[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 65.620441][ T26] audit: type=1800 audit(1567883476.681:25): pid=8492 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 65.641732][ T26] audit: type=1800 audit(1567883476.691:26): pid=8492 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 65.663501][ T26] audit: type=1800 audit(1567883476.691:27): pid=8492 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 '10.128.1.38' (ECDSA) to the list of known hosts. 2019/09/07 19:11:46 parsed 1 programs 2019/09/07 19:11:47 executed programs: 0 syzkaller login: [ 96.703958][ T8661] IPVS: ftp: loaded support on port[0] = 21 [ 96.766275][ T8661] chnl_net:caif_netlink_parms(): no params data found [ 96.791563][ T8661] bridge0: port 1(bridge_slave_0) entered blocking state [ 96.799466][ T8661] bridge0: port 1(bridge_slave_0) entered disabled state [ 96.807102][ T8661] device bridge_slave_0 entered promiscuous mode [ 96.814998][ T8661] bridge0: port 2(bridge_slave_1) entered blocking state [ 96.822816][ T8661] bridge0: port 2(bridge_slave_1) entered disabled state [ 96.830355][ T8661] device bridge_slave_1 entered promiscuous mode [ 96.848222][ T8661] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 96.858733][ T8661] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 96.877420][ T8661] team0: Port device team_slave_0 added [ 96.884511][ T8661] team0: Port device team_slave_1 added [ 96.954541][ T8661] device hsr_slave_0 entered promiscuous mode [ 97.022246][ T8661] device hsr_slave_1 entered promiscuous mode [ 97.080018][ T8661] bridge0: port 2(bridge_slave_1) entered blocking state [ 97.087203][ T8661] bridge0: port 2(bridge_slave_1) entered forwarding state [ 97.094992][ T8661] bridge0: port 1(bridge_slave_0) entered blocking state [ 97.102081][ T8661] bridge0: port 1(bridge_slave_0) entered forwarding state [ 97.135308][ T8661] 8021q: adding VLAN 0 to HW filter on device bond0 [ 97.147148][ T3750] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 97.167070][ T3750] bridge0: port 1(bridge_slave_0) entered disabled state [ 97.175217][ T3750] bridge0: port 2(bridge_slave_1) entered disabled state [ 97.184215][ T3750] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 97.195257][ T8661] 8021q: adding VLAN 0 to HW filter on device team0 [ 97.206328][ T2994] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 97.214915][ T2994] bridge0: port 1(bridge_slave_0) entered blocking state [ 97.222002][ T2994] bridge0: port 1(bridge_slave_0) entered forwarding state [ 97.243035][ T3750] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 97.251612][ T3750] bridge0: port 2(bridge_slave_1) entered blocking state [ 97.258697][ T3750] bridge0: port 2(bridge_slave_1) entered forwarding state [ 97.266610][ T3750] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 97.275092][ T3750] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 97.283375][ T3750] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 97.295020][ T8663] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 97.302846][ T8663] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 97.312894][ T8661] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 97.329895][ T8661] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 98.881199][ T8892] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 98.889034][ T8892] #PF: supervisor instruction fetch in kernel mode [ 98.895511][ T8892] #PF: error_code(0x0010) - not-present page [ 98.901470][ T8892] PGD a3a47067 P4D a3a47067 PUD 836cc067 PMD 0 [ 98.907703][ T8892] Oops: 0010 [#1] PREEMPT SMP KASAN [ 98.912894][ T8892] CPU: 0 PID: 8892 Comm: syz-executor.0 Not tainted 5.3.0-rc6-next-20190830 #75 [ 98.921898][ T8892] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 98.931944][ T8892] RIP: 0010:0x0 [ 98.935400][ T8892] Code: Bad RIP value. [ 98.939442][ T8892] RSP: 0018:ffff8880a399f4d8 EFLAGS: 00010246 [ 98.945491][ T8892] RAX: dffffc0000000000 RBX: ffffffff884a25a0 RCX: ffffffff85b92086 [ 98.953441][ T8892] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880a86d8000 [ 98.961389][ T8892] RBP: ffff8880a399f5d0 R08: ffff888091fa4280 R09: ffff8880a399f658 [ 98.969338][ T8892] R10: ffffed1014733ed9 R11: ffff8880a399f6cf R12: ffff8880a86d8000 [ 98.977347][ T8892] R13: 0000000000000001 R14: ffff8880a399f5a8 R15: ffffffff884a25a0 [ 98.985299][ T8892] FS: 00007ffa12ea4700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 98.994203][ T8892] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 99.000761][ T8892] CR2: ffffffffffffffd6 CR3: 00000000a7505000 CR4: 00000000001406f0 [ 99.008713][ T8892] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 99.016661][ T8892] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 99.024788][ T8892] Call Trace: [ 99.028063][ T8892] tc_bind_tclass+0x13e/0x2f0 [ 99.032726][ T8892] ? qdisc_class_hash_init+0x110/0x110 [ 99.038166][ T8892] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 99.044381][ T8892] ? ns_capable_common+0x93/0x100 [ 99.049383][ T8892] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 99.055079][ T8892] ? qdisc_match_from_root+0x18a/0x280 [ 99.060513][ T8892] tc_ctl_tclass+0xadb/0xcd0 [ 99.065085][ T8892] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 99.070871][ T8892] ? rtnetlink_rcv_msg+0x3d0/0xb00 [ 99.075967][ T8892] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 99.082183][ T8892] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 99.087968][ T8892] rtnetlink_rcv_msg+0x463/0xb00 [ 99.092881][ T8892] ? rtnetlink_put_metrics+0x590/0x590 [ 99.098316][ T8892] ? netlink_deliver_tap+0x22d/0xbf0 [ 99.103579][ T8892] ? find_held_lock+0x35/0x130 [ 99.108323][ T8892] netlink_rcv_skb+0x177/0x450 [ 99.113079][ T8892] ? rtnetlink_put_metrics+0x590/0x590 [ 99.118514][ T8892] ? netlink_ack+0xb50/0xb50 [ 99.123098][ T8892] ? __kasan_check_read+0x11/0x20 [ 99.128099][ T8892] ? netlink_deliver_tap+0x254/0xbf0 [ 99.133360][ T8892] rtnetlink_rcv+0x1d/0x30 [ 99.137755][ T8892] netlink_unicast+0x531/0x710 [ 99.142501][ T8892] ? netlink_attachskb+0x7c0/0x7c0 [ 99.147597][ T8892] ? _copy_from_iter_full+0x25d/0x8c0 [ 99.152957][ T8892] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 99.158655][ T8892] ? __check_object_size+0x3d/0x437 [ 99.163845][ T8892] netlink_sendmsg+0x8a5/0xd60 [ 99.168588][ T8892] ? netlink_unicast+0x710/0x710 [ 99.173503][ T8892] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 99.179025][ T8892] ? apparmor_socket_sendmsg+0x2a/0x30 [ 99.184462][ T8892] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 99.190695][ T8892] ? security_socket_sendmsg+0x8d/0xc0 [ 99.196143][ T8892] ? netlink_unicast+0x710/0x710 [ 99.201068][ T8892] sock_sendmsg+0xd7/0x130 [ 99.205464][ T8892] ___sys_sendmsg+0x803/0x920 [ 99.210140][ T8892] ? copy_msghdr_from_user+0x440/0x440 [ 99.215597][ T8892] ? __kasan_check_read+0x11/0x20 [ 99.220603][ T8892] ? __fget+0x384/0x560 [ 99.224764][ T8892] ? ksys_dup3+0x3e0/0x3e0 [ 99.229172][ T8892] ? __fget_light+0x1a9/0x230 [ 99.233837][ T8892] ? __fdget+0x1b/0x20 [ 99.237895][ T8892] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 99.244124][ T8892] __sys_sendmsg+0x105/0x1d0 [ 99.248696][ T8892] ? __sys_sendmsg_sock+0xd0/0xd0 [ 99.253707][ T8892] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 99.259143][ T8892] ? do_syscall_64+0x26/0x760 [ 99.263801][ T8892] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 99.269850][ T8892] ? do_syscall_64+0x26/0x760 [ 99.274519][ T8892] __x64_sys_sendmsg+0x78/0xb0 [ 99.279270][ T8892] do_syscall_64+0xfa/0x760 [ 99.283755][ T8892] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 99.289622][ T8892] RIP: 0033:0x4598e9 [ 99.293495][ T8892] 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 [ 99.313079][ T8892] RSP: 002b:00007ffa12ea3c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 99.321470][ T8892] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 [ 99.329419][ T8892] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 99.337370][ T8892] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 99.345315][ T8892] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffa12ea46d4 [ 99.353269][ T8892] R13: 00000000004c77fb R14: 00000000004dd098 R15: 00000000ffffffff [ 99.361232][ T8892] Modules linked in: [ 99.365114][ T8892] CR2: 0000000000000000 [ 99.371036][ T8892] ---[ end trace 3b6b899b539be7e7 ]--- [ 99.376712][ T8892] RIP: 0010:0x0 [ 99.380161][ T8892] Code: Bad RIP value. [ 99.384259][ T8892] RSP: 0018:ffff8880a399f4d8 EFLAGS: 00010246 [ 99.390454][ T8892] RAX: dffffc0000000000 RBX: ffffffff884a25a0 RCX: ffffffff85b92086 [ 99.398695][ T8892] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880a86d8000 [ 99.406692][ T8892] RBP: ffff8880a399f5d0 R08: ffff888091fa4280 R09: ffff8880a399f658 [ 99.414673][ T8892] R10: ffffed1014733ed9 R11: ffff8880a399f6cf R12: ffff8880a86d8000 [ 99.422650][ T8892] R13: 0000000000000001 R14: ffff8880a399f5a8 R15: ffffffff884a25a0 [ 99.430599][ T8892] FS: 00007ffa12ea4700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 99.439529][ T8892] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 99.446114][ T8892] CR2: ffffffffffffffd6 CR3: 00000000a7505000 CR4: 00000000001406f0 [ 99.454425][ T8892] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 99.462472][ T8892] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 99.470434][ T8892] Kernel panic - not syncing: Fatal exception [ 99.477885][ T8892] Kernel Offset: disabled [ 99.482202][ T8892] Rebooting in 86400 seconds..