[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 37.740328] audit: type=1800 audit(1546826523.300:25): pid=7734 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 37.774303] audit: type=1800 audit(1546826523.300:26): pid=7734 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 37.809258] audit: type=1800 audit(1546826523.300:27): pid=7734 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 syzkaller login: [ 43.693416] sshd (7873) used greatest stack depth: 19848 bytes left Warning: Permanently added '10.128.0.87' (ECDSA) to the list of known hosts. 2019/01/07 02:02:16 parsed 1 programs 2019/01/07 02:02:18 executed programs: 0 [ 52.647029] IPVS: ftp: loaded support on port[0] = 21 [ 52.707227] chnl_net:caif_netlink_parms(): no params data found [ 52.738188] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.745017] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.752034] device bridge_slave_0 entered promiscuous mode [ 52.758916] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.765358] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.772177] device bridge_slave_1 entered promiscuous mode [ 52.787784] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 52.797079] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 52.813733] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 52.821240] team0: Port device team_slave_0 added [ 52.826553] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 52.833820] team0: Port device team_slave_1 added [ 52.838982] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 52.846327] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 52.902371] device hsr_slave_0 entered promiscuous mode [ 52.950382] device hsr_slave_1 entered promiscuous mode [ 53.030664] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 53.037543] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 53.050902] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.057339] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.064357] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.070765] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.099726] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 53.106678] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.114932] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 53.123499] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.142974] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.150061] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.157630] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 53.167560] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 53.173958] 8021q: adding VLAN 0 to HW filter on device team0 [ 53.183102] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.191057] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.197400] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.217593] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 53.227923] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 53.239772] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 53.246977] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 53.255485] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.261880] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.269245] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 53.277261] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 53.284924] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.292578] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 53.299960] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 53.306912] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 53.320451] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 53.329743] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 53.498093] kasan: CONFIG_KASAN_INLINE enabled [ 53.502887] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 53.510521] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 53.516753] CPU: 0 PID: 7935 Comm: syz-executor0 Not tainted 4.20.0+ #13 [ 53.523573] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.532923] RIP: 0010:__smc_diag_dump.isra.0+0x32a/0x2ba0 [ 53.538897] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 26 25 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 7f 20 49 8d 7f 0e 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 d2 [ 53.557801] RSP: 0018:ffff8880894ff120 EFLAGS: 00010203 [ 53.563165] RAX: dffffc0000000000 RBX: ffff88808fc3b280 RCX: 0000000000000000 [ 53.570431] RDX: 0000000000000001 RSI: ffffffff87b6cca2 RDI: 000000000000000e [ 53.577685] RBP: ffff8880894ff3e8 R08: ffff888099ee8640 R09: ffff88808b771090 [ 53.584954] R10: fffffbfff14a1168 R11: ffffffff8a508b43 R12: ffff88809347d860 [ 53.592207] R13: ffff88808b771040 R14: ffff88808fc3b6e0 R15: 0000000000000000 [ 53.599494] FS: 00007f547be9a700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 53.607737] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.613603] CR2: 0000000000000000 CR3: 0000000098d6e000 CR4: 00000000001406f0 [ 53.620900] Call Trace: [ 53.623478] ? __kmalloc_node_track_caller+0x4e/0x70 [ 53.628575] ? __alloc_skb+0x12d/0x730 [ 53.632453] ? smc_diag_handler_dump+0x350/0x350 [ 