From: Grygorii Strashko <grygorii.strashko@ti.com>
To: <linux-rt-users@vger.kernel.org>
Cc: linux-arm <linux-arm-kernel@lists.infradead.org>,
Felipe Balbi <balbi@ti.com>, Sekhar Nori <nsekhar@ti.com>
Subject: [4.1.3-rt3] [report][suspend to ram] BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:917
Date: Wed, 12 Aug 2015 21:25:50 +0300 [thread overview]
Message-ID: <55CB8FAE.9020309@ti.com> (raw)
Hi All,
I can constantly see below error report with RT-kernel on TI ARM dra7-evm
if I'm trying to do Suspend to RAM.
Sometimes, It's displayed alone (Log1) and sometimes in combination with
"INFO: suspicious RCU usage" (Log2).
Below error was not reproduced on vanilla kernel (4.2-rc6).
I don't know if there are any relations, but on vanilla kernel (4.2-rc6)
i can see issue listed in log 3 (just in case).
I'm not familiar with affected code parts and would be appreciated for any comments.
===== LOG 1 =====
Disabling non-boot CPUs ...
PM: noirq suspend of devices complete after 7.295 msecs
[ 100.285729] Disabling non-boot CPUs ...
[ 100.287575] BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:917
[ 100.287580] in_atomic(): 1, irqs_disabled(): 128, pid: 18, name: migration/1
[ 100.287583] INFO: lockdep is turned off.
[ 100.287586] irq event stamp: 122
[ 100.287600] hardirqs last enabled at (121): [<c06ac0ac>] _raw_spin_unlock_irqrestore+0x88/0x90
[ 100.287609] hardirqs last disabled at (122): [<c06abed0>] _raw_spin_lock_irq+0x28/0x5c
[ 100.287620] softirqs last enabled at (0): [<c003d294>] copy_process.part.52+0x410/0x19d8
[ 100.287625] softirqs last disabled at (0): [< (null)>] (null)
[ 100.287630] Preemption disabled at:[< (null)>] (null)
[ 100.287631]
[ 100.287639] CPU: 1 PID: 18 Comm: migration/1 Tainted: G W 4.1.4-rt3-01046-g96ac8da #204
[ 100.287642] Hardware name: Generic DRA74X (Flattened Device Tree)
[ 100.287659] [<c0019134>] (unwind_backtrace) from [<c0014774>] (show_stack+0x20/0x24)
[ 100.287671] [<c0014774>] (show_stack) from [<c06a70f4>] (dump_stack+0x88/0xdc)
[ 100.287681] [<c06a70f4>] (dump_stack) from [<c006cab8>] (___might_sleep+0x198/0x2a8)
[ 100.287689] [<c006cab8>] (___might_sleep) from [<c06ac4dc>] (rt_spin_lock+0x30/0x70)
[ 100.287699] [<c06ac4dc>] (rt_spin_lock) from [<c013f790>] (find_lock_task_mm+0x9c/0x174)
[ 100.287710] [<c013f790>] (find_lock_task_mm) from [<c00409ac>] (clear_tasks_mm_cpumask+0xb4/0x1ac)
[ 100.287720] [<c00409ac>] (clear_tasks_mm_cpumask) from [<c00166a4>] (__cpu_disable+0x98/0xbc)
[ 100.287728] [<c00166a4>] (__cpu_disable) from [<c06a2e8c>] (take_cpu_down+0x1c/0x50)
[ 100.287742] [<c06a2e8c>] (take_cpu_down) from [<c00f2600>] (multi_cpu_stop+0x11c/0x158)
[ 100.287754] [<c00f2600>] (multi_cpu_stop) from [<c00f2a9c>] (cpu_stopper_thread+0xc4/0x184)
[ 100.287767] [<c00f2a9c>] (cpu_stopper_thread) from [<c0069058>] (smpboot_thread_fn+0x18c/0x324)
[ 100.287779] [<c0069058>] (smpboot_thread_fn) from [<c00649c4>] (kthread+0xe8/0x104)
[ 100.287791] [<c00649c4>] (kthread) from [<c0010058>] (ret_from_fork+0x14/0x3c)
[ 100.288114] CPU1: shutdown
[ 100.317696] PM: Calling sched_clock_suspend+0x0/0x40
[ 100.317698] PM: Calling timekeeping_suspend+0x0/0x2e0
[ 100.317698] PM: Calling irq_gc_suspend+0x0/0x68
[ 100.317698] PM: Calling fw_suspend+0x0/0x2c
[ 100.317698] PM: Calling cpu_pm_suspend+0x0/0x28
==== LOG 2 ====
[ 156.125122] PM: noirq suspend of devices complete after 16.499 msecs
[ 156.125250] Disabling non-boot CPUs ...
