[?25l[?1c7[ ok 8[?25h[?0c. [ 107.077664][ T31] audit: type=1800 audit(1561896985.126:25): pid=13190 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 107.102851][ T31] audit: type=1800 audit(1561896985.156:26): pid=13190 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 107.139909][ T31] audit: type=1800 audit(1561896985.176:27): pid=13190 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 '10.128.10.28' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 119.610700][T13340] ================================================================== [ 119.618803][T13340] BUG: KMSAN: uninit-value in batadv_netlink_dump_hardif+0x70d/0x880 [ 119.627084][T13340] CPU: 1 PID: 13340 Comm: syz-executor443 Not tainted 5.2.0-rc4+ #7 [ 119.636004][T13340] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 119.646250][T13340] Call Trace: [ 119.649838][T13340] dump_stack+0x191/0x1f0 [ 119.654177][T13340] kmsan_report+0x162/0x2d0 [ 119.658688][T13340] __msan_warning+0x75/0xe0 [ 119.663207][T13340] batadv_netlink_dump_hardif+0x70d/0x880 [ 119.668967][T13340] ? batadv_netlink_get_hardif+0x3a0/0x3a0 [ 119.674780][T13340] genl_lock_dumpit+0xc6/0x130 [ 119.679538][T13340] ? genl_lock_start+0x180/0x180 [ 119.684569][T13340] netlink_dump+0xa84/0x1ab0 [ 119.689256][T13340] ? kmsan_internal_memset_shadow+0x104/0x3a0 [ 119.695355][T13340] __netlink_dump_start+0xa3a/0xb30 [ 119.700589][T13340] genl_rcv_msg+0x1d9e/0x1f20 [ 119.705282][T13340] ? genl_rcv_msg+0x1f20/0x1f20 [ 119.710121][T13340] ? genl_lock_start+0x180/0x180 [ 119.715047][T13340] ? genl_lock_dumpit+0x130/0x130 [ 119.720067][T13340] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 119.725968][T13340] netlink_rcv_skb+0x431/0x620 [ 119.730736][T13340] ? genl_unbind+0x390/0x390 [ 119.735336][T13340] genl_rcv+0x63/0x80 [ 119.739328][T13340] netlink_unicast+0xf3e/0x1020 [ 119.744197][T13340] netlink_sendmsg+0x127e/0x12f0 [ 119.749150][T13340] ? netlink_getsockopt+0x1430/0x1430 [ 119.754535][T13340] ___sys_sendmsg+0x12ff/0x13c0 [ 119.759492][T13340] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 119.765384][T13340] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 119.771446][T13340] ? __fget_light+0x1b8/0x710 [ 119.776131][T13340] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 119.782026][T13340] __se_sys_sendmsg+0x305/0x460 [ 119.786890][T13340] __x64_sys_sendmsg+0x4a/0x70 [ 119.791673][T13340] do_syscall_64+0xbc/0xf0 [ 119.796113][T13340] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 119.801997][T13340] RIP: 0033:0x440209 [ 119.805903][T13340] 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 [ 119.825520][T13340] RSP: 002b:00007ffe66ad3408 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 119.833950][T13340] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440209 [ 119.841925][T13340] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 119.849910][T13340] RBP: 00000000006ca018 R08: 0000000000401b20 R09: 00000000004002c8 [ 119.857913][T13340] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a90 [ 119.865891][T13340] R13: 0000000000401b20 R14: 0000000000000000 R15: 0000000000000000 [ 119.873880][T13340] [ 119.876201][T13340] Uninit was created at: [ 119.880717][T13340] kmsan_internal_poison_shadow+0x53/0xa0 [ 119.886693][T13340] kmsan_kmalloc+0xa4/0x130 [ 119.891185][T13340] kmsan_slab_alloc+0xe/0x10 [ 119.895772][T13340] __kmalloc_node_track_caller+0xcba/0xf30 [ 119.901719][T13340] __alloc_skb+0x306/0xa10 [ 119.906492][T13340] netlink_sendmsg+0xb81/0x12f0 [ 119.911328][T13340] ___sys_sendmsg+0x12ff/0x13c0 [ 119.916169][T13340] __se_sys_sendmsg+0x305/0x460 [ 119.921019][T13340] __x64_sys_sendmsg+0x4a/0x70 [ 119.925862][T13340] do_syscall_64+0xbc/0xf0 [ 119.930277][T13340] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 119.936581][T13340] ================================================================== [ 119.944848][T13340] Disabling lock debugging due to kernel taint [ 119.951180][T13340] Kernel panic - not syncing: panic_on_warn set ... [ 119.957767][T13340] CPU: 1 PID: 13340 Comm: syz-executor443 Tainted: G B 5.2.0-rc4+ #7 [ 119.967146][T13340] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 119.977216][T13340] Call Trace: [ 119.980509][T13340] dump_stack+0x191/0x1f0 [ 119.984936][T13340] panic+0x3c9/0xc1e [ 119.988877][T13340] kmsan_report+0x2ca/0x2d0 [ 119.993389][T13340] __msan_warning+0x75/0xe0 [ 119.997995][T13340] batadv_netlink_dump_hardif+0x70d/0x880 [ 120.003734][T13340] ? batadv_netlink_get_hardif+0x3a0/0x3a0 [ 120.009530][T13340] genl_lock_dumpit+0xc6/0x130 [ 120.014288][T13340] ? genl_lock_start+0x180/0x180 [ 120.019233][T13340] netlink_dump+0xa84/0x1ab0 [ 120.023818][T13340] ? kmsan_internal_memset_shadow+0x104/0x3a0 [ 120.029903][T13340] __netlink_dump_start+0xa3a/0xb30 [ 120.035227][T13340] genl_rcv_msg+0x1d9e/0x1f20 [ 120.040027][T13340] ? genl_rcv_msg+0x1f20/0x1f20 [ 120.044868][T13340] ? genl_lock_start+0x180/0x180 [ 120.049794][T13340] ? genl_lock_dumpit+0x130/0x130 [ 120.054924][T13340] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 120.060840][T13340] netlink_rcv_skb+0x431/0x620 [ 120.065600][T13340] ? genl_unbind+0x390/0x390 [ 120.070189][T13340] genl_rcv+0x63/0x80 [ 120.074186][T13340] netlink_unicast+0xf3e/0x1020 [ 120.079057][T13340] netlink_sendmsg+0x127e/0x12f0 [ 120.084222][T13340] ? netlink_getsockopt+0x1430/0x1430 [ 120.089587][T13340] ___sys_sendmsg+0x12ff/0x13c0 [ 120.094456][T13340] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 120.100344][T13340] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 120.106398][T13340] ? __fget_light+0x1b8/0x710 [ 120.111072][T13340] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 120.116971][T13340] __se_sys_sendmsg+0x305/0x460 [ 120.121837][T13340] __x64_sys_sendmsg+0x4a/0x70 [ 120.126637][T13340] do_syscall_64+0xbc/0xf0 [ 120.131056][T13340] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 120.137065][T13340] RIP: 0033:0x440209 [ 120.140977][T13340] 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 [ 120.160841][T13340] RSP: 002b:00007ffe66ad3408 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 120.169258][T13340] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440209 [ 120.177440][T13340] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 120.185412][T13340] RBP: 00000000006ca018 R08: 0000000000401b20 R09: 00000000004002c8 [ 120.193567][T13340] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a90 [ 120.202206][T13340] R13: 0000000000401b20 R14: 0000000000000000 R15: 0000000000000000 [ 120.211534][T13340] Kernel Offset: disabled [ 120.215877][T13340] Rebooting in 86400 seconds..