[info] Using makefile-style concurrent boot in runlevel 2. [ 24.023617] audit: type=1800 audit(1540604408.520:21): pid=5395 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 24.050940] audit: type=1800 audit(1540604408.530:22): pid=5395 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2447 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.41' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 636.185475] INFO: task syz-executor205:6055 blocked for more than 140 seconds. [ 636.193051] Not tainted 4.19.0+ #305 [ 636.197715] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 636.206050] syz-executor205 D23160 6055 5553 0x00000004 [ 636.211724] Call Trace: [ 636.214377] __schedule+0x8cf/0x21d0 [ 636.221286] ? __sched_text_start+0x8/0x8 [ 636.225770] ? zap_class+0x640/0x640 [ 636.229519] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 636.234626] ? print_usage_bug+0xc0/0xc0 [ 636.239072] schedule+0xfe/0x460 [ 636.242447] ? __schedule+0x21d0/0x21d0 [ 636.246638] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 636.251236] ? trace_hardirqs_on+0xbd/0x310 [ 636.255865] ? kasan_check_read+0x11/0x20 [ 636.260009] ? rwsem_down_read_failed+0x342/0x710 [ 636.264839] ? trace_hardirqs_off_caller+0x310/0x310 [ 636.270291] ? trace_hardirqs_off_caller+0x310/0x310 [ 636.275781] rwsem_down_read_failed+0x371/0x710 [ 636.280457] ? rwsem_down_write_failed_killable+0x10/0x10 [ 636.286306] ? kzfree+0x28/0x30 [ 636.289630] ? blkg_prfill_rwstat_field_recursive+0x170/0x170 [ 636.295760] ? lock_acquire+0x1ed/0x520 [ 636.299813] ? __do_page_fault+0xbc9/0xe60 [ 636.304156] ? lock_release+0xa00/0xa00 [ 636.308410] ? perf_trace_sched_process_exec+0x860/0x860 [ 636.313868] ? kasan_check_read+0x11/0x20 [ 636.318268] ? do_raw_spin_unlock+0xa7/0x330 [ 636.322798] call_rwsem_down_read_failed+0x18/0x30 [ 636.328074] down_read+0x9b/0x120 [ 636.331533] ? __do_page_fault+0xbc9/0xe60 [ 636.336055] ? __down_interruptible+0x700/0x700 [ 636.340768] ? __close_fd+0x24c/0x3a0 [ 636.344577] ? clock_was_set_work+0x30/0x30 [ 636.349266] __do_page_fault+0xbc9/0xe60 [ 636.353326] ? trace_hardirqs_off+0xb8/0x310 [ 636.357972] ? exit_to_usermode_loop+0x1f4/0x380 [ 636.362907] do_page_fault+0xf2/0x7e0 [ 636.366931] ? vmalloc_sync_all+0x30/0x30 [ 636.371081] ? error_entry+0x70/0xd0 [ 636.374781] ? trace_hardirqs_off_caller+0xbb/0x310 [ 636.380038] ? trace_hardirqs_on_caller+0xc0/0x310 [ 636.384970] ? syscall_return_slowpath+0x5e0/0x5e0 [ 636.390196] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 636.395035] ? trace_hardirqs_on_caller+0x310/0x310 [ 636.400237] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 636.405950] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 636.410965] ? prepare_exit_to_usermode+0x291/0x3b0 [ 636.416202] ? page_fault+0x8/0x30 [ 636.419740] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 636.424572] ? page_fault+0x8/0x30 [ 636.428314] page_fault+0x1e/0x30 [ 636.431760] RIP: 0033:0x4ab5dd [ 636.434953] Code: Bad RIP value. [ 636.438554] RSP: 002b:00007ffca1e8c430 EFLAGS: 00010202 [ 636.443908] RAX: 00000000004ab700 RBX: 0000000000000001 RCX: 00000000006e0350 [ 636.451441] RDX: 00000000004073b0 RSI: 0000000000000000 RDI: 00000000004cc9d0 [ 636.458976] RBP: 