[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 37.103952] audit: type=1800 audit(1538692365.171:25): pid=5864 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 37.123139] audit: type=1800 audit(1538692365.171:26): pid=5864 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 37.157190] audit: type=1800 audit(1538692365.171:27): pid=5864 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.31' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 52.085719] libceph: connect [d::]:6789 error -101 [ 52.091444] libceph: mon0 [d::]:6789 connect error executing program [ 52.245969] libceph: connect [d::]:6789 error -101 [ 52.252255] libceph: mon0 [d::]:6789 connect error executing program [ 52.416970] libceph: connect [d::]:6789 error -101 [ 52.422046] libceph: mon0 [d::]:6789 connect error executing program [ 52.569250] libceph: connect [d::]:6789 error -101 [ 52.574303] libceph: mon0 [d::]:6789 connect error executing program [ 52.730117] libceph: connect [d::]:6789 error -101 [ 52.735132] libceph: mon0 [d::]:6789 connect error executing program [ 52.892035] libceph: connect [d::]:6789 error -101 [ 52.897062] libceph: mon0 [d::]:6789 connect error executing program [ 53.063507] libceph: connect [d::]:6789 error -101 [ 53.068856] libceph: mon0 [d::]:6789 connect error executing program [ 53.224701] libceph: connect [d::]:6789 error -101 [ 53.229760] libceph: mon0 [d::]:6789 connect error executing program [ 53.375772] libceph: connect [d::]:6789 error -101 [ 53.381561] libceph: mon0 [d::]:6789 connect error [ 53.387062] WARNING: CPU: 0 PID: 6052 at net/ceph/messenger.c:3101 clear_standby+0x12f/0x160 [ 53.395739] Kernel panic - not syncing: panic_on_warn set ... [ 53.395739] [ 53.403089] CPU: 0 PID: 6052 Comm: syz-executor509 Not tainted 4.19.0-rc6-next-20181004+ #87 [ 53.412475] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.421922] Call Trace: [ 53.425670] dump_stack+0x1d3/0x2c4 [ 53.430544] ? dump_stack_print_info.cold.2+0x52/0x52 [ 53.435728] panic+0x238/0x4e7 [ 53.438903] ? add_taint.cold.5+0x16/0x16 [ 53.443041] ? __warn.cold.8+0x148/0x1ba [ 53.447192] ? __warn.cold.8+0x117/0x1ba [ 53.451241] ? clear_standby+0x12f/0x160 [ 53.455285] __warn.cold.8+0x163/0x1ba [ 53.459160] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 53.463991] ? clear_standby+0x12f/0x160 [ 53.468090] report_bug+0x254/0x2d0 [ 53.471711] do_error_trap+0x11b/0x200 [ 53.475587] do_invalid_op+0x36/0x40 [ 53.479290] ? clear_standby+0x12f/0x160 [ 53.483349] invalid_op+0x14/0x20 [ 53.486792] RIP: 0010:clear_standby+0x12f/0x160 [ 53.491507] Code: de e8 85 e4 e8 f9 48 85 db 0f 84 39 ff ff ff e8 47 e3 e8 f9 0f 0b e9 2d ff ff ff e8 4b d5 2c fa e9 67 ff ff ff e8 31 e3 e8 f9 <0f> 0b eb a5 e8 58 d5 2c fa e9 f6 fe ff ff 4c 89 ef e8 4b d5 2c fa [ 53.510404] RSP: 0018:ffff8801d48df700 EFLAGS: 00010293 [ 53.515754] RAX: ffff8801d8f7a080 RBX: ffff8801d5a44528 RCX: ffffffff87949783 [ 53.523006] RDX: 0000000000000000 RSI: ffffffff879497df RDI: 0000000000000007 [ 53.530257] RBP: ffff8801d48df718 R08: ffff8801d8f7a080 R09: ffffed003ab488d5 [ 53.537505] R10: ffff8801d48df718 R11: ffff8801d5a446af R12: 0000000000000001 [ 53.544754] R13: ffff8801d5a44660 R14: ffff8801d596db10 R15: ffff8801d48df7e8 [ 53.552081] ? clear_standby+0xd3/0x160 [ 53.557656] ? clear_standby+0x12f/0x160 [ 53.561707] ceph_con_send+0x460/0x600 [ 53.565585] ? ceph_msg_data_add_pages+0x340/0x340 [ 53.570503] ? ceph_auth_entity_name_encode+0x120/0x120 [ 53.575853] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 53.581373] __send_prepared_auth_request+0x155/0x1b0 [ 53.586554] __open_session+0x3cd/0x550 [ 53.590513] ceph_monc_open_session+0x193/0x350 [ 53.595164] __ceph_open_session+0xe2/0x810 [ 53.599480] ? bdi_register_va+0x49/0x80 [ 53.603529] ? ceph_destroy_client+0x1a0/0x1a0 [ 53.608098] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.613629] ? super_setup_bdi_name+0x1a5/0x240 [ 53.618292] ? kill_block_super+0x100/0x100 [ 53.623490] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.629019] ceph_mount+0x11c5/0x1b30 [ 53.632908] ? ceph_compare_super+0x520/0x520 [ 53.637394] ? kmemdup+0x24/0x50 [ 53.640772] ? kasan_unpoison_shadow+0x35/0x50 [ 53.645364] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 53.650896] ? ceph_compare_super+0x520/0x520 [ 53.655389] legacy_get_tree+0x131/0x460 [ 53.659441] vfs_get_tree+0x1cb/0x5c0 [ 53.663228] ? legacy_fs_context_dup+0x1d0/0x1d0 [ 53.667969] do_mount+0x70c/0x1d90 [ 53.671502] ? copy_mount_string+0x40/0x40 [ 53.675725] ? kasan_unpoison_shadow+0x35/0x50 [ 53.680356] ? kasan_kmalloc+0xc7/0xe0 [ 53.684365] ? kmem_cache_alloc_trace+0x31f/0x750 [ 53.689199] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 53.694723] ? _copy_from_user+0xdf/0x150 [ 53.698861] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.704402] ? copy_mount_options+0x315/0x430 [ 53.708967] ksys_mount+0x12d/0x140 [ 53.712594] __x64_sys_mount+0xbe/0x150 [ 53.716651] do_syscall_64+0x1b9/0x820 [ 53.720528] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 53.725880] ? syscall_return_slowpath+0x5e0/0x5e0 [ 53.730847] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 53.735700] ? trace_hardirqs_on_caller+0x310/0x310 [ 53.740705] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 53.745709] ? prepare_exit_to_usermode+0x291/0x3b0 [ 53.750712] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 53.755604] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.761879] RIP: 0033:0x446249 [ 53.765061] Code: e8 2c 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 2b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 53.784059] RSP: 002b:00007ff72de68da8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 53.791870] RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 0000000000446249 [ 53.799263] RDX: 0000000020000100 RSI: 0000000020000080 RDI: 0000000020000040 [ 53.806520] RBP: 00000000006dac20 R08: 0000000020000140 R09: 0000000000000000 [ 53.813775] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac2c [ 53.821039] R13: 0030656c69662f2e R14: 6c2f3a5d3a3a645b R15: 00000000006dad2c [ 53.829550] Kernel Offset: disabled [ 53.833178] Rebooting in 86400 seconds..