INFO: task syz-executor3:7953 blocked for more than 140 seconds.
Not tainted 4.20.0-rc2+ #338
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor3 D24048 7953 6057 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2831 [inline]
__schedule+0x8cf/0x21d0 kernel/sched/core.c:3472
schedule+0xfe/0x460 kernel/sched/core.c:3516
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3574
__mutex_lock_common kernel/locking/mutex.c:1002 [inline]
__mutex_lock+0xaff/0x16f0 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
snd_seq_ioctl+0x221/0x440 sound/core/seq/seq_clientmgr.c:2137
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:509 [inline]
do_vfs_ioctl+0x1de/0x1790 fs/ioctl.c:696
ksys_ioctl+0xa9/0xd0 fs/ioctl.c:713
__do_sys_ioctl fs/ioctl.c:720 [inline]
__se_sys_ioctl fs/ioctl.c:718 [inline]
__x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457569
Code: Bad RIP value.
RSP: 002b:00007f726467dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569
RDX: 00000000200005c0 RSI: 0000000080045300 RDI: 0000000000000004
RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f726467e6d4
R13: 00000000004c9100 R14: 00000000004d19f8 R15: 00000000ffffffff
INFO: task syz-executor3:7962 blocked for more than 140 seconds.
Not tainted 4.20.0-rc2+ #338
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor3 D24216 7962 6057 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2831 [inline]
__schedule+0x8cf/0x21d0 kernel/sched/core.c:3472
schedule+0xfe/0x460 kernel/sched/core.c:3516
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3574
__mutex_lock_common kernel/locking/mutex.c:1002 [inline]
__mutex_lock+0xaff/0x16f0 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
snd_seq_ioctl+0x221/0x440 sound/core/seq/seq_clientmgr.c:2137
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:509 [inline]
do_vfs_ioctl+0x1de/0x1790 fs/ioctl.c:696
ksys_ioctl+0xa9/0xd0 fs/ioctl.c:713
__do_sys_ioctl fs/ioctl.c:720 [inline]
__se_sys_ioctl fs/ioctl.c:718 [inline]
__x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457569
Code: Bad RIP value.
RSP: 002b:00007f726465bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569
RDX: 00000000200005c0 RSI: 0000000080045300 RDI: 000000000000000a
RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f726465c6d4
R13: 00000000004c9100 R14: 00000000004d19f8 R15: 00000000ffffffff
INFO: task syz-executor3:7991 blocked for more than 140 seconds.
Not tainted 4.20.0-rc2+ #338
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor3 D24424 7991 6057 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2831 [inline]
__schedule+0x8cf/0x21d0 kernel/sched/core.c:3472
schedule+0xfe/0x460 kernel/sched/core.c:3516
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3574
__mutex_lock_common kernel/locking/mutex.c:1002 [inline]
__mutex_lock+0xaff/0x16f0 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
snd_seq_ioctl+0x221/0x440 sound/core/seq/seq_clientmgr.c:2137
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:509 [inline]
do_vfs_ioctl+0x1de/0x1790 fs/ioctl.c:696
ksys_ioctl+0xa9/0xd0 fs/ioctl.c:713
__do_sys_ioctl fs/ioctl.c:720 [inline]
__se_sys_ioctl fs/ioctl.c:718 [inline]
__x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457569
Code: Bad RIP value.
RSP: 002b:00007f726463ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569
RDX: 00000000200000c0 RSI: 00000000c08c5332 RDI: 000000000000000a
RBP: 000000000072c0e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f726463b6d4
R13: 00000000004c8ef8 R14: 00000000004d18c0 R15: 00000000ffffffff
INFO: task syz-executor3:7992 blocked for more than 140 seconds.
Not tainted 4.20.0-rc2+ #338
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor3 D25376 7992 6057 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2831 [inline]
__schedule+0x8cf/0x21d0 kernel/sched/core.c:3472
schedule+0xfe/0x460 kernel/sched/core.c:3516
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3574
__mutex_lock_common kernel/locking/mutex.c:1002 [inline]
__mutex_lock+0xaff/0x16f0 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
snd_seq_ioctl+0x221/0x440 sound/core/seq/seq_clientmgr.c:2137
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:509 [inline]
do_vfs_ioctl+0x1de/0x1790 fs/ioctl.c:696
ksys_ioctl+0xa9/0xd0 fs/ioctl.c:713
__do_sys_ioctl fs/ioctl.c:720 [inline]
__se_sys_ioctl fs/ioctl.c:718 [inline]
__x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457569
Code: Bad RIP value.
