[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 84.172206][ T32] audit: type=1800 audit(1572747879.215:25): pid=11835 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 84.195549][ T32] audit: type=1800 audit(1572747879.245:26): pid=11835 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 84.232596][ T32] audit: type=1800 audit(1572747879.265:27): pid=11835 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 '10.128.1.48' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 117.636242][T11986] nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based firewall rule not found. Use the iptables CT target to attach helpers instead. [ 117.892834][ T810] Bluetooth: Error in BCSP hdr checksum [ 118.152940][ T530] Bluetooth: Error in BCSP hdr checksum [ 118.412886][ T810] Bluetooth: Error in BCSP hdr checksum [ 118.672849][ T530] Bluetooth: Error in BCSP hdr checksum [ 118.932903][ T810] Bluetooth: Error in BCSP hdr checksum [ 119.192835][ T530] Bluetooth: Error in BCSP hdr checksum [ 119.452815][ T810] Bluetooth: Error in BCSP hdr checksum [ 119.702505][ T31] Bluetooth: hci0: command 0x1003 tx timeout [ 119.709421][ T530] Bluetooth: Error in BCSP hdr checksum [ 119.962913][ T530] Bluetooth: Error in BCSP hdr checksum [ 120.223032][ T810] Bluetooth: Error in BCSP hdr checksum [ 120.482953][ T810] Bluetooth: Error in BCSP hdr checksum [ 120.742960][ T530] Bluetooth: Error in BCSP hdr checksum [ 121.002903][ T810] Bluetooth: Error in BCSP hdr checksum [ 121.262970][ T810] Bluetooth: Error in BCSP hdr checksum [ 121.522883][ T810] Bluetooth: Error in BCSP hdr checksum [ 121.782519][ T812] Bluetooth: hci0: command 0x1001 tx timeout [ 121.789098][ T530] Bluetooth: Error in BCSP hdr checksum [ 121.794776][ T530] Bluetooth: Error in BCSP hdr checksum [ 122.042895][ T810] Bluetooth: Error in BCSP hdr checksum [ 122.048570][ T810] Bluetooth: Error in BCSP hdr checksum [ 122.302872][ T973] Bluetooth: Error in BCSP hdr checksum [ 122.308553][ T973] Bluetooth: Error in BCSP hdr checksum [ 122.562878][ T810] Bluetooth: Error in BCSP hdr checksum [ 122.568760][ T810] Bluetooth: Error in BCSP hdr checksum [ 123.862564][ T31] Bluetooth: hci0: command 0x1009 tx timeout executing program [ 127.794173][T11989] ===================================================== [ 127.801154][T11989] BUG: KMSAN: uninit-value in __copy_skb_header+0x2bf/0x720 [ 127.808422][T11989] CPU: 0 PID: 11989 Comm: syz-executor450 Not tainted 5.4.0-rc5+ #0 [ 127.816373][T11989] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 127.826418][T11989] Call Trace: [ 127.829745][T11989] dump_stack+0x191/0x1f0 [ 127.834063][T11989] kmsan_report+0x128/0x220 [ 127.838552][T11989] __msan_warning+0x73/0xe0 [ 127.843041][T11989] __copy_skb_header+0x2bf/0x720 [ 127.847966][T11989] __skb_clone+0xa2/0x970 [ 127.852302][T11989] skb_clone+0x402/0x5d0 [ 127.856617][T11989] netlink_broadcast_filtered+0xbec/0x1c10 [ 127.862431][T11989] netlink_broadcast+0xf6/0x110 [ 127.867279][T11989] kobject_uevent_env+0x1c4e/0x27c0 [ 127.872476][T11989] kobject_uevent+0x6f/0x80 [ 127.876963][T11989] device_add+0x25a3/0x2df0 [ 127.881448][T11989] ? device_add+0x1a81/0x2df0 [ 127.886119][T11989] hci_register_dev+0x61a/0xfd0 [ 127.890963][T11989] hci_uart_tty_ioctl+0xe61/0x1140 [ 127.896061][T11989] ? hci_uart_tty_write+0x30/0x30 [ 127.901066][T11989] tty_ioctl+0x23e2/0x3100 [ 127.905477][T11989] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 127.911351][T11989] ? tty_do_resize+0x230/0x230 [ 127.916095][T11989] do_vfs_ioctl+0xea8/0x2c50 [ 127.920694][T11989] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 127.926696][T11989] ? security_file_ioctl+0x1bd/0x200 [ 127.931967][T11989] __se_sys_ioctl+0x1da/0x270 [ 127.936632][T11989] __x64_sys_ioctl+0x4a/0x70 [ 127.941219][T11989] do_syscall_64+0xb6/0x160 [ 127.945732][T11989] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 127.951703][T11989] RIP: 0033:0x4412f9 [ 127.955580][T11989] Code: e8 fc 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 9b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 