Warning: Permanently added '10.128.0.174' (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 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 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 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: [ 717.770845] INFO: task syz-executor891:10001 blocked for more than 140 seconds. [ 717.778397] Not tainted 4.19.211-syzkaller #0 [ 717.785998] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 717.794608] syz-executor891 D28648 10001 8101 0x00000004 [ 717.800258] Call Trace: [ 717.804197] __schedule+0x887/0x2040 [ 717.807930] ? io_schedule_timeout+0x140/0x140 [ 717.813842] ? mark_held_locks+0xa6/0xf0 [ 717.817913] ? rwsem_down_read_failed+0x20a/0x390 [ 717.823870] schedule+0x8d/0x1b0 [ 717.827245] rwsem_down_read_failed+0x20a/0x390 [ 717.833043] ? rt_mutex_futex_unlock+0xf0/0xf0 [ 717.837650] call_rwsem_down_read_failed+0x14/0x30 [ 717.843687] down_read+0x44/0x80 [ 717.847063] ? __do_page_fault+0x97f/0xd60 [ 717.852447] __do_page_fault+0x97f/0xd60 [ 717.856543] ? page_fault+0x8/0x30 [ 717.860086] ? trace_hardirqs_off_caller+0x6e/0x210 [ 717.866660] ? spurious_fault+0x840/0x840 [ 717.871696] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 717.876648] ? page_fault+0x8/0x30 [ 717.880193] page_fault+0x1e/0x30 [ 717.885227] RIP: 0033:0x7fdf7e15acb0 [ 717.888951] Code: Bad RIP value. [ 717.893504] RSP: 002b:00007ffd84b35cc8 EFLAGS: 00010246 [ 717.898882] RAX: 0000000000000000 RBX: 0000000000000064 RCX: 0000000000000000 [ 717.907257] RDX: 00007ffd84b35ce0 RSI: 0000000000000000 RDI: 0000000000000000 [ 717.915320] RBP: 0000000000000032 R08: 00000087c0b11adc R09: 0000000000000001 [ 717.923307] R10: 00007ffd84b35d40 R11: 0000000000000246 R12: 00007ffd84b35d40 [ 717.930586] R13: 00007fdf7e1a141c R14: 00007ffd84b35d60 R15: 00007fdf7e0d64a0 [ 717.939053] INFO: task syz-executor891:10003 blocked for more than 140 seconds. [ 717.947191] Not tainted 4.19.211-syzkaller #0 [ 717.952902] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 717.961907] syz-executor891 D28832 10003 8101 0x80000004 [ 717.967548] Call Trace: [ 717.970138] __schedule+0x887/0x2040 [ 717.975383] ? io_schedule_timeout+0x140/0x140 [ 717.979981] ? mark_held_locks+0xa6/0xf0 [ 717.986208] ? rwsem_down_read_failed+0x20a/0x390 [ 717.991801] schedule+0x8d/0x1b0 [ 717.995178] rwsem_down_read_failed+0x20a/0x390 [ 717.999846] ? rt_mutex_futex_unlock+0xf0/0xf0 [ 718.005843] ? lock_acquire+0x170/0x3c0 [ 718.009831] ? lock_downgrade+0x720/0x720 [ 718.015083] call_rwsem_down_read_failed+0x14/0x30 [ 718.020024] down_read+0x44/0x80 [ 718.024585] ? do_exit+0x6e4/0x2be0 [ 718.028223] do_exit+0x6e4/0x2be0 [ 718.032795] ? futex_wake+0x159/0x480 [ 718.036607] ? mm_update_next_owner+0x650/0x650 [ 718.042410] ? get_signal+0x388/0x1f70 [ 718.046309] ? lock_downgrade+0x720/0x720 [ 718.050466] ? lock_acquire+0x170/0x3c0 [ 718.055953] do_group_exit+0x125/0x310 [ 718.059865] get_signal+0x3f2/0x1f70 [ 718.064638] ? __mutex_unlock_slowpath+0xea/0x610 [ 718.069497] ? wait_for_completion_io+0x10/0x10 [ 718.075291] do_signal+0x8f/0x1670 [ 718.078841] ? perf_ioctl+0x69/0x80 [ 718.083590] ? do_vfs_ioctl+0x110/0x12e0 [ 