RSP: 002b:00007f7264619c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569
RDX: 0000000020000000 RSI: 0000000040bc5311 RDI: 000000000000000a
RBP: 000000000072c180 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f726461a6d4
R13: 00000000004c91e8 R14: 00000000004d1a88 R15: 00000000ffffffff
INFO: task syz-executor3:7993 blocked for more than 140 seconds.
Not tainted 4.20.0-rc2+ #338
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor3 D25688 7993 6057 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2831 [inline]
__schedule+0x8cf/0x21d0 kernel/sched/core.c:3472
schedule+0xfe/0x460 kernel/sched/core.c:3516
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3574
__mutex_lock_common kernel/locking/mutex.c:1002 [inline]
__mutex_lock+0xaff/0x16f0 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
snd_seq_write+0x1f1/0x8d0 sound/core/seq/seq_clientmgr.c:1021
__vfs_write+0x119/0x9f0 fs/read_write.c:485
vfs_write+0x1fc/0x560 fs/read_write.c:549
ksys_write+0x101/0x260 fs/read_write.c:598
__do_sys_write fs/read_write.c:610 [inline]
__se_sys_write fs/read_write.c:607 [inline]
__x64_sys_write+0x73/0xb0 fs/read_write.c:607
do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457569
Code: Bad RIP value.
RSP: 002b:00007f72645f8c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569
RDX: 00000000ffffffbd RSI: 0000000020042f70 RDI: 000000000000000a
RBP: 000000000072c220 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f72645f96d4
R13: 00000000004c59f4 R14: 00000000004d9768 R15: 00000000ffffffff
Showing all locks held in the system:
1 lock held by khungtaskd/1019:
#0: 0000000083ed1e64 (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 kernel/locking/lockdep.c:4379
1 lock held by rsyslogd/5866:
#0: 00000000e70aa98e (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 fs/file.c:766
2 locks held by getty/5956:
#0: 00000000567f8745 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
#1: 00000000ce193a71 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154
2 locks held by getty/5957:
#0: 00000000006b6de5 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
#1: 0000000052ff4490 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154
2 locks held by getty/5958:
#0: 00000000cf4e222c (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
#1: 000000006e9a318e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154
2 locks held by getty/5959:
#0: 00000000c49f580a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
#1: 00000000d6456317 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154
2 locks held by getty/5960:
#0: 000000005d4edd11 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
#1: 000000000531ffb2 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154
2 locks held by getty/5961:
#0: 00000000990ad02b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
#1: 00000000debd6d31 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154
2 locks held by getty/5962:
#0: 00000000f1b8e4cb (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
#1: 0000000090de6c39 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154
1 lock held by syz-executor3/7941:
1 lock held by syz-executor3/7953:
#0: 000000001bb159c7 (&client->ioctl_mutex){+.+.}, at: snd_seq_ioctl+0x221/0x440 sound/core/seq/seq_clientmgr.c:2137
1 lock held by syz-executor3/7962:
#0: 000000001bb159c7 (&client->ioctl_mutex){+.+.}, at: snd_seq_ioctl+0x221/0x440 sound/core/seq/seq_clientmgr.c:2137
1 lock held by syz-executor3/7991:
#0: 000000001bb159c7 (&client->ioctl_mutex){+.+.}, at: snd_seq_ioctl+0x221/0x440 sound/core/seq/seq_clientmgr.c:2137
1 lock held by syz-executor3/7992:
#0: 000000001bb159c7 (&client->ioctl_mutex){+.+.}, at: snd_seq_ioctl+0x221/0x440 sound/core/seq/seq_clientmgr.c:2137
1 lock held by syz-executor3/7993:
#0: 000000001bb159c7 (&client->ioctl_mutex){+.+.}, at: snd_seq_write+0x1f1/0x8d0 sound/core/seq/seq_clientmgr.c:1021
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1019 Comm: khungtaskd Not tainted 4.20.0-rc2+ #338
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x244/0x39d lib/dump_stack.c:113
