[ 82.528100][ T30] audit: type=1800 audit(1559720468.574:25): pid=11553 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 82.561883][ T30] audit: type=1800 audit(1559720468.604:26): pid=11553 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 82.582162][ T30] audit: type=1800 audit(1559720468.614:27): pid=11553 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 83.132571][T11611] cron (11611) used greatest stack depth: 53696 bytes left [....] 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 '10.128.0.19' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 92.977639][T11705] ================================================================== [ 92.985870][T11705] BUG: KMSAN: uninit-value in batadv_netlink_dump_hardif+0x70d/0x880 [ 92.993926][T11705] CPU: 1 PID: 11705 Comm: syz-executor888 Not tainted 5.1.0+ #1 [ 93.001538][T11705] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 93.011581][T11705] Call Trace: [ 93.014869][T11705] dump_stack+0x191/0x1f0 [ 93.019219][T11705] kmsan_report+0x130/0x2a0 [ 93.023725][T11705] __msan_warning+0x75/0xe0 [ 93.028226][T11705] batadv_netlink_dump_hardif+0x70d/0x880 [ 93.033952][T11705] ? batadv_netlink_get_hardif+0x3a0/0x3a0 [ 93.039744][T11705] genl_lock_dumpit+0xc6/0x130 [ 93.044502][T11705] ? genl_lock_start+0x180/0x180 [ 93.049442][T11705] netlink_dump+0xa84/0x1ab0 [ 93.054027][T11705] ? kmsan_internal_memset_shadow+0x104/0x3a0 [ 93.060104][T11705] __netlink_dump_start+0xa3a/0xb30 [ 93.065313][T11705] genl_rcv_msg+0xfc1/0x1a40 [ 93.069907][T11705] ? kmsan_get_shadow_origin_ptr+0x460/0x470 [ 93.075887][T11705] ? genl_rcv_msg+0x1a40/0x1a40 [ 93.081788][T11705] ? genl_lock_start+0x180/0x180 [ 93.086734][T11705] ? genl_lock_dumpit+0x130/0x130 [ 93.091781][T11705] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 93.103318][T11705] netlink_rcv_skb+0x431/0x620 [ 93.108076][T11705] ? genl_unbind+0x390/0x390 [ 93.112691][T11705] genl_rcv+0x63/0x80 [ 93.116668][T11705] netlink_unicast+0xf3e/0x1020 [ 93.121530][T11705] netlink_sendmsg+0x127e/0x12f0 [ 93.126482][T11705] ? netlink_getsockopt+0x1430/0x1430 [ 93.131859][T11705] ___sys_sendmsg+0xcc6/0x1200 [ 93.136688][T11705] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 93.142585][T11705] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 93.148642][T11705] ? __fget_light+0x1cd/0x6e0 [ 93.153317][T11705] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 93.159334][T11705] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 93.165337][T11705] __se_sys_sendmsg+0x305/0x460 [ 93.170289][T11705] __x64_sys_sendmsg+0x4a/0x70 [ 93.175065][T11705] do_syscall_64+0xbc/0xf0 [ 93.179473][T11705] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 93.185352][T11705] RIP: 0033:0x440209 [ 93.189237][T11705] 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 93.208832][T11705] RSP: 002b:00007fffe9f51558 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 93.217845][T11705] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440209 [ 93.225994][T11705] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 93.233952][T11705] RBP: 00000000006ca018 R08: 0000000000401b20 R09: 00000000004002c8 [ 93.241927][T11705] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a90 [ 93.249894][T11705] R13: 0000000000401b20 R14: 0000000000000000 R15: 0000000000000000 [ 93.257871][T11705] [ 93.260180][T11705] Uninit was created at: [ 93.264416][T11705] kmsan_internal_poison_shadow+0x92/0x150 [ 93.270232][T11705] kmsan_kmalloc+0xa4/0x130 [ 93.274743][T11705] kmsan_slab_alloc+0xe/0x10 [ 93.279322][T11705] __kmalloc_node_track_caller+0xcba/0xf30 [ 93.285136][T11705] __alloc_skb+0x306/0xa10 [ 93.289540][T11705] netlink_sendmsg+0xb81/0x12f0 [ 93.294375][T11705] ___sys_sendmsg+0xcc6/0x1200 [ 93.299125][T11705] __se_sys_sendmsg+0x305/0x460 [ 93.303961][T11705] __x64_sys_sendmsg+0x4a/0x70 [ 93.308710][T11705] do_syscall_64+0xbc/0xf0 [ 93.313119][T11705] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 93.318986][T11705] ================================================================== [ 93.327026][T11705] Disabling lock debugging due to kernel taint [ 93.333177][T11705] Kernel panic - not syncing: panic_on_warn set ... [ 93.339753][T11705] CPU: 1 PID: 11705 Comm: syz-executor888 Tainted: G B 5.1.0+ #1 [ 93.348753][T11705] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 93.358796][T11705] Call Trace: [ 93.362084][T11705] dump_stack+0x191/0x1f0 [ 93.366412][T11705] panic+0x3ca/0xafe [ 93.370330][T11705] kmsan_report+0x298/0x2a0 [ 93.374831][T11705] __msan_warning+0x75/0xe0 [ 93.379349][T11705] batadv_netlink_dump_hardif+0x70d/0x880 [ 93.385075][T11705] ? batadv_netlink_get_hardif+0x3a0/0x3a0 [ 93.390893][T11705] genl_lock_dumpit+0xc6/0x130 [ 93.395664][T11705] ? genl_lock_start+0x180/0x180 [ 93.400589][T11705] netlink_dump+0xa84/0x1ab0 [ 93.405179][T11705] ? kmsan_internal_memset_shadow+0x104/0x3a0 [ 93.411267][T11705] __netlink_dump_start+0xa3a/0xb30 [ 93.416477][T11705] genl_rcv_msg+0xfc1/0x1a40 [ 93.421265][T11705] ? kmsan_get_shadow_origin_ptr+0x460/0x470 [ 93.427505][T11705] ? genl_rcv_msg+0x1a40/0x1a40 [ 93.432345][T11705] ? genl_lock_start+0x180/0x180 [ 93.437269][T11705] ? genl_lock_dumpit+0x130/0x130 [ 93.442305][T11705] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 93.448192][T11705] netlink_rcv_skb+0x431/0x620 [ 93.452952][T11705] ? genl_unbind+0x390/0x390 [ 93.457562][T11705] genl_rcv+0x63/0x80 [ 93.461533][T11705] netlink_unicast+0xf3e/0x1020 [ 93.466410][T11705] netlink_sendmsg+0x127e/0x12f0 [ 93.471368][T11705] ? netlink_getsockopt+0x1430/0x1430 [ 93.476736][T11705] ___sys_sendmsg+0xcc6/0x1200 [ 93.481517][T11705] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 93.487421][T11705] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 93.493479][T11705] ? __fget_light+0x1cd/0x6e0 [ 93.498144][T11705] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 93.504037][T11705] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 93.509944][T11705] __se_sys_sendmsg+0x305/0x460 [ 93.514899][T11705] __x64_sys_sendmsg+0x4a/0x70 [ 93.519656][T11705] do_syscall_64+0xbc/0xf0 [ 93.524067][T11705] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 93.529960][T11705] RIP: 0033:0x440209 [ 93.533844][T11705] 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 93.553435][T11705] RSP: 002b:00007fffe9f51558 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 93.561840][T11705] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440209 [ 93.569811][T11705] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 93.577768][T11705] RBP: 00000000006ca018 R08: 0000000000401b20 R09: 00000000004002c8 [ 93.585742][T11705] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a90 [ 93.593713][T11705] R13: 0000000000401b20 R14: 0000000000000000 R15: 0000000000000000 [ 93.602939][T11705] Kernel Offset: disabled [ 93.607271][T11705] Rebooting in 86400 seconds..