[ OK ] Started OpenBSD Secure Shell server. [ 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.231' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 89.600915][ T8470] ===================================================== [ 89.608014][ T8470] BUG: KMSAN: uninit-value in __tipc_nl_compat_dumpit+0x583/0x1290 [ 89.615886][ T8470] CPU: 0 PID: 8470 Comm: syz-executor805 Not tainted 5.8.0-rc5-syzkaller #0 [ 89.624537][ T8470] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 89.635900][ T8470] Call Trace: [ 89.639179][ T8470] dump_stack+0x1df/0x240 [ 89.643502][ T8470] kmsan_report+0xf7/0x1e0 [ 89.647953][ T8470] __msan_warning+0x58/0xa0 [ 89.652458][ T8470] __tipc_nl_compat_dumpit+0x583/0x1290 [ 89.657986][ T8470] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 89.663772][ T8470] ? kmsan_get_metadata+0x11d/0x180 [ 89.668961][ T8470] ? kmsan_get_metadata+0x11d/0x180 [ 89.674141][ T8470] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 89.679945][ T8470] ? __alloc_skb+0x762/0xac0 [ 89.684557][ T8470] tipc_nl_compat_dumpit+0x761/0x910 [ 89.689849][ T8470] tipc_nl_compat_recv+0x1382/0x2940 [ 89.695121][ T8470] ? kmsan_get_metadata+0x4f/0x180 [ 89.700222][ T8470] ? __tipc_nl_add_sk_info+0xc80/0xc80 [ 89.705662][ T8470] ? tipc_nl_compat_name_table_dump+0xbb0/0xbb0 [ 89.711888][ T8470] ? tipc_netlink_compat_stop+0x40/0x40 [ 89.717419][ T8470] genl_rcv_msg+0x1592/0x1740 [ 89.722109][ T8470] ? kmsan_set_origin_checked+0x95/0xf0 [ 89.727671][ T8470] netlink_rcv_skb+0x451/0x650 [ 89.732420][ T8470] ? genl_rcv+0x80/0x80 [ 89.746558][ T8470] genl_rcv+0x63/0x80 [ 89.750540][ T8470] netlink_unicast+0xf9e/0x1100 [ 89.755376][ T8470] ? genl_pernet_exit+0x90/0x90 [ 89.760230][ T8470] netlink_sendmsg+0x1246/0x14d0 [ 89.765168][ T8470] ? netlink_getsockopt+0x1440/0x1440 [ 89.770524][ T8470] ____sys_sendmsg+0x1370/0x1400 [ 89.775467][ T8470] __sys_sendmsg+0x623/0x750 [ 89.780062][ T8470] ? kmsan_internal_unpoison_shadow+0x2f/0x40 [ 89.786122][ T8470] ? __fpregs_load_activate+0x38c/0x3c0 [ 89.791663][ T8470] ? kmsan_get_metadata+0x11d/0x180 [ 89.796845][ T8470] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 89.802635][ T8470] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 89.808771][ T8470] ? __prepare_exit_to_usermode+0x16c/0x4d0 [ 89.814664][ T8470] __se_sys_sendmsg+0x97/0xb0 [ 89.819341][ T8470] __x64_sys_sendmsg+0x4a/0x70 [ 89.824105][ T8470] do_syscall_64+0xb0/0x150 [ 89.828596][ T8470] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 89.834480][ T8470] RIP: 0033:0x444249 [ 89.838348][ T8470] Code: Bad RIP value. [ 89.842390][ T8470] RSP: 002b:00007ffdbf8a0e08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 89.850779][ T8470] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000444249 [ 89.858733][ T8470] RDX: 0000000000000804 RSI: 00000000200000c0 RDI: 0000000000000003 [ 89.866708][ T8470] RBP: 00000000006ce018 R08: 0000000000000000 R09: 00000000004002e0 [ 89.874669][ T8470] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401e70 [ 89.882629][ T8470] R13: 0000000000401f00 R14: 0000000000000000 R15: 0000000000000000 [ 89.890607][ T8470] [ 89.892911][ T8470] Uninit was created at: [ 89.897151][ T8470] kmsan_internal_poison_shadow+0x66/0xd0 [ 89.902851][ T8470] kmsan_slab_alloc+0x8a/0xe0 [ 89.907515][ T8470] __kmalloc_node_track_caller+0xb40/0x1200 [ 89.913399][ T8470] __alloc_skb+0x2fd/0xac0 [ 89.917815][ T8470] tipc_nl_compat_dumpit+0x6e4/0x910 [ 89.923080][ T8470] tipc_nl_compat_recv+0x1382/0x2940 [ 89.928346][ T8470] genl_rcv_msg+0x1592/0x1740 [ 89.933000][ T8470] netlink_rcv_skb+0x451/0x650 [ 89.937743][ T8470] genl_rcv+0x63/0x80 [ 89.941702][ T8470] netlink_unicast+0xf9e/0x1100 [ 89.946531][ T8470] netlink_sendmsg+0x1246/0x14d0 [ 89.951444][ T8470] ____sys_sendmsg+0x1370/0x1400 [ 89.956358][ T8470] __sys_sendmsg+0x623/0x750 [ 89.960945][ T8470] __se_sys_sendmsg+0x97/0xb0 [ 89.965618][ T8470] __x64_sys_sendmsg+0x4a/0x70 [ 89.970376][ T8470] do_syscall_64+0xb0/0x150 [ 89.974859][ T8470] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 89.980752][ T8470] ===================================================== [ 89.987659][ T8470] Disabling lock debugging due to kernel taint [ 89.993793][ T8470] Kernel panic - not syncing: panic_on_warn set ... [ 90.000377][ T8470] CPU: 0 PID: 8470 Comm: syz-executor805 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 90.010409][ T8470] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 90.020442][ T8470] Call Trace: [ 90.023720][ T8470] dump_stack+0x1df/0x240 [ 90.028052][ T8470] panic+0x3d5/0xc3e [ 90.031954][ T8470] kmsan_report+0x1df/0x1e0 [ 90.036448][ T8470] __msan_warning+0x58/0xa0 [ 90.040936][ T8470] __tipc_nl_compat_dumpit+0x583/0x1290 [ 90.046463][ T8470] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 90.052267][ T8470] ? kmsan_get_metadata+0x11d/0x180 [ 90.057453][ T8470] ? kmsan_get_metadata+0x11d/0x180 [ 90.062633][ T8470] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 90.068422][ T8470] ? __alloc_skb+0x762/0xac0 [ 90.073023][ T8470] tipc_nl_compat_dumpit+0x761/0x910 [ 90.078301][ T8470] tipc_nl_compat_recv+0x1382/0x2940 [ 90.083572][ T8470] ? kmsan_get_metadata+0x4f/0x180 [ 90.088674][ T8470] ? __tipc_nl_add_sk_info+0xc80/0xc80 [ 90.094130][ T8470] ? tipc_nl_compat_name_table_dump+0xbb0/0xbb0 [ 90.100354][ T8470] ? tipc_netlink_compat_stop+0x40/0x40 [ 90.105902][ T8470] genl_rcv_msg+0x1592/0x1740 [ 90.110589][ T8470] ? kmsan_set_origin_checked+0x95/0xf0 [ 90.116135][ T8470] netlink_rcv_skb+0x451/0x650 [ 90.120932][ T8470] ? genl_rcv+0x80/0x80 [ 90.125084][ T8470] genl_rcv+0x63/0x80 [ 90.129087][ T8470] netlink_unicast+0xf9e/0x1100 [ 90.133929][ T8470] ? genl_pernet_exit+0x90/0x90 [ 90.138800][ T8470] netlink_sendmsg+0x1246/0x14d0 [ 90.143739][ T8470] ? netlink_getsockopt+0x1440/0x1440 [ 90.149094][ T8470] ____sys_sendmsg+0x1370/0x1400 [ 90.154065][ T8470] __sys_sendmsg+0x623/0x750 [ 90.158661][ T8470] ? kmsan_internal_unpoison_shadow+0x2f/0x40 [ 90.164732][ T8470] ? __fpregs_load_activate+0x38c/0x3c0 [ 90.170283][ T8470] ? kmsan_get_metadata+0x11d/0x180 [ 90.175479][ T8470] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 90.181266][ T8470] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 90.187404][ T8470] ? __prepare_exit_to_usermode+0x16c/0x4d0 [ 90.193304][ T8470] __se_sys_sendmsg+0x97/0xb0 [ 90.197979][ T8470] __x64_sys_sendmsg+0x4a/0x70 [ 90.202725][ T8470] do_syscall_64+0xb0/0x150 [ 90.207215][ T8470] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 90.213103][ T8470] RIP: 0033:0x444249 [ 90.216974][ T8470] Code: Bad RIP value. [ 90.221018][ T8470] RSP: 002b:00007ffdbf8a0e08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 90.229409][ T8470] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000444249 [ 90.237360][ T8470] RDX: 0000000000000804 RSI: 00000000200000c0 RDI: 0000000000000003 [ 90.245312][ T8470] RBP: 00000000006ce018 R08: 0000000000000000 R09: 00000000004002e0 [ 90.253263][ T8470] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401e70 [ 90.261214][ T8470] R13: 0000000000401f00 R14: 0000000000000000 R15: 0000000000000000 [ 90.270238][ T8470] Kernel Offset: 0x26600000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 90.281853][ T8470] Rebooting in 86400 seconds..