[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 100.038833] audit: type=1800 audit(1552293734.099:25): pid=11098 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 100.058220] audit: type=1800 audit(1552293734.109:26): pid=11098 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 100.077681] audit: type=1800 audit(1552293734.119:27): pid=11098 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: [ 106.313090] sshd (11234) used greatest stack depth: 54160 bytes left Warning: Permanently added '10.128.10.5' (ECDSA) to the list of known hosts. executing program [ 114.179739] ================================================================== [ 114.187153] BUG: KMSAN: uninit-value in tipc_nl_compat_name_table_dump+0x54f/0xcd0 [ 114.194882] CPU: 1 PID: 11248 Comm: syz-executor646 Not tainted 5.0.0+ #11 [ 114.201915] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 114.211252] Call Trace: [ 114.213834] dump_stack+0x173/0x1d0 [ 114.217455] kmsan_report+0x12e/0x2a0 [ 114.221250] __msan_warning+0x82/0xf0 [ 114.225046] tipc_nl_compat_name_table_dump+0x54f/0xcd0 [ 114.230417] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 114.235605] ? tipc_nl_compat_name_table_dump_header+0x2d0/0x2d0 [ 114.241738] __tipc_nl_compat_dumpit+0x59e/0xda0 [ 114.246531] tipc_nl_compat_dumpit+0x63a/0x820 [ 114.251129] tipc_nl_compat_recv+0x1b5f/0x2750 [ 114.255750] ? tipc_nl_compat_link_reset_stats+0x460/0x460 [ 114.261357] ? tipc_nametbl_stop+0x1000/0x1000 [ 114.265927] ? tipc_nl_compat_name_table_dump_header+0x2d0/0x2d0 [ 114.272065] ? tipc_netlink_compat_stop+0x40/0x40 [ 114.276890] genl_rcv_msg+0x185f/0x1a60 [ 114.280905] netlink_rcv_skb+0x431/0x620 [ 114.284955] ? genl_unbind+0x390/0x390 [ 114.288859] genl_rcv+0x63/0x80 [ 114.292129] netlink_unicast+0xf3e/0x1020 [ 114.296284] netlink_sendmsg+0x127f/0x1300 [ 114.300546] ___sys_sendmsg+0xdb9/0x11b0 [ 114.304605] ? netlink_getsockopt+0x1460/0x1460 [ 114.309274] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 114.314488] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 114.319839] ? __fget_light+0x1fe/0x750 [ 114.323813] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 114.328995] __se_sys_sendmsg+0x305/0x460 [ 114.333156] __x64_sys_sendmsg+0x4a/0x70 [ 114.337236] do_syscall_64+0xbc/0xf0 [ 114.340942] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 114.346121] RIP: 0033:0x444069 [ 114.349297] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 1b d8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 114.368180] RSP: 002b:00007ffda17b3718 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 114.375873] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000444069 [ 114.383153] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 [ 114.390405] RBP: 00000000006ce018 R08: 0000000000000000 R09: 00000000004002e0 [ 114.397665] R10: 0000000000001900 R11: 0000000000000246 R12: 0000000000401d10 [ 114.404925] R13: 0000000000401da0 R14: 0000000000000000 R15: 0000000000000000 [ 114.412196] [ 114.413804] Uninit was created at: [ 114.417328] kmsan_internal_poison_shadow+0x92/0x150 [ 114.422418] kmsan_kmalloc+0xa6/0x130 [ 114.426218] kmsan_slab_alloc+0xe/0x10 [ 114.430089] __kmalloc_node_track_caller+0xe9e/0xff0 [ 114.435191] __alloc_skb+0x309/0xa20 [ 114.438889] netlink_sendmsg+0xb82/0x1300 [ 114.443029] ___sys_sendmsg+0xdb9/0x11b0 [ 114.447071] __se_sys_sendmsg+0x305/0x460 [ 114.451218] __x64_sys_sendmsg+0x4a/0x70 [ 114.455264] do_syscall_64+0xbc/0xf0 [ 114.458963] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 114.464131] ================================================================== [ 114.471469] Disabling lock debugging due to kernel taint [ 114.476924] Kernel panic - not syncing: panic_on_warn set ... [ 114.482798] CPU: 1 PID: 11248 Comm: syz-executor646 Tainted: G B 5.0.0+ #11 [ 114.491176] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 114.500509] Call Trace: [ 114.503086] dump_stack+0x173/0x1d0 [ 114.506714] panic+0x3d1/0xb01 [ 114.509926] kmsan_report+0x293/0x2a0 [ 114.513728] __msan_warning+0x82/0xf0 [ 114.517523] tipc_nl_compat_name_table_dump+0x54f/0xcd0 [ 114.522890] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 114.528082] ? tipc_nl_compat_name_table_dump_header+0x2d0/0x2d0 [ 114.534247] __tipc_nl_compat_dumpit+0x59e/0xda0 [ 114.539025] tipc_nl_compat_dumpit+0x63a/0x820 [ 114.543608] tipc_nl_compat_recv+0x1b5f/0x2750 [ 114.548199] ? tipc_nl_compat_link_reset_stats+0x460/0x460 [ 114.553807] ? tipc_nametbl_stop+0x1000/0x1000 [ 114.558377] ? tipc_nl_compat_name_table_dump_header+0x2d0/0x2d0 [ 114.564515] ? tipc_netlink_compat_stop+0x40/0x40 [ 114.569343] genl_rcv_msg+0x185f/0x1a60 [ 114.573339] netlink_rcv_skb+0x431/0x620 [ 114.577393] ? genl_unbind+0x390/0x390 [ 114.581284] genl_rcv+0x63/0x80 [ 114.584559] netlink_unicast+0xf3e/0x1020 [ 114.588719] netlink_sendmsg+0x127f/0x1300 [ 114.592971] ___sys_sendmsg+0xdb9/0x11b0 [ 114.597029] ? netlink_getsockopt+0x1460/0x1460 [ 114.601699] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 114.606878] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 114.612249] ? __fget_light+0x1fe/0x750 [ 114.616240] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 114.621426] __se_sys_sendmsg+0x305/0x460 [ 114.625584] __x64_sys_sendmsg+0x4a/0x70 [ 114.629635] do_syscall_64+0xbc/0xf0 [ 114.633343] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 114.638534] RIP: 0033:0x444069 [ 114.641723] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 1b d8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 114.660608] RSP: 002b:00007ffda17b3718 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 114.668310] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000444069 [ 114.675582] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 [ 114.682838] RBP: 00000000006ce018 R08: 0000000000000000 R09: 00000000004002e0 [ 114.690091] R10: 0000000000001900 R11: 0000000000000246 R12: 0000000000401d10 [ 114.697361] R13: 0000000000401da0 R14: 0000000000000000 R15: 0000000000000000 [ 114.705347] Kernel Offset: disabled [ 114.708973] Rebooting in 86400 seconds..