[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [ 54.957743][ T26] audit: type=1800 audit(1567779590.287:25): pid=8517 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 54.979330][ T26] audit: type=1800 audit(1567779590.297:26): pid=8517 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 55.001437][ T26] audit: type=1800 audit(1567779590.297:27): pid=8517 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 '10.128.0.38' (ECDSA) to the list of known hosts. syzkaller login: [ 83.140105][ T8672] IPVS: ftp: loaded support on port[0] = 21 [ 83.196639][ T8672] chnl_net:caif_netlink_parms(): no params data found [ 83.225327][ T8672] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.233600][ T8672] bridge0: port 1(bridge_slave_0) entered disabled state [ 83.241356][ T8672] device bridge_slave_0 entered promiscuous mode [ 83.249690][ T8672] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.257041][ T8672] bridge0: port 2(bridge_slave_1) entered disabled state [ 83.264982][ T8672] device bridge_slave_1 entered promiscuous mode [ 83.281971][ T8672] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 83.292328][ T8672] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 83.311734][ T8672] team0: Port device team_slave_0 added [ 83.318654][ T8672] team0: Port device team_slave_1 added [ 83.371898][ T8672] device hsr_slave_0 entered promiscuous mode [ 83.439748][ T8672] device hsr_slave_1 entered promiscuous mode [ 83.517489][ T8672] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.524824][ T8672] bridge0: port 2(bridge_slave_1) entered forwarding state [ 83.532637][ T8672] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.539759][ T8672] bridge0: port 1(bridge_slave_0) entered forwarding state [ 83.573121][ T8672] 8021q: adding VLAN 0 to HW filter on device bond0 [ 83.584294][ T2959] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 83.594283][ T2959] bridge0: port 1(bridge_slave_0) entered disabled state [ 83.602656][ T2959] bridge0: port 2(bridge_slave_1) entered disabled state [ 83.611231][ T2959] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 83.623699][ T8672] 8021q: adding VLAN 0 to HW filter on device team0 [ 83.635003][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 83.643751][ T3516] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.650867][ T3516] bridge0: port 1(bridge_slave_0) entered forwarding state [ 83.662252][ T2959] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 83.670898][ T2959] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.678079][ T2959] bridge0: port 2(bridge_slave_1) entered forwarding state [ 83.698537][ T8672] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 83.709962][ T8672] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 83.723339][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 83.732373][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 83.741379][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 83.750216][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 83.759654][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 83.767305][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready executing program [ 83.785699][ T8672] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 83.822980][ T8672] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 83.830821][ T8672] #PF: supervisor instruction fetch in kernel mode [ 83.837302][ T8672] #PF: error_code(0x0010) - not-present page [ 83.843257][ T8672] PGD a9ba0067 P4D a9ba0067 PUD a7851067 PMD 0 [ 83.849483][ T8672] Oops: 0010 [#1] PREEMPT SMP KASAN [ 83.854664][ T8672] CPU: 0 PID: 8672 Comm: syz-executor994 Not tainted 5.3.0-rc7+ #0 [ 83.862543][ T8672] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 83.872591][ T8672] RIP: 0010:0x0 [ 83.876047][ T8672] Code: Bad RIP value. [ 83.880103][ T8672] RSP: 0018:ffff888097fb74d8 EFLAGS: 00010246 [ 83.886144][ T8672] RAX: dffffc0000000000 RBX: ffffffff884a7740 RCX: ffffffff85b55676 [ 83.894110][ T8672] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880a4cd7400 [ 83.902075][ T8672] RBP: ffff888097fb75d0 R08: ffff88808dc2e440 R09: ffff888097fb7658 [ 83.910030][ T8672] R10: ffffed1012ff6ed9 R11: ffff888097fb76cf R12: ffff8880a4cd7400 [ 83.917980][ T8672] R13: 0000000000000001 R14: ffff888097fb75a8 R15: ffffffff884a7740 [ 83.925985][ T8672] FS: 0000555556952880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 83.934901][ T8672] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 83.941470][ T8672] CR2: ffffffffffffffd6 CR3: 000000009c578000 CR4: 00000000001406f0 [ 83.950239][ T8672] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 83.958201][ T8672] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 83.966258][ T8672] Call Trace: [ 83.969540][ T8672] tc_bind_tclass+0x13e/0x2f0 [ 83.974208][ T8672] ? qdisc_class_hash_init+0x110/0x110 [ 83.979664][ T8672] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 83.985915][ T8672] ? ns_capable_common+0x93/0x100 [ 83.990924][ T8672] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 83.996637][ T8672] ? qdisc_match_from_root+0x18a/0x280 [ 84.002093][ T8672] tc_ctl_tclass+0xadb/0xcd0 [ 84.006686][ T8672] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 84.012485][ T8672] ? rtnetlink_rcv_msg+0x3d0/0xb00 [ 84.017765][ T8672] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 84.023999][ T8672] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 84.029813][ T8672] rtnetlink_rcv_msg+0x463/0xb00 [ 84.034846][ T8672] ? rtnetlink_put_metrics+0x580/0x580 [ 84.040310][ T8672] ? netlink_deliver_tap+0x22d/0xbf0 [ 84.045604][ T8672] ? find_held_lock+0x35/0x130 [ 84.050373][ T8672] netlink_rcv_skb+0x177/0x450 [ 84.055313][ T8672] ? rtnetlink_put_metrics+0x580/0x580 [ 84.060762][ T8672] ? netlink_ack+0xb30/0xb30 [ 84.065338][ T8672] ? __kasan_check_read+0x11/0x20 [ 84.070364][ T8672] ? netlink_deliver_tap+0x254/0xbf0 [ 84.075637][ T8672] rtnetlink_rcv+0x1d/0x30 [ 84.080040][ T8672] netlink_unicast+0x531/0x710 [ 84.084791][ T8672] ? netlink_attachskb+0x7c0/0x7c0 [ 84.091590][ T8672] ? _copy_from_iter_full+0x25d/0x8a0 [ 84.097200][ T8672] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 84.102924][ T8672] ? __check_object_size+0x3d/0x437 [ 84.108126][ T8672] netlink_sendmsg+0x8a5/0xd60 [ 84.112921][ T8672] ? netlink_unicast+0x710/0x710 [ 84.117840][ T8672] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 84.123433][ T8672] ? apparmor_socket_sendmsg+0x2a/0x30 [ 84.129017][ T8672] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 84.135269][ T8672] ? security_socket_sendmsg+0x8d/0xc0 [ 84.140719][ T8672] ? netlink_unicast+0x710/0x710 [ 84.145648][ T8672] sock_sendmsg+0xd7/0x130 [ 84.150048][ T8672] ___sys_sendmsg+0x803/0x920 [ 84.154706][ T8672] ? copy_msghdr_from_user+0x440/0x440 [ 84.160584][ T8672] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 84.166822][ T8672] ? tomoyo_path_number_perm+0x263/0x520 [ 84.172455][ T8672] ? sock_ioctl+0x489/0x780 [ 84.176985][ T8672] ? dlci_ioctl_set+0x40/0x40 [ 84.181656][ T8672] ? __fd_install+0x1bc/0x640 [ 84.186328][ T8672] ? dlci_ioctl_set+0x40/0x40 [ 84.190998][ T8672] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 84.197233][ T8672] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 84.203479][ T8672] ? __fget_light+0x1a9/0x230 [ 84.208156][ T8672] ? __fdget+0x1b/0x20 [ 84.212420][ T8672] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 84.218655][ T8672] __sys_sendmsg+0x105/0x1d0 [ 84.223256][ T8672] ? __sys_sendmsg_sock+0xd0/0xd0 [ 84.228419][ T8672] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 84.233987][ T8672] ? do_syscall_64+0x26/0x6a0 [ 84.238682][ T8672] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 84.244751][ T8672] ? do_syscall_64+0x26/0x6a0 [ 84.249442][ T8672] __x64_sys_sendmsg+0x78/0xb0 [ 84.254658][ T8672] do_syscall_64+0xfd/0x6a0 [ 84.259162][ T8672] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 84.265046][ T8672] RIP: 0033:0x441cd9 [ 84.268934][ T8672] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 7b 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 84.288607][ T8672] RSP: 002b:00007ffc9938bcf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 84.297001][ T8672] RAX: ffffffffffffffda RBX: 0000315f6576616c RCX: 0000000000441cd9 [ 84.304967][ T8672] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000005 [ 84.312952][ T8672] RBP: 735f656764697262 R08: 0000000001bbbbbb R09: 0000000001bbbbbb [ 84.320907][ T8672] R10: 0000000001bbbbbb R11: 0000000000000246 R12: 0000000000000000 [ 84.328870][ T8672] R13: 0000000000403270 R14: 0000000000000000 R15: 0000000000000000 [ 84.336862][ T8672] Modules linked in: [ 84.340738][ T8672] CR2: 0000000000000000 [ 84.346851][ T8672] ---[ end trace d5605e2bdb92fab7 ]--- [ 84.352461][ T8672] RIP: 0010:0x0 [ 84.355922][ T8672] Code: Bad RIP value. [ 84.360001][ T8672] RSP: 0018:ffff888097fb74d8 EFLAGS: 00010246 [ 84.366079][ T8672] RAX: dffffc0000000000 RBX: ffffffff884a7740 RCX: ffffffff85b55676 [ 84.374088][ T8672] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880a4cd7400 [ 84.382331][ T8672] RBP: ffff888097fb75d0 R08: ffff88808dc2e440 R09: ffff888097fb7658 [ 84.390333][ T8672] R10: ffffed1012ff6ed9 R11: ffff888097fb76cf R12: ffff8880a4cd7400 [ 84.398303][ T8672] R13: 0000000000000001 R14: ffff888097fb75a8 R15: ffffffff884a7740 [ 84.406389][ T8672] FS: 0000555556952880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 84.415339][ T8672] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 84.421943][ T8672] CR2: ffffffffffffffd6 CR3: 000000009c578000 CR4: 00000000001406f0 [ 84.429929][ T8672] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 84.437882][ T8672] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 84.445931][ T8672] Kernel panic - not syncing: Fatal exception [ 84.453524][ T8672] Kernel Offset: disabled [ 84.457858][ T8672] Rebooting in 86400 seconds..