[ 156.153626] NOHZ: local_softirq_pending 02
[ 156.154939] BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:917
[ 156.154943] in_atomic(): 1, irissueqs_disabled(): 128, pid: 18, name: migration/1
[ 156.154948] 2 locks held by migration/1/18:
[ 156.154974] #0: (rcu_read_lock){......}, at: [<c004093c>] clear_tasks_mm_cpumask+0x44/0x1ac
[ 156.154992] #1: (rcu_read_lock){......}, at: [<c013f6f4>] find_lock_task_mm+0x0/0x174
[ 156.154995] irq event stamp: 126
[ 156.155005] hardirqs last enabled at (125): [<c06ac0e8>] _raw_spin_unlock_irq+0x34/0x78
[ 156.155016] hardirqs last disabled at (126): [<c00f25d8>] multi_cpu_stop+0xf4/0x158
[ 156.155025] softirqs last enabled at (0): [<c003d294>] copy_process.part.52+0x410/0x19d8
[ 156.155031] softirqs last disabled at (0): [< (null)>] (null)
[ 156.155036] Preemption disabled at:[< (null)>] (null)
[ 156.155038]
[ 156.155046] CPU: 1 PID: 18 Comm: migration/1 Tainted: G W 4.1.4-rt3-01046-g96ac8da #204
[ 156.155049] Hardware name: Generic DRA74X (Flattened Device Tree)
[ 156.155062] [<c0019134>] (unwind_backtrace) from [<c0014774>] (show_stack+0x20/0x24)
[ 156.155074] [<c0014774>] (show_stack) from [<c06a70f4>] (dump_stack+0x88/0xdc)
[ 156.155084] [<c06a70f4>] (dump_stack) from [<c006cab8>] (___might_sleep+0x198/0x2a8)
[ 156.155091] [<c006cab8>] (___might_sleep) from [<c06ac4dc>] (rt_spin_lock+0x30/0x70)
[ 156.155099] [<c06ac4dc>] (rt_spin_lock) from [<c013f790>] (find_lock_task_mm+0x9c/0x174)
[ 156.155109] [<c013f790>] (find_lock_task_mm) from [<c00409ac>] (clear_tasks_mm_cpumask+0xb4/0x1ac)
[ 156.155118] [<c00409ac>] (clear_tasks_mm_cpumask) from [<c00166a4>] (__cpu_disable+0x98/0xbc)
[ 156.155126] [<c00166a4>] (__cpu_disable) from [<c06a2e8c>] (take_cpu_down+0x1c/0x50)
[ 156.155136] [<c06a2e8c>] (take_cpu_down) from [<c00f2600>] (multi_cpu_stop+0x11c/0x158)
[ 156.155147] [<c00f2600>] (multi_cpu_stop) from [<c00f2a9c>] (cpu_stopper_thread+0xc4/0x184)
[ 156.155158] [<c00f2a9c>] (cpu_stopper_thread) from [<c0069058>] (smpboot_thread_fn+0x18c/0x324)
[ 156.155170] [<c0069058>] (smpboot_thread_fn) from [<c00649c4>] (kthread+0xe8/0x104)
[ 156.155181] [<c00649c4>] (kthread) from [<c0010058>] (ret_from_fork+0x14/0x3c)
[ 156.156643]
[ 156.156646] ===============================
[ 156.156648] [ INFO: suspicious RCU usage. ]
[ 156.156653] 4.1.4-rt3-01046-g96ac8da #204 Tainted: G W
[ 156.156655] -------------------------------
[ 156.156660] include/trace/events/power.h:297 suspicious rcu_dereference_check() usage!