127.975165][T11989] RSP: 002b:00007ffd6393cca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 127.983556][T11989] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412f9 [ 127.991515][T11989] RDX: 0000000000000001 RSI: 00000000400455c8 RDI: 0000000000000003 [ 127.999476][T11989] RBP: 000000000001cbad R08: 00000009004002c8 R09: 00000009004002c8 [ 128.007434][T11989] R10: 00000009004002c8 R11: 0000000000000246 R12: 0000000000402120 [ 128.015388][T11989] R13: 00000000004021b0 R14: 0000000000000000 R15: 0000000000000000 [ 128.023363][T11989] [ 128.025683][T11989] Uninit was created at: [ 128.030014][T11989] kmsan_internal_poison_shadow+0x60/0x120 [ 128.035816][T11989] kmsan_slab_alloc+0xaa/0x120 [ 128.040578][T11989] kmem_cache_alloc+0x8d9/0xd20 [ 128.045514][T11989] skb_clone+0x326/0x5d0 [ 128.049765][T11989] netlink_broadcast_filtered+0xbec/0x1c10 [ 128.055561][T11989] netlink_broadcast+0xf6/0x110 [ 128.060397][T11989] kobject_uevent_env+0x1c4e/0x27c0 [ 128.065606][T11989] kobject_uevent+0x6f/0x80 [ 128.070095][T11989] device_add+0x25a3/0x2df0 [ 128.074584][T11989] hci_register_dev+0x61a/0xfd0 [ 128.079419][T11989] hci_uart_tty_ioctl+0xe61/0x1140 [ 128.084515][T11989] tty_ioctl+0x23e2/0x3100 [ 128.088922][T11989] do_vfs_ioctl+0xea8/0x2c50 [ 128.093502][T11989] __se_sys_ioctl+0x1da/0x270 [ 128.098158][T11989] __x64_sys_ioctl+0x4a/0x70 [ 128.102730][T11989] do_syscall_64+0xb6/0x160 [ 128.107226][T11989] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 128.113295][T11989] ===================================================== [ 128.120207][T11989] Disabling lock debugging due to kernel taint [ 128.126337][T11989] Kernel panic - not syncing: panic_on_warn set ... [ 128.132908][T11989] CPU: 0 PID: 11989 Comm: syz-executor450 Tainted: G B 5.4.0-rc5+ #0 [ 128.142245][T11989] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 128.152305][T11989] Call Trace: [ 128.155589][T11989] dump_stack+0x191/0x1f0 [ 128.159904][T11989] panic+0x3c9/0xc1e [ 128.163800][T11989] kmsan_report+0x215/0x220 [ 128.168286][T11989] __msan_warning+0x73/0xe0 [ 128.172784][T11989] __copy_skb_header+0x2bf/0x720 [ 128.177705][T11989] __skb_clone+0xa2/0x970 [ 128.182047][T11989] skb_clone+0x402/0x5d0 [ 128.186291][T11989] netlink_broadcast_filtered+0xbec/0x1c10 [ 128.192110][T11989] netlink_broadcast+0xf6/0x110 [ 128.196960][T11989] kobject_uevent_env+0x1c4e/0x27c0 [ 128.202249][T11989] kobject_uevent+0x6f/0x80 [ 128.206749][T11989] device_add+0x25a3/0x2df0 [ 128.211285][T11989] ? device_add+0x1a81/0x2df0 [ 128.215960][T11989] hci_register_dev+0x61a/0xfd0 [ 128.220806][T11989] hci_uart_tty_ioctl+0xe61/0x1140 [ 128.225909][T11989] ? hci_uart_tty_write+0x30/0x30 [ 128.230918][T11989] tty_ioctl+0x23e2/0x3100 [ 128.235338][T11989] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 128.241212][T11989] ? tty_do_resize+0x230/0x230 [ 128.245957][T11989] do_vfs_ioctl+0xea8/0x2c50 [ 128.250528][T11989] ? kmsan_get_shadow_origin_ptr+0x91/0x4b0 [ 128.256412][T11989] ? security_file_ioctl+0x1bd/0x200 [ 128.261710][T11989] __se_sys_ioctl+0x1da/0x270 [ 128.266371][T11989] __x64_sys_ioctl+0x4a/0x70 [ 128.270946][T11989] do_syscall_64+0xb6/0x160 [ 128.275433][T11989] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 128.281330][T11989] RIP: 0033:0x4412f9 [ 128.285218][T11989] Code: e8 fc 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 9b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 128.304828][T11989] RSP: 002b:00007ffd6393cca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 128.313240][T11989] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412f9 [ 128.321194][T11989] RDX: 0000000000000001 RSI: 00000000400455c8 RDI: 0000000000000003 [ 128.329169][T11989] RBP: 000000000001cbad R08: 00000009004002c8 R09: 00000009004002c8 [ 128.337210][T11989] R10: 00000009004002c8 R11: 0000000000000246 R12: 0000000000402120 [ 128.345164][T11989] R13: 00000000004021b0 R14: 0000000000000000 R15: 0000000000000000 [ 128.354759][T11989] Kernel Offset: disabled [ 128.359122][T11989] Rebooting in 86400 seconds..