While looking into a wireless kmalloc BUG, I ran into this(below) basically to reproduce I use s2ram two or three times in a row, and then use echo mem > /sys/power/state happens on the second time. Now if I choose to not use s2ram and only echo mem the machine reports nothing on the second try, and just automatically reboots. heres the first catch of this: <1>[ 426.143717] BUG: unable to handle kernel paging request at ffff8800000b8000 <1>[ 426.143722] IP: [<ffffffff8123b098>] vgacon_switch+0x64/0x100 <4>[ 426.143730] PGD 1002063 PUD 1006063 PMD 100067 PTE e7bea200e7bea2 <0>[ 426.143735] Oops: 0002 [#1] SMP DEBUG_PAGEALLOC <0>[ 426.143738] last sysfs file: /sys/devices/platform/applesmc.768/light <4>[ 426.143741] CPU 0 <4>[ 426.143743] Modules linked in: radeon ttm drm_kms_helper drm i2c_algo_bit ipt_LOG iptable_nat nf_nat xt_state nf_conntrack_ftp nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 iptable_filter ip_tables x_tables snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep firewire_ohci ath9k firewire_core snd_pcm ohci1394 i2c_i801 evdev ath sky2 joydev thermal snd_page_alloc ac video battery button raw1394 ieee1394 uhci_hcd ehci_hcd coretemp acpi_cpufreq processor appletouch applesmc <6>[ 426.143775] Pid: 3151, comm: X Not tainted 2.6.32-rc8-00261-g29fa55a #4 MacBookPro2,2 <6>[ 426.143777] RIP: 0010:[<ffffffff8123b098>] [<ffffffff8123b098>] vgacon_switch+0x64/0x100 <6>[ 426.143781] RSP: 0018:ffff88002bf55c98 EFLAGS: 00010202 <6>[ 426.143783] RAX: ffffffff81488919 RBX: ffff880037ced400 RCX: 0000000000000fa0 <6>[ 426.143785] RDX: 0000000000000010 RSI: ffff880022942000 RDI: ffff8800000b8000 <6>[ 426.143787] RBP: ffff88002bf55ca8 R08: 0000000000000019 R09: 0000000000000280 <6>[ 426.143790] R10: ffff8800000b8000 R11: 0000000000000010 R12: 0000000000000000 <6>[ 426.143792] R13: 0000000000000001 R14: ffff880024f53c00 R15: ffff880020ef3000 <6>[ 426.143795] FS: 00007f3f9ae437a0(0000) GS:ffff880003600000(0000) knlGS:0000000000000000 <6>[ 426.143797] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 <6>[ 426.143799] CR2: ffff8800000b8000 CR3: 000000003b788000 CR4: 00000000000006f0 <6>[ 426.143801] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 <6>[ 426.143803] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 <4>[ 426.143806] Process X (pid: 3151, threadinfo ffff88002bf54000, task ffff88002ba76360) <0>[ 426.143808] Stack: <4>[ 426.143809] ffff880024f53c00 ffff880037ced400 ffff88002bf55cd8 ffffffff8129e59b <4>[ 426.143812] <0> ffff880037ced400 0000000000000001 0000000000000001 ffff880024f53c00 <4>[ 426.143815] <0> ffff88002bf55cf8 ffffffff8129ef57 ffff880037ced400 0000000000000006 <0>[ 426.143819] Call Trace: <4>[ 426.143823] [<ffffffff8129e59b>] redraw_screen+0x102/0x1b6 <4>[ 426.143827] [<ffffffff8129ef57>] do_unblank_screen+0xff/0x145 <4>[ 426.143831] [<ffffffff8129632d>] complete_change_console+0x55/0xc8 <4>[ 426.143834] [<ffffffff812976c5>] vt_ioctl+0x12a7/0x1952 <4>[ 426.143838] [<ffffffff811daa1e>] ? avc_has_perm+0x5c/0x6e <4>[ 426.143843] [<ffffffff810bc785>] ? __call_rcu+0x127/0x133 <4>[ 426.143846] [<ffffffff8128e90d>] tty_ioctl+0x7ee/0x856 <4>[ 426.143850] [<ffffffff81097620>] ? trace_hardirqs_off_caller+0x16/0xa9 <4>[ 426.143855] [<ffffffff81128261>] vfs_ioctl+0x22/0x87 <4>[ 426.143858] [<ffffffff811287ca>] do_vfs_ioctl+0x488/0x4ce <4>[ 426.143861] [<ffffffff81128866>] sys_ioctl+0x56/0x79 <4>[ 426.143865] [<ffffffff8102e05b>] system_call_fastpath+0x16/0x1b <0>[ 426.143867] Code: 01 83 3d 2b 5b 0b 01 00 75 72 8b 4f 48 4c 8b 57 18 39 0d e4 6d 4d 00 48 8b 77 40 0f 46 0d d9 6d 4d 00 4c 89 d7 89 c9 41 c1 e1 03 <f3> a4 44 39 0d 8f 5a 0b 01 75 0d 44 0f af c2 44 39 05 86 5a 0b <1>[ 426.143893] RIP [<ffffffff8123b098>] vgacon_switch+0x64/0x100 <4>[ 426.143896] RSP <ffff88002bf55c98> <0>[ 426.143897] CR2: ffff8800000b8000 <4>[ 426.143900] ---[ end trace c919a05e0cc13f51 ]--- Bus reset ! and the second catch of this(seems reproducible from here unlike the wireless bug I'm looking at). /* second go at this i.g. used s2ram 2/3 times then used echo mem > /sys/power/state 2 times */ <1>[ 160.534278] BUG: unable to handle kernel paging request at ffff88000011b068 <1>[ 160.534286] IP: [<ffffffff81048af4>] spurious_fault+0x129/0x1a0 <4>[ 160.534296] PGD 1002063 PUD 1006063 PMD 100067 PTE c7bea600c7bea6 <0>[ 160.534303] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC <0>[ 160.534308] last sysfs file: /sys/devices/platform/applesmc.768/light <4>[ 160.534313] CPU 1 <4>[ 160.534315] Modules linked in: radeon ttm drm_kms_helper drm i2c_algo_bit ipt_LOG iptable_nat nf_nat xt_state nf_conntrack_ftp nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 iptable_filter ip_tables x_tables snd_hda_codec_idt snd_hda_intel firewire_ohci snd_hda_codec firewire_core ath9k video snd_hwdep ohci1394 i2c_i801 battery ac evdev joydev thermal sky2 snd_pcm ath button snd_page_alloc raw1394 ieee1394 uhci_hcd ehci_hcd coretemp acpi_cpufreq processor appletouch applesmc <6>[ 160.534372] Pid: 2786, comm: X Tainted: G M 2.6.32-rc8-00261-g29fa55a #4 MacBookPro2,2 <6>[ 160.534375] RIP: 0010:[<ffffffff81048af4>] [<ffffffff81048af4>] spurious_fault+0x129/0x1a0 <6>[ 160.534381] RSP: 0000:ffff880003803978 EFLAGS: 00013002 <6>[ 160.534384] RAX: ffff880000000000 RBX: ffff88000360df70 RCX: ffffc00000000fff <6>[ 160.534386] RDX: ffff8800010060d8 RSI: 000000000011b068 RDI: 0000000000000000 <6>[ 160.534389] RBP: ffff880003803978 R08: 000000000011b067 R09: 0000000000000001 <6>[ 160.534392] R10: 0000000000000001 R11: ffffffff81063515 R12: ffff8800038039d8 <6>[ 160.534395] R13: 0000000000000000 R14: ffff8800039d8558 R15: ffff88002beca7c0 <6>[ 160.534398] FS: 00007f7bc3eb07a0(0000) GS:ffff880003800000(0000) knlGS:0000000000000000 <6>[ 160.534401] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 <6>[ 160.534404] CR2: ffff88000011b068 CR3: 000000002b87f000 CR4: 00000000000006e0 <6>[ 160.534407] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 <6>[ 160.534410] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 <4>[ 160.534413] Process X (pid: 2786, threadinfo ffff8800247e0000, task ffff88002beca7c0) <0>[ 160.534415] Stack: <4>[ 160.534417] ffff8800038039c8 ffffffff81446420 ffff88002b9bb1e0 ffff88002b9bb180 <4>[ 160.534423] <0> 0000000000000000 0000000000000001 0000000000000000 0000000000000800 <4>[ 160.534429] <0> ffff8800039d8558 0000000000000800 ffff880003803af0 ffffffff814443af <0>[ 160.534436] Call