[ 40.188493][ T26] audit: type=1800 audit(1574306832.177:25): pid=7729 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 40.223174][ T26] audit: type=1800 audit(1574306832.177:26): pid=7729 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 40.260714][ T26] audit: type=1800 audit(1574306832.187:27): pid=7729 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 40.282517][ T26] audit: type=1800 audit(1574306832.187:28): pid=7729 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 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 '10.128.0.69' (ECDSA) to the list of known hosts. syzkaller login: [ 52.904061][ T7882] IPVS: ftp: loaded support on port[0] = 21 [ 52.955794][ T7882] chnl_net:caif_netlink_parms(): no params data found [ 52.979552][ T7882] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.987454][ T7882] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.995150][ T7882] device bridge_slave_0 entered promiscuous mode [ 53.002979][ T7882] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.010177][ T7882] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.017811][ T7882] device bridge_slave_1 entered promiscuous mode [ 53.032276][ T7882] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 53.042993][ T7882] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 53.060250][ T7882] team0: Port device team_slave_0 added [ 53.068058][ T7882] team0: Port device team_slave_1 added [ 53.134987][ T7882] device hsr_slave_0 entered promiscuous mode [ 53.183703][ T7882] device hsr_slave_1 entered promiscuous mode [ 53.304518][ T7882] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.311714][ T7882] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.319568][ T7882] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.326701][ T7882] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.388290][ T7882] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.422606][ T2840] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.454480][ T2840] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.493912][ T2840] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.515223][ T2840] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 53.549142][ T7882] 8021q: adding VLAN 0 to HW filter on device team0 [ 53.577722][ T2840] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.593929][ T2840] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.601026][ T2840] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.657488][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 53.667422][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.674554][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.705374][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 53.734252][ T7882] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 53.763997][ T7882] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 53.787414][ T7907] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 53.798257][ T7907] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 53.813013][ T7907] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.827508][ T7907] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 53.845829][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 53.854337][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready executing program [ 53.861748][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 53.874432][ T7882] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 55.166781][ C1] vcan0: j1939_tp_rxtimer: 0x000000009832a0a3: rx timeout, send abort [ 55.175717][ C1] vcan0: j1939_xtp_rx_abort_one: 0x000000009832a0a3: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. [ 55.190471][ C1] ------------[ cut here ]------------ [ 55.196011][ C1] WARNING: CPU: 1 PID: 16 at net/can/j1939/socket.c:180 j1939_sk_queue_activate_next+0x2ae/0x390 [ 55.206480][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 55.213070][ C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-rc8-syzkaller #0 [ 55.221195][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.231226][ C1] Call Trace: [ 55.234505][ C1] dump_stack+0x1fb/0x318 [ 55.238826][ C1] panic+0x264/0x7a9 [ 55.242698][ C1] ? __warn+0x105/0x210 [ 55.246831][ C1] ? j1939_sk_queue_activate_next+0x2ae/0x390 [ 55.252866][ C1] __warn+0x20e/0x210 [ 55.256844][ C1] ? j1939_sk_queue_activate_next+0x2ae/0x390 [ 55.262931][ C1] report_bug+0x1b6/0x2f0 [ 55.267249][ C1] ? j1939_sk_queue_activate_next+0x2ae/0x390 [ 55.273302][ C1] do_error_trap+0xd7/0x440 [ 55.277787][ C1] do_invalid_op+0x36/0x40 [ 55.282176][ C1] ? j1939_sk_queue_activate_next+0x2ae/0x390 [ 55.288216][ C1] invalid_op+0x23/0x30 [ 55.292343][ C1] RIP: 0010:j1939_sk_queue_activate_next+0x2ae/0x390 [ 55.298990][ C1] Code: 4c 39 f8 4c 8d 60 e8 b8 00 00 00 00 4c 0f 44 e0 4d 85 e4 0f 84 a0 00 00 00 4c 89 e7 e8 eb 67 00 00 85 c0 74 43 e8 42 12 c3 fa <0f> 0b 4c 89 e9 4d 8d ac 24 c8 00 00 00 4c 89 e8 48 c1 e8 03 0f b6 [ 55.318584][ C1] RSP: 0018:ffff8880a98f7908 EFLAGS: 00010206 [ 55.324630][ C1] RAX: ffffffff86b0648e RBX: 1ffff1101361c2a9 RCX: ffff8880a98de440 [ 55.332578][ C1] RDX: 0000000080000301 RSI: 0000000000000008 RDI: ffff8880a98dec84 [ 55.340543][ C1] RBP: ffff8880a98f7948 R08: ffff8880a98dec98 R09: fffffbfff12bc2b4 [ 55.348501][ C1] R10: fffffbfff12bc2b4 R11: 0000000000000000 R12: ffff88809544bc00 [ 55.356456][ C1] R13: dffffc0000000000 R14: ffff88809b0e1510 R15: ffff88809b0e1548 [ 55.364481][ C1] ? j1939_sk_queue_activate_next+0x2ae/0x390 [ 55.370524][ C1] ? j1939_sk_queue_activate_next+0x2ae/0x390 [ 55.376566][ C1] j1939_xtp_rx_abort_one+0x344/0x3f0 [ 55.381914][ C1] j1939_tp_recv+0x633/0xb80 [ 55.386480][ C1] j1939_can_recv+0x463/0x7f0 [ 55.391144][ C1] ? j1939_send_one+0x3e0/0x3e0 [ 55.395977][ C1] can_rcv_filter+0x3c0/0x8b0 [ 55.400629][ C1] can_receive+0x2ac/0x3b0 [ 55.405024][ C1] can_rcv+0xe4/0x220 [ 55.408977][ C1] ? rcu_lock_release+0x30/0x30 [ 55.413807][ C1] __netif_receive_skb+0x136/0x370 [ 55.418901][ C1] process_backlog+0x4d8/0x930 [ 55.423645][ C1] net_rx_action+0x5ef/0x10d0 [ 55.428302][ C1] __do_softirq+0x333/0x7c4 [ 55.432778][ C1] ? run_ksoftirqd+0x64/0xf0 [ 55.437349][ C1] run_ksoftirqd+0x64/0xf0 [ 55.441737][ C1] ? ksoftirqd_should_run+0x20/0x20 [ 55.446906][ C1] smpboot_thread_fn+0x5b3/0x9a0 [ 55.451821][ C1] kthread+0x332/0x350 [ 55.455859][ C1] ? cpu_report_death+0x120/0x120 [ 55.460856][ C1] ? kthread_blkcg+0xe0/0xe0 [ 55.465432][ C1] ret_from_fork+0x24/0x30 [ 55.471220][ C1] Kernel Offset: disabled [ 55.475593][ C1] Rebooting in 86400 seconds..