[ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. [ 73.683055][ T8775] sshd (8775) used greatest stack depth: 4224 bytes left Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.71' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 81.670050][ T8825] ===================================================== [ 81.677109][ T8825] BUG: KMSAN: uninit-value in __tipc_nl_compat_dumpit+0x583/0x1290 [ 81.685075][ T8825] CPU: 0 PID: 8825 Comm: syz-executor230 Not tainted 5.7.0-rc4-syzkaller #0 [ 81.693731][ T8825] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.703894][ T8825] Call Trace: [ 81.707218][ T8825] dump_stack+0x1c9/0x220 [ 81.711534][ T8825] kmsan_report+0xf7/0x1e0 [ 81.716081][ T8825] __msan_warning+0x58/0xa0 [ 81.720564][ T8825] __tipc_nl_compat_dumpit+0x583/0x1290 [ 81.726108][ T8825] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 81.731979][ T8825] ? kmsan_get_metadata+0x11d/0x180 [ 81.737221][ T8825] ? kmsan_get_metadata+0x11d/0x180 [ 81.742401][ T8825] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 81.748202][ T8825] ? __alloc_skb+0x762/0xac0 [ 81.752977][ T8825] tipc_nl_compat_dumpit+0x761/0x910 [ 81.758246][ T8825] tipc_nl_compat_recv+0x1382/0x2940 [ 81.763518][ T8825] ? kmsan_get_metadata+0x4f/0x180 [ 81.768695][ T8825] ? __tipc_nl_add_sk_info+0xc80/0xc80 [ 81.774133][ T8825] ? tipc_nl_compat_name_table_dump+0xbb0/0xbb0 [ 81.781569][ T8825] ? tipc_netlink_compat_stop+0x40/0x40 [ 81.787535][ T8825] genl_rcv_msg+0x20dc/0x2480 [ 81.792210][ T8825] netlink_rcv_skb+0x451/0x650 [ 81.796955][ T8825] ? genl_unbind+0x380/0x380 [ 81.801703][ T8825] genl_rcv+0x63/0x80 [ 81.805679][ T8825] netlink_unicast+0xf9e/0x1100 [ 81.810597][ T8825] ? genl_pernet_exit+0x90/0x90 [ 81.815516][ T8825] netlink_sendmsg+0x1246/0x14d0 [ 81.820443][ T8825] ? netlink_getsockopt+0x1440/0x1440 [ 81.826142][ T8825] ____sys_sendmsg+0x12b6/0x1350 [ 81.831229][ T8825] __sys_sendmsg+0x623/0x750 [ 81.835842][ T8825] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 81.841621][ T8825] ? kmsan_get_metadata+0x11d/0x180 [ 81.846821][ T8825] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 81.853173][ T8825] ? kmsan_get_metadata+0x11d/0x180 [ 81.858380][ T8825] ? kmsan_get_metadata+0x11d/0x180 [ 81.863647][ T8825] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 81.869441][ T8825] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 81.875939][ T8825] ? prepare_exit_to_usermode+0x1ca/0x520 [ 81.881670][ T8825] __se_sys_sendmsg+0x97/0xb0 [ 81.886484][ T8825] __x64_sys_sendmsg+0x4a/0x70 [ 81.891264][ T8825] do_syscall_64+0xb8/0x160 [ 81.897313][ T8825] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 81.903322][ T8825] RIP: 0033:0x444219 [ 81.907231][ T8825] 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 [ 81.927658][ T8825] RSP: 002b:00007ffded8626b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 81.936258][ T8825] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000444219 [ 81.944727][ T8825] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 [ 81.953121][ T8825] RBP: 00000000006ce018 R08: 00000000004002e0 R09: 00000000004002e0 [ 81.961069][ T8825] R10: 0000000000001900 R11: 0000000000000246 R12: 0000000000401ec0 [ 81.969020][ T8825] R13: 0000000000401f50 R14: 0000000000000000 R15: 0000000000000000 [ 81.976995][ T8825] [ 81.979299][ T8825] Uninit was created at: [ 81.983550][ T8825] kmsan_internal_poison_shadow+0x66/0xd0 [ 81.989249][ T8825] kmsan_slab_alloc+0x8a/0xe0 [ 81.993910][ T8825] __kmalloc_node_track_caller+0xb40/0x1200 [ 81.999928][ T8825] __alloc_skb+0x2fd/0xac0 [ 82.004337][ T8825] tipc_nl_compat_dumpit+0x6e4/0x910 [ 82.009619][ T8825] tipc_nl_compat_recv+0x1382/0x2940 [ 82.014886][ T8825] genl_rcv_msg+0x20dc/0x2480 [ 82.019541][ T8825] netlink_rcv_skb+0x451/0x650 [ 82.024307][ T8825] genl_rcv+0x63/0x80 [ 82.028285][ T8825] netlink_unicast+0xf9e/0x1100 [ 82.033248][ T8825] netlink_sendmsg+0x1246/0x14d0 [ 82.038278][ T8825] ____sys_sendmsg+0x12b6/0x1350 [ 82.043283][ T8825] __sys_sendmsg+0x623/0x750 [ 82.047857][ T8825] __se_sys_sendmsg+0x97/0xb0 [ 82.052696][ T8825] __x64_sys_sendmsg+0x4a/0x70 [ 82.057437][ T8825] do_syscall_64+0xb8/0x160 [ 82.061920][ T8825] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 82.067785][ T8825] ===================================================== [ 82.074809][ T8825] Disabling lock debugging due to kernel taint [ 82.081170][ T8825] Kernel panic - not syncing: panic_on_warn set ... [ 82.087745][ T8825] CPU: 0 PID: 8825 Comm: syz-executor230 Tainted: G B 5.7.0-rc4-syzkaller #0 [ 82.097784][ T8825] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.107910][ T8825] Call Trace: [ 82.111183][ T8825] dump_stack+0x1c9/0x220 [ 82.115496][ T8825] panic+0x3d5/0xc3e [ 82.119395][ T8825] kmsan_report+0x1df/0x1e0 [ 82.123894][ T8825] __msan_warning+0x58/0xa0 [ 82.128464][ T8825] __tipc_nl_compat_dumpit+0x583/0x1290 [ 82.134171][ T8825] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 82.139970][ T8825] ? kmsan_get_metadata+0x11d/0x180 [ 82.145259][ T8825] ? kmsan_get_metadata+0x11d/0x180 [ 82.150446][ T8825] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 82.156251][ T8825] ? __alloc_skb+0x762/0xac0 [ 82.160913][ T8825] tipc_nl_compat_dumpit+0x761/0x910 [ 82.166204][ T8825] tipc_nl_compat_recv+0x1382/0x2940 [ 82.171482][ T8825] ? kmsan_get_metadata+0x4f/0x180 [ 82.177027][ T8825] ? __tipc_nl_add_sk_info+0xc80/0xc80 [ 82.182478][ T8825] ? tipc_nl_compat_name_table_dump+0xbb0/0xbb0 [ 82.188697][ T8825] ? tipc_netlink_compat_stop+0x40/0x40 [ 82.194910][ T8825] genl_rcv_msg+0x20dc/0x2480 [ 82.199598][ T8825] netlink_rcv_skb+0x451/0x650 [ 82.204491][ T8825] ? genl_unbind+0x380/0x380 [ 82.209070][ T8825] genl_rcv+0x63/0x80 [ 82.213037][ T8825] netlink_unicast+0xf9e/0x1100 [ 82.217874][ T8825] ? genl_pernet_exit+0x90/0x90 [ 82.224019][ T8825] netlink_sendmsg+0x1246/0x14d0 [ 82.228947][ T8825] ? netlink_getsockopt+0x1440/0x1440 [ 82.234317][ T8825] ____sys_sendmsg+0x12b6/0x1350 [ 82.239243][ T8825] __sys_sendmsg+0x623/0x750 [ 82.243819][ T8825] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 82.249777][ T8825] ? kmsan_get_metadata+0x11d/0x180 [ 82.254962][ T8825] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 82.261786][ T8825] ? kmsan_get_metadata+0x11d/0x180 [ 82.266966][ T8825] ? kmsan_get_metadata+0x11d/0x180 [ 82.272144][ T8825] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 82.277932][ T8825] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 82.283982][ T8825] ? prepare_exit_to_usermode+0x1ca/0x520 [ 82.289944][ T8825] __se_sys_sendmsg+0x97/0xb0 [ 82.294603][ T8825] __x64_sys_sendmsg+0x4a/0x70 [ 82.299345][ T8825] do_syscall_64+0xb8/0x160 [ 82.303850][ T8825] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 82.309740][ T8825] RIP: 0033:0x444219 [ 82.313621][ T8825] 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 [ 82.333210][ T8825] RSP: 002b:00007ffded8626b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 82.341723][ T8825] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000444219 [ 82.349687][ T8825] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 [ 82.357816][ T8825] RBP: 00000000006ce018 R08: 00000000004002e0 R09: 00000000004002e0 [ 82.365998][ T8825] R10: 0000000000001900 R11: 0000000000000246 R12: 0000000000401ec0 [ 82.374041][ T8825] R13: 0000000000401f50 R14: 0000000000000000 R15: 0000000000000000 [ 82.383577][ T8825] Kernel Offset: 0x12e00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 82.395392][ T8825] Rebooting in 86400 seconds..