[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 56.604974][ T26] audit: type=1800 audit(1573414190.218:25): pid=8602 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 56.645910][ T26] audit: type=1800 audit(1573414190.228:26): pid=8602 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 56.686732][ T26] audit: type=1800 audit(1573414190.228:27): pid=8602 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 '10.128.0.27' (ECDSA) to the list of known hosts. 2019/11/10 19:30:00 parsed 1 programs 2019/11/10 19:30:02 executed programs: 0 syzkaller login: [ 69.067732][ T8768] IPVS: ftp: loaded support on port[0] = 21 [ 69.128273][ T8768] chnl_net:caif_netlink_parms(): no params data found [ 69.154981][ T8768] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.162957][ T8768] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.170771][ T8768] device bridge_slave_0 entered promiscuous mode [ 69.178851][ T8768] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.186042][ T8768] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.193677][ T8768] device bridge_slave_1 entered promiscuous mode [ 69.211785][ T8768] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.222498][ T8768] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.242005][ T8768] team0: Port device team_slave_0 added [ 69.249627][ T8768] team0: Port device team_slave_1 added [ 69.318364][ T8768] device hsr_slave_0 entered promiscuous mode [ 69.386072][ T8768] device hsr_slave_1 entered promiscuous mode [ 69.491369][ T8768] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.498616][ T8768] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.506346][ T8768] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.513431][ T8768] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.609668][ T8768] 8021q: adding VLAN 0 to HW filter on device bond0 [ 69.640884][ T3018] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.697520][ T3018] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.736405][ T3018] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.768869][ T3018] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 69.800485][ T8768] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.856487][ T3637] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.865131][ T3637] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.872291][ T3637] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.938199][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 69.966799][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.973906][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.016724][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 70.025470][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 70.076562][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 70.090355][ T8768] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 70.127256][ T8768] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 70.149438][ T8797] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 70.158633][ T8797] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 70.207194][ T8797] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 70.214657][ T8797] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 70.250953][ T8768] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.642440][ C1] vcan0: j1939_tp_rxtimer: 0x00000000bf65796b: rx timeout, send abort [ 71.651383][ C1] vcan0: j1939_xtp_rx_abort_one: 0x00000000bf65796b: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. [ 72.944728][ C1] vcan0: j1939_tp_rxtimer: 0x000000006f2c6f42: rx timeout, send abort [ 72.953088][ C1] vcan0: j1939_xtp_rx_abort_one: 0x000000006f2c6f42: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. 2019/11/10 19:30:07 executed programs: 2 [ 74.219108][ C0] vcan0: j1939_tp_rxtimer: 0x000000005f5150cf: rx timeout, send abort [ 74.227743][ C0] vcan0: j1939_xtp_rx_abort_one: 0x000000005f5150cf: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. [ 75.513508][ C1] vcan0: j1939_tp_rxtimer: 0x0000000047808cb3: rx timeout, send abort [ 75.522289][ C1] vcan0: j1939_xtp_rx_abort_one: 0x0000000047808cb3: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. [ 76.807820][ C1] vcan0: j1939_tp_rxtimer: 0x00000000be97c58c: rx timeout, send abort [ 76.816267][ C1] vcan0: j1939_xtp_rx_abort_one: 0x00000000be97c58c: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. [ 78.082071][ C0] vcan0: j1939_tp_rxtimer: 0x00000000550b4734: rx timeout, send abort [ 78.090709][ C0] vcan0: j1939_xtp_rx_abort_one: 0x00000000550b4734: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. [ 79.378168][ C1] vcan0: j1939_tp_rxtimer: 0x0000000073cd5f63: rx timeout, send abort [ 79.386609][ C1] vcan0: j1939_xtp_rx_abort_one: 0x0000000073cd5f63: 0x00000: (3) A timeout occurred and this is the connection abort to close the session. [ 79.401913][ T8830] kasan: CONFIG_KASAN_INLINE