[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1[ 33.699853] kauditd_printk_skb: 9 callbacks suppressed [ 33.699873] audit: type=1800 audit(1543902522.077:33): pid=5997 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 G[ ok 8[?25h[?0c[ 33.729448] audit: type=1800 audit(1543902522.077:34): pid=5997 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 . Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 37.169682] audit: type=1400 audit(1543902525.547:35): avc: denied { map } for pid=6174 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.54' (ECDSA) to the list of known hosts. executing program [ 43.909084] audit: type=1400 audit(1543902532.287:36): avc: denied { map } for pid=6188 comm="syz-executor454" path="/root/syz-executor454079343" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 43.941532] libceph: connect [d::]:6789 error -101 [ 43.946630] libceph: mon0 [d::]:6789 connect error [ 43.952514] WARNING: CPU: 0 PID: 6190 at net/ceph/messenger.c:3086 clear_standby+0x12f/0x160 [ 43.961134] Kernel panic - not syncing: panic_on_warn set ... [ 43.967029] CPU: 0 PID: 6190 Comm: syz-executor454 Not tainted 4.20.0-rc5+ #142 [ 43.974457] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.983798] Call Trace: [ 43.986379] dump_stack+0x244/0x39d [ 43.989998] ? dump_stack_print_info.cold.1+0x20/0x20 [ 43.995200] panic+0x2ad/0x55c [ 43.998393] ? add_taint.cold.5+0x16/0x16 [ 44.002539] ? __warn.cold.8+0x5/0x45 [ 44.006339] ? __warn+0xe8/0x1d0 [ 44.009694] ? clear_standby+0x12f/0x160 [ 44.013750] __warn.cold.8+0x20/0x45 [ 44.017462] ? rcu_softirq_qs+0x20/0x20 [ 44.021432] ? clear_standby+0x12f/0x160 [ 44.025509] report_bug+0x254/0x2d0 [ 44.029128] do_error_trap+0x11b/0x200 [ 44.033035] do_invalid_op+0x36/0x40 [ 44.036768] ? clear_standby+0x12f/0x160 [ 44.040829] invalid_op+0x14/0x20 [ 44.044269] RIP: 0010:clear_standby+0x12f/0x160 [ 44.048922] Code: de e8 35 49 c6 f9 48 85 db 0f 84 39 ff ff ff e8 f7 47 c6 f9 0f 0b e9 2d ff ff ff e8 eb a0 09 fa e9 67 ff ff ff e8 e1 47 c6 f9 <0f> 0b eb a5 e8 f8 a0 09 fa e9 f6 fe ff ff 4c 89 ef e8 eb a0 09 fa [ 44.067833] RSP: 0018:ffff8881bcf6f640 EFLAGS: 00010293 [ 44.073186] RAX: ffff8881d47d8140 RBX: ffff8881ce6185e8 RCX: ffffffff87b95383 [ 44.080443] RDX: 0000000000000000 RSI: ffffffff87b953df RDI: 0000000000000007 [ 44.087700] RBP: ffff8881bcf6f658 R08: ffff8881d47d8140 R09: ffffed1039cc30ed [ 44.094960] R10: ffff8881bcf6f658 R11: ffff8881ce61876f R12: 0000000000000001 [ 44.102219] R13: ffff8881ce618720 R14: ffff8881ceea6bc0 R15: ffff8881bcf6f728 [ 44.109492] ? clear_standby+0xd3/0x160 [ 44.113455] ? clear_standby+0x12f/0x160 [ 44.117507] ceph_con_send+0x460/0x600 [ 44.121382] ? ceph_msg_new+0x40/0x40 [ 44.125172] ? ceph_auth_entity_name_encode+0x120/0x120 [ 44.130527] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 44.136058] __send_prepared_auth_request+0x155/0x1b0 [ 44.141247] __open_session+0x3cd/0x550 [ 44.145225] ceph_monc_open_session+0x193/0x350 [ 44.149880] __ceph_open_session+0xe2/0x810 [ 44.154191] ? __kasan_slab_free+0xcf/0x150 [ 44.158514] ? bdi_register_va+0x49/0x80 [ 44.162568] ? ceph_destroy_client+0x1a0/0x1a0 [ 44.167153] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 44.172678] ? super_setup_bdi_name+0x1a5/0x240 [ 44.177352] ? kill_block_super+0x100/0x100 [ 44.181662] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 44.187196] ceph_mount+0x11c5/0x1b30 [ 44.190987] ? ceph_compare_super+0x520/0x520 [ 44.195492] ? __get_fs_type+0x97/0xc0 [ 44.199368] ? lock_downgrade+0x900/0x900 [ 44.203508] mount_fs+0xae/0x31d [ 44.206890] vfs_kern_mount.part.35+0xdc/0x4f0 [ 44.211472] ? may_umount+0xb0/0xb0 [ 44.215085] ? _raw_read_unlock+0x2c/0x50 [ 44.219228] ? __get_fs_type+0x97/0xc0 [ 44.223112] do_mount+0x581/0x31f0 [ 44.226640] ? lock_downgrade+0x900/0x900 [ 44.230787] ? copy_mount_string+0x40/0x40 [ 44.235015] ? usercopy_warn+0x110/0x110 [ 44.239070] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 44.244598] ? _copy_from_user+0xdf/0x150 [ 44.248739] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 44.254296] ? copy_mount_options+0x315/0x430 [ 44.258783] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 44.264325] ksys_mount+0x12d/0x140 [ 44.267940] __x64_sys_mount+0xbe/0x150 [ 44.271906] do_syscall_64+0x1b9/0x820 [ 44.275781] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 44.281148] ? syscall_return_slowpath+0x5e0/0x5e0 [ 44.286080] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.290926] ? trace_hardirqs_on_caller+0x310/0x310 [ 44.295926] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 44.300929] ? prepare_exit_to_usermode+0x291/0x3b0 [ 44.305965] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.310903] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 44.316076] RIP: 0033:0x4466f9 [ 44.319257] Code: e8 1c 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 2b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 44.338165] RSP: 002b:00007f2fafb5ace8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 44.346089] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 00000000004466f9 [ 44.353342] RDX: 0000000020000100 RSI: 0000000020000080 RDI: 0000000020000040 [ 44.360598] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 44.367852] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 44.375109] R13: 00007ffcbf645e1f R14: 00007f2fafb5b9c0 R15: 00000000006dbd2c [ 44.383515] Kernel Offset: disabled [ 44.387187] Rebooting in 86400 seconds..