如何解决内核4.4.192自旋锁已解锁
在正常使用期间，系统被锁定，并且以下消息出现在屏幕上。从日志中可以看到，自旋锁所有者和cpu均为-1。 BUG之后，系统将通过WatchDog重新启动。
我们的cpu是ARM Cortex A9 iMX6DL，两个内核都处于活动状态。
您对此BUG的根本原因有任何想法吗？
BUG: spinlock already unlocked on cpu#0,Wq#2(System)/830
lock: 0xbf1f7f04,.magic: dead4ead,.owner: <none>/-1,.owner_cpu: -1
cpu: 0 PID: 830 Comm: Wq#2(System) Tainted: G O 4.4.192+prod #1
Hardware name: TESTBOARD (Device Tree)
Backtrace:
[<80015584>] (dump_backtrace) from [<800157cc>] (show_stack+0x20/0x24)
r7:00000000 r6:60030013 r5:00000000 r4:80a28da8
[<800157ac>] (show_stack) from [<8030ac20>] (dump_stack+0xdc/0x110)
[<8030ab44>] (dump_stack) from [<80087c3c>] (spin_dump+0x90/0xdc)
r9:bf1f7f00 r8:bdb07e40 r7:bdb07e5c r6:bdb07e04 r5:ffffffff r4:bf1f7f04
[<80087bac>] (spin_dump) from [<80088004>] (do_raw_spin_unlock+0xc4/0x130)
r5:74f00010 r4:bf1f7f04
[<80087f40>] (do_raw_spin_unlock) from [<8060d808>] (_raw_spin_unlock+0x30/0x34)
r5:74f00010 r4:bf1f7f04
[<8060d7d8>] (_raw_spin_unlock) from [<800b74f8>] (futex_wait_setup+0x148/0x1a8)
r5:74f00010 r4:bf1f7f00
[<800b73b0>] (futex_wait_setup) from [<800b77b0>] (futex_wait+0xf0/0x228)
r10:74f00010 r9:74f00010 r8:00000002 r7:00000000 r6:bdb06000 r5:00000000
r4:00000000
[<800b76c0>] (futex_wait) from [<800b94e8>] (do_futex+0x104/0xca0)
r10:74f00010 r9:bdb06000 r8:80010b04 r7:74f00010 r6:00000000 r5:00000002
r4:00000000
[<800b93e4>] (do_futex) from [<800ba10c>] (SyS_futex+0x88/0x188)
r10:00000000 r9:bdb06000 r8:80010b04 r7:74f00010 r6:00000080 r5:00000000
r4:00000000
[<800ba084>] (SyS_futex) from [<80010940>] (ret_fast_syscall+0x0/0x1c)
r10:00000000 r9:bdb06000 r8:80010b04 r7:000000f0 r6:769ccd1a r5:000000dc
r4:74f00010
BUG: spinlock lockup SUSPECTed on cpu#0,.owner_cpu: -1
cpu: 0 PID: 830 Comm: Wq#2(System) Tainted: G O 4.4.192+prod #1
Hardware name: TESTBOARD (Device Tree)
Backtrace:
[<80015584>] (dump_backtrace) from [<800157cc>] (show_stack+0x20/0x24)
r7:00000000 r6:60030013 r5:00000000 r4:80a28da8
[<800157ac>] (show_stack) from [<8030ac20>] (dump_stack+0xdc/0x110)
[<8030ab44>] (dump_stack) from [<80087c3c>] (spin_dump+0x90/0xdc)
r9:00000000 r8:002dc6c0 r7:00000000 r6:002dc6c0 r5:ffffffff r4:bf1f7f04
[<80087bac>] (spin_dump) from [<80087ddc>] (do_raw_spin_lock+0xfc/0x1f8)
r5:00000001 r4:bf1f7f04
[<80087ce0>] (do_raw_spin_lock) from [<8060d3fc>] (_raw_spin_lock+0x6c/0x80)
r10:bf1f7f00 r9:bdb06000 r8:bf1f7f04 r7:00000001 r6:bf1f7f04 r5:800b75e8
r4:bf1f7f14 r3:00000000
[<8060d390>] (_raw_spin_lock) from [<800b75e8>] (futex_wake+0x90/0x168)
r6:ffffffff r5:00000000 r4:bdb07e64
[<800b7558>] (futex_wake) from [<800b950c>] (do_futex+0x128/0xca0)
r10:74f00010 r9:bdb06000 r8:80010b04 r7:74f00010 r6:00000000 r5:00000001
r4:00000001
[<800b93e4>] (do_futex) from [<800ba10c>] (SyS_futex+0x88/0x188)
r10:00000000 r9:bdb06000 r8:80010b04 r7:74f00010 r6:00000081 r5:00000000
r4:00000001