enabled [ 79.408525][ T8830] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 79.416660][ T8830] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 79.423610][ T8830] CPU: 1 PID: 8830 Comm: syz-executor.0 Not tainted 5.4.0-rc6+ #0 [ 79.431388][ T8830] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.441451][ T8830] RIP: 0010:j1939_sk_sendmsg+0x6d6/0x1450 [ 79.447153][ T8830] Code: e8 1f f1 f3 fa 48 8b 8d 50 ff ff ff b8 f9 06 00 00 48 81 f9 f9 06 00 00 48 0f 46 c1 48 89 85 60 ff ff ff 48 8b 85 20 ff ff ff <80> 38 00 0f 85 fa 0a 00 00 48 8b 85 40 ff ff ff 48 8b 58 48 48 8b [ 79.468742][ T8830] RSP: 0018:ffff888096a47a28 EFLAGS: 00010283 [ 79.474800][ T8830] RAX: dffffc0000000009 RBX: 0000000000000009 RCX: 0000000000000009 [ 79.482753][ T8830] RDX: 0000000000000000 RSI: ffffffff867f33c1 RDI: 0000000000000007 [ 79.490710][ T8830] RBP: ffff888096a47b40 R08: ffff88809791c3c0 R09: 0000000000000000 [ 79.498665][ T8830] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 79.506631][ T8830] R13: ffff8880a589d510 R14: 0000000000000000 R15: 0000000000000000 [ 79.514865][ T8830] FS: 00007fcf544e2700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 79.523770][ T8830] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.530340][ T8830] CR2: 0000000002122e80 CR3: 00000000a7eaa000 CR4: 00000000001406e0 [ 79.538300][ T8830] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 79.546263][ T8830] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 79.554279][ T8830] Call Trace: [ 79.557561][ T8830] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 79.563213][ T8830] ? j1939_sk_recv_match_one+0x780/0x780 [ 79.568864][ T8830] ? apparmor_socket_sendmsg+0x2a/0x30 [ 79.574315][ T8830] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.580547][ T8830] ? security_socket_sendmsg+0x8d/0xc0 [ 79.585987][ T8830] ? j1939_sk_recv_match_one+0x780/0x780 [ 79.591600][ T8830] sock_sendmsg+0xd7/0x130 [ 79.596007][ T8830] ___sys_sendmsg+0x803/0x920 [ 79.600679][ T8830] ? copy_msghdr_from_user+0x440/0x440 [ 79.606132][ T8830] ? __kasan_check_read+0x11/0x20 [ 79.611136][ T8830] ? __fget+0x384/0x560 [ 79.615272][ T8830] ? ksys_dup3+0x3e0/0x3e0 [ 79.619666][ T8830] ? __fget_light+0x1a9/0x230 [ 79.624333][ T8830] ? __fdget+0x1b/0x20 [ 79.628399][ T8830] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 79.634709][ T8830] __sys_sendmsg+0x105/0x1d0 [ 79.639279][ T8830] ? __sys_sendmsg_sock+0xd0/0xd0 [ 79.644294][ T8830] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 79.649828][ T8830] ? do_syscall_64+0x26/0x760 [ 79.654482][ T8830] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 79.660547][ T8830] ? do_syscall_64+0x26/0x760 [ 79.665238][ T8830] __x64_sys_sendmsg+0x78/0xb0 [ 79.670016][ T8830] do_syscall_64+0xfa/0x760 [ 79.674502][ T8830] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 79.680423][ T8830] RIP: 0033:0x45a219 [ 79.684355][ T8830] Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 79.703947][ T8830] RSP: 002b:00007fcf544e1c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 79.712439][ T8830] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a219 [ 79.720410][ T8830] RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000003 [ 79.728365][ T8830] RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 [ 79.736317][ T8830] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcf544e26d4 [ 79.744295][ T8830] R13: 00000000004c8692 R14: 00000000004dec20 R15: 00000000ffffffff [ 79.752257][ T8830] Modules linked in: [ 79.756737][ T8830] ---[ end trace e8868c7fee947331 ]--- [ 79.762211][ T8830] RIP: 0010:j1939_sk_sendmsg+0x6d6/0x1450 [ 79.767963][ T8830] Code: e8 1f f1 f3 fa 48 8b 8d 50 ff ff ff b8 f9 06 00 00 48 81 f9 f9 06 00 00 48 0f 46 c1 48 89 85 60 ff ff ff 48 8b 85 20 ff ff ff <80> 38 00 0f 85 fa 0a 00 00 48 8b 85 40 ff ff ff 48 8b 58 48 48 8b [ 79.787647][ T8830] RSP: 0018:ffff888096a47a28 EFLAGS: 00010283 [ 79.793736][ T8830] RAX: dffffc0000000009 RBX: 0000000000000009 RCX: 0000000000000009 [ 79.801728][ T8830] RDX: 0000000000000000 RSI: ffffffff867f33c1 RDI: 0000000000000007 [ 79.809734][ T8830] RBP: ffff888096a47b40 R08: ffff88809791c3c0 R09: 0000000000000000 [ 79.817783][ T8830] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 79.825802][ T8830] R13: ffff8880a589d510 R14: 0000000000000000 R15: 0000000000000000 [ 79.833765][ T8830] FS: 00007fcf544e2700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 79.842729][ T8830] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.849392][ T8830] CR2: 0000000002122e80 CR3: 00000000a7eaa000 CR4: 00000000001406e0 [ 79.857495][ T8830] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 79.865456][ T8830] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 79.873644][ T8830] Kernel panic - not syncing: Fatal exception [ 79.880990][ T8830] Kernel Offset: disabled [ 79.885315][ T8830] Rebooting in 86400 seconds..