[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.68' (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 syzkaller login: [ 715.721623][ T1646] INFO: task syz-executor050:8462 blocked for more than 143 seconds. [ 715.730130][ T1646] Not tainted 5.14.0-rc5-syzkaller #0 [ 715.736503][ T1646] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 715.745541][ T1646] task:syz-executor050 state:D stack:29784 pid: 8462 ppid: 1 flags:0x00000000 [ 715.754844][ T1646] Call Trace: [ 715.758125][ T1646] __schedule+0x93a/0x26f0 [ 715.762655][ T1646] ? io_schedule_timeout+0x140/0x140 [ 715.767947][ T1646] schedule+0xd3/0x270 [ 715.772046][ T1646] schedule_preempt_disabled+0xf/0x20 [ 715.777664][ T1646] __mutex_lock+0x7b6/0x10a0 [ 715.782322][ T1646] ? __x64_sys_acct+0xa3/0x1f0 [ 715.787090][ T1646] ? mutex_lock_io_nested+0xf00/0xf00 [ 715.792486][ T1646] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 715.798724][ T1646] ? strncpy_from_user+0x2a0/0x3e0 [ 715.804086][ T1646] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 715.810509][ T1646] ? getname_flags.part.0+0x1dd/0x4f0 [ 715.816126][ T1646] __x64_sys_acct+0xa3/0x1f0 [ 715.820724][ T1646] do_syscall_64+0x35/0xb0 [ 715.825217][ T1646] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 715.831109][ T1646] RIP: 0033:0x445779 [ 715.835029][ T1646] RSP: 002b:00007f219fbcd308 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3 [ 715.843520][ T1646] RAX: ffffffffffffffda RBX: 00000000004ca408 RCX: 0000000000445779 [ 715.851816][ T1646] RDX: 0000000000445779 RSI: 0000000000000000 RDI: 00000000200001c0 [ 715.859792][ T1646] RBP: 00000000004ca400 R08: 0000000000000000 R09: 0000000000000000 [ 715.868242][ T1646] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004ca40c [ 715.876293][ T1646] R13: 000000000049a074 R14: 0030656c69662f2e R15: 0000000000022000 [ 715.884624][ T1646] INFO: task syz-executor050:8465 blocked for more than 143 seconds. [ 715.892786][ T1646] Not tainted 5.14.0-rc5-syzkaller #0 [ 715.898858][ T1646] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 715.907556][ T1646] task:syz-executor050 state:D stack:29784 pid: 8465 ppid: 1 flags:0x00000000 [ 715.916802][ T1646] Call Trace: [ 715.920075][ T1646] __schedule+0x93a/0x26f0 [ 715.924531][ T1646] ? io_schedule_timeout+0x140/0x140 [ 715.929821][ T1646] schedule+0xd3/0x270 [ 715.934135][ T1646] schedule_preempt_disabled+0xf/0x20 [ 715.939516][ T1646] __mutex_lock+0x7b6/0x10a0 [ 715.944135][ T1646] ? __x64_sys_acct+0xa3/0x1f0 [ 715.948906][ T1646] ? mutex_lock_io_nested+0xf00/0xf00 [ 715.954303][ T1646] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 715.960540][ T1646] ? strncpy_from_user+0x2a0/0x3e0 [ 715.966215][ T1646] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 715.972722][ T1646] ? getname_flags.part.0+0x1dd/0x4f0 [ 715.978132][ T1646] __x64_sys_acct+0xa3/0x1f0 [ 715.982775][ T1646] do_syscall_64+0x35/0xb0 [ 715.987390][ T1646] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 715.993566][ T1646] RIP: 0033:0x445779 [ 715.997453][ T1646] RSP: 002b:00007f219fbcd308 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3 [ 716.006464][ T1646] RAX: ffffffffffffffda RBX: 00000000004ca408 RCX: 0000000000445779 [ 716.014990][ T1646] RDX: 0000000000445779 RSI: 0000000000000000 RDI: 00000000200001c0 [ 716.023368][ T1646] RBP: 00000000004ca400 R08: 0000000000000000 R09: 