[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 99.029272] audit: type=1800 audit(1547686892.079:25): pid=11001 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 99.048514] audit: type=1800 audit(1547686892.079:26): pid=11001 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 99.067953] audit: type=1800 audit(1547686892.099:27): pid=11001 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 '10.128.0.72' (ECDSA) to the list of known hosts. 2019/01/17 01:01:46 fuzzer started 2019/01/17 01:01:51 dialing manager at 10.128.0.26:34017 2019/01/17 01:01:51 syscalls: 1 2019/01/17 01:01:51 code coverage: enabled 2019/01/17 01:01:51 comparison tracing: CONFIG_KCOV_ENABLE_COMPARISONS is not enabled 2019/01/17 01:01:51 setuid sandbox: enabled 2019/01/17 01:01:51 namespace sandbox: enabled 2019/01/17 01:01:51 Android sandbox: /sys/fs/selinux/policy does not exist 2019/01/17 01:01:51 fault injection: enabled 2019/01/17 01:01:51 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/01/17 01:01:51 net packet injection: enabled 2019/01/17 01:01:51 net device setup: enabled 01:05:21 executing program 0: syzkaller login: [ 329.554894] IPVS: ftp: loaded support on port[0] = 21 [ 329.723927] chnl_net:caif_netlink_parms(): no params data found [ 329.800553] bridge0: port 1(bridge_slave_0) entered blocking state [ 329.807236] bridge0: port 1(bridge_slave_0) entered disabled state [ 329.815868] device bridge_slave_0 entered promiscuous mode [ 329.825150] bridge0: port 2(bridge_slave_1) entered blocking state [ 329.831661] bridge0: port 2(bridge_slave_1) entered disabled state [ 329.840151] device bridge_slave_1 entered promiscuous mode [ 329.877225] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 329.889649] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 329.922929] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 329.931781] team0: Port device team_slave_0 added [ 329.938487] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 329.947894] team0: Port device team_slave_1 added [ 329.954566] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 329.963330] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 330.037794] device hsr_slave_0 entered promiscuous mode [ 330.162548] device hsr_slave_1 entered promiscuous mode [ 330.423443] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 330.431233] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 330.464629] bridge0: port 2(bridge_slave_1) entered blocking state [ 330.471180] bridge0: port 2(bridge_slave_1) entered forwarding state [ 330.478454] bridge0: port 1(bridge_slave_0) entered blocking state [ 330.485148] bridge0: port 1(bridge_slave_0) entered forwarding state [ 330.585024] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 330.591188] 8021q: adding VLAN 0 to HW filter on device bond0 [ 330.606913] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 330.622965] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 330.643645] bridge0: port 1(bridge_slave_0) entered disabled state [ 330.654353] bridge0: port 2(bridge_slave_1) entered disabled state [ 330.665284] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 330.683406] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 330.689576] 8021q: adding VLAN 0 to HW filter on device team0 [ 330.706700] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 330.714545] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 330.725336] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 330.734047] bridge0: port 1(bridge_slave_0) entered blocking state [ 330.740580] bridge0: port 1(bridge_slave_0) entered forwarding state [ 330.757669] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 330.772674] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 330.780921] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 330.789974] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 330.798504] bridge0: port 2(bridge_slave_1) entered blocking state [ 330.805100] bridge0: port 2(bridge_slave_1) entered forwarding state [ 330.812927] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 330.833773] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 330.847447] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 330.861151] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 330.870527] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 330.880118] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 330.889367] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 330.898468] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 330.907940] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 330.924020] IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready [ 330.937914] IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready [ 330.948359] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 330.958226] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 330.970201] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 330.979294] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 330.988083] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 330.997301] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 331.006534] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 331.015321] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 331.026139] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 331.057419] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 331.089869] 8021q: adding VLAN 0 to HW filter on device batadv0 01:05:24 executing program 0: 01:05:24 executing program 0: 01:05:24 executing