Warning: Permanently added '10.128.1.27' (ECDSA) to the list of known hosts. executing program executing program executing program syzkaller login: [ 499.983937][ T1045] INFO: task syz-executor231:8559 blocked for more than 143 seconds. [ 499.992253][ T1045] Not tainted 5.2.0-rc5-next-20190617 #16 [ 499.999751][ T1045] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 500.009126][ T1045] syz-executor231 D28264 8559 8552 0x00000004 [ 500.015643][ T1045] Call Trace: [ 500.019180][ T1045] __schedule+0x7c5/0x1560 [ 500.023894][ T1045] ? __sched_text_start+0x8/0x8 [ 500.029032][ T1045] ? _raw_spin_unlock_irq+0x28/0x90 [ 500.034394][ T1045] ? _raw_spin_unlock_irq+0x28/0x90 [ 500.042043][ T1045] ? lockdep_hardirqs_on+0x418/0x5d0 [ 500.047658][ T1045] schedule+0xa8/0x260 [ 500.051982][ T1045] rwsem_down_read_failed+0x213/0x460 [ 500.057577][ T1045] ? rwsem_down_write_failed+0xc60/0xc60 [ 500.063225][ T1045] ? __do_page_fault+0x9e9/0xda0 [ 500.068953][ T1045] down_read+0xa5/0x1e0 [ 500.073118][ T1045] __do_page_fault+0x9e9/0xda0 [ 500.078146][ T1045] ? trace_hardirqs_off_caller+0x65/0x220 [ 500.084096][ T1045] do_page_fault+0x71/0x57d [ 500.088668][ T1045] ? page_fault+0x8/0x30 [ 500.093169][ T1045] page_fault+0x1e/0x30 [ 500.097498][ T1045] RIP: 0033:0x4ab7ed [ 500.101401][ T1045] Code: Bad RIP value. [ 500.105617][ T1045] RSP: 002b:00007ffe2001cde0 EFLAGS: 00010202 [ 500.111703][ T1045] RAX: 00000000004ab910 RBX: 0000000000000001 RCX: 00000000006e0330 [ 500.119844][ T1045] RDX: 0000000000407670 RSI: 0000000000000000 RDI: 00000000004ccc10 [ 500.128747][ T1045] RBP: 00007ffe2001ce00 R08: 000000037ffffa00 R09: 000000037ffffa00 [ 500.136864][ T1045] R10: 00007ffe2001ce70 R11: 0000000000000000 R12: 0000000000000001 [ 500.144968][ T1045] R13: 00000000006e0320 R14: 000000000000002d R15: 20c49ba5e353f7cf [ 500.152963][ T1045] [ 500.152963][ T1045] Showing all locks held in the system: [ 500.160839][ T1045] 1 lock held by khungtaskd/1045: [ 500.165982][ T1045] #0: 0000000074cdff92 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e [ 500.175547][ T1045] 3 locks held by rs:main Q:Reg/8435: [ 500.180916][ T1045] #0: 000000002c33c214 (&rq->lock){-.-.}, at: __schedule+0x1f5/0x1560 [ 500.189370][ T1045] #1: 0000000074cdff92 (rcu_read_lock){....}, at: aa_file_perm+0x125/0xeb0 [ 500.198321][ T1045] #2: 0000000000c74f15 (&sb->s_type->i_mutex_key#10){+.+.}, at: ext4_file_write_iter+0x246/0x1070 [ 500.209177][ T1045] 1 lock held by rsyslogd/8437: [ 500.214190][ T1045] #0: 000000001c4690ad (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 500.222800][ T1045] 2 locks held by getty/8527: [ 500.227669][ T1045] #0: 000000009d982e69 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 500.236881][ T1045] #1: 00000000e9843638 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 500.246603][ T1045] 2 locks held by getty/8528: [ 500.251283][ T1045] #0: 00000000862d2a40 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 500.261177][ T1045] #1: 00000000db8272e5 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 500.271109][ T1045] 2 locks held by getty/8529: [ 500.275934][ T1045] #0: 00000000ceffd710 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 500.285144][ T1045] #1: 000000006b526baf (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 500.295024][ T1045] 2 locks held by getty/8530: [ 500.299784][ T1045] #0: 00000000d30aa397 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 500.308930][ T1045] #1: 0000000012312a38 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 