[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 54.876367][ T26] audit: type=1800 audit(1567847104.671:25): pid=8501 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 54.921428][ T26] audit: type=1800 audit(1567847104.671:26): pid=8501 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 54.972687][ T26] audit: type=1800 audit(1567847104.671:27): pid=8501 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 '10.128.10.11' (ECDSA) to the list of known hosts. syzkaller login: [ 63.382300][ T8655] IPVS: ftp: loaded support on port[0] = 21 [ 63.439933][ T8655] chnl_net:caif_netlink_parms(): no params data found [ 63.470430][ T8655] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.478634][ T8655] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.486845][ T8655] device bridge_slave_0 entered promiscuous mode [ 63.495352][ T8655] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.502536][ T8655] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.510519][ T8655] device bridge_slave_1 entered promiscuous mode [ 63.528124][ T8655] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.538912][ T8655] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.558453][ T8655] team0: Port device team_slave_0 added [ 63.566217][ T8655] team0: Port device team_slave_1 added [ 63.635410][ T8655] device hsr_slave_0 entered promiscuous mode [ 63.693221][ T8655] device hsr_slave_1 entered promiscuous mode [ 63.741392][ T8655] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.748877][ T8655] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.756940][ T8655] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.764012][ T8655] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.797395][ T8655] 8021q: adding VLAN 0 to HW filter on device bond0 [ 63.809626][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 63.820550][ T12] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.829106][ T12] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.837080][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 63.849221][ T8655] 8021q: adding VLAN 0 to HW filter on device team0 [ 63.859944][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.868627][ T3516] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.875807][ T3516] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.893712][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.902124][ T3516] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.909337][ T3516] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.917954][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 63.926833][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 63.936425][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.948979][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 63.960153][ T8655] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 63.971712][ T8655] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 63.980422][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 63.997685][ T8655] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 64.032302][ T8655] netlink: 24 bytes leftover after parsing attributes in process `syz-executor069'. [ 64.042106][ T8655] kasan: CONFIG_KASAN_INLINE enabled [ 64.047566][ T8655] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 64.055786][ T8655] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 64.062713][ T8655] CPU: 0 PID: 8655 Comm: syz-executor069 Not tainted 5.3.0-rc7+ #0 [ 64.070599][ T8655] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.080682][ T8655] RIP: 0010:__list_del_entry_valid+0x85/0xf5 [ 64.086637][ T8655] Code: 0f 84 e1 00 00 00 48 b8 22 01 00 00 00 00 ad de 49 39 c4 0f 84 e2 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 53 49 8b 14 24 4c 39 f2 0f 85 99 00 00 00 49 8d 7d [ 64.106411][ T8655] RSP: 0018:ffff88809f86f450 EFLAGS: 00010246 [ 64.112487][ T8655] RAX: dffffc0000000000 RBX: ffff888096a7f240 RCX: ffffffff8159b2aa [ 64.120456][ T8655] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888096a7f5a8 [ 64.129325][ T8655] RBP: ffff88809f86f468 R08: 0000000000000004 R09: ffffed1013f0de7d [ 64.137288][ T8655] R10: ffffed1013f0de7c R11: 0000000000000003 R12: 0000000000000000 [ 64.145243][ T8655] R13: 0000000000000000 R14: ffff888096a7f5a0 R15: ffff888096a7f500 [ 64.153245][ T8655] FS: 00005555558bb880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 64.162155][ T8655] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.168716][ T8655] CR2: 0000000020000610 CR3: 000000008f1f0000 CR4: 00000000001406f0 [ 64.178928][ T8655] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.186877][ T8655] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.194826][ T8655] Call Trace: [ 64.198096][ T8655] cbs_destroy+0x7d/0x2a0 [ 64.202433][ T8655] ? cbs_init+0x25d/0x450 [ 64.206765][ T8655] ? cbs_dequeue_soft+0x410/0x410 [ 64.211773][ T8655] qdisc_create+0xbc6/0x1210 [ 64.216351][ T8655] ? tc_get_qdisc+0xc10/0xc10 [ 64.221024][ T8655] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 64.227249][ T8655] tc_modify_qdisc+0x524/0x1c50 [ 64.232079][ T8655] ? qdisc_create+0x1210/0x1210 [ 64.236915][ T8655] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 64.243139][ T8655] ? qdisc_create+0x1210/0x1210 [ 64.247984][ T8655] rtnetlink_rcv_msg+0x463/0xb00 [ 64.252896][ T8655] ? rtnetlink_put_metrics+0x580/0x580 [ 64.258339][ T8655] ? netlink_deliver_tap+0x22d/0xbf0 [ 64.263640][ T8655] ? find_held_lock+0x35/0x130 [ 64.268382][ T8655] netlink_rcv_skb+0x177/0x450 [ 64.273118][ T8655] ? rtnetlink_put_metrics+0x580/0x580 [ 64.278556][ T8655] ? netlink_ack+0xb30/0xb30 [ 64.283121][ T8655] ? __kasan_check_read+0x11/0x20 [ 64.288119][ T8655] ? netlink_deliver_tap+0x254/0xbf0 [ 64.293382][ T8655] rtnetlink_rcv+0x1d/0x30 [ 64.297772][ T8655] netlink_unicast+0x531/0x710 [ 64.302511][ T8655] ? netlink_attachskb+0x7c0/0x7c0 [ 64.307606][ T8655] ? _copy_from_iter_full+0x25d/0x8a0 [ 64.312966][ T8655] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 64.318660][ T8655] ? __check_object_size+0x3d/0x437 [ 64.323845][ T8655] netlink_sendmsg+0x8a5/0xd60 [ 64.328596][ T8655] ? netlink_unicast+0x710/0x710 [ 64.333506][ T8655] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 64.339023][ T8655] ? apparmor_socket_sendmsg+0x2a/0x30 [ 64.344460][ T8655] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 64.350674][ T8655] ? security_socket_sendmsg+0x8d/0xc0 [ 64.356458][ T8655] ? netlink_unicast+0x710/0x710 [ 64.361373][ T8655] sock_sendmsg+0xd7/0x130 [ 64.365781][ T8655] ___sys_sendmsg+0x803/0x920 [ 64.370439][ T8655] ? copy_msghdr_from_user+0x440/0x440 [ 64.375877][ T8655] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 64.382093][ T8655] ? tomoyo_path_number_perm+0x263/0x520 [ 64.387721][ T8655] ? sock_ioctl+0x489/0x780 [ 64.392215][ T8655] ? dlci_ioctl_set+0x40/0x40 [ 64.396889][ T8655] ? __do_page_fault+0x56a/0xdd0 [ 64.401808][ T8655] ? dlci_ioctl_set+0x40/0x40 [ 64.406477][ T8655] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 64.412702][ T8655] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 64.418939][ T8655] ? __fget_light+0x1a9/0x230 [ 64.423601][ T8655] ? __fdget+0x1b/0x20 [ 64.427646][ T8655] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 64.433861][ T8655] __sys_sendmsg+0x105/0x1d0 [ 64.438425][ T8655] ? __sys_sendmsg_sock+0xd0/0xd0 [ 64.443446][ T8655] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 64.448879][ T8655] ? do_syscall_64+0x26/0x6a0 [ 64.453541][ T8655] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 64.459607][ T8655] ? do_syscall_64+0x26/0x6a0 [ 64.464273][ T8655] __x64_sys_sendmsg+0x78/0xb0 [ 64.469026][ T8655] do_syscall_64+0xfd/0x6a0 [ 64.473513][ T8655] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 64.479383][ T8655] RIP: 0033:0x441b59 [ 64.483261][ T8655] 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 [ 64.502940][ T8655] RSP: 002b:00007fffbfdb5b38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 64.511340][ T8655] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441b59 [ 64.519378][ T8655] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 64.527337][ T8655] RBP: 00007fffbfdb5b50 R08: 0000000001bbbbbb R09: 0000000001bbbbbb [ 64.535300][ T8655] R10: 0000000001bbbbbb R11: 0000000000000246 R12: 0000000000000000 [ 64.543246][ T8655] R13: 00000000004030f0 R14: 0000000000000000 R15: 0000000000000000 [ 64.551281][ T8655] Modules linked in: [ 64.556928][ T8655] ---[ end trace c6496c2cc62c5dfe ]--- [ 64.562412][ T8655] RIP: 0010:__list_del_entry_valid+0x85/0xf5 [ 64.568424][ T8655] Code: 0f 84 e1 00 00 00 48 b8 22 01 00 00 00 00 ad de 49 39 c4 0f 84 e2 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 53 49 8b 14 24 4c 39 f2 0f 85 99 00 00 00 49 8d 7d [ 64.588044][ T8655] RSP: 0018:ffff88809f86f450 EFLAGS: 00010246 [ 64.594115][ T8655] RAX: dffffc0000000000 RBX: ffff888096a7f240 RCX: ffffffff8159b2aa [ 64.602246][ T8655] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888096a7f5a8 [ 64.610230][ T8655] RBP: ffff88809f86f468 R08: 0000000000000004 R09: ffffed1013f0de7d [ 64.618229][ T8655] R10: ffffed1013f0de7c R11: 0000000000000003 R12: 0000000000000000 [ 64.626229][ T8655] R13: 0000000000000000 R14: ffff888096a7f5a0 R15: ffff888096a7f500 [ 64.634329][ T8655] FS: 00005555558bb880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 64.643288][ T8655] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.650030][ T8655] CR2: 0000000020000610 CR3: 000000008f1f0000 CR4: 00000000001406f0 [ 64.658032][ T8655] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.666017][ T8655] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.674084][ T8655] Kernel panic - not syncing: Fatal exception [ 64.681496][ T8655] Kernel Offset: disabled [ 64.685839][ T8655] Rebooting in 86400 seconds..