[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 29.931763] kauditd_printk_skb: 7 callbacks suppressed [ 29.931777] audit: type=1800 audit(1542703507.383:29): pid=5895 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 29.956318] audit: type=1800 audit(1542703507.383:30): pid=5895 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.41' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 94.762778] libceph: connect [d::]:6789 error -101 [ 94.768319] libceph: mon0 [d::]:6789 connect error [ 95.576811] libceph: connect [d::]:6789 error -101 [ 95.581808] libceph: mon0 [d::]:6789 connect error [ 96.536253] libceph: connect [d::]:6789 error -101 [ 96.541335] libceph: mon0 [d::]:6789 connect error [ 97.577117] libceph: connect [d::]:6789 error -101 [ 97.582297] libceph: mon0 [d::]:6789 connect error [ 98.616342] libceph: connect [d::]:6789 error -101 [ 98.621473] libceph: mon0 [d::]:6789 connect error [ 99.576341] libceph: connect [d::]:6789 error -101 [ 99.581372] libceph: mon0 [d::]:6789 connect error executing program [ 99.764164] libceph: connect [d::]:6789 error -101 [ 99.769286] libceph: mon0 [d::]:6789 connect error [ 100.536286] libceph: connect [d::]:6789 error -101 [ 100.541486] libceph: mon0 [d::]:6789 connect error [ 101.576269] libceph: connect [d::]:6789 error -101 [ 101.581253] libceph: mon0 [d::]:6789 connect error [ 102.616652] libceph: connect [d::]:6789 error -101 [ 102.621665] libceph: mon0 [d::]:6789 connect error [ 103.576247] libceph: connect [d::]:6789 error -101 [ 103.581692] libceph: mon0 [d::]:6789 connect error [ 104.616296] libceph: connect [d::]:6789 error -101 [ 104.621482] libceph: mon0 [d::]:6789 connect error executing program [ 104.769765] libceph: connect [d::]:6789 error -101 [ 104.774747] libceph: mon0 [d::]:6789 connect error [ 105.576326] libceph: connect [d::]:6789 error -101 [ 105.581326] libceph: mon0 [d::]:6789 connect error [ 106.536411] libceph: connect [d::]:6789 error -101 [ 106.541453] libceph: mon0 [d::]:6789 connect error [ 107.576390] libceph: connect [d::]:6789 error -101 [ 107.581472] libceph: mon0 [d::]:6789 connect error [ 108.616282] libceph: connect [d::]:6789 error -101 [ 108.621433] libceph: mon0 [d::]:6789 connect error [ 109.576356] libceph: connect [d::]:6789 error -101 [ 109.581349] libceph: mon0 [d::]:6789 connect error executing program [ 109.775019] libceph: connect [d::]:6789 error -101 [ 109.780125] libceph: mon0 [d::]:6789 connect error [ 110.616296] libceph: connect [d::]:6789 error -101 [ 110.621513] libceph: mon0 [d::]:6789 connect error [ 111.576628] libceph: connect [d::]:6789 error -101 [ 111.581621] libceph: mon0 [d::]:6789 connect error [ 113.576284] libceph: connect [d::]:6789 error -101 [ 113.581354] libceph: mon0 [d::]:6789 connect error [ 113.587892] libceph: connect [d::]:6789 error -101 [ 113.592918] libceph: mon0 [d::]:6789 connect error [ 114.616414] libceph: connect [d::]:6789 error -101 [ 114.621431] libceph: mon0 [d::]:6789 connect error executing program [ 114.779906] libceph: connect [d::]:6789 error -101 [ 114.784892] libceph: mon0 [d::]:6789 connect error [ 115.576289] libceph: connect [d::]:6789 error -101 [ 115.581299] libceph: mon0 [d::]:6789 connect error [ 116.616440] libceph: connect [d::]:6789 error -101 [ 116.621448] libceph: mon0 [d::]:6789 connect error [ 118.536643] libceph: connect [d::]:6789 error -101 [ 118.541725] libceph: mon0 [d::]:6789 connect error [ 119.576329] libceph: connect [d::]:6789 error -101 [ 119.581325] libceph: mon0 [d::]:6789 connect error executing program [ 119.784832] libceph: connect [d::]:6789 error -101 [ 119.789974] libceph: mon0 [d::]:6789 connect error [ 119.795302] WARNING: CPU: 0 PID: 6065 at net/ceph/messenger.c:3080 clear_standby+0x12f/0x160 [ 119.803924] Kernel panic - not syncing: panic_on_warn set ... [ 119.809795] CPU: 0 PID: 6065 Comm: syz-executor945 Not tainted 4.20.0-rc3+ #120 [ 119.817222] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 119.826556] Call Trace: [ 119.829155] dump_stack+0x244/0x39d [ 119.832772] ? dump_stack_print_info.cold.1+0x20/0x20 [ 119.838066] panic+0x2ad/0x55c [ 119.841252] ? add_taint.cold.5+0x16/0x16 [ 