53.637196] ? sock_sendmsg+0xdd/0x130 [ 53.641074] ? ___sys_sendmsg+0x7ec/0x910 [ 53.645208] ? __sys_sendmsg+0x112/0x270 [ 53.649255] ? __x64_sys_sendmsg+0x78/0xb0 [ 53.653483] ? do_syscall_64+0x1a3/0x800 [ 53.657539] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.662894] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.668441] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.673970] ? check_preemption_disabled+0x48/0x290 [ 53.678992] ? __lock_is_held+0xb6/0x140 [ 53.683062] ? __kmalloc_node_track_caller+0x3d/0x70 [ 53.688162] ? lock_acquire+0x1db/0x570 [ 53.692147] ? smc_diag_dump_proto.isra.0+0xfb/0x3c0 [ 53.697286] ? lock_release+0xc40/0xc40 [ 53.701250] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 53.706775] ? kasan_check_write+0x14/0x20 [ 53.711009] smc_diag_dump_proto.isra.0+0x2e7/0x3c0 [ 53.716013] ? __smc_diag_dump.isra.0+0x2ba0/0x2ba0 [ 53.721019] ? find_held_lock+0x35/0x120 [ 53.725074] smc_diag_dump+0x27/0x80 [ 53.728780] netlink_dump+0x5f2/0x1070 [ 53.732659] ? netlink_broadcast+0x50/0x50 [ 53.736911] __netlink_dump_start+0x5b4/0x7e0 [ 53.741398] smc_diag_handler_dump+0x2a7/0x350 [ 53.745965] ? smc_gid_be16_convert+0x2c0/0x2c0 [ 53.750620] ? lock_downgrade+0x910/0x910 [ 53.754766] ? smc_diag_dump_proto.isra.0+0x3c0/0x3c0 [ 53.759951] ? rcu_read_unlock_special+0x380/0x380 [ 53.764901] sock_diag_rcv_msg+0x322/0x410 [ 53.769134] netlink_rcv_skb+0x17d/0x410 [ 53.773181] ? sock_diag_bind+0x80/0x80 [ 53.777170] ? netlink_ack+0xba0/0xba0 [ 53.781075] sock_diag_rcv+0x2b/0x40 [ 53.784775] netlink_unicast+0x574/0x770 [ 53.788826] ? netlink_attachskb+0x980/0x980 [ 53.793223] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.798748] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 53.803756] netlink_sendmsg+0xa05/0xf90 [ 53.807804] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 53.813341] ? netlink_unicast+0x770/0x770 [ 53.817578] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 53.822422] ? apparmor_socket_sendmsg+0x2a/0x30 [ 53.827168] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.832698] ? security_socket_sendmsg+0x93/0xc0 [ 53.837444] ? netlink_unicast+0x770/0x770 [ 53.841668] sock_sendmsg+0xdd/0x130 [ 53.845369] ___sys_sendmsg+0x7ec/0x910 [ 53.849359] ? copy_msghdr_from_user+0x570/0x570 [ 53.854117] ? iterate_fd+0x4b0/0x4b0 [ 53.857907] ? __might_fault+0x12b/0x1e0 [ 53.861963] ? find_held_lock+0x35/0x120 [ 53.866012] ? __might_fault+0x12b/0x1e0 [ 53.870058] ? __fget_light+0x2db/0x420 [ 53.874017] ? fget_raw+0x20/0x20 [ 53.877454] ? lock_release+0xc40/0xc40 [ 53.881414] ? trace_hardirqs_off_caller+0x300/0x300 [ 53.886499] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.892026] ? __fdget+0x1b/0x20 [ 53.895386] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 53.900909] ? sockfd_lookup_light+0xc2/0x160 [ 53.905429] __sys_sendmsg+0x112/0x270 [ 53.909306] ? __ia32_sys_shutdown+0x80/0x80 [ 53.913725] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.919075] ? trace_hardirqs_off_caller+0x300/0x300 [ 53.924166] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 53.928922] __x64_sys_sendmsg+0x78/0xb0 [ 53.932992] do_syscall_64+0x1a3/0x800 [ 53.936881] ? syscall_return_slowpath+0x5f0/0x5f0 [ 53.941818] ? prepare_exit_to_usermode+0x232/0x3b0 [ 53.946820] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 53.951662] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.956847] RIP: 0033:0x457ec9 [ 53.960036] Code: 6d b7 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 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 53.978961] RSP: 002b:00007f547be99c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 53.986662] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9 [ 53.993923] RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000006 [ 54.001184] RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 [ 54.008450] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f547be9a6d4 [ 54.015716] R13: 00000000004c52f9 R14: 00000000004d8d58 R15: 00000000ffffffff [ 54.022991] Modules linked in: [ 54.026211] ---[ end trace 30c7850b4d7b13d2 ]--- [ 54.030976] RIP: 0010:__smc_diag_dump.isra.0+0x32a/0x2ba0 [ 54.036501] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 26 25 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 7f 20 49 8d 7f 0e 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 d2 [ 54.055408] RSP: 0018:ffff8880894ff120 EFLAGS: 00010203 [ 54.060788] RAX: dffffc0000000000 RBX: ffff88808fc3b280 RCX: 0000000000000000 [ 54.068043] RDX: 0000000000000001 RSI: ffffffff87b6cca2 RDI: 000000000000000e [ 54.075332] RBP: ffff8880894ff3e8 R08: ffff888099ee8640 R09: ffff88808b771090 [ 54.082608] R10: fffffbfff14a1168 R11: ffffffff8a508b43 R12: ffff88809347d860 [ 54.089877] R13: ffff88808b771040 R14: ffff88808fc3b6e0 R15: 0000000000000000 [ 54.097162] FS: 00007f547be9a700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 54.105415] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 54.111297] CR2: 0000000000000000 CR3: 0000000098d6e000 CR4: 00000000001406f0 [ 54.118568] Kernel panic - not syncing: Fatal exception [ 54.124816] Kernel Offset: disabled [ 54.128435] Rebooting in 86400 seconds..