[....] 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. [ 27.039912] kauditd_printk_skb: 8 callbacks suppressed [ 27.039924] audit: type=1800 audit(1539633505.638:29): pid=5446 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 [ 27.074263] audit: type=1800 audit(1539633505.638:30): pid=5446 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 '10.128.0.62' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 43.532109] libceph: connect [d::]:6789 error -101 [ 43.537226] libceph: mon0 [d::]:6789 connect error [ 44.518105] libceph: connect [d::]:6789 error -101 [ 44.523114] libceph: mon0 [d::]:6789 connect error [ 45.477729] libceph: connect [d::]:6789 error -101 [ 45.482750] libceph: mon0 [d::]:6789 connect error [ 46.438108] libceph: connect [d::]:6789 error -101 [ 46.443123] libceph: mon0 [d::]:6789 connect error [ 47.477766] libceph: connect [d::]:6789 error -101 [ 47.482989] libceph: mon0 [d::]:6789 connect error [ 48.437726] libceph: connect [d::]:6789 error -101 [ 48.442912] libceph: mon0 [d::]:6789 connect error executing program [ 48.536880] libceph: connect [d::]:6789 error -101 [ 48.541982] libceph: mon0 [d::]:6789 connect error [ 48.547454] WARNING: CPU: 0 PID: 5605 at net/ceph/messenger.c:3101 clear_standby+0x12f/0x160 [ 48.556116] Kernel panic - not syncing: panic_on_warn set ... [ 48.561996] CPU: 0 PID: 5605 Comm: syz-executor635 Not tainted 4.19.0-rc7-next-20181015+ #94 [ 48.570568] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.579906] Call Trace: [ 48.582503] dump_stack+0x244/0x39d [ 48.586120] ? dump_stack_print_info.cold.1+0x20/0x20 [ 48.591321] panic+0x2ad/0x55c [ 48.594522] ? add_taint.cold.5+0x16/0x16 [ 48.598662] ? __warn.cold.8+0x5/0x45 [ 48.602449] ? __warn+0xe8/0x1d0 [ 48.605804] ? clear_standby+0x12f/0x160 [ 48.609854] __warn.cold.8+0x20/0x45 [ 48.613559] ? rcu_softirq_qs+0x20/0x20 [ 48.617531] ? clear_standby+0x12f/0x160 [ 48.621584] report_bug+0x254/0x2d0 [ 48.625200] do_error_trap+0x11b/0x200 [ 48.629095] do_invalid_op+0x36/0x40 [ 48.632813] ? clear_standby+0x12f/0x160 [ 48.636861] invalid_op+0x14/0x20 [ 48.640335] RIP: 0010:clear_standby+0x12f/0x160 [ 48.645011] Code: de e8 45 05 e3 f9 48 85 db 0f 84 39 ff ff ff e8 07 04 e3 f9 0f 0b e9 2d ff ff ff e8 fb ba 27 fa e9 67 ff ff ff e8 f1 03 e3 f9 <0f> 0b eb a5 e8 08 bb 27 fa e9 f6 fe ff ff 4c 89 ef e8 fb ba 27 fa [ 48.663901] RSP: 0018:ffff8801bb367700 EFLAGS: 00010293 [ 48.669248] RAX: ffff8801b748c340 RBX: ffff8801bb2bdfa8 RCX: ffffffff879b1ef3 [ 48.676503] RDX: 0000000000000000 RSI: ffffffff879b1f4f RDI: 0000000000000007 [ 48.683766] RBP: ffff8801bb367718 R08: ffff8801b748c340 R09: ffffed0037657c25 [ 48.691038] R10: ffff8801bb367718 R11: ffff8801bb2be12f R12: 0000000000000001 [ 48.698293] R13: ffff8801bb2be0e0 R14: ffff8801d80cdb90 R15: ffff8801bb3677e8 [ 48.705567] ? clear_standby+0xd3/0x160 [ 48.709546] ? clear_standby+0x12f/0x160 [ 48.713598] ceph_con_send+0x460/0x600 [ 48.717482] ? ceph_con_workfn+0x96f0/0x96f0 [ 48.721926] ? ceph_auth_entity_name_encode+0x120/0x120 [ 48.727283] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 48.732826] __send_prepared_auth_request+0x155/0x1b0 [ 48.738015] __open_session+0x3cd/0x550 [ 48.742016] ceph_monc_open_session+0x193/0x350 [ 48.746691] __ceph_open_session+0xe2/0x810 [ 48.751018] ? bdi_register_va+0x49/0x80 [ 48.755065] ? ceph_destroy_client+0x1a0/0x1a0 [ 48.759634] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.765160] ? super_setup_bdi_name+0x1a5/0x240 [ 48.769817] ? kill_block_super+0x100/0x100 [ 48.774128] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.779672] ceph_mount+0x11c5/0x1b30 [ 48.783465] ? ceph_compare_super+0x520/0x520 [ 48.787951] ? rcu_pm_notify+0xc0/0xc0 [ 48.791843] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 48.797370] ? alloc_pages_current+0x17b/0x350 [ 48.801952] ? ceph_compare_super+0x520/0x520 [ 48.806439] legacy_get_tree+0x131/0x460 [ 48.810489] vfs_get_tree+0x1cb/0x5c0 [ 48.814279] ? legacy_fs_context_dup+0x1d0/0x1d0 [ 48.819023] do_mount+0x70c/0x1d90 [ 48.822555] ? rcu_lockdep_current_cpu_online+0x1a4/0x210 [ 48.828080] ? copy_mount_string+0x40/0x40 [ 48.832300] ? copy_mount_options+0x5f/0x430 [ 48.836710] ? kmem_cache_alloc_trace+0x353/0x750 [ 48.841545] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.847075] ? copy_mount_options+0x315/0x430 [ 48.851558] ksys_mount+0x12d/0x140 [ 48.855172] __x64_sys_mount+0xbe/0x150 [ 48.859138] do_syscall_64+0x1b9/0x820 [ 48.863017] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 48.868370] ? syscall_return_slowpath+0x5e0/0x5e0 [ 48.873295] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.878148] ? trace_hardirqs_on_caller+0x310/0x310 [ 48.883161] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 48.888197] ? prepare_exit_to_usermode+0x291/0x3b0 [ 48.893201] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.898037] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.903226] RIP: 0033:0x440d49 [ 48.906406] 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 [ 48.925291] RSP: 002b:00007fff6b2dd6d8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 48.932989] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 0000000000440d49 [ 48.940244] RDX: 0000000020000100 RSI: 0000000020000080 RDI: 0000000020000040 [ 48.947510] RBP: 0000000000000000 R08: 0000000020000140 R09: 00000009004002c8 [ 48.954780] R10: 0000000000000000 R11: 0000000000000286 R12: 000000000000a9f2 [ 48.962037] R13: 0000000000401d20 R14: 0000000000000000 R15: 0000000000000000 [ 48.970330] Kernel Offset: disabled [ 48.974011] Rebooting in 86400 seconds..