[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 58.820123][ T26] audit: type=1800 audit(1567822250.233:25): pid=8542 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 58.847535][ T26] audit: type=1800 audit(1567822250.233:26): pid=8542 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 58.890892][ T26] audit: type=1800 audit(1567822250.233:27): pid=8542 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 '10.128.0.15' (ECDSA) to the list of known hosts. syzkaller login: [ 69.249674][ T8698] IPVS: ftp: loaded support on port[0] = 21 [ 69.303061][ T8698] chnl_net:caif_netlink_parms(): no params data found [ 69.330766][ T8698] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.338462][ T8698] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.346300][ T8698] device bridge_slave_0 entered promiscuous mode [ 69.354538][ T8698] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.361736][ T8698] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.369686][ T8698] device bridge_slave_1 entered promiscuous mode [ 69.385946][ T8698] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.396804][ T8698] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.415840][ T8698] team0: Port device team_slave_0 added [ 69.423563][ T8698] team0: Port device team_slave_1 added [ 69.480082][ T8698] device hsr_slave_0 entered promiscuous mode [ 69.517599][ T8698] device hsr_slave_1 entered promiscuous mode [ 69.575939][ T8698] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.583420][ T8698] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.591305][ T8698] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.598389][ T8698] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.632111][ T8698] 8021q: adding VLAN 0 to HW filter on device bond0 [ 69.645159][ T2977] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.665119][ T2977] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.673761][ T2977] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.683148][ T2977] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 69.694578][ T8698] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.704843][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.713688][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.720806][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.739169][ T8701] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 69.748561][ T8701] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.755620][ T8701] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.764717][ T8701] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 69.775297][ T8701] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 69.783509][ T8701] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 69.798949][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 69.807964][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 69.819437][ T8698] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 69.838665][ T8698] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 69.872612][ T8698] kasan: CONFIG_KASAN_INLINE enabled [ 69.878401][ T8698] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 69.886750][ T8698] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 69.893673][ T8698] CPU: 0 PID: 8698 Comm: syz-executor398 Not tainted 5.3.0-rc6-next-20190830 #75 [ 69.902766][ T8698] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.912928][ T8698] RIP: 0010:__list_del_entry_valid+0x85/0xf5 [ 69.919019][ T8698] 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 [ 69.938617][ T8698] RSP: 0018:ffff88809f277450 EFLAGS: 00010246 [ 69.944675][ T8698] RAX: dffffc0000000000 RBX: ffff888090d89800 RCX: ffffffff81597aca [ 69.952622][ T8698] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888090d89b68 [ 69.960574][ T8698] RBP: ffff88809f277468 R08: 0000000000000004 R09: ffffed1013e4ee7d [ 69.968541][ T8698] R10: ffffed1013e4ee7c R11: 0000000000000003 R12: 0000000000000000 [ 69.976587][ T8698] R13: 0000000000000000 R14: ffff888090d89b60 R15: ffff888090d89ac0 [ 69.984548][ T8698] FS: 00005555574dd880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 69.993466][ T8698] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.000033][ T8698] CR2: 0000000020000610 CR3: 00000000a0b1e000 CR4: 00000000001406f0 [ 70.007987][ T8698] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.015937][ T8698] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.023884][ T8698] Call Trace: [ 70.027163][ T8698] cbs_destroy+0x7d/0x2a0 [ 70.031486][ T8698] ? cbs_init+0x25d/0x450 [ 70.035815][ T8698] ? cbs_dequeue_soft+0x4b0/0x4b0 [ 70.040817][ T8698] qdisc_create+0xbc6/0x1210 [ 70.045384][ T8698] ? tc_get_qdisc+0xc10/0xc10 [ 70.050055][ T8698] ? __nla_parse+0x43/0x60 [ 70.054450][ T8698] tc_modify_qdisc+0x524/0x1c50 [ 70.059297][ T8698] ? qdisc_create+0x1210/0x1210 [ 70.064136][ T8698] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 70.070366][ T8698] ? qdisc_create+0x1210/0x1210 [ 70.075194][ T8698] rtnetlink_rcv_msg+0x463/0xb00 [ 70.080108][ T8698] ? rtnetlink_put_metrics+0x590/0x590 [ 70.085548][ T8698] ? netlink_deliver_tap+0x22d/0xbf0 [ 70.090822][ T8698] ? find_held_lock+0x35/0x130 [ 70.095563][ T8698] netlink_rcv_skb+0x177/0x450 [ 70.100305][ T8698] ? rtnetlink_put_metrics+0x590/0x590 [ 70.105751][ T8698] ? netlink_ack+0xb50/0xb50 [ 70.110359][ T8698] ? __kasan_check_read+0x11/0x20 [ 70.115684][ T8698] ? netlink_deliver_tap+0x254/0xbf0 [ 70.120949][ T8698] rtnetlink_rcv+0x1d/0x30 [ 70.125350][ T8698] netlink_unicast+0x531/0x710 [ 70.130102][ T8698] ? netlink_attachskb+0x7c0/0x7c0 [ 70.135208][ T8698] ? _copy_from_iter_full+0x25d/0x8c0 [ 70.140574][ T8698] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 70.146271][ T8698] ? __check_object_size+0x3d/0x437 [ 70.151446][ T8698] netlink_sendmsg+0x8a5/0xd60 [ 70.156187][ T8698] ? netlink_unicast+0x710/0x710 [ 70.161103][ T8698] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 70.166728][ T8698] ? apparmor_socket_sendmsg+0x2a/0x30 [ 70.172167][ T8698] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 70.178440][ T8698] ? security_socket_sendmsg+0x8d/0xc0 [ 70.183909][ T8698] ? netlink_unicast+0x710/0x710 [ 70.188834][ T8698] sock_sendmsg+0xd7/0x130 [ 70.193230][ T8698] ___sys_sendmsg+0x803/0x920 [ 70.197884][ T8698] ? copy_msghdr_from_user+0x440/0x440 [ 70.203326][ T8698] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 70.209544][ T8698] ? tomoyo_path_number_perm+0x263/0x520 [ 70.215152][ T8698] ? sock_ioctl+0x489/0x780 [ 70.219632][ T8698] ? dlci_ioctl_set+0x40/0x40 [ 70.224287][ T8698] ? __do_page_fault+0x56a/0xdd0 [ 70.229202][ T8698] ? dlci_ioctl_set+0x40/0x40 [ 70.233856][ T8698] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 70.240077][ T8698] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 70.246292][ T8698] ? __fget_light+0x1a9/0x230 [ 70.250944][ T8698] ? __fdget+0x1b/0x20 [ 70.255006][ T8698] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 70.261257][ T8698] __sys_sendmsg+0x105/0x1d0 [ 70.265829][ T8698] ? __sys_sendmsg_sock+0xd0/0xd0 [ 70.270848][ T8698] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 70.276287][ T8698] ? do_syscall_64+0x26/0x760 [ 70.280952][ T8698] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 70.287024][ T8698] ? do_syscall_64+0x26/0x760 [ 70.291682][ T8698] __x64_sys_sendmsg+0x78/0xb0 [ 70.296445][ T8698] do_syscall_64+0xfa/0x760 [ 70.300932][ T8698] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 70.306855][ T8698] RIP: 0033:0x441b59 [ 70.310758][ T8698] 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 [ 70.330356][ T8698] RSP: 002b:00007ffc7955b7e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 70.339358][ T8698] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441b59 [ 70.347309][ T8698] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 70.355429][ T8698] RBP: 00007ffc7955b800 R08: 0000000001bbbbbb R09: 0000000001bbbbbb [ 70.363379][ T8698] R10: 0000000001bbbbbb R11: 0000000000000246 R12: 0000000000000000 [ 70.371341][ T8698] R13: 00000000004030f0 R14: 0000000000000000 R15: 0000000000000000 [ 70.379296][ T8698] Modules linked in: [ 70.383751][ T8698] ---[ end trace c79a32534d07cf67 ]--- [ 70.389283][ T8698] RIP: 0010:__list_del_entry_valid+0x85/0xf5 [ 70.395262][ T8698] 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 [ 70.414924][ T8698] RSP: 0018:ffff88809f277450 EFLAGS: 00010246 [ 70.421032][ T8698] RAX: dffffc0000000000 RBX: ffff888090d89800 RCX: ffffffff81597aca [ 70.429042][ T8698] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888090d89b68 [ 70.437004][ T8698] RBP: ffff88809f277468 R08: 0000000000000004 R09: ffffed1013e4ee7d [ 70.445004][ T8698] R10: ffffed1013e4ee7c R11: 0000000000000003 R12: 0000000000000000 [ 70.453004][ T8698] R13: 0000000000000000 R14: ffff888090d89b60 R15: ffff888090d89ac0 [ 70.460998][ T8698] FS: 00005555574dd880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 70.469946][ T8698] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.476523][ T8698] CR2: 0000000020000610 CR3: 00000000a0b1e000 CR4: 00000000001406f0 [ 70.484519][ T8698] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.492501][ T8698] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.500504][ T8698] Kernel panic - not syncing: Fatal exception [ 70.508161][ T8698] Kernel Offset: disabled [ 70.512491][ T8698] Rebooting in 86400 seconds..