[<800ba084>] (SyS_futex) from [<80010940>] (ret_fast_syscall+0x0/0x1c)
r10:00000000 r9:bdb06000 r8:80010b04 r7:000000f0 r6:769ccd1a r5:000000dc
r4:74f00010
Sending NMI to all cpus:
NMI backtrace for cpu 0
cpu: 0 PID: 830 Comm: Wq#2(System) Tainted: G O 4.4.192+prod #1
Hardware name: TESTBOARD (Device Tree)
task: bc380000 ti: bdb06000 task.ti: bdb06000
PC is at _raw_spin_unlock_irqrestore+0x44/0x54
LR is at trace_hardirqs_on+0x14/0x18
pc : [<8060d894>] lr : [<8007f158>] psr: 60030013
sp : bdb07d28 ip : bdb07d18 fp : bdb07d3c
r10: 809d6704 r9 : 60030013 r8 : 0000000f
r7 : 809d72d0 r6 : 00000002 r5 : 80a291e0 r4 : 60030013
r3 : 00000000 r2 : 00000000 r1 : bc380000 r0 : 8060d890
Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
Control: 10c5387d Table: 4d1b404a DAC: 00000051
cpu: 0 PID: 830 Comm: Wq#2(System) Tainted: G O 4.4.192+prod #1
Hardware name: TESTBOARD (Device Tree)
Backtrace:
[<80015584>] (dump_backtrace) from [<800157cc>] (show_stack+0x20/0x24)
r7:00000000 r6:60030193 r5:00000000 r4:80a28da8
[<800157ac>] (show_stack) from [<8030ac20>] (dump_stack+0xdc/0x110)
[<8030ab44>] (dump_stack) from [<80011564>] (show_regs+0x1c/0x20)
r9:f4000100 r8:00000000 r7:8008cde4 r6:809ce380 r5:bdb07cd8 r4:00000000
[<80011548>] (show_regs) from [<8030ed30>] (nmi_cpu_backtrace+0x8c/0xd0)
[<8030eca4>] (nmi_cpu_backtrace) from [<80018234>] (handle_IPI+0xd4/0x2e8)
r7:00000000 r6:809d05b8 r5:bdb07cd8 r4:0000000f
[<80018160>] (handle_IPI) from [<80009560>] (gic_handle_irq+0xa8/0xc4)
r10:809d7300 r9:f4000100 r8:80a291e0 r7:bdb07cd8 r6:000003ff r5:000003eb
r4:f400010c r3:00000000
[<800094b8>] (gic_handle_irq) from [<8060e3b8>] (__irq_svc+0x58/0x78)
Exception stack(0xbdb07cd8 to 0xbdb07d20)
7cc0: 8060d890 bc380000
7ce0: 00000000 00000000 60030013 80a291e0 00000002 809d72d0 0000000f 60030013
7d00: 809d6704 bdb07d3c bdb07d18 bdb07d28 8007f158 8060d894 60030013 ffffffff
r10:809d6704 r9:60030013 r8:0000000f r7:bdb07d0c r6:ffffffff r5:60030013
r4:8060d894
[<8060d850>] (_raw_spin_unlock_irqrestore) from [<80337e60>] (gic_raise_softirq+0x88/0x98)
r5:809d7300 r4:0003000f
[<80337dd8>] (gic_raise_softirq) from [<80017854>] (smp_cross_call+0x7c/0x114)
r10:00001000 r9:809d7184 r8:0000000f r7:80a506c8 r6:806139a4 r5:809d72d0
r4:809d72d0 r3:80337dd8
[<800177d8>] (smp_cross_call) from [<80017950>] (raise_nmi+0x64/0x74)
r9:809d7184 r8:809d6704 r7:00000002 r6:809d72d0 r5:809d05c0 r4:809d72d0
[<800178ec>] (raise_nmi) from [<8030f000>] (nmi_trigger_all_cpu_backtrace+0x238/0x280)
r5:809d05c0 r4:809d72d0
[<8030edc8>] (nmi_trigger_all_cpu_backtrace) from [<8001862c>] (arch_trigger_all_cpu_backtrace+0x1c/0x24)
r10:80a28d90 r9:00000000 r8:002dc6c0 r7:00000000 r6:002dc6c0 r5:00000001
r4:bf1f7f04
[<80018610>] (arch_trigger_all_cpu_backtrace) from [<80087de8>] (do_raw_spin_lock+0x108/0x1f8)
[<80087ce0>] (do_raw_spin_lock) from [<8060d3fc>] (_raw_spin_lock+0x6c/0x80)