00007ffca1e8c450 R08: 000000037ffffa00 R09: 000000037ffffa00 [ 636.466482] R10: 00007ffca1e8c4c0 R11: 0000000000000000 R12: 0000000000000001 [ 636.473752] R13: 00000000006e0340 R14: 0000000000000008 R15: 00000000006dbd4c [ 636.481369] INFO: task syz-executor205:6056 blocked for more than 140 seconds. [ 636.489030] Not tainted 4.19.0+ #305 [ 636.493260] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 636.501469] syz-executor205 D23400 6056 5553 0x80000004 [ 636.507335] Call Trace: [ 636.509926] __schedule+0x8cf/0x21d0 [ 636.513840] ? __sched_text_start+0x8/0x8 [ 636.518252] ? zap_class+0x640/0x640 [ 636.521971] ? print_usage_bug+0xc0/0xc0 [ 636.526323] ? mark_held_locks+0x130/0x130 [ 636.530572] schedule+0xfe/0x460 [ 636.534011] ? __schedule+0x21d0/0x21d0 [ 636.538259] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 636.542844] ? trace_hardirqs_on+0xbd/0x310 [ 636.547449] ? kasan_check_read+0x11/0x20 [ 636.551655] ? rwsem_down_read_failed+0x342/0x710 [ 636.556873] ? trace_hardirqs_off_caller+0x310/0x310 [ 636.561987] ? zap_class+0x640/0x640 [ 636.565928] rwsem_down_read_failed+0x371/0x710 [ 636.570595] ? rwsem_down_write_failed_killable+0x10/0x10 [ 636.576407] ? find_held_lock+0x36/0x1c0 [ 636.580475] ? __might_fault+0x12b/0x1e0 [ 636.584527] ? lock_acquire+0x1ed/0x520 [ 636.589115] ? do_exit+0x59c/0x26d0 [ 636.592753] ? lock_release+0xa00/0xa00 [ 636.596943] ? perf_trace_sched_process_exec+0x860/0x860 [ 636.602452] call_rwsem_down_read_failed+0x18/0x30 [ 636.607750] down_read+0x9b/0x120 [ 636.611200] ? do_exit+0x59c/0x26d0 [ 636.614810] ? __down_interruptible+0x700/0x700 [ 636.619736] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 636.625569] ? sync_mm_rss+0x9a/0x1c0 [ 636.629376] do_exit+0x59c/0x26d0 [ 636.632821] ? do_raw_spin_unlock+0xa0/0x330 [ 636.637562] ? mm_update_next_owner+0x990/0x990 [ 636.642233] ? print_usage_bug+0xc0/0xc0 [ 636.646549] ? zap_class+0x640/0x640 [ 636.650259] ? find_held_lock+0x36/0x1c0 [ 636.654309] ? __lock_acquire+0x62f/0x4c20 [ 636.658798] ? lock_downgrade+0x900/0x900 [ 636.662949] ? mark_held_locks+0x130/0x130 [ 636.667521] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 636.672773] ? drop_futex_key_refs.isra.14+0x6d/0xe0 [ 636.678119] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 636.683652] ? futex_wait+0x5ec/0xa50 [ 636.687715] ? futex_wait_setup+0x3e0/0x3e0 [ 636.692052] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 636.697476] ? drop_futex_key_refs.isra.14+0x6d/0xe0 [ 636.702579] ? futex_wake+0x304/0x760 [ 636.706617] ? zap_class+0x640/0x640 [ 636.710419] ? memset+0x31/0x40 [ 636.713704] ? find_held_lock+0x36/0x1c0 [ 636.718090] ? get_signal+0x95b/0x1980 [ 636.721981] ? _raw_spin_unlock_irq+0x27/0x80 [ 636.726696] ? _raw_spin_unlock_irq+0x27/0x80 [ 636.731199] do_group_exit+0x177/0x440 [ 636.735083] ? trace_hardirqs_off_caller+0x310/0x310 [ 636.740478] ? __ia32_sys_exit+0x50/0x50 [ 636.744538] get_signal+0x8b0/0x1980 [ 636.748499] ? ptrace_notify+0x130/0x130 [ 636.752614] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 636.758424] ? refcount_inc_not_zero_checked+0x1e5/0x2f0 [ 636.763884] ? refcount_add_not_zero_checked+0x330/0x330 [ 636.769669] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 