[....] 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. [ 28.278930] kauditd_printk_skb: 7 callbacks suppressed [ 28.278944] audit: type=1800 audit(1542762032.011:29): pid=5864 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 28.312410] audit: type=1800 audit(1542762032.021:30): pid=5864 uid=0 auid=4294967295 ses=4294967295 subj==unconfined 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 '10.128.0.22' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 303.535521] libceph: connect [f::]:6789 error -101 [ 303.540892] libceph: mon0 [f::]:6789 connect error [ 304.530825] libceph: connect [f::]:6789 error -101 [ 304.535860] libceph: mon0 [f::]:6789 connect error [ 305.570201] libceph: connect [f::]:6789 error -101 [ 305.575368] libceph: mon0 [f::]:6789 connect error [ 306.611457] libceph: connect [f::]:6789 error -101 [ 306.616474] libceph: mon0 [f::]:6789 connect error [ 307.570194] libceph: connect [f::]:6789 error -101 [ 307.575443] libceph: mon0 [f::]:6789 connect error executing program [ 308.538251] libceph: connect [f::]:6789 error -101 [ 308.543780] libceph: mon0 [f::]:6789 connect error [ 309.570264] libceph: connect [f::]:6789 error -101 [ 309.575495] libceph: mon0 [f::]:6789 connect error [ 310.530127] libceph: connect [f::]:6789 error -101 [ 310.535305] libceph: mon0 [f::]:6789 connect error [ 311.570135] libceph: connect [f::]:6789 error -101 [ 311.575497] libceph: mon0 [f::]:6789 connect error [ 312.610106] libceph: connect [f::]:6789 error -101 [ 312.615330] libceph: mon0 [f::]:6789 connect error executing program [ 313.544116] libceph: connect [f::]:6789 error -101 [ 313.549179] libceph: mon0 [f::]:6789 connect error [ 314.610116] libceph: connect [f::]:6789 error -101 [ 314.615322] libceph: mon0 [f::]:6789 connect error [ 315.570121] libceph: connect [f::]:6789 error -101 [ 315.575161] libceph: mon0 [f::]:6789 connect error [ 316.610485] libceph: connect [f::]:6789 error -101 [ 316.615772] libceph: mon0 [f::]:6789 connect error [ 317.570197] libceph: connect [f::]:6789 error -101 [ 317.575452] libceph: mon0 [f::]:6789 connect error executing program [ 318.548215] libceph: connect [f::]:6789 error -101 [ 318.553620] libceph: mon0 [f::]:6789 connect error [ 319.570175] libceph: connect [f::]:6789 error -101 [ 319.575400] libceph: mon0 [f::]:6789 connect error [ 320.610189] libceph: connect [f::]:6789 error -101 [ 320.615220] libceph: mon0 [f::]:6789 connect error [ 321.570260] libceph: connect [f::]:6789 error -101 [ 321.575682] libceph: mon0 [f::]:6789 connect error [ 322.530083] libceph: connect [f::]:6789 error -101 [ 322.535260] libceph: mon0 [f::]:6789 connect error executing program [ 323.553944] libceph: connect [f::]:6789 error -101 [ 323.559003] libceph: mon0 [f::]:6789 connect error [ 324.530188] libceph: connect [f::]:6789 error -101 [ 324.535351] libceph: mon0 [f::]:6789 connect error [ 325.570184] libceph: connect [f::]:6789 error -101 [ 325.575223] libceph: mon0 [f::]:6789 connect error [ 326.610569] libceph: connect [f::]:6789 error -101 [ 326.615731] libceph: mon0 [f::]:6789 connect error [ 327.570123] libceph: connect [f::]:6789 error -101 [ 327.575331] libceph: mon0 [f::]:6789 connect error executing program [ 328.558341] libceph: connect [f::]:6789 error -101 [ 328.563497] libceph: mon0 [f::]:6789 connect error [ 329.570164] libceph: connect [f::]:6789 error -101 [ 329.575361] libceph: mon0 [f::]:6789 connect error [ 330.530156] libceph: connect [f::]:6789 error -101 [ 330.535490] libceph: mon0 [f::]:6789 connect error [ 331.570255] libceph: connect [f::]:6789 error -101 [ 331.575510] libceph: mon0 [f::]:6789 connect error [ 332.610176] libceph: connect [f::]:6789 error -101 [ 332.615387] libceph: mon0 [f::]:6789 connect error executing program [ 333.563688] libceph: connect [f::]:6789 error -101 [ 333.568738] libceph: mon0 [f::]:6789 connect error [ 334.530112] libceph: connect [f::]:6789 error -101 [ 334.535653] libceph: mon0 [f::]:6789 connect error [ 335.570144] libceph: connect [f::]:6789 error -101 [ 335.575434] libceph: mon0 [f::]:6789 connect error [ 336.610482] libceph: connect [f::]:6789 error -101 [ 336.615718] libceph: mon0 [f::]:6789 connect error [ 337.570158] libceph: connect [f::]:6789 error -101 [ 337.575626] libceph: mon0 [f::]:6789 connect error executing program [ 338.567996] libceph: connect [f::]:6789 error -101 [ 338.573110] libceph: mon0 [f::]:6789 connect error [ 338.578547] WARNING: CPU: 1 PID: 6044 at net/ceph/messenger.c:3080 clear_standby+0x12f/0x160 [ 338.587350] Kernel