Hello, (cc'ing Jeff, linux-ide and copying the whole message) So, the problem seems to be inside pata_acpi driver. It's calling pacpi_set_piomode() from qc_issue path while holding the queue lock. pacpi_set_piomode() calls into acpi which may sleep. It gets blocked on a semaphore and triggers the bug. Maybe some changes between 3.8.6 and 3.8.8 made it more likely to trigger but fundamentally it's a bug in the pata_acpi driver. It can't directly call into acpi while holding queue lock. Thanks. On Thu, Apr 18, 2013 at 03:55:54PM +0930, Rusty Russell wrote: > Tejun, you touched it last? > > Cheers, > Rusty. > > bugzilla-daemon@xxxxxxxxxxxxxxxxxxx writes: > > https://bugzilla.kernel.org/show_bug.cgi?id=56781 > > > > Summary: BUG: scheduling while atomic: modprobe/256/0x00000100 > > Product: Other > > Version: 2.5 > > Kernel Version: 3.8.6, 3.8.7, 3.8.8 > > Platform: All > > OS/Version: Linux > > Tree: Mainline > > Status: NEW > > Severity: high > > Priority: P1 > > Component: Modules > > AssignedTo: other_modules@xxxxxxxxxxxxxxxxxxxx > > ReportedBy: kenzopl@xxxxx > > CC: airlied@xxxxxxxx > > Regression: No > > > > > > Created an attachment (id=99151) > > --> (https://bugzilla.kernel.org/attachment.cgi?id=99151) > > kern.log > > > > Please be gently as this is my first bug report here. > > > > This issue is repeating since kernel version 3.8.6 up to 3.8.8 (current stable) > > and since I haven't found any solution I decided to post it here because it > > became really annoying. It maybe related to my Radeon card or my DVB USB > > adapter. It happens randomly while booting (kernel panic), sometimes I need to > > reboot my system for several times until it boots up properly, unfortunatelly I > > do not have any other log files, only pictures taken by camera. Please let me > > know if you need more information. > > > > > > kernel: [ 4.633786] BUG: scheduling while atomic: modprobe/256/0x00000100 > > kernel: [ 4.633852] Modules linked in: wmi(+) ttm drm_kms_helper drm > > forcedeth(+) i2c_algo_bit > > kernel: [ 4.633861] Pid: 256, comm: modprobe Not tainted 3.8.6 #1 > > kernel: [ 4.633863] Call Trace: > > kernel: [ 4.633865] <IRQ> [<ffffffff81752bc9>] __schedule_bug+0x4d/0x59 > > kernel: [ 4.633881] [<ffffffff8175e0f6>] __schedule+0x726/0x7b0 > > kernel: [ 4.633884] [<ffffffff8175e4c9>] schedule+0x29/0x70 > > kernel: [ 4.633886] [<ffffffff8175c96c>] schedule_timeout+0x1fc/0x2c0 > > kernel: [ 4.633892] [<ffffffff8108d6f5>] ? check_preempt_curr+0x85/0xa0 > > kernel: [ 4.633894] [<ffffffff8108d73c>] ? ttwu_do_wakeup+0x2c/0xf0 > > kernel: [ 4.633897] [<ffffffff8175d75b>] __down_common+0xa0/0xf7 > > kernel: [ 4.633899] [<ffffffff8175d7c8>] __down_timeout+0x16/0x18 > > kernel: [ 4.633904] [<ffffffff810844fe>] down_timeout+0x5e/0x70 > > kernel: [ 4.633908] [<ffffffff813d2181>] acpi_os_wait_semaphore+0x49/0x5f > > kernel: [ 4.633913] [<ffffffff813f880e>] acpi_ut_acquire_mutex+0x51/0x93 > > kernel: [ 4.633917] [<ffffffff813eae40>] > > acpi_ex_enter_interpreter+0x10/0x30 > > kernel: [ 4.633922] [<ffffffff813f0037>] acpi_evaluate_object+0x1f5/0x233 > > kernel: [ 4.633927] [<ffffffff814dd157>] ata_acpi_stm+0x97/0xe0 > > kernel: [ 4.633930] [<ffffffff814e07b1>] pacpi_set_piomode+0x51/0x70 > > kernel: [ 4.633932] [<ffffffff814e0816>] pacpi_qc_issue+0x46/0x80 > > kernel: [ 4.633936] [<ffffffff814c73b3>] ata_qc_issue+0x173/0x380 > > kernel: [ 