[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [ 55.780275][ T26] audit: type=1800 audit(1567885319.459:25): pid=8639 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 55.807719][ T26] audit: type=1800 audit(1567885319.459:26): pid=8639 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 55.835285][ T26] audit: type=1800 audit(1567885319.459:27): pid=8639 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 '10.128.1.24' (ECDSA) to the list of known hosts. 2019/09/07 19:42:11 parsed 1 programs 2019/09/07 19:42:12 executed programs: 0 syzkaller login: [ 69.298208][ T8806] IPVS: ftp: loaded support on port[0] = 21 [ 69.360733][ T8806] chnl_net:caif_netlink_parms(): no params data found [ 69.386468][ T8806] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.393885][ T8806] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.401899][ T8806] device bridge_slave_0 entered promiscuous mode [ 69.409940][ T8806] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.417176][ T8806] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.424825][ T8806] device bridge_slave_1 entered promiscuous mode [ 69.441696][ T8806] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.453093][ T8806] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.472474][ T8806] team0: Port device team_slave_0 added [ 69.480181][ T8806] team0: Port device team_slave_1 added [ 69.538225][ T8806] device hsr_slave_0 entered promiscuous mode [ 69.605902][ T8806] device hsr_slave_1 entered promiscuous mode [ 69.664163][ T8806] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.672435][ T8806] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.680392][ T8806] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.687784][ T8806] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.719824][ T8806] 8021q: adding VLAN 0 to HW filter on device bond0 [ 69.733453][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.753930][ T22] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.762256][ T22] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.771175][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 69.782364][ T8806] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.793361][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.801936][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.809039][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.827041][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 69.835422][ T22] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.842533][ T22] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.850690][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 69.861077][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 69.869147][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 69.881860][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 69.893895][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 69.903655][ T8806] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 69.920327][ T8806] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.080473][ T8981] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 71.088401][ T8981] #PF: supervisor instruction fetch in kernel mode [ 71.095428][ T8981] #PF: error_code(0x0010) - not-present page [ 71.101576][ T8981] PGD 8d898067 P4D 8d898067 PUD 8d899067 PMD 0 [ 71.107819][ T8981] Oops: 0010 [#1] PREEMPT SMP KASAN [ 71.112998][ T8981] CPU: 1 PID: 8981 Comm: syz-executor.0 Not tainted 5.3.0-rc6-next-20190830 #75 [ 71.121995][ T8981] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.132040][ T8981] RIP: 0010:0x0 [ 71.135492][ T8981] Code: Bad RIP value. [ 71.139551][ T8981] RSP: 0018:ffff8880a4a7f4d8 EFLAGS: 00010246 [ 71.145608][ T8981] RAX: dffffc0000000000 RBX: ffffffff884a25a0 RCX: ffffffff85b92086 [ 71.153608][ T8981] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88809648c000 [ 71.161599][ T8981] RBP: ffff8880a4a7f5d0 R08: ffff8880a7c0e5c0 R09: ffff8880a4a7f658 [ 71.169586][ T8981] R10: ffffed101494fed9 R11: ffff8880a4a7f6cf R12: ffff88809648c000 [ 71.177538][ T8981] R13: 0000000000000001 R14: ffff8880a4a7f5a8 R15: ffffffff884a25a0 [ 71.185503][ T8981] FS: 00007fd0a7449700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 71.194412][ T8981] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.200989][ T8981] CR2: ffffffffffffffd6 CR3: 00000000a7d15000 CR4: 00000000001406e0 [ 71.208972][ T8981] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.216935][ T8981] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.225036][ T8981] Call Trace: [ 71.228314][ T8981] tc_bind_tclass+0x13e/0x2f0 [ 71.232975][ T8981] ? qdisc_class_hash_init+0x110/0x110 [ 71.238594][ T8981] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.244854][ T8981] ? ns_capable_common+0x93/0x100 [ 71.250139][ T8981] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 71.255858][ T8981] ? qdisc_match_from_root+0x18a/0x280 [ 71.261320][ T8981] tc_ctl_tclass+0xadb/0xcd0 [ 71.265893][ T8981] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 71.271695][ T8981] ? rtnetlink_rcv_msg+0x3d0/0xb00 [ 71.276796][ T8981] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 71.283016][ T8981] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 71.288819][ T8981] rtnetlink_rcv_msg+0x463/0xb00 [ 71.293791][ T8981] ? rtnetlink_put_metrics+0x590/0x590 [ 71.299238][ T8981] ? netlink_deliver_tap+0x22d/0xbf0 [ 71.304534][ T8981] ? find_held_lock+0x35/0x130 [ 71.309324][ T8981] netlink_rcv_skb+0x177/0x450 [ 71.314083][ T8981] ? rtnetlink_put_metrics+0x590/0x590 [ 71.319531][ T8981] ? netlink_ack+0xb50/0xb50 [ 71.324107][ T8981] ? __kasan_check_read+0x11/0x20 [ 71.329128][ T8981] ? netlink_deliver_tap+0x254/0xbf0 [ 71.334410][ T8981] rtnetlink_rcv+0x1d/0x30 [ 71.338807][ T8981] netlink_unicast+0x531/0x710 [ 71.343553][ T8981] ? netlink_attachskb+0x7c0/0x7c0 [ 71.348655][ T8981] ? _copy_from_iter_full+0x25d/0x8c0 [ 71.354013][ T8981] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 71.359716][ T8981] ? __check_object_size+0x3d/0x437 [ 71.364896][ T8981] netlink_sendmsg+0x8a5/0xd60 [ 71.369735][ T8981] ? netlink_unicast+0x710/0x710 [ 71.374656][ T8981] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 71.380186][ T8981] ? apparmor_socket_sendmsg+0x2a/0x30 [ 71.385629][ T8981] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.391870][ T8981] ? security_socket_sendmsg+0x8d/0xc0 [ 71.397315][ T8981] ? netlink_unicast+0x710/0x710 [ 71.402250][ T8981] sock_sendmsg+0xd7/0x130 [ 71.406650][ T8981] ___sys_sendmsg+0x803/0x920 [ 71.411423][ T8981] ? copy_msghdr_from_user+0x440/0x440 [ 71.416887][ T8981] ? __kasan_check_read+0x11/0x20 [ 71.421921][ T8981] ? __fget+0x384/0x560 [ 71.426070][ T8981] ? ksys_dup3+0x3e0/0x3e0 [ 71.430513][ T8981] ? __fget_light+0x1a9/0x230 [ 71.435454][ T8981] ? __fdget+0x1b/0x20 [ 71.439509][ T8981] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 71.445964][ T8981] __sys_sendmsg+0x105/0x1d0 [ 71.450542][ T8981] ? __sys_sendmsg_sock+0xd0/0xd0 [ 71.455577][ T8981] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 71.461037][ T8981] ? do_syscall_64+0x26/0x760 [ 71.465695][ T8981] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 71.471770][ T8981] ? do_syscall_64+0x26/0x760 [ 71.476451][ T8981] __x64_sys_sendmsg+0x78/0xb0 [ 71.481221][ T8981] do_syscall_64+0xfa/0x760 [ 71.485718][ T8981] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 71.491798][ T8981] RIP: 0033:0x4598e9 [ 71.495687][ T8981] 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 [ 71.515654][ T8981] RSP: 002b:00007fd0a7448c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 71.524066][ T8981] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 [ 71.532025][ T8981] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 71.540154][ T8981] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 71.548114][ T8981] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd0a74496d4 [ 71.556177][ T8981] R13: 00000000004c77fb R14: 00000000004dd098 R15: 00000000ffffffff [ 71.564141][ T8981] Modules linked in: [ 71.568012][ T8981] CR2: 0000000000000000 [ 71.572730][ T8981] ---[ end trace a6432c449660349e ]--- [ 71.578369][ T8981] RIP: 0010:0x0 [ 71.581836][ T8981] Code: Bad RIP value. [ 71.586132][ T8981] RSP: 0018:ffff8880a4a7f4d8 EFLAGS: 00010246 [ 71.592198][ T8981] RAX: dffffc0000000000 RBX: ffffffff884a25a0 RCX: ffffffff85b92086 [ 71.600411][ T8981] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88809648c000 [ 71.608437][ T8981] RBP: ffff8880a4a7f5d0 R08: ffff8880a7c0e5c0 R09: ffff8880a4a7f658 [ 71.616469][ T8981] R10: ffffed101494fed9 R11: ffff8880a4a7f6cf R12: ffff88809648c000 [ 71.624466][ T8981] R13: 0000000000000001 R14: ffff8880a4a7f5a8 R15: ffffffff884a25a0 [ 71.632666][ T8981] FS: 00007fd0a7449700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 71.641679][ T8981] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.648333][ T8981] CR2: ffffffffffffffd6 CR3: 00000000a7d15000 CR4: 00000000001406e0 [ 71.656341][ T8981] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.664317][ T8981] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.672358][ T8981] Kernel panic - not syncing: Fatal exception [ 71.679929][ T8981] Kernel Offset: disabled [ 71.684273][ T8981] Rebooting in 86400 seconds..