500.318722][ T1045] 2 locks held by getty/8531: [ 500.323424][ T1045] #0: 00000000804d85cc (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 500.332660][ T1045] #1: 0000000004023033 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 500.342383][ T1045] 2 locks held by getty/8532: [ 500.347196][ T1045] #0: 00000000b01b81d3 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 500.356304][ T1045] #1: 000000009d8258d4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 500.366022][ T1045] 2 locks held by getty/8533: [ 500.371992][ T1045] #0: 00000000b257a49f (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 500.381123][ T1045] #1: 00000000850ee8ef (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 500.391623][ T1045] 1 lock held by syz-executor231/8559: [ 500.397217][ T1045] #0: 000000000e8b3ec3 (&mm->mmap_sem#2){++++}, at: __do_page_fault+0x9e9/0xda0 [ 500.406537][ T1045] 2 locks held by syz-executor231/8560: [ 500.412079][ T1045] 1 lock held by syz-executor231/8561: [ 500.417697][ T1045] #0: 000000000e8b3ec3 (&mm->mmap_sem#2){++++}, at: do_exit+0x443/0x2fa0 [ 500.426363][ T1045] [ 500.428685][ T1045] ============================================= [ 500.428685][ T1045] [ 500.437421][ T1045] NMI backtrace for cpu 1 [ 500.441869][ T1045] CPU: 1 PID: 1045 Comm: khungtaskd Not tainted 5.2.0-rc5-next-20190617 #16 [ 500.450626][ T1045] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 500.460695][ T1045] Call Trace: [ 500.464082][ T1045] dump_stack+0x172/0x1f0 [ 500.468427][ T1045] nmi_cpu_backtrace.cold+0x63/0xa4 [ 500.473635][ T1045] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 500.479273][ T1045] nmi_trigger_cpumask_backtrace+0x1be/0x236 [ 500.485258][ T1045] arch_trigger_cpumask_backtrace+0x14/0x20 [ 500.491149][ T1045] watchdog+0xb88/0x12b0 [ 500.495409][ T1045] kthread+0x354/0x420 [ 500.499481][ T1045] ? reset_hung_task_detector+0x30/0x30 [ 500.505033][ T1045] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 500.511279][ T1045] ret_from_fork+0x24/0x30 [ 500.515989][ T1045] Sending NMI from CPU 1 to CPUs 0: [ 500.521689][ C0] NMI backtrace for cpu 0 [ 500.521696][ C0] CPU: 0 PID: 8560 Comm: syz-executor231 Not tainted 5.2.0-rc5-next-20190617 #16 [ 500.521701][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 500.521705][ C0] RIP: 0010:lock_is_held_type+0x272/0x320 [ 500.521715][ C0] Code: ff df c7 83 8c 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 88 00 00 00 48 83 3d e6 69 7b 07 00 74 31 48 8b 7d c0 57 9d <0f> 1f 44 00 00 48 83 c4 20 44 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d [ 500.521718][ C0] RSP: 0018:ffff88808ed4f840 EFLAGS: 00000282 [ 500.521726][ C0] RAX: 1ffffffff11a4f6e RBX: ffff888094f50580 RCX: ffff888094f50e10 [ 500.521731][ C0] RDX: dffffc0000000000 RSI: ffffffff88da3cc0 RDI: 0000000000000282 [ 500.521735][ C0] RBP: ffff88808ed4f888 R08: ffffffff81889d46 R09: ffffed1010f1629f [ 500.521740][ C0] R10: ffff88808ed4fa98 R11: ffff8880878b14f7 R12: 0000000000000000 [ 500.521744][ C0] R13: ffff888094f50e10 R14: ffffffff88da3cc0 R15: 0000000000000001 [ 500.521749][ C0] FS: 00007f098c683700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 500.521753][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 500.521758][ C0] CR2: ffffffffff600400 CR3: 00000000a4514000 CR4: 00000000001406f0 [ 500.521762][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 500.521767][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 500.521769][ C0] Call Trace: [ 500.521773][ C0] ? perf_mmap+0x746/0x1800 [ 500.521776][ C0] ___might_sleep+0x201/0x280 [ 500.521779][ C0] ? perf_mmap+0x746/0x1800 [ 500.521782][ C0] __might_sleep+0x95/0x190 [ 500.521785][ C0] __mutex_lock+0xc8/0x1310 [ 500.521788][ C0] ? perf_mmap+0x746/0x1800 [ 500.521791][ C0] ? lock_downgrade+0x920/0x920 [ 500.521794][ C0] ? mutex_trylock+0x1e0/0x1e0 [ 500.521798][ C0] ? kasan_check_write+0x14/0x20 [ 500.521801][ C0] ? __mutex_unlock_slowpath+0xf8/0x6b0 [ 500.521804][ C0] ? wait_for_completion+0x440/0x440 [ 500.521808][ C0] mutex_lock_nested+0x16/0x20 [ 500.521811][ C0] ? mutex_lock_nested+0x16/0x20 [ 500.521814][ C0] perf_mmap+0x746/0x1800 [ 500.521817][ C0] ? perf_release+0x50/0x50 [ 500.521820][ C0] ? memset+0x32/0x40 [ 500.521823][ C0] mmap_region+0xc35/0x1760 [ 500.521826][ C0] ? __x64_sys_brk+0x760/0x760 [ 500.521830][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 500.521833][ C0] ? get_unmapped_area+0x293/0x3b0 [ 500.521836][ C0] do_mmap+0x8e2/0x1080 [ 500.521839][ C0] vm_mmap_pgoff+0x1c5/0x230 [ 500.521842][ C0] ? vma_is_stack_for_current+0xd0/0xd0 [ 500.521845][ C0] ? ksys_dup3+0x3e0/0x3e0 [ 500.521849][ C0] ksys_mmap_pgoff+0x4aa/0x630 [ 500.521852][ C0] ? find_mergeable_anon_vma+0x2e0/0x2e0 [ 500.521856][ C0] ? rcu_read_lock_sched_held+0x110/0x130 [ 500.521859][ C0] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 500.521863][ C0] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 500.521866][ C0] ? do_syscall_64+0x26/0x680 [ 500.521869][ C0] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 500.521872][ C0] __x64_sys_mmap+0xe9/0x1b0 [ 500.521875][ C0] do_syscall_64+0xfd/0x680 [ 500.521879][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 500.521882][ C0] RIP: 0033:0x446949 [ 500.521891][ C0] Code: e8 5c 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 0b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 500.521895][ C0] RSP: 002b:00007f098c682da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 500.521902][ C0] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446949 [ 500.521907][ C0] RDX: 0000000000000000 RSI: 0000000000001000 RDI: 0000000020fff000 [ 500.521911][ C0] RBP: 00000000006dbc20 R08: 0000000000000003 R09: 0000000000000000 [ 500.521916][ C0] R10: 0002000000001011 R11: 0000000000000246 R12: 00000000006dbc2c [ 500.521921][ C0] R13: 00007ffe2001cddf R14: 00007f098c6839c0 R15: 20c49ba5e353f7cf [ 500.523809][ T1045] Kernel panic - not syncing: hung_task: blocked tasks [ 500.913895][ T1045] CPU: 1 PID: 1045 Comm: khungtaskd Not tainted 5.2.0-rc5-next-20190617 #16 [ 500.923684][ T1045] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 500.933827][ T1045] Call Trace: [ 500.937123][ T1045] dump_stack+0x172/0x1f0 [ 500.942236][ T1045] panic+0x2cb/0x744 [ 500.946130][ T1045] ? __warn_printk+0xf3/0xf3 [ 500.950884][ T1045] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 500.956513][ T1045] ? ___preempt_schedule+0x16/0x18 [ 500.961808][ T1045] ? nmi_trigger_cpumask_backtrace+0x19e/0x236 [ 500.968053][ T1045] ? nmi_trigger_cpumask_backtrace+0x1fa/0x236 [ 500.974210][ T1045] ? nmi_trigger_cpumask_backtrace+0x204/0x236 [ 500.980815][ T1045] ? nmi_trigger_cpumask_backtrace+0x19e/0x236 [ 500.986983][ T1045] watchdog+0xb99/0x12b0 [ 500.991406][ T1045] kthread+0x354/0x420 [ 500.995473][ T1045] ? reset_hung_task_detector+0x30/0x30 [ 501.001016][ T1045] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 501.007278][ T1045] ret_from_fork+0x24/0x30 [ 501.013414][ T1045] Kernel Offset: disabled [ 501.017852][ T1045] Rebooting in 86400 seconds..