r10:bf1f7f00 r9:bdb06000 r8:bf1f7f04 r7:00000001 r6:bf1f7f04 r5:800b75e8
r4:bf1f7f14 r3:00000000
[<8060d390>] (_raw_spin_lock) from [<800b75e8>] (futex_wake+0x90/0x168)
r6:ffffffff r5:00000000 r4:bdb07e64
[<800b7558>] (futex_wake) from [<800b950c>] (do_futex+0x128/0xca0)
r10:74f00010 r9:bdb06000 r8:80010b04 r7:74f00010 r6:00000000 r5:00000001
r4:00000001
[<800b93e4>] (do_futex) from [<800ba10c>] (SyS_futex+0x88/0x188)
r10:00000000 r9:bdb06000 r8:80010b04 r7:74f00010 r6:00000081 r5:00000000
r4:00000001
[<800ba084>] (SyS_futex) from [<80010940>] (ret_fast_syscall+0x0/0x1c)
r10:00000000 r9:bdb06000 r8:80010b04 r7:000000f0 r6:769ccd1a r5:000000dc
r4:74f00010
NMI backtrace for cpu 1
cpu: 1 PID: 715 Comm: syslogd Tainted: G O 4.4.192+prod #1
Hardware name: TESTBOARD (Device Tree)
task: bd889f80 ti: bd810000 task.ti: bd810000
PC is at 0x13f18
LR is at 0x4c8e8
pc : [<00013f18>] lr : [<0004c8e8>] psr: 600f0010
sp : 7ea97bc8 ip : 00000000 fp : 00903008
r10: 0090308c r9 : 00000028 r8 : 000aeab4
r7 : 00000028 r6 : 000aeaa8 r5 : 00903064 r4 : 00903164
r3 : 00000000 r2 : 000000ff r1 : 00903164 r0 : 00000000
Flags: nZCv IRQs on FIQs on Mode USER_32 ISA ARM Segment user
Control: 10c5387d Table: 4db9004a DAC: 00000055
cpu: 1 PID: 715 Comm: syslogd Tainted: G O 4.4.192+prod #1
Hardware name: TESTBOARD (Device Tree)
Backtrace:
[<80015584>] (dump_backtrace) from [<800157cc>] (show_stack+0x20/0x24)
r7:00000000 r6:200f0193 r5:00000000 r4:80a28da8
[<800157ac>] (show_stack) from [<8030ac20>] (dump_stack+0xdc/0x110)
[<8030ab44>] (dump_stack) from [<80011564>] (show_regs+0x1c/0x20)
r9:f4000100 r8:00000000 r7:8008cde4 r6:809ce380 r5:bd811fb0 r4:00000001
[<80011548>] (show_regs) from [<8030ed30>] (nmi_cpu_backtrace+0x8c/0xd0)
[<8030eca4>] (nmi_cpu_backtrace) from [<80018234>] (handle_IPI+0xd4/0x2e8)
r7:00000001 r6:809d05b8 r5:bd811fb0 r4:0000000f
[<80018160>] (handle_IPI) from [<80009560>] (gic_handle_irq+0xa8/0xc4)
r10:809d7300 r9:f4000100 r8:80a291e0 r7:bd811fb0 r6:000003ff r5:000003eb
r4:f400010c r3:00000000
[<800094b8>] (gic_handle_irq) from [<8060e738>] (__irq_usr+0x58/0x80)
Exception stack(0xbd811fb0 to 0xbd811ff8)
1fa0: 00000000 00903164 000000ff 00000000
1fc0: 00903164 00903064 000aeaa8 00000028 000aeab4 00000028 0090308c 00903008
1fe0: 00000000 7ea97bc8 0004c8e8 00013f18 600f0010 ffffffff
r10:0090308c r9:00000028 r8:10c5387d r7:10c5387d r6:ffffffff r5:600f0010
r4:00013f18
INFO: rcu_sched self-detected stall on cpu
0-...: (2589 ticks this GP) idle=215/140000000000001/0 softirq=428249/428250 fqs=2599
INFO: rcu_sched detected stalls on cpus/tasks:
0-...: (2589 ticks this GP) idle=215/140000000000001/0 softirq=428249/428250 fqs=2599
(detected by 1,t=2602 jiffies,g=227151,c=227150,q=10076)
Task dump for cpu 0:
Wq#2(System) R running 3752 830 789 0x00000002
Backtrace:
Backtrace aborted due to bad frame pointer <bdb07f6c>
(t=2605 jiffies g=227151 c=227150 q=10077)
Task dump for cpu 0:
Wq#2(System) R running 3752 830 789 0x00000002
Backtrace:
[<80015584>] (dump_backtrace) from [<800157cc>] (show_stack+0x20/0x24)
r7:809e7480 r6:00000315 r5:bc380000 r4:00000ea8
[<800157ac>] (show_stack) from [<8005e188>] (sched_show_task+0x144/0x258)
[<8005e044>] (sched_show_task) from [<80060b4c>] (dump_cpu_task+0x3c/0x4c)
r7:809e7480 r6:80030193 r5:809e7480 r4:00000000
[<80060b10>] (dump_cpu_task) from [<80098cf4>] (rcu_dump_cpu_stacks+0x94/0xd8)
r5:809e7480 r4:00000000
[<80098c60>] (rcu_dump_cpu_stacks) from [<8009d514>] (rcu_check_callbacks+0x5f8/0x910)
r9:bf6584c0 r8:809e7480 r7:809d66c4 r6:3ec86000 r5:809d663c r4:809d24c0
[<8009cf1c>] (rcu_check_callbacks) from [<800a1e64>] (update_process_times+0x48/0x74)
r10:800b5654 r9:809d6640 r8:bf654c40 r7:00000410 r6:00000000 r5:bc380000
r4:ffffe000
[<800a1e1c>] (update_process_times) from [<800b5650>] (tick_sched_handle+0x58/0x5c)
r7:00000410 r6:b7d25ecb r5:bdb07db0 r4:bf654eb8
[<800b55f8>] (tick_sched_handle) from [<800b56a8>] (tick_sched_timer+0x54/0x9c)
[<800b5654>] (tick_sched_timer) from [<800a30ec>] (__hrtimer_run_queues+0x158/0x414)
r7:806139a4 r6:00000000 r5:bdb06000 r4:bf654eb8
[<800a2f94>] (__hrtimer_run_queues) from [<800a3634>] (hrtimer_interrupt+0xb8/0x200)
r10:bf654cf8 r9:bf654d18 r8:bf654c90 r7:bf654d38 r6:ffffffff r5:00000003
r4:bf654c40
[<800a357c>] (hrtimer_interrupt) from [<80019280>] (twd_handler+0x3c/0x50)
r10:80a2920c r9:80a5077c r8:809d6640 r7:00000010 r6:bf65ac00 r5:bf08b400
r4:00000001
[<80019244>] (twd_handler) from [<800926dc>] (handle_percpu_devid_irq+0xd0/0x250)
r5:bf08b400 r4:bf031f00
[<8009260c>] (handle_percpu_devid_irq) from [<8008daf8>] (generic_handle_irq+0x30/0x44)
r10:809d7300 r9:f4000100 r8:bf034000 r7:00000001 r6:00000000 r5:00000010
r4:809d05b8
[<8008dac8>] (generic_handle_irq) from [<8008de38>] (__handle_domain_irq+0x60/0xc8)
[<8008ddd8>] (__handle_domain_irq) from [<80009518>] (gic_handle_irq+0x60/0xc4)
r9:f4000100 r8:80a291e0 r7:bdb07db0 r6:000003ff r5:000003eb r4:f400010c
[<800094b8>] (gic_handle_irq) from [<8060e3b8>] (__irq_svc+0x58/0x78)
Exception stack(0xbdb07db0 to 0xbdb07df8)
7da0: 00000000 00000000 00000621 00000622
7dc0: bf1f7f04 00000001 002dc6c0 00000000 002dc6c0 00000000 80a28d90 bdb07e2c
7de0: 00000000 bdb07e00 8030ef8c 80087e10 20030013 ffffffff
r10:80a28d90 r9:00000000 r8:002dc6c0 r7:bdb07de4 r6:ffffffff r5:20030013
r4:80087e10
[<80087ce0>] (do_raw_spin_lock) from [<8060d3fc>] (_raw_spin_lock+0x6c/0x80)
r10:bf1f7f00 r9:bdb06000 r8:bf1f7f04 r7:00000001 r6:bf1f7f04 r5:800b75e8
r4:bf1f7f14 r3:00000000
[<8060d390>] (_raw_spin_lock) from [<800b75e8>] (futex_wake+0x90/0x168)
r6:ffffffff r5:00000000 r4:bdb07e64
[<800b7558>] (futex_wake) from [<800b950c>] (do_futex+0x128/0xca0)
