[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 53.965740][ T26] audit: type=1800 audit(1568655680.131:25): pid=8526 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 54.013581][ T26] audit: type=1800 audit(1568655680.131:26): pid=8526 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 54.057892][ T26] audit: type=1800 audit(1568655680.131:27): pid=8526 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 '10.128.0.225' (ECDSA) to the list of known hosts. syzkaller login: [ 65.398613][ T8681] IPVS: ftp: loaded support on port[0] = 21 [ 65.450690][ T8681] chnl_net:caif_netlink_parms(): no params data found [ 65.478019][ T8681] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.486214][ T8681] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.494265][ T8681] device bridge_slave_0 entered promiscuous mode [ 65.503666][ T8681] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.510815][ T8681] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.518748][ T8681] device bridge_slave_1 entered promiscuous mode [ 65.535658][ T8681] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.546185][ T8681] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.565547][ T8681] team0: Port device team_slave_0 added [ 65.572192][ T8681] team0: Port device team_slave_1 added [ 65.654561][ T8681] device hsr_slave_0 entered promiscuous mode [ 65.723275][ T8681] device hsr_slave_1 entered promiscuous mode [ 65.800169][ T8681] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.807362][ T8681] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.815174][ T8681] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.822322][ T8681] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.856320][ T8681] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.867396][ T8683] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 65.887890][ T8683] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.896200][ T8683] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.905515][ T8683] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 65.916583][ T8681] 8021q: adding VLAN 0 to HW filter on device team0 [ 65.927009][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.936523][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.943710][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.963565][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.972011][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.979273][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.988446][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.997282][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.006991][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 66.019955][ T8681] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 66.030864][ T8681] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 66.043922][ T8683] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 66.052804][ T8683] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 66.061054][ T8683] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 66.078522][ T8681] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.111693][ T8681] netlink: 'syz-executor028': attribute type 1 has an invalid length. [ 66.120064][ T8681] kasan: CONFIG_KASAN_INLINE enabled [ 66.127530][ T8681] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 66.135691][ T8681] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 66.142632][ T8681] CPU: 0 PID: 8681 Comm: syz-executor028 Not tainted 5.3.0-rc8+ #0 [ 66.150512][ T8681] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.160562][ T8681] RIP: 0010:qdisc_put+0x25/0x90 [ 66.165392][ T8681] Code: 00 00 00 00 00 55 48 89 e5 41 54 49 89 fc 53 e8 41 ad bd fb 49 8d 7c 24 10 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 04 3c 03 7e 54 41 8b 5c 24 10 31 ff 83 e3 01 [ 66.184976][ T8681] RSP: 0018:ffff8880a881f480 EFLAGS: 00010202 [ 66.191017][ T8681] RAX: dffffc0000000000 RBX: ffff8880a7cc2dc0 RCX: 0000000000000006 [ 66.198964][ T8681] RDX: 0000000000000002 RSI: ffffffff85b4d7bf RDI: 0000000000000010 [ 66.206975][ T8681] RBP: ffff8880a881f490 R08: 1ffffffff14e9743 R09: fffffbfff14e9744 [ 66.214931][ T8681] R10: fffffbfff14e9743 R11: ffffffff8a74ba1f R12: 0000000000000000 [ 66.222886][ T8681] R13: ffff8880a7cc2dc0 R14: ffff888098e6e540 R15: ffff8880a7cc2dfc [ 66.231806][ T8681] FS: 0000555556016880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 66.240713][ T8681] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.247275][ T8681] CR2: 0000000020000610 CR3: 00000000a8ed6000 CR4: 00000000001406f0 [ 66.255232][ T8681] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.263179][ T8681] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.271123][ T8681] Call Trace: [ 66.274402][ T8681] dsmark_destroy+0x63/0xd0 [ 66.278889][ T8681] ? dsmark_peek+0x90/0x90 [ 66.283291][ T8681] qdisc_create+0xbc6/0x1210 [ 66.287855][ T8681] ? tc_get_qdisc+0xc10/0xc10 [ 66.292510][ T8681] ? __nla_parse+0x43/0x60 [ 66.296904][ T8681] tc_modify_qdisc+0x524/0x1c50 [ 66.301733][ T8681] ? qdisc_create+0x1210/0x1210 [ 66.306567][ T8681] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 66.312801][ T8681] ? qdisc_create+0x1210/0x1210 [ 66.317636][ T8681] rtnetlink_rcv_msg+0x463/0xb00 [ 66.322553][ T8681] ? rtnetlink_put_metrics+0x580/0x580 [ 66.328016][ T8681] ? netlink_deliver_tap+0x22d/0xbf0 [ 66.333278][ T8681] ? find_held_lock+0x35/0x130 [ 66.338020][ T8681] netlink_rcv_skb+0x177/0x450 [ 66.342886][ T8681] ? rtnetlink_put_metrics+0x580/0x580 [ 66.348341][ T8681] ? netlink_ack+0xb30/0xb30 [ 66.352915][ T8681] ? __kasan_check_read+0x11/0x20 [ 66.357932][ T8681] ? netlink_deliver_tap+0x254/0xbf0 [ 66.363199][ T8681] rtnetlink_rcv+0x1d/0x30 [ 66.367590][ T8681] netlink_unicast+0x531/0x710 [ 66.372337][ T8681] ? netlink_attachskb+0x7c0/0x7c0 [ 66.377425][ T8681] ? _copy_from_iter_full+0x25d/0x8a0 [ 66.382774][ T8681] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 66.388469][ T8681] ? __check_object_size+0x3d/0x437 [ 66.393651][ T8681] netlink_sendmsg+0x8a5/0xd60 [ 66.398394][ T8681] ? netlink_unicast+0x710/0x710 [ 66.403307][ T8681] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 66.408830][ T8681] ? apparmor_socket_sendmsg+0x2a/0x30 [ 66.414277][ T8681] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 66.420490][ T8681] ? security_socket_sendmsg+0x8d/0xc0 [ 66.425924][ T8681] ? netlink_unicast+0x710/0x710 [ 66.430838][ T8681] sock_sendmsg+0xd7/0x130 [ 66.435233][ T8681] ___sys_sendmsg+0x803/0x920 [ 66.439887][ T8681] ? copy_msghdr_from_user+0x440/0x440 [ 66.445328][ T8681] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 66.451558][ T8681] ? tomoyo_path_number_perm+0x263/0x520 [ 66.457172][ T8681] ? sock_ioctl+0x489/0x780 [ 66.461653][ T8681] ? dlci_ioctl_set+0x40/0x40 [ 66.466329][ T8681] ? __do_page_fault+0x56a/0xdd0 [ 66.471243][ T8681] ? dlci_ioctl_set+0x40/0x40 [ 66.475904][ T8681] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 66.482135][ T8681] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 66.488364][ T8681] ? __fget_light+0x1a9/0x230 [ 66.493035][ T8681] ? __fdget+0x1b/0x20 [ 66.497081][ T8681] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 66.503302][ T8681] __sys_sendmsg+0x105/0x1d0 [ 66.507868][ T8681] ? __sys_sendmsg_sock+0xd0/0xd0 [ 66.512884][ T8681] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 66.518334][ T8681] ? do_syscall_64+0x26/0x6a0 [ 66.522987][ T8681] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 66.529028][ T8681] ? do_syscall_64+0x26/0x6a0 [ 66.533682][ T8681] __x64_sys_sendmsg+0x78/0xb0 [ 66.538433][ T8681] do_syscall_64+0xfd/0x6a0 [ 66.542919][ T8681] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 66.548784][ T8681] RIP: 0033:0x441b19 [ 66.552674][ T8681] 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 [ 66.572263][ T8681] RSP: 002b:00007ffd19e38a08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 66.580653][ T8681] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441b19 [ 66.588600][ T8681] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 66.596544][ T8681] RBP: 00007ffd19e38a20 R08: 0000000001bbbbbb R09: 0000000001bbbbbb [ 66.604490][ T8681] R10: 0000000001bbbbbb R11: 0000000000000246 R12: 0000000000000000 [ 66.612443][ T8681] R13: 00000000004030b0 R14: 0000000000000000 R15: 0000000000000000 [ 66.620412][ T8681] Modules linked in: [ 66.626179][ T8681] ---[ end trace bce20963f63989ec ]--- [ 66.631653][ T8681] RIP: 0010:qdisc_put+0x25/0x90 [ 66.636778][ T8681] Code: 00 00 00 00 00 55 48 89 e5 41 54 49 89 fc 53 e8 41 ad bd fb 49 8d 7c 24 10 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 04 3c 03 7e 54 41 8b 5c 24 10 31 ff 83 e3 01 [ 66.656813][ T8681] RSP: 0018:ffff8880a881f480 EFLAGS: 00010202 [ 66.663101][ T8681] RAX: dffffc0000000000 RBX: ffff8880a7cc2dc0 RCX: 0000000000000006 [ 66.671063][ T8681] RDX: 0000000000000002 RSI: ffffffff85b4d7bf RDI: 0000000000000010 [ 66.679104][ T8681] RBP: ffff8880a881f490 R08: 1ffffffff14e9743 R09: fffffbfff14e9744 [ 66.687096][ T8681] R10: fffffbfff14e9743 R11: ffffffff8a74ba1f R12: 0000000000000000 [ 66.695079][ T8681] R13: ffff8880a7cc2dc0 R14: ffff888098e6e540 R15: ffff8880a7cc2dfc [ 66.703066][ T8681] FS: 0000555556016880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 66.711969][ T8681] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.718561][ T8681] CR2: 0000000020000610 CR3: 00000000a8ed6000 CR4: 00000000001406f0 [ 66.726567][ T8681] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.734558][ T8681] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.742523][ T8681] Kernel panic - not syncing: Fatal exception [ 66.750160][ T8681] Kernel Offset: disabled [ 66.754507][ T8681] Rebooting in 86400 seconds..