nmi_cpu_backtrace.cold.2+0x5c/0xa1 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1e8/0x22a lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline]
watchdog+0xb51/0x1060 kernel/hung_task.c:289
kthread+0x35a/0x440 kernel/kthread.c:246
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 7941 Comm: syz-executor3 Not tainted 4.20.0-rc2+ #338
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__wrmsr arch/x86/include/asm/msr.h:105 [inline]
RIP: 0010:native_write_msr+0xa/0x30 arch/x86/include/asm/msr.h:162
Code: 5d c3 0f 21 c8 5d c3 0f 21 d0 5d c3 0f 21 d8 5d c3 0f 21 f0 5d c3 0f 0b 0f 1f 84 00 00 00 00 00 55 89 f9 89 f0 48 89 e5 0f 30 <0f> 1f 44 00 00 5d c3 48 c1 e2 20 89 f6 48 09 d6 31 d2 e8 5f 9a 6f
RSP: 0018:ffff8881daf07d30 EFLAGS: 00000046
RAX: 00000000000000de RBX: 0000000000000838 RCX: 0000000000000838
RDX: 0000000000000000 RSI: 00000000000000de RDI: 0000000000000838
RBP: ffff8881daf07d30 R08: ffff8881bfb8c680 R09: 0000000000000006
R10: fffffbfff14a6e09 R11: 0000000000000001 R12: 00000000000000de
R13: 0000000000000000 R14: 0000000000000000 R15: 7fffffffffffffff
FS: 00007f726469f700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000045753f CR3: 00000001d1d81000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
paravirt_write_msr arch/x86/include/asm/paravirt.h:174 [inline]
native_apic_msr_write+0x5a/0x80 arch/x86/include/asm/apic.h:209
apic_write arch/x86/include/asm/apic.h:397 [inline]
lapic_next_event+0x5a/0x90 arch/x86/kernel/apic/apic.c:466
clockevents_program_event+0x251/0x370 kernel/time/clockevents.c:344
tick_program_event+0xb7/0x130 kernel/time/tick-oneshot.c:48
hrtimer_interrupt+0x368/0x780 kernel/time/hrtimer.c:1531
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1034 [inline]
smp_apic_timer_interrupt+0x1a1/0x760 arch/x86/kernel/apic/apic.c:1059
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:804
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xaf/0xd0 kernel/locking/spinlock.c:184
Code: 70 fb 51 89 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 28 48 83 3d 38 8a 76 01 00 74 15 48 89 df 57 9d <0f> 1f 44 00 00 eb ad e8 bc 0b 25 f9 eb bb 0f 0b 0f 0b e8 ca 63 e7
RSP: 0018:ffff88817b16f548 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: dffffc0000000000 RBX: 0000000000000286 RCX: 1ffff11037f719e4
RDX: 1ffffffff12a3f6e RSI: 0000000000000000 RDI: 0000000000000286
RBP: ffff88817b16f558 R08: ffff8881bfb8cf20 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8881bfb8c680 R12: ffff8881b93458b0
R13: ffffc9001291fd9c R14: ffff8881b93459c0 R15: 0000000000000000
spin_unlock_irqrestore include/linux/spinlock.h:384 [inline]
queue_access_unlock sound/core/seq/seq_queue.c:381 [inline]
snd_seq_control_queue+0x1e8/0x680 sound/core/seq/seq_queue.c:739
event_input_timer+0x25/0x30 sound/core/seq/seq_system.c:118
snd_seq_deliver_single_event.constprop.15+0x8b0/0xa70 sound/core/seq/seq_clientmgr.c:621
snd_seq_deliver_event+0x5a4/0x950 sound/core/seq/seq_clientmgr.c:822
snd_seq_dispatch_event+0x129/0x660 sound/core/seq/seq_clientmgr.c:896
snd_seq_check_queue.part.4+0x139/0x360 sound/core/seq/seq_queue.c:275
snd_seq_check_queue sound/core/seq/seq_queue.c:255 [inline]
snd_seq_enqueue_event+0x346/0x4d0 sound/core/seq/seq_queue.c:343
snd_seq_client_enqueue_event+0x2a5/0x510 sound/core/seq/seq_clientmgr.c:957
snd_seq_write+0x3f1/0x8d0 sound/core/seq/seq_clientmgr.c:1074
__vfs_write+0x119/0x9f0 fs/read_write.c:485
vfs_write+0x1fc/0x560 fs/read_write.c:549
ksys_write+0x101/0x260 fs/read_write.c:598
__do_sys_write fs/read_write.c:610 [inline]
__se_sys_write fs/read_write.c:607 [inline]
__x64_sys_write+0x73/0xb0 fs/read_write.c:607
do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457569
Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f726469ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569
RDX: 00000000ffffffbd RSI: 0000000020042f70 RDI: 0000000000000004
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f726469f6d4
R13: 00000000004c59f4 R14: 00000000004d9768 R15: 00000000ffffffff