r10:74f00010 r9:bdb06000 r8:80010b04 r7:74f00010 r6:00000000 r5:00000001
r4:00000001
[<800b93e4>] (do_futex) from [<800ba10c>] (SyS_futex+0x88/0x188)
r10:00000000 r9:bdb06000 r8:80010b04 r7:74f00010 r6:00000081 r5:00000000
r4:00000001
[<800ba084>] (SyS_futex) from [<80010940>] (ret_fast_syscall+0x0/0x1c)
r10:00000000 r9:bdb06000 r8:80010b04 r7:000000f0 r6:769ccd1a r5:000000dc
r4:74f00010
INFO: rcu_sched self-detected stall on cpu
0-...: (10362 ticks this GP) idle=215/140000000000001/0 softirq=428249/428250 fqs=10363
INFO: rcu_sched detected stalls on cpus/tasks:
0-...: (10362 ticks this GP) idle=215/140000000000001/0 softirq=428249/428250 fqs=10363
(detected by 1,t=10407 jiffies,q=34147)
Task dump for cpu 0:
Wq#2(System) R running 3752 830 789 0x00000002
Backtrace:
Backtrace aborted due to bad frame pointer <bdb07f6c>
(t=10410 jiffies g=227151 c=227150 q=34147)
Task dump for cpu 0:
Wq#2(System) R running 3752 830 789 0x00000002
Backtrace:
[<80015584>] (dump_backtrace) from [<800157cc>] (show_stack+0x20/0x24)
r7:809e7480 r6:00000315 r5:bc380000 r4:00000ea8
[<800157ac>] (show_stack) from [<8005e188>] (sched_show_task+0x144/0x258)
[<8005e044>] (sched_show_task) from [<80060b4c>] (dump_cpu_task+0x3c/0x4c)
r7:809e7480 r6:80030193 r5:809e7480 r4:00000000
[<80060b10>] (dump_cpu_task) from [<80098cf4>] (rcu_dump_cpu_stacks+0x94/0xd8)
r5:809e7480 r4:00000000
[<80098c60>] (rcu_dump_cpu_stacks) from [<8009d514>] (rcu_check_callbacks+0x5f8/0x910)
r9:bf6584c0 r8:809e7480 r7:809d66c4 r6:3ec86000 r5:809d663c r4:809d24c0
[<8009cf1c>] (rcu_check_callbacks) from [<800a1e64>] (update_process_times+0x48/0x74)
r10:800b5654 r9:809d6640 r8:bf654c40 r7:00000422 r6:00000000 r5:bc380000
r4:ffffe000
[<800a1e1c>] (update_process_times) from [<800b5650>] (tick_sched_handle+0x58/0x5c)
r7:00000422 r6:e3f6e70d r5:bdb07db0 r4:bf654eb8
[<800b55f8>] (tick_sched_handle) from [<800b56a8>] (tick_sched_timer+0x54/0x9c)
[<800b5654>] (tick_sched_timer) from [<800a30ec>] (__hrtimer_run_queues+0x158/0x414)
r7:806139a4 r6:00000000 r5:bdb06000 r4:bf654eb8
[<800a2f94>] (__hrtimer_run_queues) from [<800a3634>] (hrtimer_interrupt+0xb8/0x200)
r10:bf654cf8 r9:bf654d18 r8:bf654c90 r7:bf654d38 r6:ffffffff r5:00000003
r4:bf654c40
[<800a357c>] (hrtimer_interrupt) from [<80019280>] (twd_handler+0x3c/0x50)
r10:80a2920c r9:80a5077c r8:809d6640 r7:00000010 r6:bf65ac00 r5:bf08b400
r4:00000001
[<80019244>] (twd_handler) from [<800926dc>] (handle_percpu_devid_irq+0xd0/0x250)
r5:bf08b400 r4:bf031f00
[<8009260c>] (handle_percpu_devid_irq) from [<8008daf8>] (generic_handle_irq+0x30/0x44)
r10:809d7300 r9:f4000100 r8:bf034000 r7:00000001 r6:00000000 r5:00000010
r4:809d05b8
[<8008dac8>] (generic_handle_irq) from [<8008de38>] (__handle_domain_irq+0x60/0xc8)
[<8008ddd8>] (__handle_domain_irq) from [<80009518>] (gic_handle_irq+0x60/0xc4)
