[ 30.011077] audit: type=1800 audit(1542162806.633:27): pid=5890 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 30.029985] audit: type=1800 audit(1542162806.633:28): pid=5890 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 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. [ 30.847655] audit: type=1800 audit(1542162807.533:29): pid=5890 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 30.867834] audit: type=1800 audit(1542162807.533:30): pid=5890 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 '10.128.10.49' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 42.448898] libceph: connect [d::]:6789 error -101 [ 42.454051] libceph: mon0 [d::]:6789 connect error executing program [ 42.555401] libceph: connect [d::]:6789 error -101 [ 42.560529] libceph: mon0 [d::]:6789 connect error [ 42.566284] WARNING: CPU: 0 PID: 6057 at net/ceph/messenger.c:3080 clear_standby+0x12f/0x160 [ 42.574922] Kernel panic - not syncing: panic_on_warn set ... [ 42.580797] CPU: 0 PID: 6057 Comm: syz-executor602 Not tainted 4.20.0-rc2+ #111 [ 42.588227] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.597818] Call Trace: [ 42.600409] dump_stack+0x244/0x39d [ 42.604042] ? dump_stack_print_info.cold.1+0x20/0x20 [ 42.609229] panic+0x2ad/0x55c [ 42.612412] ? add_taint.cold.5+0x16/0x16 [ 42.616552] ? __warn.cold.8+0x5/0x45 [ 42.620342] ? __warn+0xe8/0x1d0 [ 42.623702] ? clear_standby+0x12f/0x160 [ 42.627752] __warn.cold.8+0x20/0x45 [ 42.631451] ? rcu_softirq_qs+0x20/0x20 [ 42.635473] ? clear_standby+0x12f/0x160 [ 42.639526] report_bug+0x254/0x2d0 [ 42.643156] do_error_trap+0x11b/0x200 [ 42.647054] do_invalid_op+0x36/0x40 [ 42.650784] ? clear_standby+0x12f/0x160 [ 42.654835] invalid_op+0x14/0x20 [ 42.658280] RIP: 0010:clear_standby+0x12f/0x160 [ 42.662936] Code: de e8 e5 5c d2 f9 48 85 db 0f 84 39 ff ff ff e8 a7 5b d2 f9 0f 0b e9 2d ff ff ff e8 bb a8 15 fa e9 67 ff ff ff e8 91 5b d2 f9 <0f> 0b eb a5 e8 c8 a8 15 fa e9 f6 fe ff ff 4c 89 ef e8 bb a8 15 fa [ 42.681823] RSP: 0018:ffff8881c1757640 EFLAGS: 00010293 [ 42.687172] RAX: ffff8881c010c080 RBX: ffff8881c03784e8 RCX: ffffffff87ad2bf3 [ 42.694430] RDX: 0000000000000000 RSI: ffffffff87ad2c4f RDI: 0000000000000007 [ 42.701711] RBP: ffff8881c1757658 R08: ffff8881c010c080 R09: ffffed103806f0cd [ 42.708981] R10: ffff8881c1757658 R11: ffff8881c037866f R12: 0000000000000001 [ 42.716236] R13: ffff8881c0378620 R14: ffff8881cc0f1bc0 R15: ffff8881c1757728 [ 42.723507] ? clear_standby+0xd3/0x160 [ 42.727488] ? clear_standby+0x12f/0x160 [ 42.731546] ceph_con_send+0x460/0x600 [ 42.735424] ? ceph_msg_new+0x40/0x40 [ 42.739217] ? ceph_auth_entity_name_encode+0x120/0x120 [ 42.744575] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 42.750113] __send_prepared_auth_request+0x155/0x1b0 [ 42.755299] __open_session+0x3cd/0x550 [ 42.759265] ceph_monc_open_session+0x193/0x350 [ 42.763933] __ceph_open_session+0xe2/0x810 [ 42.768248] ? __kasan_slab_free+0xcf/0x150 [ 42.772561] ? bdi_register_va+0x49/0x80 [ 42.776632] ? ceph_destroy_client+0x1a0/0x1a0 [ 42.781226] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.786756] ? super_setup_bdi_name+0x1a5/0x240 [ 42.791412] ? kill_block_super+0x100/0x100 [ 42.795723] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.801256] ceph_mount+0x11c5/0x1b30 [ 42.805048] ? ceph_compare_super+0x520/0x520 [ 42.809538] ? smack_sb_copy_data+0x27e/0x2d0 [ 42.814044] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.819571] mount_fs+0xae/0x31d [ 42.822930] vfs_kern_mount.part.35+0xdc/0x4f0 [ 42.827504] ? may_umount+0xb0/0xb0 [ 42.831157] ? _raw_read_unlock+0x2c/0x50 [ 42.835308] ? __get_fs_type+0x97/0xc0 [ 42.839188] do_mount+0x581/0x31f0 [ 42.842720] ? check_preemption_disabled+0x48/0x280 [ 42.847728] ? copy_mount_string+0x40/0x40 [ 42.851979] ? copy_mount_options+0x5f/0x430 [ 42.856378] ? rcu_read_lock_sched_held+0x14f/0x180 [ 42.861402] ? kmem_cache_alloc_trace+0x353/0x750 [ 42.866243] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.871769] ? copy_mount_options+0x315/0x430 [ 42.876255] ksys_mount+0x12d/0x140 [ 42.879874] __x64_sys_mount+0xbe/0x150 [ 42.883855] do_syscall_64+0x1b9/0x820 [ 42.887733] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 42.893087] ? syscall_return_slowpath+0x5e0/0x5e0 [ 42.898012] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.902845] ? trace_hardirqs_on_caller+0x310/0x310 [ 42.907850] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 42.912858] ? prepare_exit_to_usermode+0x291/0x3b0 [ 42.917867] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.922717] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.927909] RIP: 0033:0x44b559 [ 42.931091] Code: e8 6c b4 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 4b cd fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 42.950011] RSP: 002b:00007ff073d21d88 EFLAGS: 00000293 ORIG_RAX: 00000000000000a5 [ 42.957707] RAX: ffffffffffffffda RBX: 00000000006dccc8 RCX: 000000000044b559 [ 42.964965] RDX: 0000000020000100 RSI: 0000000020000080 RDI: 0000000020000040 [ 42.972228] RBP: 00000000006dccc0 R08: 0000000020000140 R09: 0000000000000000 [ 42.979488] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 42.986850] R13: 00007ffebd4dfc8f R14: 00007ff073d229c0 R15: 00000000006dcdcc [ 42.995118] Kernel Offset: disabled [ 42.998797] Rebooting in 86400 seconds..