[?25l[?1c7[ ok 8[?25h[?0c. [ 70.040000] audit: type=1800 audit(1549490781.088:25): pid=9402 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 70.059080] audit: type=1800 audit(1549490781.088:26): pid=9402 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 70.078443] audit: type=1800 audit(1549490781.088:27): pid=9402 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 '10.128.0.86' (ECDSA) to the list of known hosts. syzkaller login: [ 226.960446] IPVS: ftp: loaded support on port[0] = 21 [ 227.027799] chnl_net:caif_netlink_parms(): no params data found [ 227.066876] bridge0: port 1(bridge_slave_0) entered blocking state [ 227.073390] bridge0: port 1(bridge_slave_0) entered disabled state [ 227.080777] device bridge_slave_0 entered promiscuous mode [ 227.088241] bridge0: port 2(bridge_slave_1) entered blocking state [ 227.094753] bridge0: port 2(bridge_slave_1) entered disabled state [ 227.102314] device bridge_slave_1 entered promiscuous mode [ 227.121798] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 227.131282] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 227.149810] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 227.157657] team0: Port device team_slave_0 added [ 227.163597] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 227.171068] team0: Port device team_slave_1 added [ 227.176727] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 227.184337] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 227.244372] device hsr_slave_0 entered promiscuous mode [ 227.302282] device hsr_slave_1 entered promiscuous mode [ 227.362803] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 227.369935] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 227.386953] bridge0: port 2(bridge_slave_1) entered blocking state [ 227.393428] bridge0: port 2(bridge_slave_1) entered forwarding state [ 227.400222] bridge0: port 1(bridge_slave_0) entered blocking state [ 227.406682] bridge0: port 1(bridge_slave_0) entered forwarding state [ 227.453828] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 227.459940] 8021q: adding VLAN 0 to HW filter on device bond0 [ 227.469394] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 227.480176] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 227.489310] bridge0: port 1(bridge_slave_0) entered disabled state [ 227.496955] bridge0: port 2(bridge_slave_1) entered disabled state [ 227.505290] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 227.517070] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 227.523266] 8021q: adding VLAN 0 to HW filter on device team0 [ 227.533149] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 227.540929] bridge0: port 1(bridge_slave_0) entered blocking state [ 227.547397] bridge0: port 1(bridge_slave_0) entered forwarding state [ 227.558582] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 227.566738] bridge0: port 2(bridge_slave_1) entered blocking state [ 227.573196] bridge0: port 2(bridge_slave_1) entered forwarding state [ 227.594679] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 227.603550] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 227.616271] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 227.627841] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 227.640693] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 227.651740] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 227.658155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 227.667427] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 227.683742] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 227.695859] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 233.544156] ================================================================== [ 233.551581] BUG: KMSAN: uninit-value in gue_err+0x482/0xb00 [ 233.557302] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.0.0-rc1+ #9 [ 233.563968] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 233.573322] Call Trace: [ 233.575921] dump_stack+0x173/0x1d0 [ 233.579565] kmsan_report+0x12e/0x2a0 [ 233.583388] __msan_warning+0x82/0xf0 [ 233.587211] gue_err+0x482/0xb00 executing program executing program [ 233.590612] ? fou_build_header+0x690/0x690 [ 233.594941] __udp4_lib_err+0x12e6/0x1d40 [ 233.599126] udp_err+0x74/0x90 [ 233.602336] ? __udp4_lib_err+0x1d40/0x1d40 [ 233.607184] icmp_unreach+0xb65/0x1070 [ 233.611115] ? icmp_discard+0x30/0x30 [ 233.614923] icmp_rcv+0x11a1/0x1950 [ 233.618574] ? local_bh_enable+0x40/0x40 [ 233.622644] ip_protocol_deliver_rcu+0x584/0xba0 [ 233.627423] ip_local_deliver+0x624/0x7b0 [ 233.631686] ? ip_local_deliver+0x7b0/0x7b0 [ 233.636003] ? ip_protocol_deliver_rcu+0xba0/0xba0 [ 233.640936] ip_rcv+0x6b6/0x740 executing program executing program executing program [ 233.644242] ? ip_rcv_core+0x11c0/0x11c0 [ 233.648322] process_backlog+0x756/0x10e0 [ 233.652497] ? ip_local_deliver_finish+0x320/0x320 [ 233.657445] ? rps_trigger_softirq+0x2e0/0x2e0 [ 233.662032] net_rx_action+0x78b/0x1a60 [ 233.666052] ? net_tx_action+0xca0/0xca0 [ 233.670120] __do_softirq+0x53f/0x93a [ 233.673940] ? ksoftirqd_should_run+0x30/0x30 [ 233.678449] run_ksoftirqd+0x26/0x50 [ 233.682174] smpboot_thread_fn+0x4d0/0x9f0 [ 233.686442] kthread+0x4a1/0x4e0 [ 233.689824] ? cpu_report_death+0x190/0x190 executing program executing program [ 233.694149] ? schedule_tail+0x1b2/0x410 [ 233.698244] ? kthread_blkcg+0xf0/0xf0 [ 233.702145] ret_from_fork+0x35/0x40 [ 233.705867] [ 233.707507] Uninit was created at: [ 233.711061] kmsan_internal_poison_shadow+0x92/0x150 [ 233.716173] kmsan_kmalloc+0xa6/0x130 [ 233.719976] kmsan_slab_alloc+0xe/0x10 [ 233.723870] __kmalloc_node_track_caller+0xe9e/0xff0 [ 233.728975] __alloc_skb+0x309/0xa20 [ 233.732694] alloc_skb_with_frags+0x1c7/0xac0 [ 233.737192] sock_alloc_send_pskb+0xafd/0x10a0 [ 233.741784] sock_alloc_send_skb+0xca/0xe0 [ 233.746021] __ip_append_data+0x34cd/0x5000 [ 233.750352] ip_append_data+0x324/0x480 [ 233.754329] icmp_push_reply+0x23d/0x7e0 [ 233.758390] icmp_send+0x2e74/0x30c0 [ 233.762104] __udp4_lib_rcv+0x36c9/0x4b70 [ 233.766268] udp_rcv+0x5c/0x70 [ 233.769478] ip_protocol_deliver_rcu+0x584/0xba0 [ 233.774245] ip_local_deliver+0x624/0x7b0 [ 233.778393] ip_rcv+0x6b6/0x740 [ 233.781675] process_backlog+0x756/0x10e0 [ 233.785837] net_rx_action+0x78b/0x1a60 [ 233.789832] __do_softirq+0x53f/0x93a [ 233.793629] ================================================================== [ 233.800992] Disabling lock debugging due to kernel taint [ 233.806448] Kernel panic - not syncing: panic_on_warn set ... [ 233.812348] CPU: 1 PID: 16 Comm: ksoftirqd/1 Tainted: G B 5.0.0-rc1+ #9 [ 233.820404] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 233.829925] Call Trace: [ 233.832522] dump_stack+0x173/0x1d0 [ 233.836169] panic+0x3d1/0xb01 [ 233.839397] kmsan_report+0x293/0x2a0 [ 233.843234] __msan_warning+0x82/0xf0 [ 233.847048] gue_err+0x482/0xb00 [ 233.850434] ? fou_build_header+0x690/0x690 [ 233.854765] __udp4_lib_err+0x12e6/0x1d40 [ 233.858943] udp_err+0x74/0x90 [ 233.862144] ? __udp4_lib_err+0x1d40/0x1d40 [ 233.866472] icmp_unreach+0xb65/0x1070 [ 233.870389] ? icmp_discard+0x30/0x30 [ 233.874209] icmp_rcv+0x11a1/0x1950 [ 233.877871] ? local_bh_enable+0x40/0x40 [ 233.881982] ip_protocol_deliver_rcu+0x584/0xba0 [ 233.886767] ip_local_deliver+0x624/0x7b0 [ 233.890939] ? ip_local_deliver+0x7b0/0x7b0 [ 233.895274] ? ip_protocol_deliver_rcu+0xba0/0xba0 [ 233.900213] ip_rcv+0x6b6/0x740 [ 233.903522] ? ip_rcv_core+0x11c0/0x11c0 [ 233.907600] process_backlog+0x756/0x10e0 [ 233.911779] ? ip_local_deliver_finish+0x320/0x320 [ 233.916720] ? rps_trigger_softirq+0x2e0/0x2e0 [ 233.921316] net_rx_action+0x78b/0x1a60 [ 233.925311] ? net_tx_action+0xca0/0xca0 [ 233.929385] __do_softirq+0x53f/0x93a [ 233.933206] ? ksoftirqd_should_run+0x30/0x30 [ 233.937716] run_ksoftirqd+0x26/0x50 [ 233.941444] smpboot_thread_fn+0x4d0/0x9f0 [ 233.945704] kthread+0x4a1/0x4e0 [ 233.949079] ? cpu_report_death+0x190/0x190 [ 233.953420] ? schedule_tail+0x1b2/0x410 [ 233.957495] ? kthread_blkcg+0xf0/0xf0 [ 233.961392] ret_from_fork+0x35/0x40 [ 233.966274] Kernel Offset: disabled [ 233.969895] Rebooting in 86400 seconds..