r9:f4000100 r8:80a291e0 r7:bdb07db0 r6:000003ff r5:000003eb r4:f400010c
[<800094b8>] (gic_handle_irq) from [<8060e3b8>] (__irq_svc+0x58/0x78)
Exception stack(0xbdb07db0 to 0xbdb07df8)
7da0: 00000000 00000000 00000621 00000622
7dc0: bf1f7f04 00000001 002dc6c0 00000000 002dc6c0 00000000 80a28d90 bdb07e2c
7de0: 00000000 bdb07e00 8030ef8c 80087e10 20030013 ffffffff
r10:80a28d90 r9:00000000 r8:002dc6c0 r7:bdb07de4 r6:ffffffff r5:20030013
r4:80087e10
[<80087ce0>] (do_raw_spin_lock) from [<8060d3fc>] (_raw_spin_lock+0x6c/0x80)
r10:bf1f7f00 r9:bdb06000 r8:bf1f7f04 r7:00000001 r6:bf1f7f04 r5:800b75e8
r4:bf1f7f14 r3:00000000
[<8060d390>] (_raw_spin_lock) from [<800b75e8>] (futex_wake+0x90/0x168)
r6:ffffffff r5:00000000 r4:bdb07e64
[<800b7558>] (futex_wake) from [<800b950c>] (do_futex+0x128/0xca0)
r10:74f00010 r9:bdb06000 r8:80010b04 r7:74f00010 r6:00000000 r5:00000001
r4:00000001
[<800b93e4>] (do_futex) from [<800ba10c>] (SyS_futex+0x88/0x188)
r10:00000000 r9:bdb06000 r8:80010b04 r7:74f00010 r6:00000081 r5:00000000
r4:00000001
[<800ba084>] (SyS_futex) from [<80010940>] (ret_fast_syscall+0x0/0x1c)
r10:00000000 r9:bdb06000 r8:80010b04 r7:000000f0 r6:769ccd1a r5:000000dc
r4:74f00010
INFO: rcu_sched self-detected stall on cpu
0-...: (18135 ticks this GP) idle=215/140000000000001/0 softirq=428249/428250 fqs=18133
INFO: rcu_sched detected stalls on cpus/tasks:
0-...: (18135 ticks this GP) idle=215/140000000000001/0 softirq=428249/428250 fqs=18133
(detected by 1,t=18212 jiffies,q=34510)
Task dump for cpu 0:
Wq#2(System) R running 3752 830 789 0x00000002
Backtrace:
Backtrace aborted due to bad frame pointer <bdb07f6c>
(t=18215 jiffies g=227151 c=227150 q=34510)
Task dump for cpu 0:
Wq#2(System) R running 3752 830 789 0x00000002
Backtrace:
[<80015584>] (dump_backtrace) from [<800157cc>] (show_stack+0x20/0x24)
r7:809e7480 r6:00000315 r5:bc380000 r4:00000ea8
[<800157ac>] (show_stack) from [<8005e188>] (sched_show_task+0x144/0x258)
[<8005e044>] (sched_show_task) from [<80060b4c>] (dump_cpu_task+0x3c/0x4c)
r7:809e7480 r6:80030193 r5:809e7480 r4:00000000
[<80060b10>] (dump_cpu_task) from [<80098cf4>] (rcu_dump_cpu_stacks+0x94/0xd8)
r5:809e7480 r4:00000000
[<80098c60>] (rcu_dump_cpu_stacks) from [<8009d514>] (rcu_check_callbacks+0x5f8/0x910)
r9:bf6584c0 r8:809e7480 r7:809d66c4 r6:3ec86000 r5:809d663c r4:809d24c0
[<8009cf1c>] (rcu_check_callbacks) from [<800a1e64>] (update_process_times+0x48/0x74)
r10:800b5654 r9:809d6640 r8:bf654c40 r7:00000435 r6:00000000 r5:bc380000
r4:ffffe000
[<800a1e1c>] (update_process_times) from [<800b5650>] (tick_sched_handle+0x58/0x5c)
r7:00000435 r6:101b53f6 r5:bdb07db0 r4:bf654eb8
[<800b55f8>] (tick_sched_handle) from [<800b56a8>] (tick_sched_timer+0x54/0x9c)
[<800b5654>] (tick_sched_timer) from [<800a30ec>] (__hrtimer_run_queues+0x158/0x414)
r7:806139a4 r6:00000000 r5:bdb06000 r4:bf654eb8
