[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 58.404752][ T26] audit: type=1800 audit(1567820630.485:25): pid=8780 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 58.443855][ T26] audit: type=1800 audit(1567820630.485:26): pid=8780 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 58.500670][ T26] audit: type=1800 audit(1567820630.495:27): pid=8780 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 '10.128.0.127' (ECDSA) to the list of known hosts. syzkaller login: [ 87.791309][ T8936] IPVS: ftp: loaded support on port[0] = 21 [ 87.847765][ T8936] chnl_net:caif_netlink_parms(): no params data found [ 87.876861][ T8936] bridge0: port 1(bridge_slave_0) entered blocking state [ 87.884422][ T8936] bridge0: port 1(bridge_slave_0) entered disabled state [ 87.892131][ T8936] device bridge_slave_0 entered promiscuous mode [ 87.900392][ T8936] bridge0: port 2(bridge_slave_1) entered blocking state [ 87.907606][ T8936] bridge0: port 2(bridge_slave_1) entered disabled state [ 87.915552][ T8936] device bridge_slave_1 entered promiscuous mode [ 87.935561][ T8936] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 87.946145][ T8936] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 87.964175][ T8936] team0: Port device team_slave_0 added [ 87.971257][ T8936] team0: Port device team_slave_1 added [ 88.055861][ T8936] device hsr_slave_0 entered promiscuous mode [ 88.094086][ T8936] device hsr_slave_1 entered promiscuous mode [ 88.141567][ T8936] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.149064][ T8936] bridge0: port 2(bridge_slave_1) entered forwarding state [ 88.156971][ T8936] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.164053][ T8936] bridge0: port 1(bridge_slave_0) entered forwarding state [ 88.197650][ T8936] 8021q: adding VLAN 0 to HW filter on device bond0 [ 88.208904][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 88.229292][ T22] bridge0: port 1(bridge_slave_0) entered disabled state [ 88.237689][ T22] bridge0: port 2(bridge_slave_1) entered disabled state [ 88.247134][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 88.258278][ T8936] 8021q: adding VLAN 0 to HW filter on device team0 [ 88.269552][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 88.278897][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.286528][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 88.305657][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 88.314698][ T22] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.321736][ T22] bridge0: port 2(bridge_slave_1) entered forwarding state [ 88.329977][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 88.340356][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 88.348580][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 88.363085][ T8936] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 88.375617][ T8936] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 88.389145][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 88.398170][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 88.408388][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 88.425706][ T8936] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 88.462583][ T8936] kasan: CONFIG_KASAN_INLINE enabled [ 88.468195][ T8936] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 88.476537][ T8936] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 88.483471][ T8936] CPU: 1 PID: 8936 Comm: syz-executor606 Not tainted 5.3.0-rc6-next-20190830 #75 [ 88.492551][ T8936] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 88.502692][ T8936] RIP: 0010:__list_del_entry_valid+0x85/0xf5 [ 88.508653][ T8936] 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 [ 88.528262][ T8936] RSP: 0018:ffff8880a7eef450 EFLAGS: 00010246 [ 88.534356][ T8936] RAX: dffffc0000000000 RBX: ffff8880a7560800 RCX: ffffffff81597aca [ 88.542330][ T8936] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880a7560b68 [ 88.550466][ T8936] RBP: ffff8880a7eef468 R08: 0000000000000004 R09: ffffed1014fdde7d [ 88.558428][ T8936] R10: ffffed1014fdde7c R11: 0000000000000003 R12: 0000000000000000 [ 88.566550][ T8936] R13: 0000000000000000 R14: ffff8880a7560b60 R15: ffff8880a7560ac0 [ 88.574510][ T8936] FS: 000055555633e880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 88.583513][ T8936] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 88.590336][ T8936] CR2: 0000000020000610 CR3: 000000009c52f000 CR4: 00000000001406e0 [ 88.598291][ T8936] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 88.606253][ T8936] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 88.614215][ T8936] Call Trace: [ 88.617621][ T8936] cbs_destroy+0x7d/0x2a0 [ 88.622144][ T8936] ? cbs_init+0x25d/0x450 [ 88.626457][ T8936] ? cbs_dequeue_soft+0x4b0/0x4b0 [ 