[?25l[?1c7[ ok 8[?25h[?0c. [ 95.991048][ T33] audit: type=1800 audit(1581535302.054:25): pid=10866 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 96.023040][ T33] audit: type=1800 audit(1581535302.084:26): pid=10866 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 96.062907][ T33] audit: type=1800 audit(1581535302.114:27): pid=10866 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 '10.128.0.31' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 107.224461][T11018] ===================================================== [ 107.231437][T11018] BUG: KMSAN: uninit-value in strlen+0x5e/0xa0 [ 107.237585][T11018] CPU: 1 PID: 11018 Comm: syz-executor962 Not tainted 5.5.0-rc5-syzkaller #0 [ 107.246336][T11018] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 107.256383][T11018] Call Trace: [ 107.259678][T11018] dump_stack+0x1c9/0x220 [ 107.264014][T11018] kmsan_report+0xf7/0x1e0 [ 107.268455][T11018] __msan_warning+0x58/0xa0 [ 107.272977][T11018] strlen+0x5e/0xa0 [ 107.276792][T11018] kstrdup+0x7f/0x1a0 [ 107.280834][T11018] rtnl_linkprop+0x85d/0xc00 [ 107.285437][T11018] ? module_address_lookup+0x201/0x290 [ 107.291025][T11018] ? kmsan_get_metadata+0x11d/0x180 [ 107.296317][T11018] ? kmsan_get_metadata+0x11d/0x180 [ 107.301507][T11018] ? kmsan_set_origin_checked+0x95/0xf0 [ 107.307049][T11018] ? kmsan_internal_unpoison_shadow+0x2f/0x40 [ 107.313205][T11018] rtnl_newlinkprop+0x9d/0xb0 [ 107.317869][T11018] ? rtnl_dump_all+0x5d0/0x5d0 [ 107.322624][T11018] rtnetlink_rcv_msg+0x1153/0x1570 [ 107.327757][T11018] ? do_syscall_64+0xb8/0x160 [ 107.332440][T11018] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 107.338570][T11018] ? stack_trace_save+0x1b0/0x1b0 [ 107.343631][T11018] ? kmsan_get_metadata+0x11d/0x180 [ 107.348820][T11018] ? kmsan_get_metadata+0x4f/0x180 [ 107.353913][T11018] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 107.359757][T11018] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 107.365813][T11018] ? rhashtable_jhash2+0x3ac/0x4d0 [ 107.370917][T11018] ? kmsan_get_metadata+0x11d/0x180 [ 107.376100][T11018] ? kmsan_get_metadata+0x4f/0x180 [ 107.381197][T11018] ? kmsan_get_metadata+0x4f/0x180 [ 107.386298][T11018] ? kmsan_get_metadata+0x4f/0x180 [ 107.391441][T11018] ? kmsan_set_origin_checked+0x95/0xf0 [ 107.396979][T11018] ? kmsan_get_metadata+0x11d/0x180 [ 107.402161][T11018] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 107.407963][T11018] netlink_rcv_skb+0x451/0x650 [ 107.412712][T11018] ? rtnetlink_bind+0x120/0x120 [ 107.417562][T11018] rtnetlink_rcv+0x50/0x60 [ 107.421978][T11018] netlink_unicast+0xf9e/0x1100 [ 107.426847][T11018] ? rtnetlink_net_exit+0x90/0x90 [ 107.431868][T11018] netlink_sendmsg+0x1248/0x14d0 [ 107.436802][T11018] ? netlink_getsockopt+0x1440/0x1440 [ 107.442167][T11018] ____sys_sendmsg+0x12b6/0x1350 [ 107.447109][T11018] __sys_sendmsg+0x451/0x5f0 [ 107.451713][T11018] ? kmsan_get_metadata+0x11d/0x180 [ 107.456922][T11018] ? kmsan_get_metadata+0x11d/0x180 [ 107.462107][T11018] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 107.467912][T11018] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 107.473974][T11018] ? prepare_exit_to_usermode+0x1ca/0x520 [ 107.479690][T11018] __se_sys_sendmsg+0x97/0xb0 [ 107.484358][T11018] __x64_sys_sendmsg+0x4a/0x70 [ 107.489113][T11018] do_syscall_64+0xb8/0x160 [ 107.493618][T11018] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 107.499546][T11018] RIP: 0033:0x4402c9 [ 107.503432][T11018] 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 [ 107.523144][T11018] RSP: 002b:00007ffcf6ebba38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 107.531549][T11018] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004402c9 [ 107.539508][T11018] RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003 [ 107.547474][T11018] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 107.555440][T11018] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000401b50 [ 107.563397][T11018] R13: 0000000000401be0 R14: 0000000000000000 R15: 0000000000000000 [ 107.571375][T11018] [ 107.573691][T11018] Uninit was created at: [ 107.577938][T11018] kmsan_internal_poison_shadow+0x66/0xd0 [ 107.583650][T11018] kmsan_slab_alloc+0x8a/0xe0 [ 107.588385][T11018] __kmalloc_node_track_caller+0xb40/0x1200 [ 107.594272][T11018] __alloc_skb+0x2fd/0xac0 [ 107.598704][T11018] netlink_sendmsg+0x7d3/0x14d0 [ 107.603671][T11018] ____sys_sendmsg+0x12b6/0x1350 [ 107.608624][T11018] __sys_sendmsg+0x451/0x5f0 [ 107.613295][T11018] __se_sys_sendmsg+0x97/0xb0 [ 107.617952][T11018] __x64_sys_sendmsg+0x4a/0x70 [ 107.622703][T11018] do_syscall_64+0xb8/0x160 [ 107.627204][T11018] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 107.633116][T11018] ===================================================== [ 107.640081][T11018] Disabling lock debugging due to kernel taint [ 107.646220][T11018] Kernel panic - not syncing: panic_on_warn set ... [ 107.652805][T11018] CPU: 1 PID: 11018 Comm: syz-executor962 Tainted: G B 5.5.0-rc5-syzkaller #0 [ 107.662947][T11018] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 107.673003][T11018] Call Trace: [ 107.676284][T11018] dump_stack+0x1c9/0x220 [ 107.680615][T11018] panic+0x3d5/0xc3e [ 107.684521][T11018] kmsan_report+0x1df/0x1e0 [ 107.689011][T11018] __msan_warning+0x58/0xa0 [ 107.693506][T11018] strlen+0x5e/0xa0 [ 107.697315][T11018] kstrdup+0x7f/0x1a0 [ 107.701298][T11018] rtnl_linkprop+0x85d/0xc00 [ 107.705893][T11018] ? module_address_lookup+0x201/0x290 [ 107.711374][T11018] ? kmsan_get_metadata+0x11d/0x180 [ 107.716565][T11018] ? kmsan_get_metadata+0x11d/0x180 [ 107.721756][T11018] ? kmsan_set_origin_checked+0x95/0xf0 [ 107.727292][T11018] ? kmsan_internal_unpoison_shadow+0x2f/0x40 [ 107.733350][T11018] rtnl_newlinkprop+0x9d/0xb0 [ 107.738023][T11018] ? rtnl_dump_all+0x5d0/0x5d0 [ 107.742780][T11018] rtnetlink_rcv_msg+0x1153/0x1570 [ 107.747889][T11018] ? do_syscall_64+0xb8/0x160 [ 107.754671][T11018] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 107.760835][T11018] ? stack_trace_save+0x1b0/0x1b0 [ 107.765859][T11018] ? kmsan_get_metadata+0x11d/0x180 [ 107.771052][T11018] ? kmsan_get_metadata+0x4f/0x180 [ 107.776173][T11018] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 107.781984][T11018] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 107.788042][T11018] ? rhashtable_jhash2+0x3ac/0x4d0 [ 107.793321][T11018] ? kmsan_get_metadata+0x11d/0x180 [ 107.798596][T11018] ? kmsan_get_metadata+0x4f/0x180 [ 107.803695][T11018] ? kmsan_get_metadata+0x4f/0x180 [ 107.808813][T11018] ? kmsan_get_metadata+0x4f/0x180 [ 107.813922][T11018] ? kmsan_set_origin_checked+0x95/0xf0 [ 107.819465][T11018] ? kmsan_get_metadata+0x11d/0x180 [ 107.824660][T11018] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 107.830474][T11018] netlink_rcv_skb+0x451/0x650 [ 107.835237][T11018] ? rtnetlink_bind+0x120/0x120 [ 107.840082][T11018] rtnetlink_rcv+0x50/0x60 [ 107.844507][T11018] netlink_unicast+0xf9e/0x1100 [ 107.849367][T11018] ? rtnetlink_net_exit+0x90/0x90 [ 107.854395][T11018] netlink_sendmsg+0x1248/0x14d0 [ 107.859428][T11018] ? netlink_getsockopt+0x1440/0x1440 [ 107.864784][T11018] ____sys_sendmsg+0x12b6/0x1350 [ 107.869756][T11018] __sys_sendmsg+0x451/0x5f0 [ 107.874549][T11018] ? kmsan_get_metadata+0x11d/0x180 [ 107.879730][T11018] ? kmsan_get_metadata+0x11d/0x180 [ 107.885039][T11018] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 107.890843][T11018] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 107.897173][T11018] ? prepare_exit_to_usermode+0x1ca/0x520 [ 107.902980][T11018] __se_sys_sendmsg+0x97/0xb0 [ 107.907659][T11018] __x64_sys_sendmsg+0x4a/0x70 [ 107.912418][T11018] do_syscall_64+0xb8/0x160 [ 107.916915][T11018] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 107.922891][T11018] RIP: 0033:0x4402c9 [ 107.926786][T11018] 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 [ 107.946383][T11018] RSP: 002b:00007ffcf6ebba38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 107.954788][T11018] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004402c9 [ 107.962760][T11018] RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003 [ 107.970828][T11018] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 107.978807][T11018] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000401b50 [ 107.986770][T11018] R13: 0000000000401be0 R14: 0000000000000000 R15: 0000000000000000 [ 107.996370][T11018] Kernel Offset: 0x2e800000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 108.008015][T11018] Rebooting in 86400 seconds..