[ 156.156662]
[ 156.156662] other info that might help us debug this:
[ 156.156662]
[ 156.156666]
[ 156.156666] RCU used illegally from offline CPU!
[ 156.156666] rcu_scheduler_active = 1, debug_locks = 0
[ 156.156670] no locks held by swapper/1/0.
[ 156.156671]
[ 156.156671] stack backtrace:
[ 156.156678] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G W 4.1.4-rt3-01046-g96ac8da #204
[ 156.156681] Hardware name: Generic DRA74X (Flattened Device Tree)
[ 156.156692] [<c0019134>] (unwind_backtrace) from [<c0014774>] (show_stack+0x20/0x24)
[ 156.156702] [<c0014774>] (show_stack) from [<c06a70f4>] (dump_stack+0x88/0xdc)
[ 156.156715] [<c06a70f4>] (dump_stack) from [<c0091258>] (lockdep_rcu_suspicious+0xbc/0x11c)
[ 156.156728] [<c0091258>] (lockdep_rcu_suspicious) from [<c00334d0>] (pwrdm_set_next_pwrst+0x134/0x2ec)
[ 156.156740] [<c00334d0>] (pwrdm_set_next_pwrst) from [<c002f8ac>] (omap4_hotplug_cpu+0x68/0xd4)
[ 156.156751] [<c002f8ac>] (omap4_hotplug_cpu) from [<c06a2d48>] (omap4_cpu_die+0x54/0x9c)
[ 156.156759] [<c06a2d48>] (omap4_cpu_die) from [<c06a2cac>] (cpu_die+0x5c/0xa4)
[ 156.156769] [<c06a2cac>] (cpu_die) from [<c0010bdc>] (arch_cpu_idle_dead+0x18/0x1c)
[ 156.156780] [<c0010bdc>] (arch_cpu_idle_dead) from [<c008d7d4>] (cpu_startup_entry+0x22c/0x4f0)
[ 156.156789] [<c008d7d4>] (cpu_startup_entry) from [<c001688c>] (secondary_start_kernel+0x130/0x14c)
[ 156.156792] CPU1: shutdown
[ 156.156799] [<c001688c>] (secondary_start_kernel) from [<8000970c>] (0x8000970c)
[ 156.186995] PM: Calling sched_clock_suspend+0x0/0x40
[ 156.186997] PM: Calling timekeeping_suspend+0x0/0x2e0
[ 156.186997] PM: Calling irq_gc_suspend+0x0/0x68
[ 156.186997] PM: Calling fw_suspend+0x0/0x2c
[ 156.186997] PM: Calling cpu_pm_suspend+0x0/0x28
===== LOG 3 =====
[ 8.099469] PM: suspend of devices complete after 7.968 msecs
[ 8.103121] PM: late suspend of devices complete after 3.642 msecs
[ 8.114611] PM: noirq suspend of devices complete after 11.481 msecs
[ 8.114670] Disabling non-boot CPUs ...
[ 8.119535]
[ 8.119538] ===============================
[ 8.119540] [ INFO: suspicious RCU usage. ]
[ 8.119545] 4.2.0-rc6-00011-g4a7ab45-dirty #50 Not tainted
[ 8.119548] -------------------------------
[ 8.119552] kernel/sched/fair.c:5032 suspicious rcu_dereference_check() usage!
[ 8.119554]
[ 8.119554] other info that might help us debug this:
[ 8.119554]
[ 8.119558]
[ 8.119558] RCU used illegally from offline CPU!
