INFO: task syz-executor.0:16925 blocked for more than 143 seconds. Not tainted 5.0.0+ #17 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28408 16925 16606 0x00000000 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 __do_sys_acct kernel/acct.c:285 [inline] __se_sys_acct kernel/acct.c:273 [inline] __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457f29 Code: Bad RIP value. RSP: 002b:00007fd656596c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000457f29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd6565976d4 R13: 00000000004bde45 R14: 00000000004ce290 R15: 00000000ffffffff INFO: task syz-executor.0:16958 blocked for more than 143 seconds. Not tainted 5.0.0+ #17 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D29440 16958 16606 0x00000000 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 __do_sys_acct kernel/acct.c:285 [inline] __se_sys_acct kernel/acct.c:273 [inline] __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457f29 Code: Bad RIP value. RSP: 002b:00007fd656596c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000457f29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd6565976d4 R13: 00000000004bde45 R14: 00000000004ce290 R15: 00000000ffffffff INFO: task syz-executor.0:16990 blocked for more than 143 seconds. Not tainted 5.0.0+ #17 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D29440 16990 16606 0x00000000 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 __do_sys_acct kernel/acct.c:285 [inline] __se_sys_acct kernel/acct.c:273 [inline] __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457f29 Code: Bad RIP value. RSP: 002b:00007fd656596c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000457f29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd6565976d4 R13: 00000000004bde45 R14: 00000000004ce290 R15: 00000000ffffffff INFO: task syz-executor.0:17031 blocked for more than 143 seconds. Not tainted 5.0.0+ #17 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D29440 17031 16606 0x00000000 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 __do_sys_acct kernel/acct.c:285 [inline] __se_sys_acct kernel/acct.c:273 [inline] __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457f29 Code: cc 48 8b 42 08 48 8b 4c 24 08 48 39 c1 0f 84 87 00 00 00 8b 81 90 00 00 00 83 f8 06 0f 95 c0 84 c0 74 73 48 8b 81 28 01 00 00 <48> 8b 0d a0 cc 24 01 48 39 c1 75 0b 0f b6 0d 17 c8 24 01 84 c9 74 RSP: 002b:00007fd656596c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000457f29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd6565976d4 R13: 00000000004bde45 R14: 00000000004ce290 R15: 00000000ffffffff INFO: task syz-executor.0:17068 blocked for more than 144 seconds. Not tainted 5.0.0+ #17 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D29440 17068 16606 0x00000000 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 __do_sys_acct kernel/acct.c:285 [inline] __se_sys_acct kernel/acct.c:273 [inline] __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457f29 Code: cc 48 8b 42 08 48 8b 4c 24 08 48 39 c1 0f 84 87 00 00 00 8b 81 90 00 00 00 83 f8 06 0f 95 c0 84 c0 74 73 48 8b 81 28 01 00 00 <48> 8b 0d a0 cc 24 01 48 39 c1 75 0b 0f b6 0d 17 c8 24 01 84 c9 74 RSP: 002b:00007fd656596c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000457f29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd6565976d4 R13: 00000000004bde45 R14: 00000000004ce290 R15: 00000000ffffffff INFO: task syz-executor.0:17103 blocked for more than 144 seconds. Not tainted 5.0.0+ #17 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D29024 17103 16606 0x00000004 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 __do_sys_acct kernel/acct.c:285 [inline] __se_sys_acct kernel/acct.c:273 [inline] __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457f29 Code: cc 48 8b 42 08 48 8b 4c 24 08 48 39 c1 0f 84 87 00 00 00 8b 81 90 00 00 00 83 f8 06 0f 95 c0 84 c0 74 73 48 8b 81 28 01 00 00 <48> 8b 0d a0 cc 24 01 48 39 c1 75 0b 0f b6 0d 17 c8 24 01 84 c9 74 RSP: 002b:00007fd656596c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000457f29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd6565976d4 R13: 00000000004bde45 R14: 00000000004ce290 R15: 00000000ffffffff INFO: task syz-executor.0:17139 blocked for more than 144 seconds. Not tainted 5.0.0+ #17 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D29440 17139 16606 0x00000004 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 __do_sys_acct kernel/acct.c:285 [inline] __se_sys_acct kernel/acct.c:273 [inline] __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457f29 Code: cc 48 8b 42 08 48 8b 4c 24 08 48 39 c1 0f 84 87 00 00 00 8b 81 90 00 00 00 83 f8 06 0f 95 c0 84 c0 74 73 48 8b 81 28 01 00 00 <48> 8b 0d a0 cc 24 01 48 39 c1 75 0b 0f b6 0d 17 c8 24 01 84 c9 74 RSP: 002b:00007fd656596c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000457f29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd6565976d4 R13: 00000000004bde45 R14: 00000000004ce290 R15: 00000000ffffffff INFO: task syz-executor.0:17169 blocked for more than 144 seconds. Not tainted 5.0.0+ #17 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D29440 17169 16606 0x00000004 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 __do_sys_acct kernel/acct.c:285 [inline] __se_sys_acct kernel/acct.c:273 [inline] __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457f29 Code: cc 48 8b 42 08 48 8b 4c 24 08 48 39 c1 0f 84 87 00 00 00 8b 81 90 00 00 00 83 f8 06 0f 95 c0 84 c0 74 73 48 8b 81 28 01 00 00 <48> 8b 0d a0 cc 24 01 48 39 c1 75 0b 0f b6 0d 17 c8 24 01 84 c9 74 RSP: 002b:00007fd656596c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000457f29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd6565976d4 R13: 00000000004bde45 R14: 00000000004ce290 R15: 00000000ffffffff INFO: task syz-executor.0:17211 blocked for more than 144 seconds. Not tainted 5.0.0+ #17 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D29440 17211 16606 0x00000004 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 __do_sys_acct kernel/acct.c:285 [inline] __se_sys_acct kernel/acct.c:273 [inline] __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457f29 Code: cc 48 8b 42 08 48 8b 4c 24 08 48 39 c1 0f 84 87 00 00 00 8b 81 90 00 00 00 83 f8 06 0f 95 c0 84 c0 74 73 48 8b 81 28 01 00 00 <48> 8b 0d a0 cc 24 01 48 39 c1 75 0b 0f b6 0d 17 c8 24 01 84 c9 74 RSP: 002b:00007fd656596c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000457f29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd6565976d4 R13: 00000000004bde45 R14: 00000000004ce290 R15: 00000000ffffffff INFO: task syz-executor.0:17243 blocked for more than 145 seconds. Not tainted 5.0.0+ #17 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D29440 17243 16606 0x00000004 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 __do_sys_acct kernel/acct.c:285 [inline] __se_sys_acct kernel/acct.c:273 [inline] __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457f29 Code: cc 48 8b 42 08 48 8b 4c 24 08 48 39 c1 0f 84 87 00 00 00 8b 81 90 00 00 00 83 f8 06 0f 95 c0 84 c0 74 73 48 8b 81 28 01 00 00 <48> 8b 0d a0 cc 24 01 48 39 c1 75 0b 0f b6 0d 17 c8 24 01 84 c9 74 RSP: 002b:00007fd656596c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000457f29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd6565976d4 R13: 00000000004bde45 R14: 00000000004ce290 R15: 00000000ffffffff Showing all locks held in the system: 2 locks held by kworker/u4:3/129: #0: 00000000d2a5c911 (&rq->lock){-.