718.087662] ? setup_sigcontext+0x820/0x820 [ 718.093378] ? ioctl_preallocate+0x200/0x200 [ 718.097809] ? __fget+0x356/0x510 [ 718.102426] ? __se_sys_futex+0x28f/0x3b0 [ 718.106593] ? __se_sys_futex+0x298/0x3b0 [ 718.111910] ? do_futex+0x1880/0x1880 [ 718.115729] ? exit_to_usermode_loop+0x36/0x2a0 [ 718.120408] exit_to_usermode_loop+0x204/0x2a0 [ 718.126662] do_syscall_64+0x538/0x620 [ 718.130569] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 718.136958] RIP: 0033:0x7fdf7e119b09 [ 718.141386] Code: Bad RIP value. [ 718.144756] RSP: 002b:00007fdf7e0aa318 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 718.153604] RAX: fffffffffffffe00 RBX: 00007fdf7e1a1418 RCX: 00007fdf7e119b09 [ 718.161583] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fdf7e1a1418 [ 718.168859] RBP: 00007fdf7e1a1410 R08: 0000000000000000 R09: 0000000000000000 [ 718.178569] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fdf7e16f074 [ 718.186641] R13: 00007ffd84b35c8f R14: 00007fdf7e0aa400 R15: 0000000000022000 [ 718.194687] [ 718.194687] Showing all locks held in the system: [ 718.201724] 1 lock held by khungtaskd/1570: [ 718.206044] #0: 00000000b18d3552 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 [ 718.215787] 1 lock held by in:imklog/7805: [ 718.220025] #0: 00000000f5de7c27 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 [ 718.230100] 1 lock held by syz-executor891/10001: [ 718.235924] #0: 000000008fc2a7e0 (&mm->mmap_sem){++++}, at: __do_page_fault+0x97f/0xd60 [ 718.244937] 2 locks held by syz-executor891/10002: [ 718.249869] 1 lock held by syz-executor891/10003: [ 718.255861] #0: 000000008fc2a7e0 (&mm->mmap_sem){++++}, at: do_exit+0x6e4/0x2be0 [ 718.264268] [ 718.265895] ============================================= [ 718.265895] [ 718.274009] NMI backtrace for cpu 1 [ 718.277645] CPU: 1 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 [ 718.285083] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 718.294437] Call Trace: [ 718.297029] dump_stack+0x1fc/0x2ef [ 718.300658] nmi_cpu_backtrace.cold+0x63/0xa2 [ 718.305156] ? lapic_can_unplug_cpu+0x80/0x80 [ 718.309652] nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 [ 718.314959] watchdog+0x991/0xe60 [ 718.318420] ? reset_hung_task_detector+0x30/0x30 [ 718.323263] kthread+0x33f/0x460 [ 718.326627] ? kthread_park+0x180/0x180 [ 718.330600] ret_from_fork+0x24/0x30 [ 718.334420] Sending NMI from CPU 1 to CPUs 0: [ 718.339419] NMI backtrace for cpu 0 [ 718.339426] CPU: 0 PID: 10002 Comm: syz-executor891 Not tainted 4.19.211-syzkaller #0 [ 718.339432] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 718.339436] RIP: 0010:debug_lockdep_rcu_enabled+0x8a/0xe0 [ 718.339446] Code: d2 75 64 8b 0d 07 53 f5 08 85 c9 74 45 65 48 8b 1c 25 c0 df 01 00 48 8d bb 84 08 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa <48> c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 [ 718.339450] RSP: 0018:ffff8880aba6f950 EFLAGS: 00000002 [ 718.339458] RAX: dffffc0000000000 RBX: ffff8880abaae100 RCX: 0000000000000001 [ 718.339463] RDX: ffff8880abaae984 RSI: 0000000000000002 RDI: ffff8880abaae984 [ 718.339468] RBP: ffff8880ae19cd90 R08: 0000000000000001 R09: 0000000000000000 [ 718.339473] R10: ffff8880ae19cd37 R11: 0000000000000000 R12: 0000000000000000 [ 718.339477] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 [ 718.339483] FS: 00007fdf7e0cb700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 718.339487] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 718.339492] CR2: 0000555555baf2b8 CR3: 000000009905d000 CR4: 00000000003406f0 [ 718.339497] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 718.339502] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 718.339505] Call Trace: [ 718.339508] lock_acquire+0x2e7/0x3c0 [ 718.339511] ? perf_mmap+0x693/0x1810 [ 718.339515] __mutex_lock+0xd7/0x1190 [ 718.339518] ? perf_mmap+0x693/0x1810 [ 718.339522] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 718.339525] ? perf_mmap+0x693/0x1810 [ 718.339529] ? mutex_trylock+0x1a0/0x1a0 [ 718.339532] ? __mutex_unlock_slowpath+0xea/0x610 [ 718.339536] ? wait_for_completion_io+0x10/0x10 [ 718.339539] ? perf_mmap+0x6ee/0x1810 [ 718.339543] perf_mmap+0x693/0x1810 [ 718.339546] ? perf_release+0x40/0x40 [ 718.339550] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 718.339553] mmap_region+0xc94/0x16b0 [ 718.339557] ? vm_munmap+0x140/0x140 [ 718.339560] ? get_unmapped_area+0x294/0x3c0 [ 718.339564] do_mmap+0x8e8/0x1080 [ 718.339567] vm_mmap_pgoff+0x197/0x200 [ 718.339571] ? vma_is_stack_for_current+0xc0/0xc0 [ 718.339574] ? do_dup2+0x450/0x450 [ 718.339578] ksys_mmap_pgoff+0x298/0x5a0 [ 718.339582] ? find_mergeable_anon_vma+0x260/0x260 [ 718.339586] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 718.339590] ? trace_hardirqs_off_caller+0x6e/0x210 [ 718.339593] ? do_syscall_64+0x21/0x620 [ 718.339596] do_syscall_64+0xf9/0x620 [ 718.339600] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 718.339604] RIP: 0033:0x7fdf7e119b09 [ 718.339614] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 718.339618] RSP: 002b:00007fdf7e0cb308 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 718.339626] RAX: ffffffffffffffda RBX: 00007fdf7e1a1408 RCX: 00007fdf7e119b09 [ 718.339631] RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020ffc000 [ 718.339643] RBP: 00007fdf7e1a1400 R08: 0000000000000003 R09: 0000000000000000 [ 718.339649] R10: 0000000000000011 R11: 0000000000000246 R12: 00007fdf7e16f074 [ 718.339654] R13: 00007ffd84b35c8f R14: 00007fdf7e0cb400 R15: 0000000000022000 [ 718.365073] Kernel panic - not syncing: hung_task: blocked tasks [ 718.650926] CPU: 1 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 [ 718.658369] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 718.667717] Call Trace: [ 718.670312] dump_stack+0x1fc/0x2ef [ 718.673944] panic+0x26a/0x50e [ 718.677137] ? __warn_printk+0xf3/0xf3 [ 718.681031] ? lapic_can_unplug_cpu+0x80/0x80 [ 718.685524] ? ___preempt_schedule+0x16/0x18 [ 718.689942] ? watchdog+0x991/0xe60 [ 718.693577] ? nmi_trigger_cpumask_backtrace+0x15e/0x1f0 [ 718.699041] watchdog+0x9a2/0xe60 [ 718.702505] ? reset_hung_task_detector+0x30/0x30 [ 718.707358] kthread+0x33f/0x460 [ 718.710728] ? kthread_park+0x180/0x180 [ 718.714705] ret_from_fork+0x24/0x30 [ 718.718749] Kernel Offset: disabled [ 718.722376] Rebooting in 86400 seconds..