[ 8.119558] rcu_scheduler_active = 1, debug_locks = 0
[ 8.119562] 3 locks held by swapper/1/0:
[ 8.119585] #0: ((cpu_died).wait.lock){......}, at: [<c00837a4>] complete+0x14/0x44
[ 8.119606] #1: (&p->pi_lock){-.-.-.}, at: [<c006ab00>] try_to_wake_up+0x2c/0x410
[ 8.119622] #2: (rcu_read_lock){......}, at: [<c0072c84>] select_task_rq_fair+0x60/0xae0
[ 8.119625]
[ 8.119625] stack backtrace:
[ 8.119631] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.2.0-rc6-00011-g4a7ab45-dirty #50
[ 8.119634] Hardware name: Generic DRA74X (Flattened Device Tree)
[ 8.119646] [<c0016e24>] (unwind_backtrace) from [<c0013338>] (show_stack+0x10/0x14)
[ 8.119656] [<c0013338>] (show_stack) from [<c05f6b2c>] (dump_stack+0x84/0x9c)
[ 8.119665] [<c05f6b2c>] (dump_stack) from [<c0073338>] (select_task_rq_fair+0x714/0xae0)
[ 8.119675] [<c0073338>] (select_task_rq_fair) from [<c006abf0>] (try_to_wake_up+0x11c/0x410)
[ 8.119684] [<c006abf0>] (try_to_wake_up) from [<c0082fe8>] (__wake_up_common+0x4c/0x80)
[ 8.119690] [<c0082fe8>] (__wake_up_common) from [<c0083030>] (__wake_up_locked+0x14/0x1c)
[ 8.119697] [<c0083030>] (__wake_up_locked) from [<c00837c4>] (complete+0x34/0x44)
[ 8.119705] [<c00837c4>] (complete) from [<c05f2d34>] (cpu_die+0x34/0x9c)
[ 8.119713] [<c05f2d34>] (cpu_die) from [<c0083be0>] (cpu_startup_entry+0x204/0x314)
[ 8.119720] [<c0083be0>] (cpu_startup_entry) from [<800095ac>] (0x800095ac)
[ 8.119748] CPU1: shutdown
--
regards,
-grygorii
WARNING: multiple messages have this Message-ID (diff)
From: grygorii.strashko@ti.com (Grygorii Strashko)
To: linux-arm-kernel@lists.infradead.org
Subject: [4.1.3-rt3] [report][suspend to ram] BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:917
Date: Wed, 12 Aug 2015 21:25:50 +0300 [thread overview]
Message-ID: <55CB8FAE.9020309@ti.com> (raw)
Hi All,
I can constantly see below error report with RT-kernel on TI ARM dra7-evm
if I'm trying to do Suspend to RAM.
Sometimes, It's displayed alone (Log1) and sometimes in combination with
"INFO: suspicious RCU usage" (Log2).
Below error was not reproduced on vanilla kernel (4.2-rc6).
I don't know if there are any relations, but on vanilla kernel (4.2-rc6)
i can see issue listed in log 3 (just in case).
I'm not familiar with affected code parts and would be appreciated for any comments.
===== LOG 1 =====
Disabling non-boot CPUs ...
PM: noirq suspend of devices complete after 7.295 msecs
[ 100.285729] Disabling non-boot CPUs ...
[ 100.287575] BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:917
[ 100.287580] in_atomic(): 1, irqs_disabled(): 128, pid: 18, name: migration/1
[ 100.287583] INFO: lockdep is turned off.
