Am Sonntag, den 01.06.2008, 13:54 +0200 schrieb Rafael J. Wysocki:
> On Sunday, 1 of June 2008, Alexey Fisher wrote:
> > I get this after suspend on my PC (2.6.26-rc4-00103-g1beee8d). I do not
> > thing there is any reason to bisect it, supend on my PC began to work
> > only with 2.6.26-rc3:
>
> Well, that's interesting.
>
> I have no idea what !@#$%^& happend here ...
>
> > [ 433.110546] BUG: sleeping function called from invalid context at
> > mm/slab.c:3052
> > [ 433.110550] in_atomic():1, irqs_disabled():0
> > [ 433.110554] 5 locks held by pm-suspend/4783:
> > [ 433.110556] #0: (&buffer->mutex){--..}, at: [<c01ac0b0>]
> > sysfs_write_file+0x24/0xe1
> > [ 433.110572] #1: (pm_mutex){--..}, at: [<c0147288>] enter_state
> > +0x15c/0x170
> > [ 433.110579] #2: (cpu_add_remove_lock){--..}, at: [<c0143138>]
> > disable_nonboot_cpus+0x8/0xc0
> > [ 433.110585] #3: (&cpu_hotplug.lock){--..}, at: [<c014308d>]
Seems like it depend on CONFIG_PREEMPT, with CONFIG_PREEMPT_VOLUNTARY
i'll get other Warning:
I try to bisect it now.
[ 0.411583] Kprobe smoke test started
[ 0.412042] ------------[ cut here ]------------
[ 0.412049] WARNING: at kernel/lockdep.c:2658 check_flags
+0x4d/0x12d()
[ 0.412056] Modules linked in:
[ 0.412063] Pid: 1, comm: swapper Not tainted
2.6.26-rc4-testing-00168-gc3b25b3 #39
[ 0.412072] [<c012094a>] warn_on_slowpath+0x41/0x6c
[ 0.412083] [<c013c62e>] ? mark_held_locks+0x4e/0x66
[ 0.412092] [<c0349617>] ? kprobe_exceptions_notify+0x2b3/0x33a
[ 0.412103] [<c013c7bd>] ? trace_hardirqs_on+0xe8/0x124
[ 0.412112] [<c0349638>] ? kprobe_exceptions_notify+0x2d4/0x33a
[ 0.412122] [<c034a0bb>] ? __atomic_notifier_call_chain+0x0/0x5a
[ 0.412132] [<c013a591>] check_flags+0x4d/0x12d
[ 0.412139] [<c013d924>] lock_release+0x46/0x196
[ 0.412147] [<c034a10b>] __atomic_notifier_call_chain+0x50/0x5a
[ 0.412156] [<c034a121>] atomic_notifier_call_chain+0xc/0xe
[ 0.412165] [<c0134af5>] notify_die+0x2d/0x2f
[ 0.412175] [<c0348c04>] do_debug+0x55/0xd7
[ 0.412183] [<c0348657>] debug_stack_correct+0x27/0x2c
[ 0.412191] [<c014a8b2>] ? init_test_probes+0x2c/0x186
[ 0.412200] [<c014a824>] ? kprobe_target+0x1/0x34
[ 0.412209] [<c014a8d6>] ? init_test_probes+0x50/0x186
[ 0.412218] [<c04aa7be>] init_kprobes+0xf2/0xfc
[ 0.412226] [<c0112f4d>] ? kernel_map_pages+0x108/0x11f
[ 0.412236] [<c013c8f5>] ? debug_check_no_locks_freed+0xfc/0x116
[ 0.412245] [<c013c7bd>] ? trace_hardirqs_on+0xe8/0x124
[ 0.412255] [<c013ab16>] ? lockdep_init_map+0x7a/0x361
[ 0.412263] [<c013a0d2>] ? debug_mutex_init+0x24/0x37
[ 0.412272] [<c013305c>] ? __mutex_init+0x38/0x40
[ 0.412281] [<c049d470>] kernel_init+0x127/0x257
[ 0.412289] [<c04aa6cc>] ? init_kprobes+0x0/0xfc
[ 0.412298] [<c013c7bd>] ? trace_hardirqs_on+0xe8/0x124
[ 0.412307] [<c0102cf7>] ? restore_nocheck+0x12/0x15
[ 0.412316] [<c049d349>] ? kernel_init+0x0/0x257
[ 0.412324] [<c049d349>] ? kernel_init+0x0/0x257
[ 0.412333] [<c0103903>] kernel_thread_helper+0x7/0x10
[ 0.412341] =======================
[ 0.412354] ---[ end trace a7919e7f17c0a725 ]---
[ 0.412359] possible reason: unannotated irqs-off.
[ 0.412365] irq event stamp: 372951
[ 0.412369] hardirqs last enabled at (372951): [<c0349617>]
kprobe_exceptions_notify+0x2b3/0x33a
[ 0.412381] hardirqs last disabled at (372950): [<c0348eda>] do_int3
+0x15/0x6c
[ 0.412394] softirqs last enabled at (372924): [<c0124bef>]
__do_softirq+0xe9/0xf1
[ 0.412405] softirqs last disabled at (372917): [<c0124c31>]
do_softirq+0x3a/0x52
[ 0.414705] Kprobe smoke test passed successfully
[ 0.415603] highmem bounce pool size: 64 pages
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