Warning: Permanently added '10.128.1.3' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 414.923314] kauditd_printk_skb: 3 callbacks suppressed [ 414.923325] audit: type=1400 audit(1556013797.466:36): avc: denied { map } for pid=7808 comm="syz-executor524" path="/root/syz-executor524503008" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program [ 568.910458] INFO: task syz-executor524:7829 blocked for more than 140 seconds. [ 568.917961] Not tainted 4.19.36 #4 [ 568.922834] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 568.930863] syz-executor524 D28216 7829 7808 0x00000004 [ 568.936578] Call Trace: [ 568.939395] __schedule+0x813/0x1d00 [ 568.943232] ? trace_hardirqs_on+0x67/0x230 [ 568.947591] ? kasan_check_read+0x11/0x20 [ 568.951801] ? pci_mmcfg_check_reserved+0x170/0x170 [ 568.957037] ? mark_held_locks+0x100/0x100 [ 568.961336] schedule+0x92/0x1c0 [ 568.965240] schedule_timeout+0x8ca/0xfd0 [ 568.969401] ? wait_for_completion+0x294/0x440 [ 568.974168] ? find_held_lock+0x35/0x130 [ 568.978237] ? usleep_range+0x170/0x170 [ 568.982449] ? mark_held_locks+0xb1/0x100 [ 568.986610] ? _raw_spin_unlock_irq+0x28/0x90 [ 568.991154] ? wait_for_completion+0x294/0x440 [ 568.995738] ? _raw_spin_unlock_irq+0x28/0x90 [ 569.000435] ? lockdep_hardirqs_on+0x415/0x5d0 [ 569.005036] ? trace_hardirqs_on+0x67/0x230 [ 569.009342] ? kasan_check_read+0x11/0x20 [ 569.013565] wait_for_completion+0x29c/0x440 [ 569.017995] ? wait_for_completion_interruptible+0x4b0/0x4b0 [ 569.024114] ? wake_up_q+0x100/0x100 [ 569.027887] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 569.034499] ? pcrypt_aead_encrypt+0x372/0x470 [ 569.047246] aead_recvmsg+0x1451/0x1aa0 [ 569.051956] ? aead_release+0x50/0x50 [ 569.055796] ? selinux_socket_recvmsg+0x36/0x40 [ 569.060543] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 569.066086] ? security_socket_recvmsg+0x9b/0xd0 [ 569.070910] ? aead_release+0x50/0x50 [ 569.074776] sock_recvmsg+0xd0/0x110 [ 569.078593] sock_read_iter+0x299/0x3b0 [ 569.082632] ? sock_recvmsg+0x110/0x110 [ 569.086660] ? inode_has_perm.isra.0+0x17e/0x210 [ 569.091574] ? fsnotify+0x8bf/0xf00 [ 569.095225] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 569.101001] do_iter_readv_writev+0x67d/0x830 [ 569.105512] ? vfs_dedupe_file_range+0x6f0/0x6f0 [ 569.110401] ? security_file_permission+0x8f/0x230 [ 569.115357] ? rw_verify_area+0x118/0x360 [ 569.119541] do_iter_read+0x268/0x650 [ 569.123474] ? dup_iter+0x280/0x280 [ 569.127124] vfs_readv+0xf0/0x160 [ 569.130677] ? compat_rw_copy_check_uvector+0x3f0/0x3f0 [ 569.136041] ? __sys_sendmmsg+0x3ae/0x4e0 [ 569.140387] ? __fd_install+0x200/0x640 [ 569.144391] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 569.149972] ? __fget_light+0x1a9/0x230 [ 569.154185] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 569.159740] do_readv+0xf6/0x290 [ 569.163179] ? vfs_readv+0x160/0x160 [ 569.167018] ? do_syscall_64+0x26/0x610 [ 569.171075] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 569.176456] ? do_syscall_64+0x26/0x610 [ 569.181086] __x64_sys_readv+0x75/0xb0 [ 569.184986] do_syscall_64+0x103/0x610 [ 569.188877] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 569.194155] RIP: 0033:0x441349 [ 569.197361] Code: 2d 20 72 73 79 73 6c 6f 67 64 20 63 61 6e 20 6e 6f 74 20 72 75 6e 21 0a 00 4d 61 69 6e 20 70 72 6f 63 65 73 73 69 6e 67 20 71 <75> 65 75 65 20 69 73 20 69 6e 69 74 69 61 6c 69 7a 65 64 20 61 6e [ 569.216526] RSP: 002b:00007fffb7aceab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 [ 569.224399] RAX: ffffffffffffffda RBX: 00000000004a23d8 RCX: 0000000000441349 [ 569.231841] RDX: 0000000000000001 RSI: 00000000200007c0 RDI: 0000000000000004 [ 569.239129] RBP: 00000000000654fd R08: 00000000004002c8 R09: 00000000004002c8 [ 569.246478] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402170 [ 569.253782] R13: 0000000000402200 R14: 0000000000000000 R15: 0000000000000000 [ 569.261305] [ 569.261305] Showing all locks held in the system: [ 569.267643] 1 lock held by khungtaskd/1030: [ 569.272009] #0: 00000000cf39a5c1 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e [ 569.280821] 1 lock held by rsyslogd/7659: [ 569.284963] #0: 000000006a8f2a16 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 569.292934] 2 locks held by getty/7782: [ 569.296916] #0: 000000003ecda970 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 569.305257] #1: 00000000a7f960a1 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 [ 569.314679] 2 locks held by getty/7783: [ 569.318792] #0: 00000000054396ee (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 569.327108] #1: 00000000f9585a84 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 [ 569.336156] 2 locks held by getty/7784: [ 569.340128] #0: 00000000ef45a8df (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 569.348438] #1: 00000000f95d6561 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 [ 569.357581] 2 locks held by getty/7785: [ 569.361597] #0: 00000000bbb7f2cf (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 569.369940] #1: 0000000063342a38 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 [ 569.378882] 2 locks held by getty/7786: [ 569.382889] #0: 00000000a472e438 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 569.391192] #1: 0000000098aa57f9 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 [ 569.400088] 2 locks held by getty/7787: [ 569.404190] #0: 00000000bc6f6d24 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 569.412906] #1: 0000000085bfbb26 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 [ 569.421899] 2 locks held by getty/7788: [ 569.425873] #0: 00000000e5bee4ae (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 569.434287] #1: 00000000f23a1c7a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 [ 569.443633] 1 lock held by syz-executor524/7829: [ 569.448380] #0: 00000000bc5efc82 (sk_lock-AF_ALG){+.+.}, at: af_alg_wait_for_data+0x215/0x540 [ 569.457225] [ 569.458860] ============================================= [ 569.458860] [ 569.465934] NMI backtrace for cpu 0 [ 569.469568] CPU: 0 PID: 1030 Comm: khungtaskd Not tainted 4.19.36 #4 [ 569.476066] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 569.485417] Call Trace: [ 569.488152] dump_stack+0x172/0x1f0 [ 569.491778] nmi_cpu_backtrace.cold+0x63/0xa4 [ 569.496294] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 569.501213] nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 [ 569.506552] arch_trigger_cpumask_backtrace+0x14/0x20 [ 569.511740] watchdog+0x9df/0xee0 [ 569.515275] kthread+0x357/0x430 [ 569.518637] ? reset_hung_task_detector+0x30/0x30 [ 569.523470] ? kthread_delayed_work_timer_fn+0x290/0x290 [ 569.528913] ret_from_fork+0x3a/0x50 [ 569.532788] Sending NMI from CPU 0 to CPUs 1: [ 569.537850] NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0x2/0x10 [ 569.539159] Kernel panic - not syncing: hung_task: blocked tasks [ 569.551545] CPU: 0 PID: 1030 Comm: khungtaskd Not tainted 4.19.36 #4 [ 569.558022] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 569.567424] Call Trace: [ 569.570015] dump_stack+0x172/0x1f0 [ 569.573684] panic+0x263/0x51d [ 569.576868] ? __warn_printk+0xf3/0xf3 [ 569.580746] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 569.585674] ? ___preempt_schedule+0x16/0x18 [ 569.590123] ? nmi_trigger_cpumask_backtrace+0x165/0x1f8 [ 569.595570] ? nmi_trigger_cpumask_backtrace+0x1c1/0x1f8 [ 569.601075] ? nmi_trigger_cpumask_backtrace+0x1cb/0x1f8 [ 569.606625] ? nmi_trigger_cpumask_backtrace+0x165/0x1f8 [ 569.612070] watchdog+0x9f0/0xee0 [ 569.615563] kthread+0x357/0x430 [ 569.618921] ? reset_hung_task_detector+0x30/0x30 [ 569.623750] ? kthread_delayed_work_timer_fn+0x290/0x290 [ 569.629194] ret_from_fork+0x3a/0x50 [ 569.633972] Kernel Offset: disabled [ 569.637670] Rebooting in 86400 seconds..