[ 100.287586] irq event stamp: 122
[ 100.287600] hardirqs last enabled at (121): [<c06ac0ac>] _raw_spin_unlock_irqrestore+0x88/0x90
[ 100.287609] hardirqs last disabled at (122): [<c06abed0>] _raw_spin_lock_irq+0x28/0x5c
[ 100.287620] softirqs last enabled at (0): [<c003d294>] copy_process.part.52+0x410/0x19d8
[ 100.287625] softirqs last disabled at (0): [< (null)>] (null)
[ 100.287630] Preemption disabled at:[< (null)>] (null)
[ 100.287631]
[ 100.287639] CPU: 1 PID: 18 Comm: migration/1 Tainted: G W 4.1.4-rt3-01046-g96ac8da #204
[ 100.287642] Hardware name: Generic DRA74X (Flattened Device Tree)
[ 100.287659] [<c0019134>] (unwind_backtrace) from [<c0014774>] (show_stack+0x20/0x24)
[ 100.287671] [<c0014774>] (show_stack) from [<c06a70f4>] (dump_stack+0x88/0xdc)
[ 100.287681] [<c06a70f4>] (dump_stack) from [<c006cab8>] (___might_sleep+0x198/0x2a8)
[ 100.287689] [<c006cab8>] (___might_sleep) from [<c06ac4dc>] (rt_spin_lock+0x30/0x70)
[ 100.287699] [<c06ac4dc>] (rt_spin_lock) from [<c013f790>] (find_lock_task_mm+0x9c/0x174)
[ 100.287710] [<c013f790>] (find_lock_task_mm) from [<c00409ac>] (clear_tasks_mm_cpumask+0xb4/0x1ac)
[ 100.287720] [<c00409ac>] (clear_tasks_mm_cpumask) from [<c00166a4>] (__cpu_disable+0x98/0xbc)
[ 100.287728] [<c00166a4>] (__cpu_disable) from [<c06a2e8c>] (take_cpu_down+0x1c/0x50)
[ 100.287742] [<c06a2e8c>] (take_cpu_down) from [<c00f2600>] (multi_cpu_stop+0x11c/0x158)
[ 100.287754] [<c00f2600>] (multi_cpu_stop) from [<c00f2a9c>] (cpu_stopper_thread+0xc4/0x184)
[ 100.287767] [<c00f2a9c>] (cpu_stopper_thread) from [<c0069058>] (smpboot_thread_fn+0x18c/0x324)
[ 100.287779] [<c0069058>] (smpboot_thread_fn) from [<c00649c4>] (kthread+0xe8/0x104)
[ 100.287791] [<c00649c4>] (kthread) from [<c0010058>] (ret_from_fork+0x14/0x3c)
[ 100.288114] CPU1: shutdown
[ 100.317696] PM: Calling sched_clock_suspend+0x0/0x40
[ 100.317698] PM: Calling timekeeping_suspend+0x0/0x2e0
[ 100.317698] PM: Calling irq_gc_suspend+0x0/0x68
[ 100.317698] PM: Calling fw_suspend+0x0/0x2c
[ 100.317698] PM: Calling cpu_pm_suspend+0x0/0x28
==== LOG 2 ====
[ 156.125122] PM: noirq suspend of devices complete after 16.499 msecs
[ 156.125250] Disabling non-boot CPUs ...
[ 156.153626] NOHZ: local_softirq_pending 02
[ 156.154939] BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:917
[ 156.154943] in_atomic(): 1, irissueqs_disabled(): 128, pid: 18, name: migration/1
[ 156.154948] 2 locks held by migration/1/18:
[ 156.154974] #0: (rcu_read_lock){......}, at: [<c004093c>] clear_tasks_mm_cpumask+0x44/0x1ac
[ 156.154992] #1: (rcu_read_lock){......}, at: [<c013f6f4>] find_lock_task_mm+0x0/0x174
[ 156.154995] irq event stamp: 126
[ 156.155005] hardirqs last enabled at (125): [<c06ac0e8>] _raw_spin_unlock_irq+0x34/0x78
[ 156.155016] hardirqs last disabled at (126): [<c00f25d8>] multi_cpu_stop+0xf4/0x158
[ 156.155025] softirqs last enabled at (0): [<c003d294>] copy_process.part.52+0x410/0x19d8
[ 156.155031] softirqs last disabled at (0): [< (null)>] (null)
[ 156.155036] Preemption disabled at:[< (null)>] (null)
[ 156.155038]
[ 156.155046] CPU: 1 PID: 18 Comm: migration/1 Tainted: G W 4.1.4-rt3-01046-g96ac8da #204
[ 156.155049] Hardware name: Generic DRA74X (Flattened Device Tree)
[ 156.155062] [<c0019134>] (unwind_backtrace) from [<c0014774>] (show_stack+0x20/0x24)
[ 156.155074] [<c0014774>] (show_stack) from [<c06a70f4>] (dump_stack+0x88/0xdc)