-.}, at: idle_balance kernel/sched/fair.c:10011 [inline] #0: 00000000d2a5c911 (&rq->lock){-.-.}, at: pick_next_task_fair+0x1214/0x19a0 kernel/sched/fair.c:7062 #1: 000000004a8cb568 (rcu_read_lock){....}, at: __update_idle_core+0x45/0x3f0 kernel/sched/fair.c:6059 1 lock held by khungtaskd/1041: #0: 000000004a8cb568 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:5061 1 lock held by rsyslogd/7473: #0: 000000009a951ae3 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:801 2 locks held by getty/7563: #0: 000000005ad79e33 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000098c92c1 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7564: #0: 00000000fa1900b2 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000b8f8232c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7565: #0: 00000000589f6128 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000e90f7b9f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7566: #0: 000000006a630389 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000001a4af16b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7567: #0: 000000009645413a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000d4cd0219 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7568: #0: 000000007e7654ac (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000009ccadad1 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7569: #0: 00000000c4c3b434 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000b7d8a51f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 1 lock held by syz-executor.0/16887: #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __do_sys_acct kernel/acct.c:285 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __se_sys_acct kernel/acct.c:273 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 1 lock held by syz-executor.0/16925: #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __do_sys_acct kernel/acct.c:285 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __se_sys_acct kernel/acct.c:273 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 1 lock held by syz-executor.0/16958: #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __do_sys_acct kernel/acct.c:285 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __se_sys_acct kernel/acct.c:273 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 1 lock held by syz-executor.0/16990: #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __do_sys_acct kernel/acct.c:285 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __se_sys_acct kernel/acct.c:273 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 1 lock held by syz-executor.0/17031: #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __do_sys_acct kernel/acct.c:285 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __se_sys_acct kernel/acct.c:273 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 1 lock held by syz-executor.0/17068: #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __do_sys_acct kernel/acct.c:285 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __se_sys_acct kernel/acct.c:273 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 1 lock held by syz-executor.0/17103: #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __do_sys_acct kernel/acct.c:285 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __se_sys_acct kernel/acct.c:273 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 1 lock held by syz-executor.0/17139: #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __do_sys_acct kernel/acct.c:285 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __se_sys_acct kernel/acct.c:273 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 1 lock held by syz-executor.0/17169: #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __do_sys_acct kernel/acct.c:285 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __se_sys_acct kernel/acct.c:273 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 1 lock held by syz-executor.0/17211: #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __do_sys_acct kernel/acct.c:285 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __se_sys_acct kernel/acct.c:273 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 1 lock held by syz-executor.0/17243: #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __do_sys_acct kernel/acct.c:285 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __se_sys_acct kernel/acct.c:273 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 1 lock held by syz-executor.0/17277: #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __do_sys_acct kernel/acct.c:285 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __se_sys_acct kernel/acct.c:273 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 1 lock held by syz-executor.0/17312: #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __do_sys_acct kernel/acct.c:285 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __se_sys_acct kernel/acct.c:273 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 1 lock held by syz-executor.0/17352: #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __do_sys_acct kernel/acct.c:285 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __se_sys_acct kernel/acct.c:273 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 1 lock held by syz-executor.0/17388: #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __do_sys_acct kernel/acct.c:285 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __se_sys_acct kernel/acct.c:273 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 1 lock held by syz-executor.4/17675: #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __do_sys_acct kernel/acct.c:285 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __se_sys_acct kernel/acct.c:273 [inline] #0: 000000009c2394bc (acct_on_mutex){+.+.}, at: __x64_sys_acct+0xa6/0x200 kernel/acct.c:273 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1041 Comm: khungtaskd Not tainted 5.0.0+ #17 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+0x172/0x1f0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1be/0x236 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:204 [inline] watchdog+0x9b7/0xec0 kernel/hung_task.c:288 kthread+0x357/0x430 kernel/kthread.c:253 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 0 to CPUs 1: