[....] 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. [ 66.327526][ T26] kauditd_printk_skb: 7 callbacks suppressed [ 66.327535][ T26] audit: type=1800 audit(1567857005.196:29): pid=9883 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 [ 66.354766][ T26] audit: type=1800 audit(1567857005.196:30): pid=9883 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 '10.128.1.16' (ECDSA) to the list of known hosts. 2019/09/07 11:50:16 parsed 1 programs 2019/09/07 11:50:17 executed programs: 0 syzkaller login: [ 78.340389][T10048] IPVS: ftp: loaded support on port[0] = 21 [ 78.388043][T10048] chnl_net:caif_netlink_parms(): no params data found [ 78.411576][T10048] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.419317][T10048] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.427169][T10048] device bridge_slave_0 entered promiscuous mode [ 78.434477][T10048] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.441690][T10048] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.449441][T10048] device bridge_slave_1 entered promiscuous mode [ 78.463745][T10048] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 78.474256][T10048] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 78.489851][T10048] team0: Port device team_slave_0 added [ 78.497184][T10048] team0: Port device team_slave_1 added [ 78.533958][T10048] device hsr_slave_0 entered promiscuous mode [ 78.572355][T10048] device hsr_slave_1 entered promiscuous mode [ 78.617637][T10048] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.624857][T10048] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.632235][T10048] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.639620][T10048] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.662642][T10048] 8021q: adding VLAN 0 to HW filter on device bond0 [ 78.674632][T10050] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 78.683656][T10050] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.691153][T10050] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.699750][T10050] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 78.710617][T10048] 8021q: adding VLAN 0 to HW filter on device team0 [ 78.720246][ T3026] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 78.728855][ T3026] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.736239][ T3026] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.752606][T10050] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 78.761422][T10050] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.768823][T10050] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.776969][T10050] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 78.785624][T10050] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 78.794798][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.804447][ T3026] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.815879][T10048] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 78.827774][T10048] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.835903][ T3026] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.850183][T10048] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 79.141511][T10104] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 79.149350][T10104] #PF: supervisor instruction fetch in kernel mode [ 79.156133][T10104] #PF: error_code(0x0010) - not-present page [ 79.162122][T10104] PGD a933a067 P4D a933a067 PUD 8edb5067 PMD 0 [ 79.168369][T10104] Oops: 0010 [#1] PREEMPT SMP KASAN [ 79.173559][T10104] CPU: 0 PID: 10104 Comm: syz-executor.0 Not tainted 5.3.0-rc7+ #0 [ 79.181430][T10104] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.191915][T10104] RIP: 0010:0x0 [ 79.195395][T10104] Code: Bad RIP value. [ 79.199438][T10104] RSP: 0018:ffff8880842674d8 EFLAGS: 00010246 [ 79.205492][T10104] RAX: dffffc0000000000 RBX: ffffffff882a51a0 RCX: ffffffff85b40c56 [ 79.213466][T10104] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88808ecfe980 [ 79.221426][T10104] RBP: ffff8880842675d0 R08: ffff888095770180 R09: ffff888084267658 [ 79.229383][T10104] R10: ffffed101084ced9 R11: ffff8880842676cf R12: ffff88808ecfe980 [ 79.237537][T10104] R13: 0000000000000001 R14: ffff8880842675a8 R15: ffffffff882a51a0 [ 79.245494][T10104] FS: 00007f8dfad6a700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 79.255936][T10104] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.262773][T10104] CR2: ffffffffffffffd6 CR3: 000000008fe7e000 CR4: 00000000001406f0 [ 79.271219][T10104] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 79.279184][T10104] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 79.287324][T10104] Call Trace: [ 79.290615][T10104] tc_bind_tclass+0x13e/0x2f0 [ 79.295283][T10104] ? qdisc_class_hash_init+0x110/0x110 [ 79.300728][T10104] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.307047][T10104] ? ns_capable_common+0x93/0x100 [ 79.312058][T10104] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 79.317864][T10104] ? qdisc_match_from_root+0x18a/0x280 [ 79.323308][T10104] tc_ctl_tclass+0xadb/0xcd0 [ 79.327971][T10104] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 79.333963][T10104] ? rtnetlink_rcv_msg+0x3d0/0xb00 [ 79.339243][T10104] ? rtnetlink_rcv_msg+0x1ea/0xb00 [ 79.344635][T10104] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 79.351384][T10104] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 79.357286][T10104] rtnetlink_rcv_msg+0x463/0xb00 [ 79.362220][T10104] ? rtnetlink_put_metrics+0x580/0x580 [ 79.367675][T10104] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 79.373063][T10104] ? __copy_skb_header+0x250/0x550 [ 79.378159][T10104] netlink_rcv_skb+0x177/0x450 [ 79.382992][T10104] ? rtnetlink_put_metrics+0x580/0x580 [ 79.388435][T10104] ? netlink_ack+0xb30/0xb30 [ 79.393020][T10104] ? netlink_deliver_tap+0x254/0xbf0 [ 79.398386][T10104] rtnetlink_rcv+0x1d/0x30 [ 79.402885][T10104] netlink_unicast+0x531/0x710 [ 79.407896][T10104] ? netlink_attachskb+0x7c0/0x7c0 [ 79.413262][T10104] ? _copy_from_iter_full+0x25d/0x8a0 [ 79.418637][T10104] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 79.424372][T10104] ? __check_object_size+0x3d/0x437 [ 79.429563][T10104] netlink_sendmsg+0x8a5/0xd60 [ 79.434310][T10104] ? netlink_unicast+0x710/0x710 [ 79.439432][T10104] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 79.444994][T10104] ? apparmor_socket_sendmsg+0x2a/0x30 [ 79.450613][T10104] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.457010][T10104] ? security_socket_sendmsg+0x8d/0xc0 [ 79.462462][T10104] ? netlink_unicast+0x710/0x710 [ 79.468058][T10104] sock_sendmsg+0xd7/0x130 [ 79.472539][T10104] ___sys_sendmsg+0x803/0x920 [ 79.477322][T10104] ? copy_msghdr_from_user+0x440/0x440 [ 79.483102][T10104] ? __fget+0xa3/0x560 [ 79.487277][T10104] ? __fget+0x384/0x560 [ 79.491540][T10104] ? ksys_dup3+0x3e0/0x3e0 [ 79.496029][T10104] ? __might_fault+0xfb/0x1e0 [ 79.500688][T10104] ? __fget_light+0x1a9/0x230 [ 79.505358][T10104] ? __fdget+0x1b/0x20 [ 79.509490][T10104] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 79.516006][T10104] __sys_sendmsg+0x105/0x1d0 [ 79.520592][T10104] ? __sys_sendmsg_sock+0xd0/0xd0 [ 79.525614][T10104] ? __x64_sys_clock_gettime+0x16d/0x240 [ 79.531498][T10104] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 79.537684][T10104] __x64_sys_sendmsg+0x78/0xb0 [ 79.542707][T10104] do_syscall_64+0xfd/0x6a0 [ 79.547200][T10104] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 79.553086][T10104] RIP: 0033:0x4598e9 [ 79.557079][T10104] Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 79.577994][T10104] RSP: 002b:00007f8dfad69c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 79.586531][T10104] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 [ 79.594583][T10104] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000004 [ 79.604137][T10104] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 79.612234][T10104] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8dfad6a6d4 [ 79.620208][T10104] R13: 00000000004c77fb R14: 00000000004dd098 R15: 00000000ffffffff [ 79.628430][T10104] Modules linked in: [ 79.632462][T10104] CR2: 0000000000000000 [ 79.638756][T10104] ---[ end trace 1fc506aaeb71af75 ]--- [ 79.644277][T10104] RIP: 0010:0x0 [ 79.647818][T10104] Code: Bad RIP value. [ 79.652053][T10104] RSP: 0018:ffff8880842674d8 EFLAGS: 00010246 [ 79.659294][T10104] RAX: dffffc0000000000 RBX: ffffffff882a51a0 RCX: ffffffff85b40c56 [ 79.668006][T10104] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88808ecfe980 [ 79.677879][T10104] RBP: ffff8880842675d0 R08: ffff888095770180 R09: ffff888084267658 [ 79.687022][T10104] R10: ffffed101084ced9 R11: ffff8880842676cf R12: ffff88808ecfe980 [ 79.695323][T10104] R13: 0000000000000001 R14: ffff8880842675a8 R15: ffffffff882a51a0 [ 79.703746][T10104] FS: 00007f8dfad6a700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 79.713091][T10104] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.720668][T10104] CR2: ffffffffffffffd6 CR3: 000000008fe7e000 CR4: 00000000001406f0 [ 79.729954][T10104] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 79.738145][T10104] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 79.746662][T10104] Kernel panic - not syncing: Fatal exception [ 79.754866][T10104] Kernel Offset: disabled [ 79.760457][T10104] Rebooting in 86400 seconds..