[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 56.671914][ T26] audit: type=1800 audit(1567875346.467:25): pid=8720 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 56.709964][ T26] audit: type=1800 audit(1567875346.467:26): pid=8720 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 56.738284][ T26] audit: type=1800 audit(1567875346.467:27): pid=8720 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 '10.128.0.96' (ECDSA) to the list of known hosts. syzkaller login: [ 66.614638][ T8874] IPVS: ftp: loaded support on port[0] = 21 [ 66.669495][ T8874] chnl_net:caif_netlink_parms(): no params data found [ 66.697350][ T8874] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.705556][ T8874] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.713316][ T8874] device bridge_slave_0 entered promiscuous mode [ 66.722060][ T8874] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.729134][ T8874] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.736932][ T8874] device bridge_slave_1 entered promiscuous mode [ 66.754343][ T8874] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.765094][ T8874] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.784361][ T8874] team0: Port device team_slave_0 added [ 66.791364][ T8874] team0: Port device team_slave_1 added [ 66.863038][ T8874] device hsr_slave_0 entered promiscuous mode [ 66.930755][ T8874] device hsr_slave_1 entered promiscuous mode [ 66.998125][ T8874] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.005437][ T8874] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.015155][ T8874] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.022255][ T8874] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.055256][ T8874] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.067914][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.088663][ T22] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.097266][ T22] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.106357][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 67.117466][ T8874] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.128292][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 67.137276][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.144363][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.161199][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 67.169655][ T22] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.176762][ T22] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.184748][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 67.194472][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 67.204269][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 67.218699][ T8874] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 67.229763][ T8874] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 67.241914][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 67.250351][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 67.259697][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 67.275801][ T8874] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 67.310191][ T8874] kasan: CONFIG_KASAN_INLINE enabled [ 67.315951][ T8874] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 67.324336][ T8874] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 67.331292][ T8874] CPU: 1 PID: 8874 Comm: syz-executor468 Not tainted 5.3.0-rc6-next-20190830 #75 [ 67.340389][ T8874] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.350451][ T8874] RIP: 0010:__list_del_entry_valid+0x85/0xf5 [ 67.356424][ T8874] 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 [ 67.376005][ T8874] RSP: 0018:ffff8880964ff450 EFLAGS: 00010246 [ 67.382057][ T8874] RAX: dffffc0000000000 RBX: ffff888098f37000 RCX: ffffffff81597aca [ 67.390062][ T8874] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888098f37368 [ 67.398126][ T8874] RBP: ffff8880964ff468 R08: 0000000000000004 R09: ffffed1012c9fe7d [ 67.406080][ T8874] R10: ffffed1012c9fe7c R11: 0000000000000003 R12: 0000000000000000 [ 67.414030][ T8874] R13: 0000000000000000 R14: ffff888098f37360 R15: ffff888098f372c0 [ 67.421982][ T8874] FS: 0000555556193880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 67.430894][ T8874] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.437478][ T8874] CR2: 0000000020000610 CR3: 0000000096b0f000 CR4: 00000000001406e0 [ 67.445436][ T8874] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.453383][ T8874] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.461421][ T8874] Call Trace: [ 67.464746][ T8874] cbs_destroy+0x7d/0x2a0 [ 67.469062][ T8874] ? cbs_init+0x25d/0x450 [ 67.473427][ T8874] ? cbs_dequeue_soft+0x4b0/0x4b0 [ 67.478434][ T8874] qdisc_create+0xbc6/0x1210 [ 67.483005][ T8874] ? tc_get_qdisc+0xc10/0xc10 [ 67.487712][ T8874] ? __nla_parse+0x43/0x60 [ 67.492110][ T8874] tc_modify_qdisc+0x524/0x1c50 [ 67.496938][ T8874] ? qdisc_create+0x1210/0x1210 [ 67.501771][ T8874] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 67.508055][ T8874] ? qdisc_create+0x1210/0x1210 [ 67.512883][ T8874] rtnetlink_rcv_msg+0x463/0xb00 [ 67.517796][ T8874] ? rtnetlink_put_metrics+0x590/0x590 [ 67.523230][ T8874] ? netlink_deliver_tap+0x22d/0xbf0 [ 67.528500][ T8874] ? find_held_lock+0x35/0x130 [ 67.533242][ T8874] netlink_rcv_skb+0x177/0x450 [ 67.537986][ T8874] ? rtnetlink_put_metrics+0x590/0x590 [ 67.543420][ T8874] ? netlink_ack+0xb50/0xb50 [ 67.547990][ T8874] ? __kasan_check_read+0x11/0x20 [ 67.552991][ T8874] ? netlink_deliver_tap+0x254/0xbf0 [ 67.558253][ T8874] rtnetlink_rcv+0x1d/0x30 [ 67.562647][ T8874] netlink_unicast+0x531/0x710 [ 67.567412][ T8874] ? netlink_attachskb+0x7c0/0x7c0 [ 67.572501][ T8874] ? _copy_from_iter_full+0x25d/0x8c0 [ 67.577848][ T8874] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 67.583540][ T8874] ? __check_object_size+0x3d/0x437 [ 67.588713][ T8874] netlink_sendmsg+0x8a5/0xd60 [ 67.593452][ T8874] ? netlink_unicast+0x710/0x710 [ 67.598364][ T8874] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 67.603883][ T8874] ? apparmor_socket_sendmsg+0x2a/0x30 [ 67.609318][ T8874] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.615541][ T8874] ? security_socket_sendmsg+0x8d/0xc0 [ 67.620978][ T8874] ? netlink_unicast+0x710/0x710 [ 67.625888][ T8874] sock_sendmsg+0xd7/0x130 [ 67.630278][ T8874] ___sys_sendmsg+0x803/0x920 [ 67.634926][ T8874] ? copy_msghdr_from_user+0x440/0x440 [ 67.640360][ T8874] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 67.646574][ T8874] ? tomoyo_path_number_perm+0x263/0x520 [ 67.652189][ T8874] ? sock_ioctl+0x489/0x780 [ 67.656665][ T8874] ? dlci_ioctl_set+0x40/0x40 [ 67.661318][ T8874] ? __do_page_fault+0x56a/0xdd0 [ 67.666235][ T8874] ? dlci_ioctl_set+0x40/0x40 [ 67.670887][ T8874] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.677115][ T8874] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.683328][ T8874] ? __fget_light+0x1a9/0x230 [ 67.687975][ T8874] ? __fdget+0x1b/0x20 [ 67.692026][ T8874] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 67.698239][ T8874] __sys_sendmsg+0x105/0x1d0 [ 67.702817][ T8874] ? __sys_sendmsg_sock+0xd0/0xd0 [ 67.707818][ T8874] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 67.713250][ T8874] ? do_syscall_64+0x26/0x760 [ 67.717913][ T8874] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.723950][ T8874] ? do_syscall_64+0x26/0x760 [ 67.728601][ T8874] __x64_sys_sendmsg+0x78/0xb0 [ 67.733338][ T8874] do_syscall_64+0xfa/0x760 [ 67.737816][ T8874] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.743680][ T8874] RIP: 0033:0x441b59 [ 67.747554][ T8874] 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 [ 67.767131][ T8874] RSP: 002b:00007fff0cc3a038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 67.775514][ T8874] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441b59 [ 67.783469][ T8874] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 67.791423][ T8874] RBP: 00007fff0cc3a050 R08: 0000000001bbbbbb R09: 0000000001bbbbbb [ 67.799367][ T8874] R10: 0000000001bbbbbb R11: 0000000000000246 R12: 0000000000000000 [ 67.807311][ T8874] R13: 00000000004030f0 R14: 0000000000000000 R15: 0000000000000000 [ 67.815258][ T8874] Modules linked in: [ 67.819202][ T8874] ---[ end trace 0290ea045d7016c0 ]--- [ 67.824683][ T8874] RIP: 0010:__list_del_entry_valid+0x85/0xf5 [ 67.830682][ T8874] 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 [ 67.850405][ T8874] RSP: 0018:ffff8880964ff450 EFLAGS: 00010246 [ 67.856484][ T8874] RAX: dffffc0000000000 RBX: ffff888098f37000 RCX: ffffffff81597aca [ 67.864465][ T8874] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888098f37368 [ 67.872437][ T8874] RBP: ffff8880964ff468 R08: 0000000000000004 R09: ffffed1012c9fe7d [ 67.880384][ T8874] R10: ffffed1012c9fe7c R11: 0000000000000003 R12: 0000000000000000 [ 67.888365][ T8874] R13: 0000000000000000 R14: ffff888098f37360 R15: ffff888098f372c0 [ 67.896355][ T8874] FS: 0000555556193880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 67.905300][ T8874] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.911890][ T8874] CR2: 0000000020000610 CR3: 0000000096b0f000 CR4: 00000000001406e0 [ 67.919843][ T8874] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.927885][ T8874] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.935861][ T8874] Kernel panic - not syncing: Fatal exception [ 67.943470][ T8874] Kernel Offset: disabled [ 67.947786][ T8874] Rebooting in 86400 seconds..