panic - not syncing: panic_on_warn set ... [ 338.593371] CPU: 1 PID: 6044 Comm: syz-executor935 Not tainted 4.20.0-rc3+ #342 [ 338.600832] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 338.610510] Call Trace: [ 338.613097] dump_stack+0x244/0x39d [ 338.616812] ? dump_stack_print_info.cold.1+0x20/0x20 [ 338.622383] panic+0x2ad/0x55c [ 338.625562] ? add_taint.cold.5+0x16/0x16 [ 338.629809] ? __warn.cold.8+0x5/0x45 [ 338.633714] ? __warn+0xe8/0x1d0 [ 338.637171] ? clear_standby+0x12f/0x160 [ 338.641274] __warn.cold.8+0x20/0x45 [ 338.645032] ? rcu_softirq_qs+0x20/0x20 [ 338.649012] ? clear_standby+0x12f/0x160 [ 338.653088] report_bug+0x254/0x2d0 [ 338.656721] do_error_trap+0x11b/0x200 [ 338.660648] do_invalid_op+0x36/0x40 [ 338.664469] ? clear_standby+0x12f/0x160 [ 338.668639] invalid_op+0x14/0x20 [ 338.672096] RIP: 0010:clear_standby+0x12f/0x160 [ 338.676761] Code: de e8 f5 76 c6 f9 48 85 db 0f 84 39 ff ff ff e8 b7 75 c6 f9 0f 0b e9 2d ff ff ff e8 ab c4 09 fa e9 67 ff ff ff e8 a1 75 c6 f9 <0f> 0b eb a5 e8 b8 c4 09 fa e9 f6 fe ff ff 4c 89 ef e8 ab c4 09 fa [ 338.695879] RSP: 0018:ffff8881cceef640 EFLAGS: 00010293 [ 338.701530] RAX: ffff8881b5658000 RBX: ffff8881c086c8a8 RCX: ffffffff87b914f3 [ 338.709003] RDX: 0000000000000000 RSI: ffffffff87b9154f RDI: 0000000000000007 [ 338.716277] RBP: ffff8881cceef658 R08: ffff8881b5658000 R09: ffffed103810d945 [ 338.723939] R10: ffff8881cceef658 R11: ffff8881c086ca2f R12: 0000000000000001 [ 338.731432] R13: ffff8881c086c9e0 R14: ffff8881c3993cf8 R15: ffff8881cceef728 [ 338.739128] ? clear_standby+0xd3/0x160 [ 338.743102] ? clear_standby+0x12f/0x160 [ 338.747156] ceph_con_send+0x460/0x600 [ 338.751205] ? ceph_msg_new+0x40/0x40 [ 338.754999] ? ceph_auth_entity_name_encode+0x120/0x120 [ 338.760374] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 338.765905] __send_prepared_auth_request+0x155/0x1b0 [ 338.771092] __open_session+0x3cd/0x550 [ 338.775156] ceph_monc_open_session+0x193/0x350 [ 338.779814] __ceph_open_session+0xe2/0x810 [ 338.784185] ? apparmor_cred_transfer+0x590/0x590 [ 338.789015] ? __kasan_slab_free+0xcf/0x150 [ 338.793322] ? bdi_register_va+0x49/0x80 [ 338.797396] ? ceph_destroy_client+0x1a0/0x1a0 [ 338.801958] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 338.807477] ? super_setup_bdi_name+0x1a5/0x240 [ 338.812130] ? kill_block_super+0x100/0x100 [ 338.816434] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 338.821958] ceph_mount+0x11c5/0x1b30 [ 338.825743] ? ceph_compare_super+0x520/0x520 [ 338.830243] ? __get_fs_type+0x97/0xc0 [ 338.834180] ? lock_downgrade+0x900/0x900 [ 338.838378] mount_fs+0xae/0x31d [ 338.841730] vfs_kern_mount.part.35+0xdc/0x4f0 [ 338.846298] ? may_umount+0xb0/0xb0 [ 338.849922] ? _raw_read_unlock+0x2c/0x50 [ 338.854081] ? __get_fs_type+0x97/0xc0 [ 338.857958] do_mount+0x581/0x31f0 [ 338.861507] ? lock_downgrade+0x900/0x900 [ 338.865651] ? copy_mount_string+0x40/0x40 [ 338.869872] ? usercopy_warn+0x110/0x110 [ 338.873929] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 338.879464] ? _copy_from_user+0xdf/0x150 [ 338.883602] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 338.889123] ? copy_mount_options+0x315/0x430 [ 338.893616] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 338.899252] ksys_mount+0x12d/0x140 [ 338.902864] __x64_sys_mount+0xbe/0x150 [ 338.906820] do_syscall_64+0x1b9/0x820 [ 338.910690] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 338.916037] ? syscall_return_slowpath+0x5e0/0x5e0 [ 338.920970] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 338.925811] ? trace_hardirqs_on_caller+0x310/0x310 [ 338.930814] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 338.935811] ? prepare_exit_to_usermode+0x291/0x3b0 [ 338.940842] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 338.945698] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 338.950882] RIP: 0033:0x440d39 [ 338.954083] 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 [ 338.972964] RSP: 002b:00007ffd57810598 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 338.980768] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 0000000000440d39 [ 338.988025] RDX: 00000000200001c0 RSI: 0000000020000180 RDI: 0000000020000240 [ 338.995274] RBP: 0000000000000000 R08: 0000000000000000 R09: 00000009004002c8 [ 339.002524] R10: 0000000000000000 R11: 0000000000000286 R12: 00000000000516e6 [ 339.009775] R13: 0000000000401d10 R14: 0000000000000000 R15: 0000000000000000 [ 339.018139] Kernel Offset: disabled [ 339.021815] Rebooting in 86400 seconds..