Trace: <0>[ 160.534438] <IRQ> <4>[ 160.534444] [<ffffffff81446420>] do_page_fault+0x81/0x320 <4>[ 160.534448] [<ffffffff814443af>] page_fault+0x1f/0x30 <4>[ 160.534453] [<ffffffff81063515>] ? scheduler_tick+0x41/0x28f <4>[ 160.534459] [<ffffffff810586e1>] ? tg_shares_up+0x167/0x292 <4>[ 160.534463] [<ffffffff81055c38>] ? walk_tg_tree+0x0/0xc6 <4>[ 160.534468] [<ffffffff8108b94b>] ? cpu_clock+0x2d/0x40 <4>[ 160.534473] [<ffffffff8104ea21>] ? tg_nop+0x0/0xd <4>[ 160.534477] [<ffffffff8105857a>] ? tg_shares_up+0x0/0x292 <4>[ 160.534480] [<ffffffff81055cc6>] walk_tg_tree+0x8e/0xc6 <4>[ 160.534484] [<ffffffff81055c38>] ? walk_tg_tree+0x0/0xc6 <4>[ 160.534489] [<ffffffff810976c0>] ? trace_hardirqs_off+0xd/0xf <4>[ 160.534492] [<ffffffff8108b94b>] ? cpu_clock+0x2d/0x40 <4>[ 160.534496] [<ffffffff81058227>] update_shares+0x57/0x5b <4>[ 160.534500] [<ffffffff81058b71>] select_task_rq_fair+0x2de/0x995 <4>[ 160.534504] [<ffffffff81058933>] ? select_task_rq_fair+0xa0/0x995 <4>[ 160.534508] [<ffffffff81056fe9>] ? task_rq_lock+0x43/0x75 <4>[ 160.534512] [<ffffffff81056fe9>] ? task_rq_lock+0x43/0x75 <4>[ 160.534516] [<ffffffff81062177>] try_to_wake_up+0xd1/0x2e1 <4>[ 160.534520] [<ffffffff81056ece>] ? __wake_up+0x22/0x4d <4>[ 160.534524] [<ffffffff81062399>] default_wake_function+0x12/0x14 <4>[ 160.534529] [<ffffffff810868d2>] autoremove_wake_function+0x16/0x39 <4>[ 160.534533] [<ffffffff8104f454>] __wake_up_common+0x4e/0x84 <4>[ 160.534537] [<ffffffff81056ece>] ? __wake_up+0x22/0x4d <4>[ 160.534541] [<ffffffff81056ee5>] __wake_up+0x39/0x4d <4>[ 160.534545] [<ffffffff81081eaf>] insert_work+0x98/0xa5 <4>[ 160.534549] [<ffffffff810824f6>] ? __queue_work+0x1c/0x41 <4>[ 160.534553] [<ffffffff81082509>] __queue_work+0x2f/0x41 <4>[ 160.534557] [<ffffffff8108255a>] delayed_work_timer_fn+0x3f/0x41 <4>[ 160.534562] [<ffffffff81075fe5>] run_timer_softirq+0x25c/0x320 <4>[ 160.534566] [<ffffffff81075f4d>] ? run_timer_softirq+0x1c4/0x320 <4>[ 160.534571] [<ffffffff8108945c>] ? __run_hrtimer+0x100/0x12f <4>[ 160.534575] [<ffffffff8108251b>] ? delayed_work_timer_fn+0x0/0x41 <4>[ 160.534580] [<ffffffff8106e0df>] __do_softirq+0xf2/0x1c3 <4>[ 160.534586] [<ffffffff8102f21c>] call_softirq+0x1c/0x3e <4>[ 160.534590] [<ffffffff81030911>] do_softirq+0x3d/0x88 <4>[ 160.534594] [<ffffffff8106dc4e>] irq_exit+0x4a/0x8c <4>[ 160.534598] [<ffffffff81448402>] smp_apic_timer_interrupt+0x8e/0x9c <4>[ 160.534602] [<ffffffff8102ebf3>] apic_timer_interrupt+0x13/0x20 <0>[ 160.534605] <EOI> <0>[ 160.534607] Code: ff ff 48 23 02 48 f7 d0 48 c1 e8 3f e9 88 00 00 00 4c 21 c1 48 c1 ee 09 81 e6 f8 0f 00 00 48 01 ce 48 b9 ff 0f 00 00 00 c0 ff ff <48> 23 0c 06 48 89 c8 f7 c1 01 01 00 00 74 56 48 89 fe 83 e6 02 <1>[ 160.534663] RIP [<ffffffff81048af4>] spurious_fault+0x129/0x1a0 <4>[ 160.534668] RSP <ffff880003803978> <0>[ 160.534670] CR2: ffff88000011b068 <4>[ 160.534674] ---[ end trace 0be4c179ab42ceb7 ]--- <0>[ 160.534677] Kernel panic - not syncing: Fatal exception in interrupt <4>[ 160.534680] Pid: 2786, comm: X Tainted: G M D 2.6.32-rc8-00261-g29fa55a #4 <4>[ 160.534682] Call Trace: <4>[ 160.534684] <IRQ> [<ffffffff814406d6>] panic+0x7a/0x12b <4>[ 160.534691] [<ffffffff81443a05>] ? _spin_unlock_irqrestore+0x38/0x46 <4>[ 160.534695] [<ffffffff81444fe2>] oops_end+0x86/0x93 <4>[ 160.534699] [<ffffffff810491c3>] no_context+0x1f3/0x202 <4>[ 160.534703] [<ffffffff81049357>] __bad_area_nosemaphore+0x185/0x1a8 <4>[ 160.534707] [<ffffffff81444593>] ? error_sti+0x5/0x6 <4>[ 160.534712] [<ffffffff8104938d>] bad_area_nosemaphore+0x13/0x15 <4>[ 160.534716] [<ffffffff8144654f>] do_page_fault+0x1b0/0x320 <4>[ 160.534720] [<ffffffff814443af>] page_fault+0x1f/0x30 <4>[ 160.534723] [<ffffffff81063515>] ? scheduler_tick+0x41/0x28f <4>[ 160.534727] [<ffffffff81048af4>] ? spurious_fault+0x129/0x1a0 <4>[ 160.534731] [<ffffffff81446420>] do_page_fault+0x81/0x320 <4>[ 160.534735] [<ffffffff814443af>] page_fault+0x1f/0x30 <4>[ 160.534739] [<ffffffff81063515>] ? scheduler_tick+0x41/0x28f <4>[ 160.534743] [<ffffffff810586e1>] ? tg_shares_up+0x167/0x292 <4>[ 160.534747] [<ffffffff81055c38>] ? walk_tg_tree+0x0/0xc6 <4>[ 160.534751] [<ffffffff8108b94b>] ? cpu_clock+0x2d/0x40 <4>[ 160.534754] [<ffffffff8104ea21>] ? tg_nop+0x0/0xd <4>[ 160.534758] [<ffffffff8105857a>] ? tg_shares_up+0x0/0x292 <4>[ 160.534762] [<ffffffff81055cc6>] walk_tg_tree+0x8e/0xc6 <4>[ 160.534765] [<ffffffff81055c38>] ? walk_tg_tree+0x0/0xc6 <4>[ 160.534769] [<ffffffff810976c0>] ? trace_hardirqs_off+0xd/0xf <4>[ 160.534773] [<ffffffff8108b94b>] ? cpu_clock+0x2d/0x40 <4>[ 160.534777] [<ffffffff81058227>] update_shares+0x57/0x5b <4>[ 160.534781] [<ffffffff81058b71>] select_task_rq_fair+0x2de/0x995 <4>[ 160.534785] [<ffffffff81058933>] ? select_task_rq_fair+0xa0/0x995 <4>[ 160.534789] [<ffffffff81056fe9>] ? task_rq_lock+0x43/0x75 <4>[ 160.534793] [<ffffffff81056fe9>] ? task_rq_lock+0x43/0x75 <4>[ 160.534797] [<ffffffff81062177>] try_to_wake_up+0xd1/0x2e1 <4>[ 160.534800] [<ffffffff81056ece>] ? __wake_up+0x22/0x4d <4>[ 160.534804] [<ffffffff81062399>] default_wake_function+0x12/0x14 <4>[ 160.534808] [<ffffffff810868d2>] autoremove_wake_function+0x16/0x39 <4>[ 160.534812] [<ffffffff8104f454>] __wake_up_common+0x4e/0x84 <4>[ 160.534816] [<ffffffff81056ece>] ? __wake_up+0x22/0x4d <4>[ 160.534820] [<ffffffff81056ee5>] __wake_up+0x39/0x4d <4>[ 160.534824] [<ffffffff81081eaf>] insert_work+0x98/0xa5 <4>[ 160.534827] [<ffffffff810824f6>] ? __queue_work+0x1c/0x41 <4>[ 160.534831] [<ffffffff81082509>] __queue_work+0x2f/0x41 <4>[ 160.534835] [<ffffffff8108255a>] delayed_work_timer_fn+0x3f/0x41 <4>[ 160.534839] [<ffffffff81075fe5>] run_timer_softirq+0x25c/0x320 <4>[ 160.534843] [<ffffffff81075f4d>] ? run_timer_softirq+0x1c4/0x320 <4>[ 160.534847] [<ffffffff8108945c>] ? __run_hrtimer+0x100/0x12f <4>[ 160.534851] [<ffffffff8108251b>] ? delayed_work_timer_fn+0x0/0x41 <4>[ 160.534856] [<ffffffff8106e0df>] __do_softirq+0xf2/0x1c3 <4>[ 160.534860] [<ffffffff8102f21c>] call_softirq+0x1c/0x3e <4>[ 160.534864] [<ffffffff81030911>] do_softirq+0x3d/0x88 <4>[ 160.534868] [<ffffffff8106dc4e>] irq_exit+0x4a/0x8c <4>[ 160.534872] [<ffffffff81448402>] smp_apic_timer_interrupt+0x8e/0x9c <4>[ 160.534876] [<ffffffff8102ebf3>] apic_timer_interrupt+0x13/0x20 If I use s2ram I can suspend numerous times without an issue. (the message was retrieved using firescope) -- Justin P. Mattock _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
