[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 57.111266][ T26] audit: type=1800 audit(1572976310.301:25): pid=8610 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 57.168566][ T26] audit: type=1800 audit(1572976310.301:26): pid=8610 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 57.211937][ T26] audit: type=1800 audit(1572976310.311:27): pid=8610 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 '10.128.0.73' (ECDSA) to the list of known hosts. 2019/11/05 17:52:08 parsed 1 programs 2019/11/05 17:52:09 executed programs: 0 syzkaller login: [ 76.870428][ T8777] IPVS: ftp: loaded support on port[0] = 21 [ 76.933330][ T8777] chnl_net:caif_netlink_parms(): no params data found [ 76.961410][ T8777] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.968596][ T8777] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.976582][ T8777] device bridge_slave_0 entered promiscuous mode [ 76.985393][ T8777] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.992579][ T8777] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.000807][ T8777] device bridge_slave_1 entered promiscuous mode [ 77.016949][ T8777] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 77.027970][ T8777] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 77.047395][ T8777] team0: Port device team_slave_0 added [ 77.054873][ T8777] team0: Port device team_slave_1 added [ 77.121159][ T8777] device hsr_slave_0 entered promiscuous mode [ 77.188697][ T8777] device hsr_slave_1 entered promiscuous mode [ 77.330469][ T8777] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.337718][ T8777] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.346605][ T8777] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.353849][ T8777] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.428067][ T8777] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.444672][ T2846] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 77.490552][ T2846] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.518025][ T2846] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.541747][ T2846] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 77.574518][ T8777] 8021q: adding VLAN 0 to HW filter on device team0 [ 77.619374][ T2846] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 77.627901][ T2846] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.635060][ T2846] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.702887][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 77.719909][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.727008][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.781099][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 77.811165][ T2846] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 77.820984][ T2846] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 77.849195][ T2846] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 77.880323][ T2846] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 77.910842][ T8777] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 77.957652][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 77.981685][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.002268][ T8777] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.229196][ T8817] kasan: CONFIG_KASAN_INLINE enabled [ 78.234656][ T8817] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 78.242919][ T8817] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 78.249863][ T8817] CPU: 0 PID: 8817 Comm: syz-executor.0 Not tainted 5.4.0-rc6 #0 [ 78.259226][ T8817] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.269299][ T8817] RIP: 0010:j1939_priv_get_by_ndev_locked+0xf5/0x190 [ 78.275977][ T8817] Code: 03 80 3c 02 00 0f 85 ae 00 00 00 48 8b 9b 88 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 28 60 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 7f 4c 8b a3 28 60 00 00 4d 85 e4 74 12 e8 a4 5d f4 [ 78.295586][ T8817] RSP: 0018:ffff88809405f980 EFLAGS: 00010206 [ 78.301665][ T8817] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff867ec4c7 [ 78.309648][ T8817] RDX: 0000000000000c05 RSI: ffffffff867ec4d4 RDI: 0000000000006028 [ 78.317807][ T8817] RBP: ffff88809405f998 R08: ffff88809324c500 R09: ffffed101280bf23 [ 78.325781][ T8817] R10: ffffed101280bf22 R11: 0000000000000003 R12: 0000000000000000 [ 78.333934][ T8817] R13: 0000000000000118 R14: dffffc0000000000 R15: 0000000000000000 [ 78.341915][ T8817] FS: 00000000018e2940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 78.350847][ T8817] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.358373][ T8817] CR2: 00007ffd98403dbc CR3: 00000000a7cca000 CR4: 00000000001406f0 [ 78.366350][ T8817] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.374329][ T8817] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.382304][ T8817] Call Trace: [ 78.385605][ T8817] j1939_netdev_notify+0x47/0x120 [ 78.390638][ T8817] notifier_call_chain+0xc2/0x230 [ 78.395670][ T8817] raw_notifier_call_chain+0x2e/0x40 [ 78.400955][ T8817] call_netdevice_notifiers_info+0x3f/0x90 [ 78.406783][ T8817] rollback_registered_many+0x9b9/0xfc0 [ 78.412330][ T8817] ? generic_xdp_install+0x4a0/0x4a0 [ 78.417622][ T8817] ? rtnl_lock+0x17/0x20 [ 78.421868][ T8817] ? mutex_trylock+0x2d0/0x2d0 [ 78.426732][ T8817] ? lockdep_hardirqs_on+0x421/0x5e0 [ 78.432026][ T8817] rollback_registered+0x109/0x1d0 [ 78.437136][ T8817] ? rollback_registered_many+0xfc0/0xfc0 [ 78.442861][ T8817] ? try_to_del_timer_sync+0xc1/0x110 [ 78.448266][ T8817] unregister_netdevice_queue+0x1ee/0x2c0 [ 78.454007][ T8817] unregister_netdev+0x1d/0x30 [ 78.459445][ T8817] slip_close+0x16d/0x1d0 [ 78.463770][ T8817] ? sl_bump+0x5a0/0x5a0 [ 78.468004][ T8817] tty_ldisc_close.isra.0+0x119/0x1a0 [ 78.473354][ T8817] tty_ldisc_kill+0x9c/0x160 [ 78.477943][ T8817] tty_ldisc_release+0xe9/0x2b0 [ 78.482772][ T8817] tty_release_struct+0x1b/0x50 [ 78.487616][ T8817] tty_release+0xbcb/0xe90 [ 78.492015][ T8817] __fput+0x2ff/0x890 [ 78.495974][ T8817] ? put_tty_driver+0x20/0x20 [ 78.500655][ T8817] ____fput+0x16/0x20 [ 78.504623][ T8817] task_work_run+0x145/0x1c0 [ 78.509197][ T8817] exit_to_usermode_loop+0x316/0x380 [ 78.514461][ T8817] do_syscall_64+0x65f/0x760 [ 78.519030][ T8817] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.524896][ T8817] RIP: 0033:0x413d90 [ 78.528766][ T8817] Code: 01 f0 ff ff 0f 83 30 1b 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 7d 42 66 00 00 75 14 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48 83 ec 08 e8 0a fc ff ff [ 78.548354][ T8817] RSP: 002b:00007ffc7b18f6f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 78.556785][ T8817] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000413d90 [ 78.564759][ T8817] RDX: 0000001b30420000 RSI: 0000000000000000 RDI: 0000000000000003 [ 78.572723][ T8817] RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffffffffffff [ 78.580671][ T8817] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075bf20 [ 78.588642][ T8817] R13: 0000000000000003 R14: 00000000007601c8 R15: 000000000075bf2c [ 78.596595][ T8817] Modules linked in: [ 78.601940][ T8817] ---[ end trace d873548b95ed2790 ]--- [ 78.607408][ T8817] RIP: 0010:j1939_priv_get_by_ndev_locked+0xf5/0x190 [ 78.614130][ T8817] Code: 03 80 3c 02 00 0f 85 ae 00 00 00 48 8b 9b 88 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 28 60 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 7f 4c 8b a3 28 60 00 00 4d 85 e4 74 12 e8 a4 5d f4 [ 78.633760][ T8817] RSP: 0018:ffff88809405f980 EFLAGS: 00010206 [ 78.640205][ T8817] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff867ec4c7 [ 78.648178][ T8817] RDX: 0000000000000c05 RSI: ffffffff867ec4d4 RDI: 0000000000006028 [ 78.656166][ T8817] RBP: ffff88809405f998 R08: ffff88809324c500 R09: ffffed101280bf23 [ 78.664150][ T8817] R10: ffffed101280bf22 R11: 0000000000000003 R12: 0000000000000000 [ 78.672129][ T8817] R13: 0000000000000118 R14: dffffc0000000000 R15: 0000000000000000 [ 78.680547][ T8817] FS: 00000000018e2940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 78.689481][ T8817] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.696407][ T8817] CR2: 00007ffd98403dbc CR3: 00000000a7cca000 CR4: 00000000001406f0 [ 78.704397][ T8817] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.712401][ T8817] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.720382][ T8817] Kernel panic - not syncing: Fatal exception [ 78.727928][ T8817] Kernel Offset: disabled [ 78.732263][ T8817] Rebooting in 86400 seconds..