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Subject2.6.23 regression: do_nanosleep will not return
Date
Hi,

we have a system here were e.g. "sleep 1" will never finish. This is an
issue of 2.6.23, on all older kernel versions it did work fine.

Seems to hang in do_nanosleep()

[ 153.775792] sleep S 0000000000000000 0 5372 5341
[ 153.782385] ffff81007f0a9ea8 0000000000000082 0000000000000000 0000000000008efc
[ 153.790635] ffff81007f0a9e48 ffffffff802447b4 ffff81007f0c3080 0000000300000000
[ 153.798938] ffff81007f0c39c8 ffff81007f0c37c0 000000004001d908 0000000000000000
[ 153.806991] Call Trace:
[ 153.809937] [<ffffffff8048e4cd>] do_nanosleep+0x42/0x75
[ 153.815727] [<0000000000000001>]
[ 153.819383]
[ 153.775792] sleep S 0000000000000000 0 5372 5341


[ 330.669444] SysRq : Show Pending Timers
[ 330.673552] Timer List Version: v0.3
[ 330.677326] HRTIMER_MAX_CLOCK_BASES: 2
[ 330.681282] now at 255011372633 nsecs
[ 330.829981] active timers:
[ 330.832859] #0: <ffff81007f0e3de8>, hrtimer_wakeup, S:01
[ 330.838805] # expires at 260156346358 nsecs [in 5144973725 nsecs]

[ 337.046189] now at 261387685432 nsecs
[ 337.194966] active timers:
[ 337.197834] #0: <ffff81007f0e3de8>, hrtimer_wakeup, S:01
[ 337.203793] # expires at 260156346358 nsecs [in 18446744072478212542 nsecs]
[ 330.669444] SysRq : Show Pending Timers


Any ideas?

Thanks,
Bernd

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