119.845387] ? __warn.cold.8+0x5/0x45 [ 119.849569] ? __warn+0xe8/0x1d0 [ 119.852925] ? clear_standby+0x12f/0x160 [ 119.856974] __warn.cold.8+0x20/0x45 [ 119.860673] ? rcu_softirq_qs+0x20/0x20 [ 119.864649] ? clear_standby+0x12f/0x160 [ 119.868697] report_bug+0x254/0x2d0 [ 119.872318] do_error_trap+0x11b/0x200 [ 119.876203] do_invalid_op+0x36/0x40 [ 119.879904] ? clear_standby+0x12f/0x160 [ 119.883963] invalid_op+0x14/0x20 [ 119.887443] RIP: 0010:clear_standby+0x12f/0x160 [ 119.892102] Code: de e8 f5 86 c6 f9 48 85 db 0f 84 39 ff ff ff e8 b7 85 c6 f9 0f 0b e9 2d ff ff ff e8 ab d4 09 fa e9 67 ff ff ff e8 a1 85 c6 f9 <0f> 0b eb a5 e8 b8 d4 09 fa e9 f6 fe ff ff 4c 89 ef e8 ab d4 09 fa [ 119.910987] RSP: 0018:ffff8881c0357640 EFLAGS: 00010293 [ 119.916335] RAX: ffff8881bffec000 RBX: ffff8881bf0146e8 RCX: ffffffff87b904f3 [ 119.923590] RDX: 0000000000000000 RSI: ffffffff87b9054f RDI: 0000000000000007 [ 119.930844] RBP: ffff8881c0357658 R08: ffff8881bffec000 R09: ffffed1037e0290d [ 119.938097] R10: ffff8881c0357658 R11: ffff8881bf01486f R12: 0000000000000001 [ 119.945349] R13: ffff8881bf014820 R14: ffff8881c1423818 R15: ffff8881c0357728 [ 119.952612] ? clear_standby+0xd3/0x160 [ 119.956573] ? clear_standby+0x12f/0x160 [ 119.960622] ceph_con_send+0x460/0x600 [ 119.964494] ? ceph_msg_new+0x40/0x40 [ 119.968284] ? ceph_auth_entity_name_encode+0x120/0x120 [ 119.973639] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 119.979162] __send_prepared_auth_request+0x155/0x1b0 [ 119.984371] __open_session+0x3cd/0x550 [ 119.988335] ceph_monc_open_session+0x193/0x350 [ 119.992993] __ceph_open_session+0xe2/0x810 [ 119.997307] ? bdi_register_va+0x49/0x80 [ 120.001361] ? ceph_destroy_client+0x1a0/0x1a0 [ 120.005929] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 120.011455] ? super_setup_bdi_name+0x1a5/0x240 [ 120.016143] ? kill_block_super+0x100/0x100 [ 120.020486] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 120.026017] ceph_mount+0x11c5/0x1b30 [ 120.029815] ? ceph_compare_super+0x520/0x520 [ 120.034300] ? smack_sb_copy_data+0x27e/0x2d0 [ 120.038788] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 120.044311] mount_fs+0xae/0x31d [ 120.047670] vfs_kern_mount.part.35+0xdc/0x4f0 [ 120.052241] ? may_umount+0xb0/0xb0 [ 120.055851] ? _raw_read_unlock+0x2c/0x50 [ 120.059989] ? __get_fs_type+0x97/0xc0 [ 120.063865] do_mount+0x581/0x31f0 [ 120.067395] ? check_preemption_disabled+0x48/0x280 [ 120.072399] ? copy_mount_string+0x40/0x40 [ 120.076624] ? copy_mount_options+0x5f/0x430 [ 120.081023] ? rcu_read_lock_sched_held+0x14f/0x180 [ 120.086027] ? kmem_cache_alloc_trace+0x353/0x750 [ 120.090933] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 120.096472] ? _copy_from_user+0xdf/0x150 [ 120.100607] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 120.106134] ? copy_mount_options+0x315/0x430 [ 120.110621] ksys_mount+0x12d/0x140 [ 120.114234] __x64_sys_mount+0xbe/0x150 [ 120.118207] do_syscall_64+0x1b9/0x820 [ 120.122082] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 120.127431] ? syscall_return_slowpath+0x5e0/0x5e0 [ 120.132349] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 120.137178] ? trace_hardirqs_on_caller+0x310/0x310 [ 120.142182] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 120.147194] ? prepare_exit_to_usermode+0x291/0x3b0 [ 120.152205] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 120.157060] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 120.162352] RIP: 0033:0x440d49 [ 120.165545] Code: e8 cc ab 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 bb 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 120.184429] RSP: 002b:00007fff2efa6218 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 120.192122] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 0000000000440d49 [ 120.199383] RDX: 0000000020000100 RSI: 0000000020000080 RDI: 0000000020000040 [ 120.206643] RBP: 0000000000000000 R08: 0000000020000140 R09: 00000009004002c8 [ 120.213895] R10: 0000000000000000 R11: 0000000000000286 R12: 000000000001c03e [ 120.221160] R13: 0000000000401d20 R14: 0000000000000000 R15: 0000000000000000 [ 120.229453] Kernel Offset: disabled [ 120.233120] Rebooting in 86400 seconds..