[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 59.865741][ T26] audit: type=1800 audit(1572990914.914:25): pid=8728 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 59.888636][ T26] audit: type=1800 audit(1572990914.914:26): pid=8728 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 59.921910][ T26] audit: type=1800 audit(1572990914.914:27): pid=8728 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 '10.128.0.6' (ECDSA) to the list of known hosts. 2019/11/05 22:10:50 parsed 1 programs 2019/11/05 22:10:53 executed programs: 0 syzkaller login: [ 998.464000][ T8901] IPVS: ftp: loaded support on port[0] = 21 [ 998.529213][ T8901] chnl_net:caif_netlink_parms(): no params data found [ 998.558028][ T8901] bridge0: port 1(bridge_slave_0) entered blocking state [ 998.566192][ T8901] bridge0: port 1(bridge_slave_0) entered disabled state [ 998.574331][ T8901] device bridge_slave_0 entered promiscuous mode [ 998.582645][ T8901] bridge0: port 2(bridge_slave_1) entered blocking state [ 998.589755][ T8901] bridge0: port 2(bridge_slave_1) entered disabled state [ 998.597642][ T8901] device bridge_slave_1 entered promiscuous mode [ 998.615845][ T8901] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 998.626359][ T8901] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 998.646405][ T8901] team0: Port device team_slave_0 added [ 998.653695][ T8901] team0: Port device team_slave_1 added [ 998.714367][ T8901] device hsr_slave_0 entered promiscuous mode [ 998.762020][ T8901] device hsr_slave_1 entered promiscuous mode [ 1000.012711][ T8901] netdevsim: probe of netdevsim0 failed with error -17 [ 1000.053231][ T8901] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1000.065011][ T3515] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 1000.075631][ T3515] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 1000.086383][ T8901] 8021q: adding VLAN 0 to HW filter on device team0 [ 1000.095705][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 1000.104704][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 1000.113417][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 1000.120712][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1000.129221][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 1000.151484][ T8901] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 1000.163988][ T8901] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 1000.177315][ T8905] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 1000.186357][ T8905] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 1000.195377][ T8905] bridge0: port 2(bridge_slave_1) entered blocking state [ 1000.202503][ T8905] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1000.210748][ T8905] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 1000.220118][ T8905] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 1000.229207][ T8905] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 1000.237989][ T8905] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 1000.246732][ T8905] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 1000.255667][ T8905] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 1000.264406][ T8905] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 1000.272845][ T8905] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 1000.281461][ T8905] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 1000.289889][ T8905] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 1000.298771][ T8905] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 1000.306733][ T8905] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 1000.322237][ T3515] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 1000.329627][ T3515] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 1000.341998][ T8901] 8021q: adding VLAN 0 to HW filter on device batadv0 2019/11/05 22:10:58 executed programs: 4 2019/11/05 22:11:04 executed programs: 11 2019/11/05 22:11:10 executed programs: 18 2019/11/05 22:11:15 executed programs: 25 2019/11/05 22:11:21 executed programs: 32 2019/11/05 22:11:27 executed programs: 39 2019/11/05 22:11:33 executed programs: 46 2019/11/05 22:11:38 executed programs: 53 [ 1044.753301][ T9186] kasan: CONFIG_KASAN_INLINE enabled [ 1044.758808][ T9186] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 1044.767627][ T9186] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 1044.774586][ T9186] CPU: 1 PID: 9186 Comm: syz-executor.0 Not tainted 5.4.0-rc5+ #0 [ 