4.633940] [<ffffffff814cd470>] ? > > ata_scsi_set_sense.constprop.24+0x30/0x30 > > kernel: [ 4.633942] [<ffffffff814cc097>] ata_scsi_translate+0xa7/0x180 > > kernel: [ 4.633945] [<ffffffff814d0259>] ata_scsi_queuecmd+0xa9/0x2b0 > > kernel: [ 4.633949] [<ffffffff814a342e>] scsi_dispatch_cmd+0xde/0x2c0 > > kernel: [ 4.633953] [<ffffffff814aae70>] scsi_request_fn+0x350/0x560 > > kernel: [ 4.633956] [<ffffffff81768b1d>] ? > > call_function_single_interrupt+0x6d/0x80 > > kernel: [ 4.633960] [<ffffffff8133e1c7>] __blk_run_queue+0x37/0x50 > > kernel: [ 4.633963] [<ffffffff814a9ef9>] scsi_run_queue+0x179/0x2b0 > > kernel: [ 4.633966] [<ffffffff81464ce7>] ? put_device+0x17/0x20 > > kernel: [ 4.633969] [<ffffffff814ab462>] scsi_next_command+0x42/0x60 > > kernel: [ 4.633971] [<ffffffff814ab6ce>] scsi_io_completion+0x1ee/0x6c0 > > kernel: [ 4.633974] [<ffffffff814a166d>] scsi_finish_command+0xbd/0x120 > > kernel: [ 4.633977] [<ffffffff814ab3ee>] scsi_softirq_done+0x13e/0x150 > > kernel: [ 4.633981] [<ffffffff81344ce3>] blk_done_softirq+0x83/0xa0 > > kernel: [ 4.633984] [<ffffffff81061aef>] __do_softirq+0xcf/0x210 > > kernel: [ 4.633989] [<ffffffff8103b948>] ? ack_apic_level+0x78/0x130 > > kernel: [ 4.633991] [<ffffffff8176905c>] call_softirq+0x1c/0x30 > > kernel: [ 4.633996] [<ffffffff810161b5>] do_softirq+0x75/0xb0 > > kernel: [ 4.633999] [<ffffffff81061da5>] irq_exit+0xa5/0xb0 > > kernel: [ 4.634002] [<ffffffff817698f3>] do_IRQ+0x63/0xe0 > > kernel: [ 4.634005] [<ffffffff8175f9ad>] common_interrupt+0x6d/0x6d > > kernel: [ 4.634006] <EOI> [<ffffffff817633f4>] ? > > __do_page_fault+0x264/0x4e0 > > kernel: [ 4.634011] [<ffffffff817633ec>] ? __do_page_fault+0x25c/0x4e0 > > kernel: [ 4.634014] [<ffffffff81086bda>] ? lg_local_unlock+0x1a/0x20 > > kernel: [ 4.634019] [<ffffffff811ab116>] ? mntput+0x26/0x40 > > kernel: [ 4.634023] [<ffffffff8118d9fe>] ? __fput+0x16e/0x240 > > kernel: [ 4.634026] [<ffffffff8118dade>] ? ____fput+0xe/0x10 > > kernel: [ 4.634031] [<ffffffff8107af71>] ? task_work_run+0xc1/0xe0 > > kernel: [ 4.634034] [<ffffffff8176367e>] do_page_fault+0xe/0x10 > > kernel: [ 4.634037] [<ffffffff8175fc98>] page_fault+0x28/0x30 > > kernel: [ 4.640098] BUG: scheduling while atomic: modprobe/256/0x00000100 > > kernel: [ 4.640167] Modules linked in: wmi(+) ttm drm_kms_helper drm > > forcedeth(+) i2c_algo_bit > > kernel: [ 4.640179] Pid: 256, comm: modprobe Tainted: G W 3.8.6 #1 > > kernel: [ 4.640181] Call Trace: > > kernel: [ 4.640183] <IRQ> [<ffffffff81752bc9>] __schedule_bug+0x4d/0x59 > > kernel: [ 4.640201] [<ffffffff8175e0f6>] __schedule+0x726/0x7b0 > > kernel: [ 4.640204] [<ffffffff8175e4c9>] schedule+0x29/0x70 > > kernel: [ 4.640206] [<ffffffff8175c96c>] schedule_timeout+0x1fc/0x2c0 > > kernel: [ 4.640212] [<ffffffff813ef0ee>] ? > > acpi_ns_search_one_scope+0x22/0x45 > > kernel: [ 4.640215] [<ffffffff813ef19c>] ? > > acpi_ns_search_and_enter+0x8b/0x147 > > kernel: [ 4.640217] [<ffffffff8175d75b>] __down_common+0xa0/0xf7 > > kernel: [ 4.640220] [<ffffffff8175d7c8>] __down_timeout+0x16/0x18 > > kernel: [ 4.640225] [<ffffffff810844fe>] down_timeout+0x5e/0x70 > > kernel: [ 4.640229] [<ffffffff813d2181>] acpi_os_wait_semaphore+0x49/0x5f > > kernel: [ 4.640233] [<ffffffff813f880e>] acpi_ut_acquire_mutex+0x51/0x93 > > kernel: [ 4.640236] [<ffffffff813eae40>] > > acpi_ex_enter_interpreter+0x10/0x30 > > kernel: [ 