program 0: r0 = socket$kcm(0x11, 0x3, 0x0) sendmsg$kcm(r0, &(0x7f0000000100)={&(0x7f0000000040)=@nfc={0x27, 0x3}, 0x80, &(0x7f00000000c0)=[{&(0x7f0000000200)="c10900000000000000011fe4ac141417e00000", 0x13}], 0x1}, 0x0) [ 331.548114] ================================================================== [ 331.555589] BUG: KMSAN: uninit-value in arp_mc_map+0x6a0/0x9b0 [ 331.561634] CPU: 0 PID: 11178 Comm: syz-executor0 Not tainted 5.0.0-rc1+ #7 [ 331.568748] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 331.578122] Call Trace: [ 331.580801] dump_stack+0x173/0x1d0 [ 331.584477] kmsan_report+0x12e/0x2a0 [ 331.588344] __msan_warning+0x82/0xf0 [ 331.592176] arp_mc_map+0x6a0/0x9b0 [ 331.595836] arp_constructor+0x422/0xa50 [ 331.599941] ? arp_key_eq+0xd0/0xd0 [ 331.603680] ___neigh_create+0xe19/0x2890 [ 331.607901] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 331.613305] __neigh_create+0xbd/0xd0 [ 331.617217] ip_finish_output2+0xa0f/0x1820 [ 331.621602] ip_finish_output+0xd2b/0xfd0 [ 331.625788] ip_output+0x53f/0x610 [ 331.629398] ? ip_mc_finish_output+0x3b0/0x3b0 [ 331.634044] ? ip_finish_output+0xfd0/0xfd0 [ 331.638396] ip_local_out+0x164/0x1d0 [ 331.642297] iptunnel_xmit+0x8a7/0xde0 [ 331.646311] ip_tunnel_xmit+0x35b9/0x3980 [ 331.650534] ipgre_xmit+0x1098/0x11c0 [ 331.654371] ? ipgre_close+0x230/0x230 [ 331.658302] dev_hard_start_xmit+0x604/0xc40 [ 331.662776] __dev_queue_xmit+0x2e48/0x3b80 [ 331.667158] dev_queue_xmit+0x4b/0x60 [ 331.670971] ? __netdev_pick_tx+0x1260/0x1260 [ 331.675584] packet_sendmsg+0x79bb/0x9760 [ 331.679773] ? __msan_metadata_ptr_for_store_8+0x13/0x20 [ 331.685272] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 331.690488] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 331.696024] ___sys_sendmsg+0xdb9/0x11b0 [ 331.700153] ? compat_packet_setsockopt+0x360/0x360 [ 331.705205] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 331.710415] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 331.715792] ? __fget_light+0x6e1/0x750 [ 331.719803] __se_sys_sendmsg+0x305/0x460 [ 331.724007] __x64_sys_sendmsg+0x4a/0x70 [ 331.728095] do_syscall_64+0xbc/0xf0 [ 331.731866] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 331.737116] RIP: 0033:0x457ec9 [ 331.740345] 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 [ 331.759271] RSP: 002b:00007f874512ac78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 331.766991] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9 [ 331.774289] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 [ 331.781567] RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 [ 331.788856] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f874512b6d4 [ 331.796143] R13: 00000000004c53b0 R14: 00000000004d8fc0 R15: 00000000ffffffff [ 331.803441] [ 331.805081] Uninit was created at: [ 331.808622] No stack [ 331.810969] ================================================================== [ 331.818340] Disabling lock debugging due to kernel taint [ 331.823799] Kernel panic - not syncing: panic_on_warn set ... [ 331.829709] CPU: 0 PID: 11178 Comm: syz-executor0 Tainted: G B 5.0.0-rc1+ #7 [ 331.838207] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 331.847576] Call Trace: [ 331.850192] dump_stack+0x173/0x1d0 [ 331.853844] panic+0x3d1/0xb01 [ 331.857135] kmsan_report+0x293/0x2a0 [ 331.860977] __msan_warning+0x82/0xf0 [ 331.864956] arp_mc_map+0x6a0/0x9b0 [ 331.868667] arp_constructor+0x422/0xa50 [ 331.872780] ? arp_key_eq+0xd0/0xd0 [ 331.876442] ___neigh_create+0xe19/0x2890 [ 331.880653] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 331.886068] __neigh_create+0xbd/0xd0 [ 331.889932] ip_finish_output2+0xa0f/0x1820 [ 331.894370] ip_finish_output+0xd2b/0xfd0 [ 331.898597] ip_output+0x53f/0x610 [ 331.902176] ? ip_mc_finish_output+0x3b0/0x3b0 [ 331.906786] ? ip_finish_output+0xfd0/0xfd0 [ 331.911134] ip_local_out+0x164/0x1d0 [ 331.914983] iptunnel_xmit+0x8a7/0xde0 [ 331.918951] ip_tunnel_xmit+0x35b9/0x3980 [ 331.923167] ipgre_xmit+0x1098/0x11c0 [ 331.927064] ? ipgre_close+0x230/0x230 [ 331.930968] dev_hard_start_xmit+0x604/0xc40 [ 331.935481] __dev_queue_xmit+0x2e48/0x3b80 [ 331.939862] dev_queue_xmit+0x4b/0x60 [ 331.943693] ? __netdev_pick_tx+0x1260/0x1260 [ 331.948228] packet_sendmsg+0x79bb/0x9760 [ 331.952444] ? __msan_metadata_ptr_for_store_8+0x13/0x20 [ 331.958006] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 331.963328] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 331.968772] ___sys_sendmsg+0xdb9/0x11b0 [ 331.972878] ? compat_packet_setsockopt+0x360/0x360 [ 331.977975] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 331.983275] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 331.988667] ? __fget_light+0x6e1/0x750 [ 331.992699] __se_sys_sendmsg+0x305/0x460 [ 331.996899] __x64_sys_sendmsg+0x4a/0x70 [ 332.000988] do_syscall_64+0xbc/0xf0 [ 332.004760] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 332.009962] RIP: 0033:0x457ec9 [ 332.013171] 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 [ 332.032112] RSP: 002b:00007f874512ac78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 332.039828] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9 [ 332.047105] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 [ 332.054391] RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 [ 332.061670] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f874512b6d4 [ 332.068948] R13: 00000000004c53b0 R14: 00000000004d8fc0 R15: 00000000ffffffff [ 332.077332] Kernel Offset: disabled [ 332.080979] Rebooting in 86400 seconds..