[<800a2f94>] (__hrtimer_run_queues) from [<800a3634>] (hrtimer_interrupt+0xb8/0x200)
r10:bf654cf8 r9:bf654d18 r8:bf654c90 r7:bf654d38 r6:ffffffff r5:00000003
r4:bf654c40
[<800a357c>] (hrtimer_interrupt) from [<80019280>] (twd_handler+0x3c/0x50)
r10:80a2920c r9:80a5077c r8:809d6640 r7:00000010 r6:bf65ac00 r5:bf08b400
r4:00000001
[<80019244>] (twd_handler) from [<800926dc>] (handle_percpu_devid_irq+0xd0/0x250)
r5:bf08b400 r4:bf031f00
[<8009260c>] (handle_percpu_devid_irq) from [<8008daf8>] (generic_handle_irq+0x30/0x44)
r10:809d7300 r9:f4000100 r8:bf034000 r7:00000001 r6:00000000 r5:00000010
r4:809d05b8
[<8008dac8>] (generic_handle_irq) from [<8008de38>] (__handle_domain_irq+0x60/0xc8)
[<8008ddd8>] (__handle_domain_irq) from [<80009518>] (gic_handle_irq+0x60/0xc4)
r9:f4000100 r8:80a291e0 r7:bdb07db0 r6:000003ff r5:000003eb r4:f400010c
[<800094b8>] (gic_handle_irq) from [<8060e3b8>] (__irq_svc+0x58/0x78)
Exception stack(0xbdb07db0 to 0xbdb07df8)
7da0: 00000000 00000000 00000621 00000622
7dc0: bf1f7f04 00000001 002dc6c0 00000000 002dc6c0 00000000 80a28d90 bdb07e2c
7de0: 00000000 bdb07e00 8030ef8c 80087e10 20030013 ffffffff
r10:80a28d90 r9:00000000 r8:002dc6c0 r7:bdb07de4 r6:ffffffff r5:20030013
r4:80087e10
[<80087ce0>] (do_raw_spin_lock) from [<8060d3fc>] (_raw_spin_lock+0x6c/0x80)
r10:bf1f7f00 r9:bdb06000 r8:bf1f7f04 r7:00000001 r6:bf1f7f04 r5:800b75e8
r4:bf1f7f14 r3:00000000
[<8060d390>] (_raw_spin_lock) from [<800b75e8>] (futex_wake+0x90/0x168)
r6:ffffffff r5:00000000 r4:bdb07e64
[<800b7558>] (futex_wake) from [<800b950c>] (do_futex+0x128/0xca0)
r10:74f00010 r9:bdb06000 r8:80010b04 r7:74f00010 r6:00000000 r5:00000001
r4:00000001
[<800b93e4>] (do_futex) from [<800ba10c>] (SyS_futex+0x88/0x188)
r10:00000000 r9:bdb06000 r8:80010b04 r7:74f00010 r6:00000081 r5:00000000
r4:00000001
[<800ba084>] (SyS_futex) from [<80010940>] (ret_fast_syscall+0x0/0x1c)
r10:00000000 r9:bdb06000 r8:80010b04 r7:000000f0 r6:769ccd1a r5:000000dc
r4:74f00010
kworker/dying (1194) used greatest stack depth: 3720 bytes left
INFO: rcu_sched self-detected stall on cpu
0-...: (25908 ticks this GP) idle=215/140000000000001/0 softirq=428249/428250 fqs=25895
INFO: rcu_sched detected stalls on cpus/tasks:
0-...: (25908 ticks this GP) idle=215/140000000000001/0 softirq=428249/428250 fqs=25895
(detected by 1,t=26017 jiffies,q=34899)
Task dump for cpu 0:
Wq#2(System) R running 3752 830 789 0x00000002
Backtrace:
Backtrace aborted due to bad frame pointer <bdb07f6c>
(t=26020 jiffies g=227151 c=227150 q=34899)
Task dump for cpu 0:
Wq#2(System) R running 3752 830 789 0x00000002
Backtrace:
[<80015584>] (dump_backtrace) from [<800157cc>] (show_stack+0x20/0x24)
r7:809e7480 r6:00000315 r5:bc380000 r4:00000ea8
[<800157ac>] (show_stack) from [<8005e188>] (sched_show_task+0x144/0x258)
[<8005e044>] (sched_show_task) from [<80060b4c>] (dump_cpu_task+0x3c/0x4c)