636.774704] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 636.780597] do_signal+0x9c/0x21c0 [ 636.784144] ? setup_sigcontext+0x7d0/0x7d0 [ 636.788709] ? cap_mmap_addr+0x130/0x130 [ 636.792768] ? exit_to_usermode_loop+0x8c/0x380 [ 636.797740] ? exit_to_usermode_loop+0x8c/0x380 [ 636.802409] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 636.807332] ? trace_hardirqs_on+0xbd/0x310 [ 636.811705] ? cap_capable+0x1f9/0x260 [ 636.815881] ? do_syscall_64+0x6be/0x820 [ 636.819992] ? __x64_sys_futex+0x47f/0x6a0 [ 636.824230] exit_to_usermode_loop+0x2e5/0x380 [ 636.829051] ? __bpf_trace_sys_exit+0x30/0x30 [ 636.833589] ? __sys_setresuid+0x6f3/0x820 [ 636.838024] do_syscall_64+0x6be/0x820 [ 636.841917] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 636.847522] ? syscall_return_slowpath+0x5e0/0x5e0 [ 636.852450] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 636.857542] ? trace_hardirqs_on_caller+0x310/0x310 [ 636.862560] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 636.867862] ? prepare_exit_to_usermode+0x291/0x3b0 [ 636.872882] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 636.877958] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 636.883150] RIP: 0033:0x446569 [ 636.886582] Code: 63 65 20 69 73 20 65 6d 70 74 79 2c 20 79 6f 75 20 6d 61 79 20 77 61 6e 74 20 74 6f 20 2e 2f 63 6f 6e 66 69 67 75 72 65 20 2d <2d> 65 6e 61 62 6c 65 2d 72 74 69 6e 73 74 0a 00 00 00 00 00 00 00 [ 636.905986] RSP: 002b:00007f87a3816db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 636.913692] RAX: fffffffffffffe00 RBX: 00000000006dbc48 RCX: 0000000000446569 [ 636.921305] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000006dbc48 [ 636.928975] RBP: 00000000006dbc40 R08: 0000000000000000 R09: 0000000000000000 [ 636.936572] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc4c [ 636.943844] R13: 00007ffca1e8c42f R14: 00007f87a38179c0 R15: 00000000006dbd4c [ 636.951389] INFO: task syz-executor205:6057 blocked for more than 140 seconds. [ 636.958917] Not tainted 4.19.0+ #305 [ 636.963243] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 636.971410] syz-executor205 D23472 6057 5553 0x80000004 [ 636.977275] Call Trace: [ 636.979870] __schedule+0x8cf/0x21d0 [ 636.983586] ? __sched_text_start+0x8/0x8 [ 636.988132] ? zap_class+0x640/0x640 [ 636.991850] ? print_usage_bug+0xc0/0xc0 [ 636.996160] ? mark_held_locks+0x130/0x130 [ 637.000409] schedule+0xfe/0x460 [ 637.003820] ? __schedule+0x21d0/0x21d0 [ 637.008109] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 637.012700] ? trace_hardirqs_on+0xbd/0x310 [ 637.017293] ? kasan_check_read+0x11/0x20 [ 637.021446] ? rwsem_down_read_failed+0x342/0x710 [ 637.026660] ? trace_hardirqs_off_caller+0x310/0x310 [ 637.031762] ? zap_class+0x640/0x640 [ 637.035713] rwsem_down_read_failed+0x371/0x710 [ 637.040377] ? rwsem_down_write_failed_killable+0x10/0x10 [ 637.046295] ? find_held_lock+0x36/0x1c0 [ 637.050365] ? __might_fault+0x12b/0x1e0 [ 637.054420] ? lock_acquire+0x1ed/0x520 [ 637.058709] ? do_exit+0x59c/0x26d0 [ 637.062389] ? lock_release+0xa00/0xa00 [ 637.066659] ? perf_trace_sched_process_exec+0x860/0x860 [ 637.072164] call_rwsem_down_read_failed+0x18/0x30 [ 637.077365] down_read+0x9b/0x120 [ 