[ 156.155084] [<c06a70f4>] (dump_stack) from [<c006cab8>] (___might_sleep+0x198/0x2a8)
[ 156.155091] [<c006cab8>] (___might_sleep) from [<c06ac4dc>] (rt_spin_lock+0x30/0x70)
[ 156.155099] [<c06ac4dc>] (rt_spin_lock) from [<c013f790>] (find_lock_task_mm+0x9c/0x174)
[ 156.155109] [<c013f790>] (find_lock_task_mm) from [<c00409ac>] (clear_tasks_mm_cpumask+0xb4/0x1ac)
[ 156.155118] [<c00409ac>] (clear_tasks_mm_cpumask) from [<c00166a4>] (__cpu_disable+0x98/0xbc)
[ 156.155126] [<c00166a4>] (__cpu_disable) from [<c06a2e8c>] (take_cpu_down+0x1c/0x50)
[ 156.155136] [<c06a2e8c>] (take_cpu_down) from [<c00f2600>] (multi_cpu_stop+0x11c/0x158)
[ 156.155147] [<c00f2600>] (multi_cpu_stop) from [<c00f2a9c>] (cpu_stopper_thread+0xc4/0x184)
[ 156.155158] [<c00f2a9c>] (cpu_stopper_thread) from [<c0069058>] (smpboot_thread_fn+0x18c/0x324)
[ 156.155170] [<c0069058>] (smpboot_thread_fn) from [<c00649c4>] (kthread+0xe8/0x104)
[ 156.155181] [<c00649c4>] (kthread) from [<c0010058>] (ret_from_fork+0x14/0x3c)
[ 156.156643]
[ 156.156646] ===============================
[ 156.156648] [ INFO: suspicious RCU usage. ]
[ 156.156653] 4.1.4-rt3-01046-g96ac8da #204 Tainted: G W
[ 156.156655] -------------------------------
[ 156.156660] include/trace/events/power.h:297 suspicious rcu_dereference_check() usage!
[ 156.156662]
[ 156.156662] other info that might help us debug this:
[ 156.156662]
[ 156.156666]
[ 156.156666] RCU used illegally from offline CPU!
[ 156.156666] rcu_scheduler_active = 1, debug_locks = 0
[ 156.156670] no locks held by swapper/1/0.
[ 156.156671]
[ 156.156671] stack backtrace:
[ 156.156678] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G W 4.1.4-rt3-01046-g96ac8da #204
[ 156.156681] Hardware name: Generic DRA74X (Flattened Device Tree)
[ 156.156692] [<c0019134>] (unwind_backtrace) from [<c0014774>] (show_stack+0x20/0x24)
[ 156.156702] [<c0014774>] (show_stack) from [<c06a70f4>] (dump_stack+0x88/0xdc)
[ 156.156715] [<c06a70f4>] (dump_stack) from [<c0091258>] (lockdep_rcu_suspicious+0xbc/0x11c)
[ 156.156728] [<c0091258>] (lockdep_rcu_suspicious) from [<c00334d0>] (pwrdm_set_next_pwrst+0x134/0x2ec)
[ 156.156740] [<c00334d0>] (pwrdm_set_next_pwrst) from [<c002f8ac>] (omap4_hotplug_cpu+0x68/0xd4)
[ 156.156751] [<c002f8ac>] (omap4_hotplug_cpu) from [<c06a2d48>] (omap4_cpu_die+0x54/0x9c)
[ 156.156759] [<c06a2d48>] (omap4_cpu_die) from [<c06a2cac>] (cpu_die+0x5c/0xa4)
[ 156.156769] [<c06a2cac>] (cpu_die) from [<c0010bdc>] (arch_cpu_idle_dead+0x18/0x1c)
[ 156.156780] [<c0010bdc>] (arch_cpu_idle_dead) from [<c008d7d4>] (cpu_startup_entry+0x22c/0x4f0)
[ 156.156789] [<c008d7d4>] (cpu_startup_entry) from [<c001688c>] (secondary_start_kernel+0x130/0x14c)
[ 156.156792] CPU1: shutdown
[ 156.156799] [<c001688c>] (secondary_start_kernel) from [<8000970c>] (0x8000970c)
[ 156.186995] PM: Calling sched_clock_suspend+0x0/0x40
[ 156.186997] PM: Calling timekeeping_suspend+0x0/0x2e0
[ 156.186997] PM: Calling irq_gc_suspend+0x0/0x68
[ 156.186997] PM: Calling fw_suspend+0x0/0x2c
[ 156.186997] PM: Calling cpu_pm_suspend+0x0/0x28
===== LOG 3 =====
[ 8.099469] PM: suspend of devices complete after 7.968 msecs
[ 8.103121] PM: late suspend of devices complete after 3.642 msecs
[ 8.114611] PM: noirq suspend of devices complete after 11.481 msecs
[ 8.114670] Disabling non-boot CPUs ...
