer::function() to free the timer
Currently an hrtimer callback function cannot free its own timer
because __run_hrtimer() still needs to clear HRTIMER_STATE_CALLBACK
after it. Freeing the timer would result in a clear use-after-free.
Solve this by using a scheme similar to regular timers; track the
current running timer in hrtimer_clock_base::running.
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: ktkhai@parallels.com
Cc: rostedt@goodmis.org
Cc: juri.lelli@gmail.com
Cc: pang.xunlei@linaro.org
Cc: wanpeng.li@linux.intel.com
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: umgwanakikbuti@gmail.com
Link: http://lkml.kernel.org/r/20150611124743.471563047@infradead.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/time/timer.c')
0 files changed, 0 insertions, 0 deletions