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Date: Sat, 8 Dec 2012 20:35:24 +0000 From: Mel Gorman <mgorman@...e.de> To: Tejun Heo <tj@...nel.org> Cc: Linus Torvalds <torvalds@...ux-foundation.org>, Neela Syam Kolli <megaraidlinux@....com>, "James E.J. Bottomley" <JBottomley@...allels.com>, linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org Subject: 3.7-rc8 boot failure due to recent workqueue-related patch Commit 8852aac2 (workqueue: mod_delayed_work_on() shouldn't queue timer on 0 delay) is causing the following boot failure for me. Found by bisection but no further analysis unfortunately until I get back home properly. I've added the relevant maintainers for megasas and SCSI in case it's somehow specific to that driver. [ 10.959999] ------------[ cut here ]------------ [ 10.964751] WARNING: at kernel/workqueue.c:1363 __queue_delayed_work+0x170/0x180() [ 10.972496] Hardware name: PowerEdge R810 [ 10.976618] Modules linked in: i7core_edac(+) pcspkr joydev ses(+) enclosure lpc_ich(+) ata_piix(+) mfd_core edac_core sg serio_raw dcdbas wmi gf128mul acpi_power_meter button microcode autofs4 processor thermal_sys scsi_dh_rdac scsi_dh_hp_sw scsi_dh_alua scsi_dh_emc scsi_dh ata_generic megaraid_sas pata_atiixp [ 11.006274] Pid: 0, comm: swapper/4 Not tainted 3.7.0-rc8-numacore-20121207 #1 [ 11.013671] Call Trace: [ 11.016236] <IRQ> [<ffffffff8104752f>] warn_slowpath_common+0x7f/0xc0 [ 11.023102] [<ffffffff8104758a>] warn_slowpath_null+0x1a/0x20 [ 11.029053] [<ffffffff81066430>] __queue_delayed_work+0x170/0x180 [ 11.035357] [<ffffffff8108aee6>] ? trigger_load_balance+0x1b6/0x260 [ 11.037184] ata_piix 0000:00:1f.2: setting latency timer to 64 [ 11.037814] scsi1 : ata_piix [ 11.038015] scsi2 : ata_piix [ 11.038106] ata1: SATA max UDMA/133 cmd 0xece8 ctl 0xecf8 bmdma 0xecc0 irq 23 [ 11.038112] ata2: SATA max UDMA/133 cmd 0xecf0 ctl 0xecfc bmdma 0xecc8 irq 23 [ 11.068248] [<ffffffff8106652d>] queue_delayed_work_on+0x4d/0x60 [ 11.074459] [<ffffffff8106657c>] queue_delayed_work+0x1c/0x20 [ 11.080409] [<ffffffff8106659b>] schedule_delayed_work+0x1b/0x20 [ 11.086630] [<ffffffffa000cb3e>] megasas_complete_cmd+0x54e/0x6f0 [megaraid_sas] [ 11.094292] [<ffffffff8106f419>] ? enqueue_hrtimer+0x29/0xc0 [ 11.100195] [<ffffffffa000cd6f>] megasas_complete_cmd_dpc+0x8f/0xf0 [megaraid_sas] [ 11.108063] [<ffffffff8105027a>] tasklet_action+0x6a/0xe0 [ 11.113667] [<ffffffff8104fd80>] __do_softirq+0xd0/0x260 [ 11.119188] [<ffffffff8159da5c>] call_softirq+0x1c/0x30 [ 11.124626] [<ffffffff81004715>] do_softirq+0x75/0xb0 [ 11.129882] [<ffffffff81050095>] irq_exit+0xb5/0xc0 [ 11.134968] [<ffffffff8159e153>] do_IRQ+0x63/0xe0 [ 11.139880] [<ffffffff8159522d>] common_interrupt+0x6d/0x6d [ 11.145653] <EOI> [<ffffffff8133017d>] ? intel_idle+0xed/0x150 [ 11.151922] [<ffffffff8133015e>] ? intel_idle+0xce/0x150 [ 11.157442] [<ffffffff8145e389>] cpuidle_enter+0x19/0x20 [ 11.163017] [<ffffffff8145ea57>] cpuidle_idle_call+0xa7/0x340 [ 11.168972] [<ffffffff8100bf0a>] cpu_idle+0x7a/0xf0 [ 11.174060] [<ffffffff81581995>] start_secondary+0x209/0x20b [ 11.179945] ---[ end trace 61c662a962be9ab7 ]--- [ 11.184683] ------------[ cut here ]------------ [ 11.189412] kernel BUG at kernel/workqueue.c:1364! [ 11.194316] invalid opcode: 0000 [#1] PREEMPT SMP [ 11.199400] Modules linked in: i7core_edac pcspkr joydev ses(+) enclosure lpc_ich ata_piix mfd_core edac_core sg serio_raw dcdbas wmi gf128mul