[ 8.119535]
[ 8.119538] ===============================
[ 8.119540] [ INFO: suspicious RCU usage. ]
[ 8.119545] 4.2.0-rc6-00011-g4a7ab45-dirty #50 Not tainted
[ 8.119548] -------------------------------
[ 8.119552] kernel/sched/fair.c:5032 suspicious rcu_dereference_check() usage!
[ 8.119554]
[ 8.119554] other info that might help us debug this:
[ 8.119554]
[ 8.119558]
[ 8.119558] RCU used illegally from offline CPU!
[ 8.119558] rcu_scheduler_active = 1, debug_locks = 0
[ 8.119562] 3 locks held by swapper/1/0:
[ 8.119585] #0: ((cpu_died).wait.lock){......}, at: [<c00837a4>] complete+0x14/0x44
[ 8.119606] #1: (&p->pi_lock){-.-.-.}, at: [<c006ab00>] try_to_wake_up+0x2c/0x410
[ 8.119622] #2: (rcu_read_lock){......}, at: [<c0072c84>] select_task_rq_fair+0x60/0xae0
[ 8.119625]
[ 8.119625] stack backtrace:
[ 8.119631] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.2.0-rc6-00011-g4a7ab45-dirty #50
[ 8.119634] Hardware name: Generic DRA74X (Flattened Device Tree)
[ 8.119646] [<c0016e24>] (unwind_backtrace) from [<c0013338>] (show_stack+0x10/0x14)
[ 8.119656] [<c0013338>] (show_stack) from [<c05f6b2c>] (dump_stack+0x84/0x9c)
[ 8.119665] [<c05f6b2c>] (dump_stack) from [<c0073338>] (select_task_rq_fair+0x714/0xae0)
[ 8.119675] [<c0073338>] (select_task_rq_fair) from [<c006abf0>] (try_to_wake_up+0x11c/0x410)
[ 8.119684] [<c006abf0>] (try_to_wake_up) from [<c0082fe8>] (__wake_up_common+0x4c/0x80)
[ 8.119690] [<c0082fe8>] (__wake_up_common) from [<c0083030>] (__wake_up_locked+0x14/0x1c)
[ 8.119697] [<c0083030>] (__wake_up_locked) from [<c00837c4>] (complete+0x34/0x44)
[ 8.119705] [<c00837c4>] (complete) from [<c05f2d34>] (cpu_die+0x34/0x9c)
[ 8.119713] [<c05f2d34>] (cpu_die) from [<c0083be0>] (cpu_startup_entry+0x204/0x314)
[ 8.119720] [<c0083be0>] (cpu_startup_entry) from [<800095ac>] (0x800095ac)
[ 8.119748] CPU1: shutdown
--
regards,
-grygorii
next reply other threads:[~2015-08-12 18:26 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-12 18:25 Grygorii Strashko [this message]
2015-08-12 18:25 ` [4.1.3-rt3] [report][suspend to ram] BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:917 Grygorii Strashko
2015-08-16 11:42 ` Sebastian Andrzej Siewior
2015-08-16 11:42 ` Sebastian Andrzej Siewior
2015-08-17 15:46 ` Grygorii Strashko
2015-08-17 15:46 ` Grygorii Strashko
2015-09-04 16:46 ` Grygorii Strashko
2015-09-04 16:46 ` Grygorii Strashko
2015-12-11 16:20 ` Sebastian Andrzej Siewior
2015-12-11 16:20 ` Sebastian Andrzej Siewior
2015-12-12 8:29 ` Grygorii Strashko
2015-12-12 8:29 ` Grygorii Strashko
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