r7:809e7480 r6:80030193 r5:809e7480 r4:00000000
[<80060b10>] (dump_cpu_task) from [<80098cf4>] (rcu_dump_cpu_stacks+0x94/0xd8)
r5:809e7480 r4:00000000
[<80098c60>] (rcu_dump_cpu_stacks) from [<8009d514>] (rcu_check_callbacks+0x5f8/0x910)
r9:bf6584c0 r8:809e7480 r7:809d66c4 r6:3ec86000 r5:809d663c r4:809d24c0
[<8009cf1c>] (rcu_check_callbacks) from [<800a1e64>] (update_process_times+0x48/0x74)
r10:800b5654 r9:809d6640 r8:bf654c40 r7:00000447 r6:00000000 r5:bc380000
r4:ffffe000
[<800a1e1c>] (update_process_times) from [<800b5650>] (tick_sched_handle+0x58/0x5c)
r7:00000447 r6:3c3fd07f r5:bdb07db0 r4:bf654eb8
[<800b55f8>] (tick_sched_handle) from [<800b56a8>] (tick_sched_timer+0x54/0x9c)
[<800b5654>] (tick_sched_timer) from [<800a30ec>] (__hrtimer_run_queues+0x158/0x414)
r7:806139a4 r6:00000000 r5:bdb06000 r4:bf654eb8
[<800a2f94>] (__hrtimer_run_queues) from [<800a3634>] (hrtimer_interrupt+0xb8/0x200)
r10:bf654cf8 r9:bf654d18 r8:bf654c90 r7:bf654d38 r6:ffffffff r5:00000003
r4:bf654c40
[<800a357c>] (hrtimer_interrupt) from [<80019280>] (twd_handler+0x3c/0x50)
r10:80a2920c r9:80a5077c r8:809d6640 r7:00000010 r6:bf65ac00 r5:bf08b400
r4:00000001
[<80019244>] (twd_handler) from [<800926dc>] (handle_percpu_devid_irq+0xd0/0x250)
r5:bf08b400 r4:bf031f00
[<8009260c>] (handle_percpu_devid_irq) from [<8008daf8>] (generic_handle_irq+0x30/0x44)
r10:809d7300 r9:f4000100 r8:bf034000 r7:00000001 r6:00000000 r5:00000010
r4:809d05b8
[<8008dac8>] (generic_handle_irq) from [<8008de38>] (__handle_domain_irq+0x60/0xc8)
[<8008ddd8>] (__handle_domain_irq) from [<80009518>] (gic_handle_irq+0x60/0xc4)
r9:f4000100 r8:80a291e0 r7:bdb07db0 r6:000003ff r5:000003eb r4:f400010c
[<800094b8>] (gic_handle_irq) from [<8060e3b8>] (__irq_svc+0x58/0x78)
Exception stack(0xbdb07db0 to 0xbdb07df8)
7da0: 00000000 00000000 00000621 00000622
7dc0: bf1f7f04 00000001 002dc6c0 00000000 002dc6c0 00000000 80a28d90 bdb07e2c
7de0: 00000000 bdb07e00 8030ef8c 80087e10 20030013 ffffffff
r10:80a28d90 r9:00000000 r8:002dc6c0 r7:bdb07de4 r6:ffffffff r5:20030013
r4:80087e10
[<80087ce0>] (do_raw_spin_lock) from [<8060d3fc>] (_raw_spin_lock+0x6c/0x80)
r10:bf1f7f00 r9:bdb06000 r8:bf1f7f04 r7:00000001 r6:bf1f7f04 r5:800b75e8
r4:bf1f7f14 r3:00000000
[<8060d390>] (_raw_spin_lock) from [<800b75e8>] (futex_wake+0x90/0x168)
r6:ffffffff r5:00000000 r4:bdb07e64
[<800b7558>] (futex_wake) from [<800b950c>] (do_futex+0x128/0xca0)
r10:74f00010 r9:bdb06000 r8:80010b04 r7:74f00010 r6:00000000 r5:00000001
r4:00000001
[<800b93e4>] (do_futex) from [<800ba10c>] (SyS_futex+0x88/0x188)
r10:00000000 r9:bdb06000 r8:80010b04 r7:74f00010 r6:00000081 r5:00000000
r4:00000001
[<800ba084>] (SyS_futex) from [<80010940>] (ret_fast_syscall+0x0/0x1c)
r10:00000000 r9:bdb06000 r8:80010b04 r7:000000f0 r6:769ccd1a r5:000000dc
r4:74f00010
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