[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 55.403904][ T24] audit: type=1800 audit(1567843697.410:25): pid=8590 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 55.425833][ T24] audit: type=1800 audit(1567843697.410:26): pid=8590 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 55.463052][ T24] audit: type=1800 audit(1567843697.420:27): pid=8590 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 '10.128.0.21' (ECDSA) to the list of known hosts. syzkaller login: [ 66.194934][ T8744] IPVS: ftp: loaded support on port[0] = 21 [ 66.251354][ T8744] chnl_net:caif_netlink_parms(): no params data found [ 66.278315][ T8744] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.286308][ T8744] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.294227][ T8744] device bridge_slave_0 entered promiscuous mode [ 66.302267][ T8744] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.309379][ T8744] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.317425][ T8744] device bridge_slave_1 entered promiscuous mode [ 66.334424][ T8744] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.345202][ T8744] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.364448][ T8744] team0: Port device team_slave_0 added [ 66.371641][ T8744] team0: Port device team_slave_1 added [ 66.451875][ T8744] device hsr_slave_0 entered promiscuous mode [ 66.520417][ T8744] device hsr_slave_1 entered promiscuous mode [ 66.597164][ T8744] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.604366][ T8744] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.612150][ T8744] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.619352][ T8744] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.653866][ T8744] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.664809][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.685888][ T17] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.694358][ T17] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.704103][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 66.715554][ T8744] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.727104][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 66.736033][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.743688][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.761144][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 66.770756][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.777830][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.786013][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 66.795232][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 66.812322][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.821269][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 66.830529][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 66.840876][ T8744] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 66.858342][ T8744] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.892871][ T8744] kasan: CONFIG_KASAN_INLINE enabled [ 66.898354][ T8744] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 66.907221][ T8744] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 66.914193][ T8744] CPU: 0 PID: 8744 Comm: syz-executor988 Not tainted 5.3.0-rc7+ #0 [ 66.922334][ T8744] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.932617][ T8744] RIP: 0010:__list_del_entry_valid+0x85/0xf5 [ 66.938671][ T8744] 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 [ 66.959369][ T8744] RSP: 0018:ffff8880a783f450 EFLAGS: 00010246 [ 66.965543][ T8744] RAX: dffffc0000000000 RBX: ffff8880a48ded80 RCX: ffffffff8159b2aa [ 66.973506][ T8744] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880a48df0e8 [ 66.981552][ T8744] RBP: ffff8880a783f468 R08: 0000000000000004 R09: ffffed1014f07e7d [ 66.989522][ T8744] R10: ffffed1014f07e7c R11: 0000000000000003 R12: 0000000000000000 [ 66.998221][ T8744] R13: 0000000000000000 R14: ffff8880a48df0e0 R15: ffff8880a48df040 [ 67.006687][ T8744] FS: 0000555556638880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 67.015702][ T8744] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.022731][ T8744] CR2: 0000000020000610 CR3: 000000009b51a000 CR4: 00000000001406f0 [ 67.031338][ T8744] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.039607][ T8744] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.047575][ T8744] Call Trace: [ 67.050855][ T8744] cbs_destroy+0x7d/0x2a0 [ 67.055200][ T8744] ? cbs_init+0x25d/0x450 [ 67.059646][ T8744] ? cbs_dequeue_soft+0x410/0x410 [ 67.064689][ T8744] qdisc_create+0xbc6/0x1210 [ 67.069275][ T8744] ? tc_get_qdisc+0xc10/0xc10 [ 67.073952][ T8744] ? __nla_parse+0x43/0x60 [ 67.078498][ T8744] tc_modify_qdisc+0x524/0x1c50 [ 67.083467][ T8744] ? qdisc_create+0x1210/0x1210 [ 67.088345][ T8744] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 67.094615][ T8744] ? qdisc_create+0x1210/0x1210 [ 67.099446][ T8744] rtnetlink_rcv_msg+0x463/0xb00 [ 67.104628][ T8744] ? rtnetlink_put_metrics+0x580/0x580 [ 67.110072][ T8744] ? netlink_deliver_tap+0x22d/0xbf0 [ 67.115354][ T8744] ? find_held_lock+0x35/0x130 [ 67.120199][ T8744] netlink_rcv_skb+0x177/0x450 [ 67.124950][ T8744] ? rtnetlink_put_metrics+0x580/0x580 [ 67.130387][ T8744] ? netlink_ack+0xb30/0xb30 [ 67.135046][ T8744] ? __kasan_check_read+0x11/0x20 [ 67.140063][ T8744] ? netlink_deliver_tap+0x254/0xbf0 [ 67.145352][ T8744] rtnetlink_rcv+0x1d/0x30 [ 67.149753][ T8744] netlink_unicast+0x531/0x710 [ 67.154508][ T8744] ? netlink_attachskb+0x7c0/0x7c0 [ 67.159599][ T8744] ? _copy_from_iter_full+0x25d/0x8a0 [ 67.165214][ T8744] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 67.170924][ T8744] ? __check_object_size+0x3d/0x437 [ 67.179329][ T8744] netlink_sendmsg+0x8a5/0xd60 [ 67.184091][ T8744] ? netlink_unicast+0x710/0x710 [ 67.189007][ T8744] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 67.194535][ T8744] ? apparmor_socket_sendmsg+0x2a/0x30 [ 67.199986][ T8744] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.206215][ T8744] ? security_socket_sendmsg+0x8d/0xc0 [ 67.211653][ T8744] ? netlink_unicast+0x710/0x710 [ 67.216569][ T8744] sock_sendmsg+0xd7/0x130 [ 67.220973][ T8744] ___sys_sendmsg+0x803/0x920 [ 67.225630][ T8744] ? copy_msghdr_from_user+0x440/0x440 [ 67.231069][ T8744] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 67.237287][ T8744] ? tomoyo_path_number_perm+0x263/0x520 [ 67.242903][ T8744] ? sock_ioctl+0x489/0x780 [ 67.247382][ T8744] ? dlci_ioctl_set+0x40/0x40 [ 67.252039][ T8744] ? __do_page_fault+0x56a/0xdd0 [ 67.256975][ T8744] ? dlci_ioctl_set+0x40/0x40 [ 67.261659][ T8744] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.267916][ T8744] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.274168][ T8744] ? __fget_light+0x1a9/0x230 [ 67.278832][ T8744] ? __fdget+0x1b/0x20 [ 67.282897][ T8744] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 67.289125][ T8744] __sys_sendmsg+0x105/0x1d0 [ 67.293702][ T8744] ? __sys_sendmsg_sock+0xd0/0xd0 [ 67.298731][ T8744] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 67.304274][ T8744] ? do_syscall_64+0x26/0x6a0 [ 67.308953][ T8744] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.315000][ T8744] ? do_syscall_64+0x26/0x6a0 [ 67.319671][ T8744] __x64_sys_sendmsg+0x78/0xb0 [ 67.324452][ T8744] do_syscall_64+0xfd/0x6a0 [ 67.328939][ T8744] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.334829][ T8744] RIP: 0033:0x441b59 [ 67.338726][ T8744] 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 [ 67.359012][ T8744] RSP: 002b:00007fff4a6ef918 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 67.367516][ T8744] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441b59 [ 67.375563][ T8744] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 67.383561][ T8744] RBP: 00007fff4a6ef930 R08: 0000000001bbbbbb R09: 0000000001bbbbbb [ 67.391519][ T8744] R10: 0000000001bbbbbb R11: 0000000000000246 R12: 0000000000000000 [ 67.399481][ T8744] R13: 00000000004030f0 R14: 0000000000000000 R15: 0000000000000000 [ 67.407463][ T8744] Modules linked in: [ 67.411412][ T8744] ---[ end trace a8de1f32d137a932 ]--- [ 67.416894][ T8744] RIP: 0010:__list_del_entry_valid+0x85/0xf5 [ 67.423069][ T8744] 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 [ 67.443141][ T8744] RSP: 0018:ffff8880a783f450 EFLAGS: 00010246 [ 67.449201][ T8744] RAX: dffffc0000000000 RBX: ffff8880a48ded80 RCX: ffffffff8159b2aa [ 67.457187][ T8744] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880a48df0e8 [ 67.465188][ T8744] RBP: ffff8880a783f468 R08: 0000000000000004 R09: ffffed1014f07e7d [ 67.473200][ T8744] R10: ffffed1014f07e7c R11: 0000000000000003 R12: 0000000000000000 [ 67.481443][ T8744] R13: 0000000000000000 R14: ffff8880a48df0e0 R15: ffff8880a48df040 [ 67.489399][ T8744] FS: 0000555556638880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 67.498343][ T8744] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.505403][ T8744] CR2: 0000000020000610 CR3: 000000009b51a000 CR4: 00000000001406f0 [ 67.513649][ T8744] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.521642][ T8744] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.529598][ T8744] Kernel panic - not syncing: Fatal exception [ 67.537435][ T8744] Kernel Offset: disabled [ 67.541765][ T8744] Rebooting in 86400 seconds..