637.080823] ? do_exit+0x59c/0x26d0 [ 637.084445] ? __down_interruptible+0x700/0x700 [ 637.089536] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 637.095082] ? sync_mm_rss+0x9a/0x1c0 [ 637.099178] do_exit+0x59c/0x26d0 [ 637.102633] ? do_raw_spin_unlock+0xa0/0x330 [ 637.107273] ? mm_update_next_owner+0x990/0x990 [ 637.112094] ? print_usage_bug+0xc0/0xc0 [ 637.116428] ? zap_class+0x640/0x640 [ 637.120152] ? find_held_lock+0x36/0x1c0 [ 637.124275] ? __lock_acquire+0x62f/0x4c20 [ 637.129001] ? lock_downgrade+0x900/0x900 [ 637.133263] ? mark_held_locks+0x130/0x130 [ 637.137862] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 637.143098] ? drop_futex_key_refs.isra.14+0x6d/0xe0 [ 637.148510] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 637.154047] ? futex_wait+0x5ec/0xa50 [ 637.158081] ? futex_wait_setup+0x3e0/0x3e0 [ 637.162411] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 637.167963] ? drop_futex_key_refs.isra.14+0x6d/0xe0 [ 637.173073] ? futex_wake+0x304/0x760 [ 637.177178] ? zap_class+0x640/0x640 [ 637.180897] ? memset+0x31/0x40 [ 637.184165] ? find_held_lock+0x36/0x1c0 [ 637.188674] ? get_signal+0x95b/0x1980 [ 637.192728] ? _raw_spin_unlock_irq+0x27/0x80 [ 637.197543] ? _raw_spin_unlock_irq+0x27/0x80 [ 637.202105] do_group_exit+0x177/0x440 [ 637.206350] ? trace_hardirqs_off_caller+0x310/0x310 [ 637.211471] ? __ia32_sys_exit+0x50/0x50 [ 637.215870] get_signal+0x8b0/0x1980 [ 637.219586] ? ptrace_notify+0x130/0x130 [ 637.223689] ? ksys_dup3+0x680/0x680 [ 637.227764] do_signal+0x9c/0x21c0 [ 637.231365] ? perf_ioctl+0x6d/0x80 [ 637.234993] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 637.240948] ? do_vfs_ioctl+0x201/0x1720 [ 637.245007] ? __perf_event_task_sched_in+0x2a9/0xb60 [ 637.250725] ? setup_sigcontext+0x7d0/0x7d0 [ 637.255050] ? ioctl_preallocate+0x300/0x300 [ 637.259756] ? exit_to_usermode_loop+0x8c/0x380 [ 637.264424] ? exit_to_usermode_loop+0x8c/0x380 [ 637.269624] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 637.274229] ? trace_hardirqs_on+0xbd/0x310 [ 637.279233] ? do_syscall_64+0x6be/0x820 [ 637.283296] ? __x64_sys_futex+0x47f/0x6a0 [ 637.287853] exit_to_usermode_loop+0x2e5/0x380 [ 637.292438] ? __bpf_trace_sys_exit+0x30/0x30 [ 637.297314] ? ksys_ioctl+0x81/0xd0 [ 637.300947] do_syscall_64+0x6be/0x820 [ 637.304827] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 637.310612] ? syscall_return_slowpath+0x5e0/0x5e0 [ 637.315803] ? trace_hardirqs_on_caller+0x310/0x310 [ 637.320833] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 637.326202] ? post_copy_siginfo_from_user.isra.25.part.26+0x250/0x250 [ 637.332883] ? __switch_to_asm+0x40/0x70 [ 637.337383] ? __switch_to_asm+0x34/0x70 [ 637.341463] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 637.346675] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 637.351870] RIP: 0033:0x446569 [ 637.355055] Code: 63 65 20 69 73 20 65 6d 70 74 79 2c 20 79 6f 75 20 6d 61 79 20 77 61 6e 74 20 74 6f 20 2e 2f 63 6f 6e 66 69 67 75 72 65 20 2d <2d> 65 6e 61 62 6c 65 2d 72 74 69 6e 73 74 0a 00 00 00 00 00 00 00 [ 637.374475] RSP: 002b:00007f87a37f5db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 637.382732] RAX: fffffffffffffe00 RBX: 00000000006dbc58 RCX: 0000000000446569 [ 637.390282] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000006dbc58 [ 637.397829] RBP: 00000000006dbc50 R08: 0000000000000000 R09: 0000000000000000 [ 637.405096] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc5c [ 637.412811] R13: 00007ffca1e8c42f R14: 00007f87a37f69c0 R15: 00000000006dbd4c [ 637.420345] [ 637.420345] Showing all locks held in the system: [ 637.426942] 1 lock held by khungtaskd/982: [ 637.431169] #0: 00000000e0c8a8db (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 [ 637.440155] 1 lock held by rsyslogd/5435: [ 637.444398] #0: 00000000ee510fc3 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 [ 637.452763] 2 locks held by getty/5524: [ 637.457029] #0: 00000000b18219ba (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 637.465559] #1: 00000000e928934c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 637.474493] 2 locks held by getty/5525: [ 637.478931] #0: 00000000ce9d6079 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 637.487539] #1: 0000000068a16aca (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 637.496892] 2 locks held by getty/5526: [ 637.500858] #0: 000000000b6866d7 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 637.509513] #1: 00000000ce6b67e3 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 637.518843] 2 locks held by getty/5527: [ 637.522826] #0: 0000000006bc72d2 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 637.531544] #1: 000000002c168a08 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 637.540771] 2 locks held by getty/5528: [ 637.544757] #0: 00000000742fb152 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 637.553449] #1: 000000009e613494 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 637.564775] 2 locks held by getty/5529: [ 637.569040] #0: 00000000e329a2dd (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 637.577620] #1: 00000000f42b8a57 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 637.586817] 2 locks held by getty/5530: [ 637.590797] #0: 00000000fd0bdf9a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 637.599405] #1: 00000000eb800afa (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 637.608639] 1 lock held by syz-executor205/6055: [ 637.613397] #0: 000000009e6e5bbd (&mm->mmap_sem){++++}, at: __do_page_fault+0xbc9/0xe60 [ 637.622162] 1 lock held by syz-executor205/6056: [ 637.627247] #0: 000000009e6e5bbd (&mm->mmap_sem){++++}, at: do_exit+0x59c/0x26d0 [ 637.634916] 1 lock held by syz-executor205/6057: [ 637.640077] #0: 000000009e6e5bbd (&mm->mmap_sem){++++}, at: do_exit+0x59c/0x26d0 [ 637.648083] 2 locks held by syz-executor205/6058: [ 637.652934] [ 637.654559] ============================================= [ 637.654559] [ 637.662331] NMI backtrace for cpu 0 [ 637.666027] CPU: 0 PID: 982 Comm: khungtaskd Not tainted 4.19.0+ #305 [ 637.672606] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 637.681956] Call Trace: [ 637.684641] dump_stack+0x244/0x39d [ 637.688285] ? dump_stack_print_info.cold.1+0x20/0x20 [ 637.693486] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 637.699037] nmi_cpu_backtrace.cold.1+0x5c/0xa1 [ 637.703784] ? lapic_can_unplug_cpu.cold.26+0x3f/0x3f [ 637.709002] nmi_trigger_cpumask_backtrace+0x1b3/0x1ed [ 637.714297] arch_trigger_cpumask_backtrace+0x14/0x20 [ 637.719496] watchdog+0xb3e/0x1050 [ 637.723058] ? reset_hung_task_detector+0xd0/0xd0 [ 637.727966] ? __kthread_parkme+0xce/0x1a0 [ 637.732222] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 637.737334] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 637.742451] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 637.747047] ? trace_hardirqs_on+0xbd/0x310 [ 637.751377] ? kasan_check_read+0x11/0x20 [ 637.755535] ? __kthread_parkme+0xce/0x1a0 [ 637.759779] ? trace_hardirqs_off_caller+0x310/0x310 [ 637.764893] ? trace_hardirqs_off_caller+0x310/0x310 [ 637.770007] ? lockdep_init_map+0x9/0x10 [ 637.774084] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 637.779192] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 637.784743] ? __kthread_parkme+0xfb/0x1a0 [ 637.788991] kthread+0x35a/0x420 [ 637.792364] ? reset_hung_task_detector+0xd0/0xd0 [ 637.797212] ? kthread_stop+0x900/0x900 [ 637.801205] ret_from_fork+0x3a/0x50 [ 637.805018] Sending NMI from CPU 0 to CPUs 1: [ 637.811380] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.657 msecs [ 637.811566] NMI backtrace for cpu 1 [ 637.811573] CPU: 1 PID: 6058 Comm: syz-executor205 Not tainted 4.19.0+ #305 [ 637.811581] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 637.811586] RIP: 0010:__lock_acquire+0x2b8/0x4c20 [ 637.811600] Code: ff 1f 00 00 39 de 75 0f 48 83 bc 24 90 00 00 00 00 0f 85 12 09 00 00 48 8b 84 24 80 00 00 00 89 de 66 81 e6 ff 1f 4e 8d 3c 10 <49> 8d 47 20 48 89 c2 48 89 44 24 70 48 b8 00 00 00 00 00 fc ff df [ 637.811605] RSP: 0018:ffff8801d7fdec90 EFLAGS: 00000006 [ 637.811615] RAX: ffff8801d77a8a80 RBX: 00000000000004e2 RCX: 0000000000000000 [ 637.811621] RDX: 0000000000000001 RSI: 00000000000004e2 RDI: ffff8801d77a8aa0 [ 637.811628] RBP: ffff8801d7fdf018 R08: 0000000000000001 R09: 0000000000000000 [ 637.811634] R10: 0000000000000028 R11: ffff8801d77a8200 R12: 0000000000000001 [ 637.811641] R13: ffff8801d74bd790 R14: 0000000000000000 R15: ffff8801d77a8aa8 [ 637.811648] FS: 00007f87a37d5700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 637.811654] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 637.811660] CR2: ffffffffff600400 CR3: 00000001d84b3000 CR4: 00000000001406e0 [ 637.811667] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 637.811673] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 637.811677] Call Trace: [ 637.811681] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 637.811686] ? trace_hardirqs_on+0xbd/0x310 [ 637.811690] ? kasan_check_read+0x11/0x20 [ 637.811695] ? finish_task_switch+0x1f4/0x910 [ 637.811700] ? mark_held_locks+0x130/0x130 [ 637.811709] ? kasan_check_write+0x14/0x20 [ 637.811714] ? finish_task_switch+0x2f4/0x910 [ 637.811719] ? __switch_to_asm+0x40/0x70 [ 637.811724] ? preempt_notifier_register+0x200/0x200 [ 637.811728] ? __switch_to_asm+0x34/0x70 [ 637.811733] ? __switch_to_asm+0x34/0x70 [ 637.811737] ? print_usage_bug+0xc0/0xc0 [ 637.811742] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 637.811747] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 637.811751] ? retint_kernel+0x2d/0x2d [ 637.811756] ? trace_hardirqs_on_caller+0xc0/0x310 [ 