acpi_power_meter button microcode autofs4 processor thermal_sys scsi_dh_rdac scsi_dh_hp_sw scsi_dh_alua scsi_dh_emc scsi_dh ata_generic megaraid_sas pata_atiixp [ 11.228314] CPU 4 [ 11.230206] Pid: 0, comm: swapper/4 Tainted: G W 3.7.0-rc8-numacore-20121207 #1 Dell Inc. PowerEdge R810/0TT6JF [ 11.241923] RIP: 0010:[<ffffffff810663f5>] [<ffffffff810663f5>] __queue_delayed_work+0x135/0x180 [ 11.251035] RSP: 0018:ffff88047f843db0 EFLAGS: 00010086 [ 11.256463] RAX: 0000000000000000 RBX: ffff88046d0bc9c0 RCX: 0000000000000ead [ 11.263740] RDX: 0000000000002365 RSI: 0000000000000046 RDI: 0000000000000009 [ 11.270987] RBP: ffff88047f843de0 R08: 0000000000000000 R09: 00000000000004e0 [ 11.278235] R10: ffff8800000bc740 R11: 0000000000000960 R12: 0000000000000200 [ 11.285486] R13: 0000000000000000 R14: ffff88086f852380 R15: 0000000000000297 [ 11.292788] FS: 0000000000000000(0000) GS:ffff88047f840000(0000) knlGS:0000000000000000 [ 11.301055] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 11.306915] CR2: 00007f9b7fe65000 CR3: 0000000001a0c000 CR4: 00000000000007e0 [ 11.314163] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 11.321412] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 11.328685] Process swapper/4 (pid: 0, threadinfo ffff88046f60e000, task ffff88046f60c4c0) [ 11.337117] Stack: [ 11.339244] ffffffff8108aee6 0000000000000086 ffff88086f4636c0 ffff88086f463c30 [ 11.347091] ffff88086f463c38 0000000000000297 ffff88047f843e00 ffffffff8106652d [ 11.354937] 0000000000000004 ffff88086f89e1c0 ffff88047f843e10 ffffffff8106657c [ 11.362763] Call Trace: [ 11.365318] <IRQ> [ 11.367293] [<ffffffff8108aee6>] ? trigger_load_balance+0x1b6/0x260 [ 11.374150] [<ffffffff8106652d>] queue_delayed_work_on+0x4d/0x60 [ 11.380362] [<ffffffff8106657c>] queue_delayed_work+0x1c/0x20 [ 11.386313] [<ffffffff8106659b>] schedule_delayed_work+0x1b/0x20 [ 11.392565] [<ffffffffa000cb3e>] megasas_complete_cmd+0x54e/0x6f0 [megaraid_sas] [ 11.400231] [<ffffffff8106f419>] ? enqueue_hrtimer+0x29/0xc0 [ 11.406105] [<ffffffffa000cd6f>] megasas_complete_cmd_dpc+0x8f/0xf0 [megaraid_sas] [ 11.413957] [<ffffffff8105027a>] tasklet_action+0x6a/0xe0 [ 11.419566] [<ffffffff8104fd80>] __do_softirq+0xd0/0x260 [ 11.425084] [<ffffffff8159da5c>] call_softirq+0x1c/0x30 [ 11.430516] [<ffffffff81004715>] do_softirq+0x75/0xb0 [ 11.435771] [<ffffffff81050095>] irq_exit+0xb5/0xc0 [ 11.440851] [<ffffffff8159e153>] do_IRQ+0x63/0xe0 [ 11.445759] [<ffffffff8159522d>] common_interrupt+0x6d/0x6d [ 11.451526] <EOI> [ 11.453501] [<ffffffff8133017d>] ? intel_idle+0xed/0x150 [ 11.459417] [<ffffffff8133015e>] ? intel_idle+0xce/0x150 [ 11.464932] [<ffffffff8145e389>] cpuidle_enter+0x19/0x20 [ 11.470462] [<ffffffff8145ea57>] cpuidle_idle_call+0xa7/0x340 [ 11.476459] [<ffffffff8100bf0a>] cpu_idle+0x7a/0xf0 [ 11.481541] [<ffffffff81581995>] start_secondary+0x209/0x20b [ 11.487455] Code: 85 74 ff ff ff 65 8b 3c 25 c4 b0 00 00 e9 67 ff ff ff 0f 1f 40 00 48 3b 52 48 0f 85 11 ff ff ff 66 0f 1f 44 00 00 e9 13 ff ff ff <0f> 0b 0f 0b 44 89 e6 4c 89 ff e8 5c 1c ff ff e9 7c ff ff ff e8 [ 11.510825] RIP [<ffffffff810663f5>] __queue_delayed_work+0x135/0x180 [ 11.517532] RSP <ffff88047f843db0> [ 11.521138] ---[ end trace 61c662a962be9ab8 ]--- [ 11.527550] Kernel panic - not syncing: Fatal exception in interrupt -- Mel Gorman SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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