4.640239] [<ffffffff813ed28d>] acpi_ns_evaluate+0x13d/0x1ad > > kernel: [ 4.640242] [<ffffffff813eff69>] acpi_evaluate_object+0x127/0x233 > > kernel: [ 4.640245] [<ffffffff813d4d69>] ? acpi_get_child+0x4f/0x4f > > kernel: [ 4.640248] [<ffffffff813d25aa>] acpi_evaluate_integer+0x34/0x53 > > kernel: [ 4.640250] [<ffffffff813d4d96>] do_acpi_find_child+0x2d/0x52 > > kernel: [ 4.640253] [<ffffffff813ef970>] acpi_ns_walk_namespace+0xd5/0x179 > > kernel: [ 4.640256] [<ffffffff813d4d69>] ? acpi_get_child+0x4f/0x4f > > kernel: [ 4.640258] [<ffffffff813efe0f>] acpi_walk_namespace+0x98/0xcb > > kernel: [ 4.640261] [<ffffffff813d4d5f>] acpi_get_child+0x45/0x4f > > kernel: [ 4.640266] [<ffffffff814dceeb>] ata_ap_acpi_handle+0x2b/0x30 > > kernel: [ 4.640268] [<ffffffff814dd1cb>] ata_acpi_gtm+0x2b/0x100 > > kernel: [ 4.640271] [<ffffffff814e07bc>] pacpi_set_piomode+0x5c/0x70 > > kernel: [ 4.640274] [<ffffffff814e0816>] pacpi_qc_issue+0x46/0x80 > > kernel: [ 4.640278] [<ffffffff814c73b3>] ata_qc_issue+0x173/0x380 > > kernel: [ 4.640282] [<ffffffff814cd470>] ? > > ata_scsi_set_sense.constprop.24+0x30/0x30 > > kernel: [ 4.640285] [<ffffffff814cc097>] ata_scsi_translate+0xa7/0x180 > > kernel: [ 4.640287] [<ffffffff814d0259>] ata_scsi_queuecmd+0xa9/0x2b0 > > kernel: [ 4.640291] [<ffffffff814a342e>] scsi_dispatch_cmd+0xde/0x2c0 > > kernel: [ 4.640294] [<ffffffff814aae70>] scsi_request_fn+0x350/0x560 > > kernel: [ 4.640298] [<ffffffff81768b1d>] ? > > call_function_single_interrupt+0x6d/0x80 > > kernel: [ 4.640302] [<ffffffff8133e1c7>] __blk_run_queue+0x37/0x50 > > kernel: [ 4.640304] [<ffffffff814a9ef9>] scsi_run_queue+0x179/0x2b0 > > kernel: [ 4.640310] [<ffffffff81464ce7>] ? put_device+0x17/0x20 > > kernel: [ 4.640314] [<ffffffff814ab462>] scsi_next_command+0x42/0x60 > > kernel: [ 4.640316] [<ffffffff814ab6ce>] scsi_io_completion+0x1ee/0x6c0 > > kernel: [ 4.640319] [<ffffffff814a166d>] scsi_finish_command+0xbd/0x120 > > kernel: [ 4.640322] [<ffffffff814ab3ee>] scsi_softirq_done+0x13e/0x150 > > kernel: [ 4.640328] [<ffffffff81344ce3>] blk_done_softirq+0x83/0xa0 > > kernel: [ 4.640333] [<ffffffff81061aef>] __do_softirq+0xcf/0x210 > > kernel: [ 4.640338] [<ffffffff8103b948>] ? ack_apic_level+0x78/0x130 > > kernel: [ 4.640340] [<ffffffff8176905c>] call_softirq+0x1c/0x30 > > kernel: [ 4.640349] [<ffffffff810161b5>] do_softirq+0x75/0xb0 > > kernel: [ 4.640352] [<ffffffff81061da5>] irq_exit+0xa5/0xb0 > > kernel: [ 4.640355] [<ffffffff817698f3>] do_IRQ+0x63/0xe0 > > kernel: [ 4.640358] [<ffffffff8175f9ad>] common_interrupt+0x6d/0x6d > > kernel: [ 4.640360] <EOI> [<ffffffff817633f4>] ? > > __do_page_fault+0x264/0x4e0 > > kernel: [ 4.640366] [<ffffffff817633ec>] ? __do_page_fault+0x25c/0x4e0 > > kernel: [ 4.640369] [<ffffffff81086bda>] ? lg_local_unlock+0x1a/0x20 > > kernel: [ 4.640374] [<ffffffff811ab116>] ? mntput+0x26/0x40 > > kernel: [ 4.640378] [<ffffffff8118d9fe>] ? __fput+0x16e/0x240 > > kernel: [ 4.640381] [<ffffffff8118dade>] ? ____fput+0xe/0x10 > > kernel: [ 4.640385] [<ffffffff8107af71>] ? task_work_run+0xc1/0xe0 > > kernel: [ 4.640388] [<ffffffff8176367e>] do_page_fault+0xe/0x10 > > kernel: [ 4.640390] [<ffffffff8175fc98>] page_fault+0x28/0x30 > > > > -- > > Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email > > ------- You are receiving this mail because: ------- > > You are watching the assignee of the bug. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
