| commit | 92896bd9fd75b1c993b92874d339a8088bb75560 | |
| author | Linus Torvalds <torvalds@linux-foundation.org> | |
| Mon, 24 Mar 2008 18:07:15 +0000 (24 11:07 -0700) | ||
| committer | Linus Torvalds <torvalds@linux-foundation.org> | |
| Mon, 24 Mar 2008 18:07:15 +0000 (24 11:07 -0700) | ||
| tree | 2bd8bc5a8c8ee10a4b1fd62804281d2b486067f0 | treesnapshot (tar.gz zip) |
| parent | d2532dd20a126020de407c1c2476a75b53fce7ac | commitdiff |
Don't 'printk()' while holding xtime lock for writing
The printk() can deadlock because it can wake up klogd(), and
task enqueueing will try to read the time in order to set a hrtimer.
Reported-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Debugged-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The printk() can deadlock because it can wake up klogd(), and
task enqueueing will try to read the time in order to set a hrtimer.
Reported-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Debugged-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| kernel/time/timekeeping.c | diffblobblamehistory |