[ 95.138637] audit: type=1800 audit(1552306704.192:25): pid=10630 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 95.157942] audit: type=1800 audit(1552306704.192:26): pid=10630 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 95.177475] audit: type=1800 audit(1552306704.222:27): pid=10630 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. [ 96.424960] sshd (10696) used greatest stack depth: 54176 bytes left [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.5' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 119.251171] ================================================================== [ 119.258676] BUG: KMSAN: uninit-value in tipc_nl_compat_name_table_dump+0x54f/0xcd0 [ 119.266377] CPU: 0 PID: 10781 Comm: syz-executor999 Not tainted 5.0.0+ #11 [ 119.273370] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 119.282706] Call Trace: [ 119.285290] dump_stack+0x173/0x1d0 [ 119.288930] kmsan_report+0x12e/0x2a0 [ 119.292737] __msan_warning+0x82/0xf0 [ 119.296543] tipc_nl_compat_name_table_dump+0x54f/0xcd0 [ 119.302154] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 119.307352] ? tipc_nl_compat_name_table_dump_header+0x2d0/0x2d0 [ 119.313490] __tipc_nl_compat_dumpit+0x59e/0xda0 [ 119.318272] tipc_nl_compat_dumpit+0x63a/0x820 [ 119.322863] tipc_nl_compat_recv+0x1b5f/0x2750 [ 119.327464] ? tipc_nl_compat_link_reset_stats+0x460/0x460 [ 119.333079] ? tipc_nametbl_stop+0x1000/0x1000 [ 119.337649] ? tipc_nl_compat_name_table_dump_header+0x2d0/0x2d0 [ 119.343787] ? tipc_netlink_compat_stop+0x40/0x40 [ 119.348796] genl_rcv_msg+0x185f/0x1a60 [ 119.352911] netlink_rcv_skb+0x431/0x620 [ 119.356967] ? genl_unbind+0x390/0x390 [ 119.364416] genl_rcv+0x63/0x80 [ 119.367692] netlink_unicast+0xf3e/0x1020 [ 119.371848] netlink_sendmsg+0x127f/0x1300 [ 119.376099] ___sys_sendmsg+0xdb9/0x11b0 [ 119.380156] ? netlink_getsockopt+0x1460/0x1460 [ 119.384830] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 119.390018] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 119.395500] ? __fget_light+0x1fe/0x750 [ 119.399478] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 119.404666] __se_sys_sendmsg+0x305/0x460 [ 119.408827] __x64_sys_sendmsg+0x4a/0x70 [ 119.412879] do_syscall_64+0xbc/0xf0 [ 119.416596] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 119.421779] RIP: 0033:0x444049 [ 119.424974] 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 [ 119.443978] RSP: 002b:00007ffeebd2e178 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 119.451672] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000444049 [ 119.459024] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 [ 119.466490] RBP: 00000000006ce018 R08: 0000000000000000 R09: 00000000004002e0 [ 119.473746] R10: 0000000000001900 R11: 0000000000000246 R12: 0000000000401cf0 [ 119.481004] R13: 0000000000401d80 R14: 0000000000000000 R15: 0000000000000000 [ 119.488278] [ 119.489890] Uninit was created at: [ 119.493423] kmsan_internal_poison_shadow+0x92/0x150 [ 119.498513] kmsan_kmalloc+0xa6/0x130 [ 119.502301] kmsan_slab_alloc+0xe/0x10 [ 119.506452] __kmalloc_node_track_caller+0xe9e/0xff0 [ 119.511553] __alloc_skb+0x309/0xa20 [ 119.515269] netlink_sendmsg+0xb82/0x1300 [ 119.519408] ___sys_sendmsg+0xdb9/0x11b0 [ 119.523454] __se_sys_sendmsg+0x305/0x460 [ 119.527588] __x64_sys_sendmsg+0x4a/0x70 [ 119.531644] do_syscall_64+0xbc/0xf0 [ 119.535356] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 119.540531] ================================================================== [ 119.547872] Disabling lock debugging due to kernel taint [ 119.553307] Kernel panic - not syncing: panic_on_warn set ... [ 119.559192] CPU: 0 PID: 10781 Comm: syz-executor999 Tainted: G B 5.0.0+ #11 [ 119.567576] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 119.576916] Call Trace: [ 119.579547] dump_stack+0x173/0x1d0 [ 119.583223] panic+0x3d1/0xb01 [ 119.586440] kmsan_report+0x293/0x2a0 [ 119.590244] __msan_warning+0x82/0xf0 [ 119.594053] tipc_nl_compat_name_table_dump+0x54f/0xcd0 [ 119.599526] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 119.604719] ? tipc_nl_compat_name_table_dump_header+0x2d0/0x2d0 [ 119.610861] __tipc_nl_compat_dumpit+0x59e/0xda0 [ 119.615650] tipc_nl_compat_dumpit+0x63a/0x820 [ 119.620500] tipc_nl_compat_recv+0x1b5f/0x2750 [ 119.625096] ? tipc_nl_compat_link_reset_stats+0x460/0x460 [ 119.630710] ? tipc_nametbl_stop+0x1000/0x1000 [ 119.635438] ? tipc_nl_compat_name_table_dump_header+0x2d0/0x2d0 [ 119.641599] ? tipc_netlink_compat_stop+0x40/0x40 [ 119.646569] genl_rcv_msg+0x185f/0x1a60 [ 119.650573] netlink_rcv_skb+0x431/0x620 [ 119.654726] ? genl_unbind+0x390/0x390 [ 119.658627] genl_rcv+0x63/0x80 [ 119.662105] netlink_unicast+0xf3e/0x1020 [ 119.666290] netlink_sendmsg+0x127f/0x1300 [ 119.670601] ___sys_sendmsg+0xdb9/0x11b0 [ 119.674668] ? netlink_getsockopt+0x1460/0x1460 [ 119.679432] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 119.684815] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 119.690181] ? __fget_light+0x1fe/0x750 [ 119.694160] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 119.699352] __se_sys_sendmsg+0x305/0x460 [ 119.703516] __x64_sys_sendmsg+0x4a/0x70 [ 119.707576] do_syscall_64+0xbc/0xf0 [ 119.711351] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 119.716578] RIP: 0033:0x444049 [ 119.719764] 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 [ 119.738650] RSP: 002b:00007ffeebd2e178 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 119.746349] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000444049 [ 119.753605] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 [ 119.760856] RBP: 00000000006ce018 R08: 0000000000000000 R09: 00000000004002e0 [ 119.768106] R10: 0000000000001900 R11: 0000000000000246 R12: 0000000000401cf0 [ 119.775365] R13: 0000000000401d80 R14: 0000000000000000 R15: 0000000000000000 [ 119.783499] Kernel Offset: disabled [ 119.787130] Rebooting in 86400 seconds..