[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [ 60.374695][ T23] audit: type=1800 audit(1567852594.864:25): pid=8648 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 60.415682][ T23] audit: type=1800 audit(1567852594.864:26): pid=8648 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 60.469859][ T23] audit: type=1800 audit(1567852594.864:27): pid=8648 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[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.41' (ECDSA) to the list of known hosts. 2019/09/07 10:36:46 parsed 1 programs 2019/09/07 10:36:47 executed programs: 0 syzkaller login: [ 73.061751][ T8817] IPVS: ftp: loaded support on port[0] = 21 [ 73.122049][ T8817] chnl_net:caif_netlink_parms(): no params data found [ 73.150965][ T8817] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.158742][ T8817] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.166689][ T8817] device bridge_slave_0 entered promiscuous mode [ 73.174589][ T8817] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.181828][ T8817] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.189508][ T8817] device bridge_slave_1 entered promiscuous mode [ 73.205408][ T8817] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 73.216446][ T8817] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 73.234163][ T8817] team0: Port device team_slave_0 added [ 73.241513][ T8817] team0: Port device team_slave_1 added [ 73.307661][ T8817] device hsr_slave_0 entered promiscuous mode [ 73.375991][ T8817] device hsr_slave_1 entered promiscuous mode [ 73.444085][ T8817] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.452007][ T8817] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.459970][ T8817] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.467101][ T8817] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.500192][ T8817] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.513177][ T103] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 73.534117][ T103] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.542531][ T103] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.552179][ T103] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 73.563848][ T8817] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.574818][ T2815] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 73.583857][ T2815] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.591089][ T2815] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.616216][ T8817] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 73.626857][ T8817] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 73.640055][ T103] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 73.648683][ T103] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.655788][ T103] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.664513][ T103] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 73.673352][ T103] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 73.681731][ T103] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 73.690400][ T103] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 73.703843][ T103] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 73.711628][ T103] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 73.724408][ T8817] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.982285][ T8852] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 73.990123][ T8852] #PF: supervisor instruction fetch in kernel mode [ 73.996838][ T8852] #PF: error_code(0x0010) - not-present page [ 74.003906][ T8852] PGD a676c067 P4D a676c067 PUD 8cd1c067 PMD 0 [ 74.010432][ T8852] Oops: 0010 [#1] PREEMPT SMP KASAN [ 74.015638][ T8852] CPU: 0 PID: 8852 Comm: syz-executor.0 Not tainted 5.3.0-rc7+ #0 [ 74.023953][ T8852] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.034252][ T8852] RIP: 0010:0x0 [ 74.037813][ T8852] Code: Bad RIP value. [ 74.041883][ T8852] RSP: 0018:ffff88809cabf4d8 EFLAGS: 00010246 [ 74.048907][ T8852] RAX: dffffc0000000000 RBX: ffffffff884a7760 RCX: ffffffff85b57066 [ 74.056888][ T8852] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88809708c300 [ 74.064865][ T8852] RBP: ffff88809cabf5d0 R08: ffff88809f9a2500 R09: ffff88809cabf658 [ 74.073113][ T8852] R10: ffffed1013957ed9 R11: ffff88809cabf6cf R12: ffff88809708c300 [ 74.082568][ T8852] R13: 0000000000000001 R14: ffff88809cabf5a8 R15: ffffffff884a7760 [ 74.091446][ T8852] FS: 00007f6777281700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 74.100386][ T8852] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.107593][ T8852] CR2: ffffffffffffffd6 CR3: 00000000a57c7000 CR4: 00000000001406f0 [ 74.115622][ T8852] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.124218][ T8852] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.132598][ T8852] Call Trace: [ 74.135913][ T8852] tc_bind_tclass+0x13e/0x2f0 [ 74.141520][ T8852] ? qdisc_class_hash_init+0x110/0x110 [ 74.146973][ T8852] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 74.153290][ T8852] ? ns_capable_common+0x93/0x100 [ 74.158308][ T8852] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 74.164533][ T8852] ? qdisc_match_from_root+0x18a/0x280 [ 74.169994][ T8852] tc_ctl_tclass+0xadb/0xcd0 [ 74.174705][ T8852] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 74.180511][ T8852] ? rtnetlink_rcv_msg+0x3d0/0xb00 [ 74.185632][ T8852] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 74.191870][ T8852] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 74.197678][ T8852] rtnetlink_rcv_msg+0x463/0xb00 [ 74.202745][ T8852] ? rtnetlink_put_metrics+0x580/0x580 [ 74.208287][ T8852] ? netlink_deliver_tap+0x22d/0xbf0 [ 74.213570][ T8852] ? find_held_lock+0x35/0x130 [ 74.218512][ T8852] netlink_rcv_skb+0x177/0x450 [ 74.223365][ T8852] ? rtnetlink_put_metrics+0x580/0x580 [ 74.228828][ T8852] ? netlink_ack+0xb30/0xb30 [ 74.233416][ T8852] ? __kasan_check_read+0x11/0x20 [ 74.238444][ T8852] ? netlink_deliver_tap+0x254/0xbf0 [ 74.243891][ T8852] rtnetlink_rcv+0x1d/0x30 [ 74.248292][ T8852] netlink_unicast+0x531/0x710 [ 74.253049][ T8852] ? netlink_attachskb+0x7c0/0x7c0 [ 74.258153][ T8852] ? _copy_from_iter_full+0x25d/0x8a0 [ 74.263697][ T8852] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 74.269424][ T8852] ? __check_object_size+0x3d/0x437 [ 74.274647][ T8852] netlink_sendmsg+0x8a5/0xd60 [ 74.279405][ T8852] ? netlink_unicast+0x710/0x710 [ 74.284345][ T8852] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 74.290141][ T8852] ? apparmor_socket_sendmsg+0x2a/0x30 [ 74.295600][ T8852] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 74.302024][ T8852] ? security_socket_sendmsg+0x8d/0xc0 [ 74.307473][ T8852] ? netlink_unicast+0x710/0x710 [ 74.312398][ T8852] sock_sendmsg+0xd7/0x130 [ 74.316833][ T8852] ___sys_sendmsg+0x803/0x920 [ 74.321538][ T8852] ? copy_msghdr_from_user+0x440/0x440 [ 74.327178][ T8852] ? __kasan_check_read+0x11/0x20 [ 74.332186][ T8852] ? __fget+0x384/0x560 [ 74.336423][ T8852] ? ksys_dup3+0x3e0/0x3e0 [ 74.340828][ T8852] ? __fget_light+0x1a9/0x230 [ 74.345483][ T8852] ? __fdget+0x1b/0x20 [ 74.349618][ T8852] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 74.355905][ T8852] __sys_sendmsg+0x105/0x1d0 [ 74.361355][ T8852] ? __sys_sendmsg_sock+0xd0/0xd0 [ 74.366556][ T8852] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 74.372228][ T8852] ? do_syscall_64+0x26/0x6a0 [ 74.376894][ T8852] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 74.383033][ T8852] ? do_syscall_64+0x26/0x6a0 [ 74.388499][ T8852] __x64_sys_sendmsg+0x78/0xb0 [ 74.393256][ T8852] do_syscall_64+0xfd/0x6a0 [ 74.397748][ T8852] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 74.404077][ T8852] RIP: 0033:0x4598e9 [ 74.407973][ T8852] 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 [ 74.427611][ T8852] RSP: 002b:00007f6777280c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 74.436010][ T8852] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 [ 74.443998][ T8852] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000004 [ 74.451949][ T8852] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 74.459907][ T8852] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f67772816d4 [ 74.467870][ T8852] R13: 00000000004c77fb R14: 00000000004dd098 R15: 00000000ffffffff [ 74.475923][ T8852] Modules linked in: [ 74.479807][ T8852] CR2: 0000000000000000 [ 74.485928][ T8852] ---[ end trace c4eb93499a760cdb ]--- [ 74.491711][ T8852] RIP: 0010:0x0 [ 74.495170][ T8852] Code: Bad RIP value. [ 74.499983][ T8852] RSP: 0018:ffff88809cabf4d8 EFLAGS: 00010246 [ 74.506093][ T8852] RAX: dffffc0000000000 RBX: ffffffff884a7760 RCX: ffffffff85b57066 [ 74.514942][ T8852] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88809708c300 [ 74.523324][ T8852] RBP: ffff88809cabf5d0 R08: ffff88809f9a2500 R09: ffff88809cabf658 [ 74.532636][ T8852] R10: ffffed1013957ed9 R11: ffff88809cabf6cf R12: ffff88809708c300 [ 74.540791][ T8852] R13: 0000000000000001 R14: ffff88809cabf5a8 R15: ffffffff884a7760 [ 74.548845][ T8852] FS: 00007f6777281700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 74.561033][ T8852] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.567669][ T8852] CR2: ffffffffffffffd6 CR3: 00000000a57c7000 CR4: 00000000001406e0 [ 74.575680][ T8852] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.584757][ T8852] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.592859][ T8852] Kernel panic - not syncing: Fatal exception [ 74.600464][ T8852] Kernel Offset: disabled [ 74.604787][ T8852] Rebooting in 86400 seconds..