Warning: Permanently added '10.128.1.78' (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 syzkaller login: [ 1001.356012] INFO: task syz-executor262:8476 blocked for more than 140 seconds. [ 1001.363490] Not tainted 4.14.264-syzkaller #0 [ 1001.370590] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1001.379120] syz-executor262 D28912 8476 7983 0x00000004 [ 1001.384760] Call Trace: [ 1001.388206] __schedule+0x88b/0x1de0 [ 1001.391931] ? io_schedule_timeout+0x140/0x140 [ 1001.397443] ? mark_held_locks+0xa6/0xf0 [ 1001.401503] ? _raw_spin_unlock_irq+0x24/0x80 [ 1001.407591] ? rwsem_down_read_failed+0x1e6/0x350 [ 1001.412434] schedule+0x8d/0x1b0 [ 1001.415790] rwsem_down_read_failed+0x1e6/0x350 [ 1001.421712] ? rt_mutex_futex_unlock+0xc0/0xc0 [ 1001.426848] ? check_preemption_disabled+0x35/0x240 [ 1001.431866] call_rwsem_down_read_failed+0x14/0x30 [ 1001.437710] down_read+0x44/0x80 [ 1001.441073] ? __do_page_fault+0x7b8/0xad0 [ 1001.445294] __do_page_fault+0x7b8/0xad0 [ 1001.450576] ? spurious_fault+0x640/0x640 [ 1001.454724] ? do_page_fault+0x60/0x500 [ 1001.460679] ? page_fault+0x2f/0x50 [ 1001.464302] page_fault+0x45/0x50 [ 1001.468592] RIP: a130b41c:0x7ffde13841b0 [ 1001.472641] RSP: 0064:0000000000000032 EFLAGS: 7ffde1384190 [ 1001.472702] INFO: task syz-executor262:8478 blocked for more than 140 seconds. [ 1001.485890] Not tainted 4.14.264-syzkaller #0 [ 1001.490887] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1001.500348] syz-executor262 D29288 8478 7983 0x80000004 [ 1001.506305] Call Trace: [ 1001.508911] __schedule+0x88b/0x1de0 [ 1001.512622] ? io_schedule_timeout+0x140/0x140 [ 1001.517497] ? mark_held_locks+0xa6/0xf0 [ 1001.521557] ? _raw_spin_unlock_irq+0x24/0x80 [ 1001.526291] ? rwsem_down_read_failed+0x1e6/0x350 [ 1001.531135] schedule+0x8d/0x1b0 [ 1001.534491] rwsem_down_read_failed+0x1e6/0x350 [ 1001.539402] ? rt_mutex_futex_unlock+0xc0/0xc0 [ 1001.543995] call_rwsem_down_read_failed+0x14/0x30 [ 1001.549231] down_read+0x44/0x80 [ 1001.552592] ? do_exit+0x598/0x2850 [ 1001.556436] do_exit+0x598/0x2850 [ 1001.559891] ? wake_up_q+0x82/0xd0 [ 1001.563421] ? mm_update_next_owner+0x5b0/0x5b0 [ 1001.568312] ? get_signal+0x323/0x1ca0 [ 1001.572199] ? lock_acquire+0x170/0x3f0 [ 1001.576391] ? lock_downgrade+0x740/0x740 [ 1001.580535] do_group_exit+0x100/0x2e0 [ 1001.584415] get_signal+0x38d/0x1ca0 [ 1001.588349] ? do_futex+0x127/0x1570 [ 1001.592069] ? lock_downgrade+0x740/0x740 [ 1001.596437] do_signal+0x7c/0x1550 [ 1001.599972] ? wait_for_completion_io+0x10/0x10 [ 1001.604629] ? perf_event_ctx_lock_nested+0x247/0x2c0 [ 1001.610093] ? setup_sigcontext+0x820/0x820 [ 1001.614407] ? put_ctx+0xa/0xe0 [ 1001.617907] ? _perf_ioctl+0x1a40/0x1a40 [ 1001.621966] ? perf_ioctl+0x69/0x80 [ 1001.625581] ? do_vfs_ioctl+0xe2/0xff0 [ 1001.630231] ? lock_acquire+0x170/0x3f0 [ 1001.634201] ? ioctl_preallocate+0x1a0/0x1a0 [ 1001.638813] ? SyS_futex+0x1da/0x290 [ 1001.642522] ? SyS_futex+0x1e3/0x290 [ 1001.646437] ? exit_to_usermode_loop+0x41/0x200 [ 1001.651105] exit_to_usermode_loop+0x160/0x200 [ 1001.655677] do_syscall_64+0x4a3/0x640 [ 1001.659800] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 1001.664980] RIP: 0033:0x7f21a1283b09 [ 1001.668884] RSP: 002b:00007f21a1214318 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 1001.676785] RAX: fffffffffffffe00 RBX: 00007f21a130b418 RCX: 00007f21a1283b09 [ 1001.684045] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f21a130b418 [ 1001.691497] RBP: 00007f21a130b410 R08: 0000000000000000 R09: 0000000000000000 [ 1001.698955] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f21a12d9074 [ 1001.706407] R13: 00007ffde13840df R14: 00007f21a1214400 R15: 0000000000022000 [ 1001.713722] [ 1001.713722] Showing all locks held in the system: [ 1001.720259] 1 lock held by khungtaskd/1534: [ 1001.724657] #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a [ 1001.733751] 1 lock held by syz-executor262/8476: [ 1001.738551] #0: (&mm->mmap_sem){++++}, at: [] __do_page_fault+0x7b8/0xad0 [ 1001.747280] 1 lock held by syz-executor262/8478: [ 1001.752017] #0: (&mm->mmap_sem){++++}, at: [] do_exit+0x598/0x2850 [ 1001.760148] [ 1001.761762] ============================================= [ 1001.761762] [ 1001.769709] NMI backtrace for cpu 1 [ 1001.773341] CPU: 1 PID: 1534 Comm: khungtaskd Not tainted 4.14.264-syzkaller #0 [ 1001.780771] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1001.790109] Call Trace: [ 1001.792685] dump_stack+0x1b2/0x281 [ 1001.796299] nmi_cpu_backtrace.cold+0x57/0x93 [ 1001.800780] ? irq_force_complete_move+0x350/0x350 [ 1001.805696] nmi_trigger_cpumask_backtrace+0x13a/0x180 [ 1001.810961] watchdog+0x5b9/0xb40 [ 1001.814403] ? hungtask_pm_notify+0x50/0x50 [ 1001.818714] kthread+0x30d/0x420 [ 1001.822069] ? kthread_create_on_node+0xd0/0xd0 [ 1001.826723] ret_from_fork+0x24/0x30 [ 1001.830501] Sending NMI from CPU 1 to CPUs 0: [ 1001.835337] NMI backtrace for cpu 0 [ 1001.835342] CPU: 0 PID: 4622 Comm: systemd-journal Not tainted 4.14.264-syzkaller #0 [ 1001.835346] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1001.835349] task: ffff8880a17c60c0 task.stack: ffff8880a17c8000 [ 1001.835352] RIP: 0010:__sanitizer_cov_trace_pc+0x15/0x50 [ 1001.835355] RSP: 0018:ffff8880a17cfa40 EFLAGS: 00000286 [ 1001.835360] RAX: ffff8880a17c60c0 RBX: dffffc0000000000 RCX: 000000007fff0000 [ 1001.835363] RDX: 0000000080000000 RSI: ffffc90001ac0030 RDI: ffff8880a17cfb58 [ 1001.835367] RBP: ffff8880a17cfb58 R08: 0000000000000000 R09: 0000000000000000 [ 1001.835370] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff878f0220 [ 1001.835374] R13: 1ffff110142f9f50 R14: ffffc90001ac0030 R15: ffffc90001ac0000 [ 1001.835378] FS: 00007fe8985c58c0(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 1001.835381] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1001.835384] CR2: 00007fe89599a000 CR3: 00000000a1537000 CR4: 00000000003406f0 [ 1001.835388] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1001.835391] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1001.835393] Call Trace: [ 1001.835395] ___bpf_prog_run+0x7c/0x5a70 [ 1001.835398] ? lock_acquire+0x170/0x3f0 [ 1001.835400] ? lock_downgrade+0x740/0x740 [ 1001.835403] ? bpf_jit_compile+0x30/0x30 [ 1001.835405] ? __bpf_prog_run32+0x7c/0xa0 [ 1001.835407] ? __bpf_prog_run64+0xb0/0xb0 [ 1001.835410] ? unwind_get_return_address+0x51/0x90 [ 1001.835413] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 1001.835415] ? __save_stack_trace+0xa0/0x160 [ 1001.835417] ? kasan_slab_free+0x12d/0x1a0 [ 1001.835420] ? seccomp_run_filters+0xfb/0x540 [ 1001.835422] ? __put_seccomp_filter+0x90/0x90 [ 1001.835425] ? debug_check_no_obj_freed+0x2c0/0x680 [ 1001.835428] ? __lock_acquire+0x5fc/0x3f20 [ 1001.835430] ? __seccomp_filter+0x7e/0xd60 [ 1001.835433] ? seccomp_send_sigsys+0x180/0x180 [ 1001.835435] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 1001.835438] ? debug_check_no_obj_freed+0x2c0/0x680 [ 1001.835440] ? trace_hardirqs_on+0x10/0x10 [ 1001.835443] ? putname+0xcd/0x110 [ 1001.835446] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 1001.835448] ? __secure_computing+0xdd/0x3e0 [ 1001.835450] ? syscall_trace_enter+0x359/0xc20 [ 1001.835453] ? syscall_slow_exit_work+0x560/0x560 [ 1001.835455] ? do_syscall_64+0x4c/0x640 [ 1001.835458] ? do_syscall_64+0x41b/0x640 [ 1001.835461] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 1001.835462] Code: 29 00 e9 2c fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 c0 7f 02 00 48 85 c0 74 1a 65 8b 15 cb 42 ad 7e <81> e2 00 01 1f 00 75 0b 8b 90 58 13 00 00 83 fa 01 74 01 c3 48 [ 1001.836809] Kernel panic - not syncing: hung_task: blocked tasks [ 1002.093298] CPU: 1 PID: 1534 Comm: khungtaskd Not tainted 4.14.264-syzkaller #0 [ 1002.100726] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1002.110064] Call Trace: [ 1002.112642] dump_stack+0x1b2/0x281 [ 1002.116258] panic+0x1f9/0x42d [ 1002.119434] ? add_taint.cold+0x16/0x16 [ 1002.123402] watchdog+0x5ca/0xb40 [ 1002.126845] ? hungtask_pm_notify+0x50/0x50 [ 1002.131153] kthread+0x30d/0x420 [ 1002.134503] ? kthread_create_on_node+0xd0/0xd0 [ 1002.139157] ret_from_fork+0x24/0x30 [ 1002.143154] Kernel Offset: disabled [ 1002.146764] Rebooting in 86400 seconds..