0000000000000000 [ 716.031425][ T1646] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004ca40c [ 716.039441][ T1646] R13: 000000000049a074 R14: 0030656c69662f2e R15: 0000000000022000 [ 716.047485][ T1646] INFO: task syz-executor050:8468 blocked for more than 143 seconds. [ 716.055772][ T1646] Not tainted 5.14.0-rc5-syzkaller #0 [ 716.061692][ T1646] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 716.070349][ T1646] task:syz-executor050 state:D stack:29904 pid: 8468 ppid: 1 flags:0x00000000 [ 716.079986][ T1646] Call Trace: [ 716.083319][ T1646] __schedule+0x93a/0x26f0 [ 716.087907][ T1646] ? io_schedule_timeout+0x140/0x140 [ 716.093257][ T1646] schedule+0xd3/0x270 [ 716.097340][ T1646] schedule_preempt_disabled+0xf/0x20 [ 716.102759][ T1646] __mutex_lock+0x7b6/0x10a0 [ 716.107350][ T1646] ? __x64_sys_acct+0xa3/0x1f0 [ 716.112150][ T1646] ? mutex_lock_io_nested+0xf00/0xf00 [ 716.117527][ T1646] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 716.123888][ T1646] ? strncpy_from_user+0x2a0/0x3e0 [ 716.129007][ T1646] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 716.135898][ T1646] ? getname_flags.part.0+0x1dd/0x4f0 [ 716.141285][ T1646] __x64_sys_acct+0xa3/0x1f0 [ 716.146467][ T1646] do_syscall_64+0x35/0xb0 [ 716.150892][ T1646] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 716.157010][ T1646] RIP: 0033:0x445779 [ 716.160901][ T1646] RSP: 002b:00007f219fbcd308 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3 [ 716.169593][ T1646] RAX: ffffffffffffffda RBX: 00000000004ca408 RCX: 0000000000445779 [ 716.177805][ T1646] RDX: 0000000000445779 RSI: 00000000000f4240 RDI: 00000000200001c0 [ 716.186155][ T1646] RBP: 00000000004ca400 R08: 0000000000000000 R09: 0000000000000000 [ 716.194184][ T1646] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004ca40c [ 716.202197][ T1646] R13: 000000000049a074 R14: 0030656c69662f2e R15: 0000000000022000 [ 716.210198][ T1646] INFO: task syz-executor050:8470 blocked for more than 143 seconds. [ 716.218412][ T1646] Not tainted 5.14.0-rc5-syzkaller #0 [ 716.224351][ T1646] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 716.233224][ T1646] task:syz-executor050 state:D stack:28280 pid: 8470 ppid: 8441 flags:0x00000004 [ 716.242477][ T1646] Call Trace: [ 716.245750][ T1646] __schedule+0x93a/0x26f0 [ 716.250288][ T1646] ? io_schedule_timeout+0x140/0x140 [ 716.255651][ T1646] schedule+0xd3/0x270 [ 716.259721][ T1646] schedule_preempt_disabled+0xf/0x20 [ 716.265804][ T1646] __mutex_lock+0x7b6/0x10a0 [ 716.270411][ T1646] ? __x64_sys_acct+0xa3/0x1f0 [ 716.275496][ T1646] ? mutex_lock_io_nested+0xf00/0xf00 [ 716.280878][ T1646] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 716.287680][ T1646] ? strncpy_from_user+0x2a0/0x3e0 [ 716.292869][ T1646] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 716.299117][ T1646] ? getname_flags.part.0+0x1dd/0x4f0 [ 716.304634][ T1646] __x64_sys_acct+0xa3/0x1f0 [ 716.309229][ T1646] do_syscall_64+0x35/0xb0 [ 716.313690][ T1646] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 716.319581][ T1646] RIP: 0033:0x445779 [ 716.323500][ T1646] RSP: 002b:00007f219fbcd308 EFLAGS: 00000246 ORIG_RAX: 00000000000000a3 [ 716.331955][ T1646] RAX: ffffffffffffffda RBX: 00000000004ca408 RCX: 0000000000445779 [ 716.339921][ T1646] RDX: 0000000000445779 RSI: 0000000000000000 RDI: 00000000200001c0 [ 716.347920][ T1646] RBP: 00000000004ca400 R08: 0000000000000000 R09: 0000000000000000 [ 716.355947][ T1646] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004ca40c [ 716.364127][ T1646] R13: 000000000049a074 R14: 0030656c69662f2e R15: 0000000000022000 [ 716.372246][ T1646] [ 716.372246][ T1646] Showing all locks held in the system: [ 716.379947][ T1646] 1 lock held by khungtaskd/1646: [ 716.384996][ T1646] #0: ffffffff8b97c1c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 716.395060][ T1646] 1 lock held by in:imklog/8353: [ 716.400226][ T1646] #0: ffff888018f6e0f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 [ 716.409747][ T1646] 1 lock held by syz-executor050/8459: [ 716.415256][ T1646] #0: ffffffff8b9b4088 (acct_on_mutex){+.+.}-{3:3}, at: __x64_sys_acct+0xa3/0x1f0 [ 716.424624][ T1646] 1 lock held by syz-executor050/8462: [ 716.430090][ T1646] #0: ffffffff8b9b4088 (acct_on_mutex){+.+.}-{3:3}, at: __x64_sys_acct+0xa3/0x1f0 [ 716.439425][ T1646] 1 lock held by syz-executor050/8465: [ 716.445044][ T1646] #0: ffffffff8b9b4088 (acct_on_mutex){+.+.}-{3:3}, at: __x64_sys_acct+0xa3/0x1f0 [ 716.454382][ T1646] 1 lock held by syz-executor050/8468: [ 716.460267][ T1646] #0: ffffffff8b9b4088 (acct_on_mutex){+.+.}-{3:3}, at: __x64_sys_acct+0xa3/0x1f0 [ 716.469806][ T1646] 1 lock held by syz-executor050/8470: [ 716.475307][ T1646] #0: ffffffff8b9b4088 (acct_on_mutex){+.+.}-{3:3}, at: __x64_sys_acct+0xa3/0x1f0 [ 716.484691][ T1646] [ 716.487011][ T1646] ============================================= [ 716.487011][ T1646] [ 716.495540][ T1646] NMI backtrace for cpu 0 [ 716.499861][ T1646] CPU: 0 PID: 1646 Comm: khungtaskd Not tainted 5.14.0-rc5-syzkaller #0 [ 716.508193][ T1646] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.518330][ T1646] Call Trace: [ 716.521598][ T1646] dump_stack_lvl+0xcd/0x134 [ 716.526185][ T1646] nmi_cpu_backtrace.cold+0x44/0xd7 [ 716.531371][ T1646] ? lapic_can_unplug_cpu+0x80/0x80 [ 716.536561][ T1646] nmi_trigger_cpumask_backtrace+0x1b3/0x230 [ 716.542535][ T1646] watchdog+0xd0a/0xfc0 [ 716.546682][ T1646] ? reset_hung_task_detector+0x30/0x30 [ 716.552216][ T1646] kthread+0x3e5/0x4d0 [ 716.556360][ T1646] ? set_kthread_struct+0x130/0x130 [ 716.561548][ T1646] ret_from_fork+0x1f/0x30 [ 716.566089][ T1646] Sending NMI from CPU 0 to CPUs 1: [ 716.571351][ C1] NMI backtrace for cpu 1 skipped: idling at acpi_idle_do_entry+0x1c6/0x250 [ 716.572966][ T1646] Kernel panic - not syncing: hung_task: blocked tasks [ 716.587282][ T1646] CPU: 0 PID: 1646 Comm: khungtaskd Not tainted 5.14.0-rc5-syzkaller #0 [ 716.595586][ T1646] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.605620][ T1646] Call Trace: [ 716.608902][ T1646] dump_stack_lvl+0xcd/0x134 [ 716.613494][ T1646] panic+0x306/0x73d [ 716.617367][ T1646] ? __warn_printk+0xf3/0xf3 [ 716.622572][ T1646] ? lapic_can_unplug_cpu+0x80/0x80 [ 716.627752][ T1646] ? preempt_schedule_thunk+0x16/0x18 [ 716.633103][ T1646] ? nmi_trigger_cpumask_backtrace+0x196/0x230 [ 716.639417][ T1646] ? watchdog.cold+0x5/0x158 [ 716.644283][ T1646] watchdog.cold+0x16/0x158 [ 716.648770][ T1646] ? reset_hung_task_detector+0x30/0x30 [ 716.654296][ T1646] kthread+0x3e5/0x4d0 [ 716.658346][ T1646] ? set_kthread_struct+0x130/0x130 [ 716.663524][ T1646] ret_from_fork+0x1f/0x30 [ 716.674218][ T1646] Kernel Offset: disabled [ 716.678530][ T1646] Rebooting in 86400 seconds..