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Date: Mon, 14 Dec 2015 21:29:12 +0100 From: Belisko Marek <marek.belisko@...il.com> To: LKML <linux-kernel@...r.kernel.org>, "linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org> Cc: "Dr. H. Nikolaus Schaller" <hns@...delico.com> Subject: 4.4-rc5 : INFO: rcu_sched detected stalls on CPUs/tasks in twl4030_bci_usb_ncb Hi, randomly hit this issue from 4.4-rc1: [ 35.926605] INFO: rcu_sched detected stalls on CPUs/tasks: [ 35.932373] (detected by 0, t=2602 jiffies, g=519, c=518, q=38) [ 35.938659] All QSes seen, last rcu_sched kthread activity 2602 (-26407--29009), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 35.950317] kworker/0:2 R running 0 964 2 0x00000002 [ 35.957031] Workqueue: events omap_musb_mailbox_work [ 35.962249] [<c0016db4>] (unwind_backtrace) from [<c0013438>] (show_stack+0x10/0x14) [ 35.970367] [<c0013438>] (show_stack) from [<c009a4a4>] (rcu_check_callbacks+0x548/0x774) [ 35.978942] [<c009a4a4>] (rcu_check_callbacks) from [<c009edc8>] (update_process_times+0x30/0x5c) [ 35.988250] [<c009edc8>] (update_process_times) from [<c00aeb38>] (tick_sched_handle+0x48/0x54) [ 35.997375] [<c00aeb38>] (tick_sched_handle) from [<c00aeb9c>] (tick_sched_timer+0x58/0x9c) [ 36.006103] [<c00aeb9c>] (tick_sched_timer) from [<c009f7d8>] (__hrtimer_run_queues+0x198/0x2b0) [ 36.015319] [<c009f7d8>] (__hrtimer_run_queues) from [<c009ff9c>] (hrtimer_interrupt+0xac/0x1f4) [ 36.024536] [<c009ff9c>] (hrtimer_interrupt) from [<c00242e4>] (omap2_gp_timer_interrupt+0x20/0x30) [ 36.034027] [<c00242e4>] (omap2_gp_timer_interrupt) from [<c008de8c>] (handle_irq_event_percpu+0x78/0x1d4) [ 36.044128] [<c008de8c>] (handle_irq_event_percpu) from [<c008e020>] (handle_irq_event+0x38/0x5c) [ 36.053436] [<c008e020>] (handle_irq_event) from [<c00910b0>] (handle_level_irq+0xf0/0x130) [ 36.062194] [<c00910b0>] (handle_level_irq) from [<c008d5a4>] (generic_handle_irq+0x18/0x28) [ 36.071014] [<c008d5a4>] (generic_handle_irq) from [<c008d8b0>] (__handle_domain_irq+0x98/0xd8) [ 36.080139] [<c008d8b0>] (__handle_domain_irq) from [<c05a58b8>] (__irq_svc+0x58/0x78) [ 36.088470] [<c05a58b8>] (__irq_svc) from [<bf0049a0>] (twl4030_bci_usb_ncb+0x10/0x4c [twl4030_charger]) [ 36.098449] [<bf0049a0>] (twl4030_bci_usb_ncb [twl4030_charger]) from [<c00587b8>] (notifier_call_chain+0x48/0x70) [ 36.109283] [<c00587b8>] (notifier_call_chain) from [<c0058918>] (__atomic_notifier_call_chain+0x94/0x118) [ 36.119415] [<c0058918>] (__atomic_notifier_call_chain) from [<c00589b0>] (atomic_notifier_call_chain+0x14/0x1c) [ 36.130065] [<c00589b0>] (atomic_notifier_call_chain) from [<c04322a0>] (omap_musb_mailbox_work+0x28/0x48) [ 36.140197] [<c04322a0>] (omap_musb_mailbox_work) from [<c0051e2c>] (process_one_work+0x284/0x484) [ 36.149597] [<c0051e2c>] (process_one_work) from [<c0052f98>] (worker_thread+0x2a4/0x3d8) [ 36.158142] [<c0052f98>] (worker_thread) from [<c0057960>] (kthread+0xd8/0xec) [ 36.165740] [<c0057960>] (kthread) from [<c000ef70>] (ret_from_fork+0x14/0x24) [ 36.173309] rcu_sched kthread starved for 2602 jiffies! g519 c518 f0x2 s3 ->state=0x0 is it known problem? Is there fix for this issue? Thanks. BR, marek -- as simple and primitive as possible ------------------------------------------------- Marek Belisko - OPEN-NANDRA Freelance Developer Ruska Nova Ves 219 | Presov, 08005 Slovak Republic Tel: +421 915 052 184 skype: marekwhite twitter: #opennandra web: http://open-nandra.com -- 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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