Warning: Permanently added '10.128.0.218' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 616.280701][ T1146] INFO: task syz-executor067:6800 blocked for more than 143 seconds. [ 616.288956][ T1146] Not tainted 5.8.0-rc3-next-20200701-syzkaller #0 [ 616.297964][ T1146] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 616.306946][ T1146] syz-executor067 D27632 6800 6794 0x00004000 [ 616.313373][ T1146] Call Trace: [ 616.316725][ T1146] __schedule+0x8b4/0x1e80 [ 616.321275][ T1146] ? io_schedule_timeout+0x140/0x140 [ 616.326642][ T1146] ? lockdep_hardirqs_on+0x6a/0xe0 [ 616.331828][ T1146] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 616.337661][ T1146] ? prepare_to_wait+0x121/0x2a0 [ 616.342672][ T1146] schedule+0xd0/0x2a0 [ 616.346752][ T1146] bit_wait+0x12/0xa0 [ 616.350821][ T1146] __wait_on_bit+0x60/0x190 [ 616.355338][ T1146] ? out_of_line_wait_on_bit_lock+0x110/0x110 [ 616.362220][ T1146] out_of_line_wait_on_bit+0xd5/0x110 [ 616.368307][ T1146] ? __wait_on_bit+0x190/0x190 [ 616.373880][ T1146] ? var_wake_function+0x130/0x130 [ 616.379017][ T1146] wait_for_key_construction+0x10b/0x140 [ 616.384749][ T1146] request_key_tag+0x7a/0xb0 [ 616.389397][ T1146] dns_query+0x257/0x6c3 [ 616.393764][ T1146] ceph_parse_ips+0x77f/0x8c0 [ 616.398472][ T1146] ? ceph_con_opened+0x50/0x50 [ 616.403321][ T1146] ? lookup_constant+0xf0/0xf0 [ 616.408099][ T1146] ? __fs_parse+0x269/0x810 [ 616.412673][ T1146] ceph_parse_mon_ips+0x59/0xc0 [ 616.417547][ T1146] ceph_parse_mount_param+0x1239/0x17e0 [ 616.423166][ T1146] ? lock_is_held_type+0xb0/0xe0 [ 616.428114][ T1146] ? vfs_parse_fs_string+0xc0/0x150 [ 616.433372][ T1146] ? rcu_read_lock_sched_held+0x3a/0xb0 [ 616.438941][ T1146] ? extra_mon_dispatch+0x130/0x130 [ 616.444207][ T1146] ? vfs_parse_fs_string+0xc0/0x150 [ 616.449407][ T1146] ? extra_mon_dispatch+0x130/0x130 [ 616.454653][ T1146] vfs_parse_fs_param+0x203/0x550 [ 616.459699][ T1146] vfs_parse_fs_string+0xe6/0x150 [ 616.464790][ T1146] ? vfs_parse_fs_param+0x550/0x550 [ 616.470008][ T1146] ? alloc_fs_context+0x56e/0x880 [ 616.475085][ T1146] do_mount+0x1222/0x1df0 [ 616.479437][ T1146] ? copy_mount_string+0x40/0x40 [ 616.484429][ T1146] ? __might_fault+0x190/0x1d0 [ 616.489189][ T1146] ? _copy_from_user+0x138/0x190 [ 616.494958][ T1146] ? memdup_user+0x7c/0xd0 [ 616.499364][ T1146] __x64_sys_mount+0x18f/0x230 [ 616.504250][ T1146] do_syscall_64+0x60/0xe0 [ 616.508669][ T1146] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 616.514598][ T1146] RIP: 0033:0x4401b9 [ 616.518487][ T1146] Code: Bad RIP value. [ 616.522722][ T1146] RSP: 002b:00007fff4cd307c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 616.531997][ T1146] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00000000004401b9 [ 616.539971][ T1146] RDX: 0000000020000040 RSI: 0000000020000080 RDI: 00000000200002c0 [ 616.548004][ T1146] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 616.556053][ T1146] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a40 [ 616.564105][ T1146] R13: 0000000000401ad0 R14: 0000000000000000 R15: 0000000000000000 [ 616.572165][ T1146] [ 616.572165][ T1146] Showing all locks held in the system: [ 616.579884][ T1146] 1 lock held by khungtaskd/1146: [ 616.584965][ T1146] #0: ffffffff89bc3000 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 616.594913][ T1146] 1 lock held by in:imklog/6692: [ 616.599826][ T1146] #0: ffff88809a086af0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 [ 616.608999][ T1146] [ 616.611371][ T1146] ============================================= [ 616.611371][ T1146] [ 616.619772][ T1146] NMI backtrace for cpu 0 [ 616.624177][ T1146] CPU: 0 PID: 1146 Comm: khungtaskd Not tainted 5.8.0-rc3-next-20200701-syzkaller #0 [ 616.633621][ T1146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 616.643649][ T1146] Call Trace: [ 616.647010][ T1146] dump_stack+0x18f/0x20d [ 616.651332][ T1146] nmi_cpu_backtrace.cold+0x70/0xb1 [ 616.656523][ T1146] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 616.662134][ T1146] nmi_trigger_cpumask_backtrace+0x1b3/0x223 [ 616.668090][ T1146] watchdog+0xd89/0xf30 [ 616.672224][ T1146] ? trace_sched_process_hang+0x2e0/0x2e0 [ 616.677926][ T1146] kthread+0x3b5/0x4a0 [ 616.681971][ T1146] ? __kthread_bind_mask+0xc0/0xc0 [ 616.687056][ T1146] ? __kthread_bind_mask+0xc0/0xc0 [ 616.692679][ T1146] ret_from_fork+0x1f/0x30 [ 616.697172][ T1146] Sending NMI from CPU 0 to CPUs 1: [ 616.702663][ C1] NMI backtrace for cpu 1 [ 616.702670][ C1] CPU: 1 PID: 3852 Comm: systemd-journal Not tainted 5.8.0-rc3-next-20200701-syzkaller #0 [ 616.702677][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 616.702681][ C1] RIP: 0010:handle_mm_fault+0x1da0/0x43f0 [ 616.702693][ C1] Code: ff e9 9d f3 ff ff e8 0f 93 cf ff 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 b9 20 00 00 4c 8b 65 00 <4c> 89 e3 31 ff 48 83 e3 9f 48 89 de e8 7f 8f cf ff 48 85 db 0f 84 [ 616.702697][ C1] RSP: 0000:ffffc900015d7d70 EFLAGS: 00000246 [ 616.702705][ C1] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81a44fec [ 616.702711][ C1] RDX: 1ffff11012ad8f4a RSI: ffffffff81a45861 RDI: 0000000000000007 [ 616.702716][ C1] RBP: ffff8880956c7a50 R08: 0000000000000000 R09: ffffffff8aaeb0e7 [ 616.702722][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000091cd0067 [ 616.702727][ C1] R13: 0000000000000000 R14: 0000000000000040 R15: 0000000000000001 [ 616.702733][ C1] FS: 00007fdaac0718c0(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 616.702738][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 616.702743][ C1] CR2: 00007fdaa9411000 CR3: 0000000094cdd000 CR4: 00000000001506e0 [ 616.702749][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 616.702754][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 616.702757][ C1] Call Trace: [ 616.702762][ C1] ? apply_to_existing_page_range+0x40/0x40 [ 616.702765][ C1] do_user_addr_fault+0x5a2/0xd00 [ 616.702769][ C1] exc_page_fault+0xab/0x170 [ 616.702773][ C1] ? asm_exc_page_fault+0x8/0x30 [ 616.702777][ C1] asm_exc_page_fault+0x1e/0x30 [ 616.702780][ C1] RIP: 0033:0x7fdaab37b124 [ 616.702784][ C1] Code: Bad RIP value. [ 616.702788][ C1] RSP: 002b:00007ffcfb2ef578 EFLAGS: 00010202 [ 616.702796][ C1] RAX: 00007fdaa9410fe0 RBX: 0000000000000090 RCX: 000000000021ffa0 [ 616.702802][ C1] RDX: 0000000000000090 RSI: 00007ffcfb2ef620 RDI: 00007fdaa9410fe0 [ 616.702807][ C1] RBP: 0000000000000000 R08: 0000000000220070 R09: 00007ffcfb2f26b0 [ 616.702812][ C1] R10: 000000000001b706 R11: 00007fdaa9410fa0 R12: 00005652b21dbe80 [ 616.702818][ C1] R13: 715c95999b8098ed R14: 00007ffcfb2ef810 R15: 00007ffcfb2ef620 [ 616.704268][ T1146] Kernel panic - not syncing: hung_task: blocked tasks [ 616.928027][ T1146] CPU: 0 PID: 1146 Comm: khungtaskd Not tainted 5.8.0-rc3-next-20200701-syzkaller #0 [ 616.937462][ T1146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 616.947491][ T1146] Call Trace: [ 616.950766][ T1146] dump_stack+0x18f/0x20d [ 616.955074][ T1146] panic+0x2e3/0x75c [ 616.958957][ T1146] ? __warn_printk+0xf3/0xf3 [ 616.963528][ T1146] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 616.969139][ T1146] ? preempt_schedule_thunk+0x16/0x18 [ 616.974500][ T1146] ? watchdog.cold+0x22d/0x24b [ 616.979260][ T1146] ? watchdog+0xc59/0xf30 [ 616.983566][ T1146] watchdog.cold+0x23e/0x24b [ 616.989358][ T1146] ? trace_sched_process_hang+0x2e0/0x2e0 [ 616.995067][ T1146] kthread+0x3b5/0x4a0 [ 616.999113][ T1146] ? __kthread_bind_mask+0xc0/0xc0 [ 617.004248][ T1146] ? __kthread_bind_mask+0xc0/0xc0 [ 617.009351][ T1146] ret_from_fork+0x1f/0x30 [ 617.015022][ T1146] Kernel Offset: disabled [ 617.019366][ T1146] Rebooting in 86400 seconds..