637.811761] ? trace_hardirqs_on_caller+0xc0/0x310 [ 637.811766] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 637.811772] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 637.811777] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 637.811781] ? zap_class+0x640/0x640 [ 637.811786] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 637.811791] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 637.811795] ? retint_kernel+0x2d/0x2d [ 637.811800] ? trace_hardirqs_on_caller+0xc0/0x310 [ 637.811804] ? retint_kernel+0x2d/0x2d [ 637.811809] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 637.811813] lock_acquire+0x1ed/0x520 [ 637.811818] ? perf_mmap+0x86b/0x1cb0 [ 637.811822] ? lock_release+0xa00/0xa00 [ 637.811827] ? perf_trace_sched_process_exec+0x860/0x860 [ 637.811832] ? retint_kernel+0x2d/0x2d [ 637.811836] ? perf_mmap+0x86b/0x1cb0 [ 637.811840] __mutex_lock+0x166/0x16f0 [ 637.811844] ? perf_mmap+0x86b/0x1cb0 [ 637.811848] ? perf_mmap+0x86b/0x1cb0 [ 637.811853] ? retint_kernel+0x2d/0x2d [ 637.811858] ? trace_hardirqs_on_caller+0xc0/0x310 [ 637.811863] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 637.811867] ? mutex_trylock+0x2b0/0x2b0 [ 637.811872] ? find_held_lock+0x36/0x1c0 [ 637.811876] ? perf_mmap+0x858/0x1cb0 [ 637.811880] ? lock_downgrade+0x900/0x900 [ 637.811885] ? retint_kernel+0x2d/0x2d [ 637.811889] ? check_memory_region+0x117/0x1b0 [ 637.811894] ? kasan_check_write+0x14/0x20 [ 637.811899] ? __mutex_unlock_slowpath+0x197/0x8c0 [ 637.811904] ? wait_for_completion+0x8a0/0x8a0 [ 637.811908] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 637.811913] ? retint_kernel+0x2d/0x2d [ 637.811917] ? perf_mmap+0x86b/0x1cb0 [ 637.811921] mutex_lock_nested+0x16/0x20 [ 637.811926] ? mutex_lock_nested+0x16/0x20 [ 637.811930] perf_mmap+0x86b/0x1cb0 [ 637.811934] ? perf_release+0x50/0x50 [ 637.811938] ? find_held_lock+0x36/0x1c0 [ 637.811943] ? zap_class+0x640/0x640 [ 637.811948] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 637.811953] ? check_preemption_disabled+0x48/0x280 [ 637.811957] ? __lock_is_held+0xb5/0x140 [ 637.811962] ? rcu_read_lock_sched_held+0x14f/0x180 [ 637.811967] ? kmem_cache_alloc+0x33a/0x730 [ 637.811971] ? memset+0x31/0x40 [ 637.811975] ? vm_area_alloc+0x15a/0x1d0 [ 637.811980] ? arch_release_thread_stack+0x10/0x10 [ 637.811984] ? do_munmap+0x8a1/0xf50 [ 637.811988] mmap_region+0xe82/0x1cd0 [ 637.811993] ? __x64_sys_brk+0x7d0/0x7d0 [ 637.811997] ? zap_class+0x640/0x640 [ 637.812002] ? exit_robust_list+0x280/0x280 [ 637.812007] ? mpx_unmapped_area_check+0xd8/0x108 [ 637.812011] ? arch_get_unmapped_area+0x750/0x750 [ 637.812016] ? lock_acquire+0x1ed/0x520 [ 637.812021] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 637.812025] ? cap_mmap_addr+0x52/0x130 [ 637.812031] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 637.812035] ? security_mmap_addr+0x80/0xa0 [ 637.812041] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 637.812045] ? get_unmapped_area+0x292/0x3b0 [ 637.812049] do_mmap+0xa22/0x1230 [ 637.812054] ? mmap_region+0x1cd0/0x1cd0 [ 637.812058] ? vm_mmap_pgoff+0x1b5/0x2c0 [ 637.812063] ? down_read_killable+0x150/0x150 [ 637.812067] ? security_mmap_file+0x174/0x1b0 [ 637.812072] vm_mmap_pgoff+0x213/0x2c0 [ 