88.631462][ T8936] qdisc_create+0xbc6/0x1210 [ 88.636054][ T8936] ? tc_get_qdisc+0xc10/0xc10 [ 88.640723][ T8936] ? __nla_parse+0x43/0x60 [ 88.645122][ T8936] tc_modify_qdisc+0x524/0x1c50 [ 88.649974][ T8936] ? qdisc_create+0x1210/0x1210 [ 88.654844][ T8936] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 88.661083][ T8936] ? qdisc_create+0x1210/0x1210 [ 88.665968][ T8936] rtnetlink_rcv_msg+0x463/0xb00 [ 88.670909][ T8936] ? rtnetlink_put_metrics+0x590/0x590 [ 88.676354][ T8936] ? netlink_deliver_tap+0x22d/0xbf0 [ 88.681617][ T8936] ? find_held_lock+0x35/0x130 [ 88.686368][ T8936] netlink_rcv_skb+0x177/0x450 [ 88.691118][ T8936] ? rtnetlink_put_metrics+0x590/0x590 [ 88.696558][ T8936] ? netlink_ack+0xb50/0xb50 [ 88.701142][ T8936] ? __kasan_check_read+0x11/0x20 [ 88.706147][ T8936] ? netlink_deliver_tap+0x254/0xbf0 [ 88.711411][ T8936] rtnetlink_rcv+0x1d/0x30 [ 88.715805][ T8936] netlink_unicast+0x531/0x710 [ 88.720570][ T8936] ? netlink_attachskb+0x7c0/0x7c0 [ 88.725875][ T8936] ? _copy_from_iter_full+0x25d/0x8c0 [ 88.731248][ T8936] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 88.736968][ T8936] ? __check_object_size+0x3d/0x437 [ 88.742152][ T8936] netlink_sendmsg+0x8a5/0xd60 [ 88.746907][ T8936] ? netlink_unicast+0x710/0x710 [ 88.751827][ T8936] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 88.757354][ T8936] ? apparmor_socket_sendmsg+0x2a/0x30 [ 88.762791][ T8936] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 88.769007][ T8936] ? security_socket_sendmsg+0x8d/0xc0 [ 88.774442][ T8936] ? netlink_unicast+0x710/0x710 [ 88.779355][ T8936] sock_sendmsg+0xd7/0x130 [ 88.783755][ T8936] ___sys_sendmsg+0x803/0x920 [ 88.788494][ T8936] ? copy_msghdr_from_user+0x440/0x440 [ 88.793944][ T8936] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 88.800159][ T8936] ? tomoyo_path_number_perm+0x263/0x520 [ 88.805783][ T8936] ? sock_ioctl+0x489/0x780 [ 88.810258][ T8936] ? dlci_ioctl_set+0x40/0x40 [ 88.814912][ T8936] ? __do_page_fault+0x56a/0xdd0 [ 88.820268][ T8936] ? dlci_ioctl_set+0x40/0x40 [ 88.824924][ T8936] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 88.831137][ T8936] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 88.837352][ T8936] ? __fget_light+0x1a9/0x230 [ 88.842000][ T8936] ? __fdget+0x1b/0x20 [ 88.846058][ T8936] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 88.852272][ T8936] __sys_sendmsg+0x105/0x1d0 [ 88.856864][ T8936] ? __sys_sendmsg_sock+0xd0/0xd0 [ 88.861996][ T8936] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 88.867539][ T8936] ? do_syscall_64+0x26/0x760 [ 88.872381][ T8936] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 88.878430][ T8936] ? do_syscall_64+0x26/0x760 [ 88.883612][ T8936] __x64_sys_sendmsg+0x78/0xb0 [ 88.890634][ T8936] do_syscall_64+0xfa/0x760 [ 88.895239][ T8936] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 88.901161][ T8936] RIP: 0033:0x441b59 [ 88.905039][ T8936] 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 [ 88.924635][ T8936] RSP: 002b:00007ffd06f6c7a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 88.933036][ T8936] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441b59 [ 88.941046][ T8936] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 88.948996][ T8936] RBP: 00007ffd06f6c7c0 R08: 0000000001bbbbbb R09: 0000000001bbbbbb [ 88.957035][ T8936] R10: 0000000001bbbbbb R11: 0000000000000246 R12: 0000000000000000 [ 88.965002][ T8936] R13: 00000000004030f0 R14: 0000000000000000 R15: 0000000000000000 [ 88.973244][ T8936] Modules linked in: [ 88.977209][ T8936] ---[ end trace 327042fdbdd3debd ]--- [ 88.982671][ T8936] RIP: 0010:__list_del_entry_valid+0x85/0xf5 [ 88.988687][ T8936] 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 [ 89.008325][ T8936] RSP: 0018:ffff8880a7eef450 EFLAGS: 00010246 [ 89.014413][ T8936] RAX: dffffc0000000000 RBX: ffff8880a7560800 RCX: ffffffff81597aca [ 89.022480][ T8936] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880a7560b68 [ 89.030497][ T8936] RBP: ffff8880a7eef468 R08: 0000000000000004 R09: ffffed1014fdde7d [ 89.038618][ T8936] R10: ffffed1014fdde7c R11: 0000000000000003 R12: 0000000000000000 [ 89.046647][ T8936] R13: 0000000000000000 R14: ffff8880a7560b60 R15: ffff8880a7560ac0 [ 89.054657][ T8936] FS: 000055555633e880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 89.063584][ T8936] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 89.070202][ T8936] CR2: 0000000020000610 CR3: 000000009c52f000 CR4: 00000000001406e0 [ 89.078212][ T8936] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 89.086227][ T8936] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 89.094359][ T8936] Kernel panic - not syncing: Fatal exception [ 89.101877][ T8936] Kernel Offset: disabled [ 89.106401][ T8936] Rebooting in 86400 seconds..