1044.782366][ T9186] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1044.792494][ T9186] RIP: 0010:j1939_sk_sendmsg+0x6d6/0x1450 [ 1044.798209][ T9186] Code: e8 cf d8 f2 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 [ 1044.817926][ T9186] RSP: 0018:ffff88808db4fa28 EFLAGS: 00010206 [ 1044.823988][ T9186] RAX: dffffc0000000009 RBX: 0000000006fffff9 RCX: 0000000006fffff9 [ 1044.833422][ T9186] RDX: 0000000000000000 RSI: ffffffff86805231 RDI: 0000000000000007 [ 1044.841563][ T9186] RBP: ffff88808db4fb40 R08: ffff88809ed94400 R09: 0000000000000000 [ 1044.850550][ T9186] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 1044.858507][ T9186] R13: ffff8880928e3510 R14: 0000000000000000 R15: 0000000000000000 [ 1044.866463][ T9186] FS: 00007f4b3f7bc700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 1044.875371][ T9186] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1044.881935][ T9186] CR2: 00007f4b3f7bbdb8 CR3: 00000000a4902000 CR4: 00000000001406e0 [ 1044.889900][ T9186] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1044.897865][ T9186] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1044.905907][ T9186] Call Trace: [ 1044.909212][ T9186] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 1044.914842][ T9186] ? j1939_sk_recv_match_one+0x780/0x780 [ 1044.920471][ T9186] ? apparmor_socket_sendmsg+0x2a/0x30 [ 1044.925913][ T9186] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1044.932170][ T9186] ? security_socket_sendmsg+0x8d/0xc0 [ 1044.937619][ T9186] ? j1939_sk_recv_match_one+0x780/0x780 [ 1044.943408][ T9186] sock_sendmsg+0xd7/0x130 [ 1044.947807][ T9186] ___sys_sendmsg+0x803/0x920 [ 1044.952471][ T9186] ? copy_msghdr_from_user+0x440/0x440 [ 1044.958792][ T9186] ? __kasan_check_read+0x11/0x20 [ 1044.963824][ T9186] ? __fget+0x384/0x560 [ 1044.967969][ T9186] ? __fget_light+0x1a9/0x230 [ 1044.972712][ T9186] ? __fdget+0x1b/0x20 [ 1044.976860][ T9186] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1044.983081][ T9186] __sys_sendmsg+0x105/0x1d0 [ 1044.987648][ T9186] ? __sys_sendmsg_sock+0xd0/0xd0 [ 1044.992661][ T9186] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 1044.998115][ T9186] ? do_syscall_64+0x26/0x760 [ 1045.002831][ T9186] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1045.008885][ T9186] ? do_syscall_64+0x26/0x760 [ 1045.013540][ T9186] __x64_sys_sendmsg+0x78/0xb0 [ 1045.018326][ T9186] do_syscall_64+0xfa/0x760 [ 1045.022840][ T9186] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1045.028810][ T9186] RIP: 0033:0x45a219 [ 1045.032687][ T9186] 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 [ 1045.052443][ T9186] RSP: 002b:00007f4b3f7bbc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1045.060834][ T9186] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a219 [ 1045.068785][ T9186] RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003 [ 1045.076739][ T9186] RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000 [ 1045.084706][ T9186] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4b3f7bc6d4 [ 1045.092656][ T9186] R13: 00000000004c804e R14: 00000000004de4d0 R15: 00000000ffffffff [ 1045.101659][ T9186] Modules linked in: [ 1045.106024][ T9186] ---[ end trace d2f6d3cf9161c10f ]--- [ 1045.111504][ T9186] RIP: 0010:j1939_sk_sendmsg+0x6d6/0x1450 [ 1045.117304][ T9186] Code: e8 cf d8 f2 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 [ 1045.137121][ T9186] RSP: 0018:ffff88808db4fa28 EFLAGS: 00010206 [ 1045.143230][ T9186] RAX: dffffc0000000009 RBX: 0000000006fffff9 RCX: 0000000006fffff9 [ 1045.151299][ T9186] RDX: 0000000000000000 RSI: ffffffff86805231 RDI: 0000000000000007 [ 1045.160572][ T9186] RBP: ffff88808db4fb40 R08: ffff88809ed94400 R09: 0000000000000000 [ 1045.168702][ T9186] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 1045.176695][ T9186] R13: ffff8880928e3510 R14: 0000000000000000 R15: 0000000000000000 [ 1045.184698][ T9186] FS: 00007f4b3f7bc700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 1045.193673][ T9186] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1045.200258][ T9186] CR2: 00007f4b3f7bbdb8 CR3: 00000000a4902000 CR4: 00000000001406e0 [ 1045.208644][ T9186] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1045.216711][ T9186] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1045.224712][ T9186] Kernel panic - not syncing: Fatal exception [ 1045.232625][ T9186] Kernel Offset: disabled [ 1045.237039][ T9186] Rebooting in 86400 seconds..