637.812076] ? vma_is_stack_for_current+0xd0/0xd0 [ 637.812080] ? fput+0x130/0x1a0 [ 637.812085] ksys_mmap_pgoff+0x4da/0x660 [ 637.812089] ? do_syscall_64+0x9a/0x820 [ 637.812094] ? find_mergeable_anon_vma+0xd0/0xd0 [ 637.812099] ? trace_hardirqs_on+0xbd/0x310 [ 637.812104] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 637.812109] ? trace_hardirqs_off_caller+0x310/0x310 [ 637.812114] __x64_sys_mmap+0xe9/0x1b0 [ 637.812118] do_syscall_64+0x1b9/0x820 [ 637.812123] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 637.812128] ? syscall_return_slowpath+0x5e0/0x5e0 [ 637.812133] ? trace_hardirqs_on_caller+0x310/0x310 [ 637.812138] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 637.812144] ? post_copy_siginfo_from_user.isra.25.part.26+0x250/0x250 [ 637.812149] ? __switch_to_asm+0x40/0x70 [ 637.812153] ? __switch_to_asm+0x34/0x70 [ 637.812158] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 637.812163] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 637.812167] RIP: 0033:0x446569 [ 637.812180] Code: e8 2c b3 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 637.812185] RSP: 002b:00007f87a37d4da8 EFLAGS: 00000216 ORIG_RAX: 0000000000000009 [ 637.812196] RAX: ffffffffffffffda RBX: 00000000006dbc68 RCX: 0000000000446569 [ 637.812203] RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020ffd000 [ 637.812209] RBP: 00000000006dbc60 R08: 0000000000000003 R09: 0000000000000000 [ 637.812215] R10: 0000000000000011 R11: 0000000000000216 R12: 00000000006dbc6c [ 637.812221] R13: 00007ffca1e8c42f R14: 00007f87a37d59c0 R15: 00000000006dbd4c [ 637.819221] Kernel panic - not syncing: hung_task: blocked tasks [ 638.472339] CPU: 0 PID: 982 Comm: khungtaskd Not tainted 4.19.0+ #305 [ 638.478922] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 638.488304] Call Trace: [ 638.490903] dump_stack+0x244/0x39d [ 638.494539] ? dump_stack_print_info.cold.1+0x20/0x20 [ 638.499753] panic+0x238/0x4e7 [ 638.502953] ? add_taint.cold.5+0x16/0x16 [ 638.507119] ? nmi_trigger_cpumask_backtrace+0x16a/0x1ed [ 638.512581] ? nmi_trigger_cpumask_backtrace+0x1c4/0x1ed [ 638.518034] ? nmi_trigger_cpumask_backtrace+0x173/0x1ed [ 638.523490] ? nmi_trigger_cpumask_backtrace+0x16a/0x1ed [ 638.528994] watchdog+0xb4f/0x1050 [ 638.532562] ? reset_hung_task_detector+0xd0/0xd0 [ 638.537416] ? __kthread_parkme+0xce/0x1a0 [ 638.541668] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 638.546775] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 638.551888] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 638.556488] ? trace_hardirqs_on+0xbd/0x310 [ 638.560814] ? kasan_check_read+0x11/0x20 [ 638.564972] ? __kthread_parkme+0xce/0x1a0 [ 638.569212] ? trace_hardirqs_off_caller+0x310/0x310 [ 638.574329] ? trace_hardirqs_off_caller+0x310/0x310 [ 638.579446] ? lockdep_init_map+0x9/0x10 [ 638.583522] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 638.588631] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 638.594176] ? __kthread_parkme+0xfb/0x1a0 [ 638.598420] kthread+0x35a/0x420 [ 638.601808] ? reset_hung_task_detector+0xd0/0xd0 [ 638.606657] ? kthread_stop+0x900/0x900 [ 638.610639] ret_from_fork+0x3a/0x50 [ 638.615524] Kernel Offset: disabled [ 638.619154] Rebooting in 86400 seconds..