[ 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 '10.128.0.232' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 80.864535][ T8431] ===================================================== [ 80.871608][ T8431] BUG: KMSAN: uninit-value in strstr+0xfe/0x2e0 [ 80.877825][ T8431] CPU: 0 PID: 8431 Comm: syz-executor953 Not tainted 5.8.0-rc5-syzkaller #0 [ 80.886513][ T8431] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.896586][ T8431] Call Trace: [ 80.899855][ T8431] dump_stack+0x1df/0x240 [ 80.904172][ T8431] kmsan_report+0xf7/0x1e0 [ 80.908567][ T8431] __msan_warning+0x58/0xa0 [ 80.913044][ T8431] strstr+0xfe/0x2e0 [ 80.916917][ T8431] ? strcmp+0x95/0x170 [ 80.920973][ T8431] tipc_nl_node_reset_link_stats+0x434/0xa90 [ 80.926938][ T8431] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 80.932717][ T8431] ? tipc_nl_node_get_link+0x9f0/0x9f0 [ 80.938149][ T8431] genl_rcv_msg+0x1592/0x1740 [ 80.942808][ T8431] ? kmsan_set_origin_checked+0x95/0xf0 [ 80.948333][ T8431] netlink_rcv_skb+0x451/0x650 [ 80.953070][ T8431] ? genl_rcv+0x80/0x80 [ 80.957203][ T8431] genl_rcv+0x63/0x80 [ 80.961160][ T8431] netlink_unicast+0xf9e/0x1100 [ 80.965986][ T8431] ? genl_pernet_exit+0x90/0x90 [ 80.970815][ T8431] netlink_sendmsg+0x1246/0x14d0 [ 80.975735][ T8431] ? netlink_getsockopt+0x1440/0x1440 [ 80.981184][ T8431] ____sys_sendmsg+0x1370/0x1400 [ 80.986109][ T8431] __sys_sendmsg+0x623/0x750 [ 80.990684][ T8431] ? kmsan_internal_unpoison_shadow+0x2f/0x40 [ 80.996729][ T8431] ? __fpregs_load_activate+0x38c/0x3c0 [ 81.002248][ T8431] ? kmsan_get_metadata+0x11d/0x180 [ 81.007473][ T8431] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 81.013253][ T8431] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 81.019383][ T8431] ? __prepare_exit_to_usermode+0x16c/0x4d0 [ 81.025266][ T8431] __se_sys_sendmsg+0x97/0xb0 [ 81.029920][ T8431] __x64_sys_sendmsg+0x4a/0x70 [ 81.034662][ T8431] do_syscall_64+0xb0/0x150 [ 81.039141][ T8431] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 81.045128][ T8431] RIP: 0033:0x444249 [ 81.049018][ T8431] Code: Bad RIP value. [ 81.053056][ T8431] RSP: 002b:00007ffe249b7e28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 81.061441][ T8431] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000444249 [ 81.069385][ T8431] RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003 [ 81.077348][ T8431] RBP: 00000000006ce018 R08: 0000000000000000 R09: 00000000004002e0 [ 81.085295][ T8431] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401e70 [ 81.093241][ T8431] R13: 0000000000401f00 R14: 0000000000000000 R15: 0000000000000000 [ 81.101195][ T8431] [ 81.103498][ T8431] Uninit was created at: [ 81.107718][ T8431] kmsan_internal_poison_shadow+0x66/0xd0 [ 81.113411][ T8431] kmsan_slab_alloc+0x8a/0xe0 [ 81.118061][ T8431] __kmalloc_node_track_caller+0xb40/0x1200 [ 81.123927][ T8431] __alloc_skb+0x2fd/0xac0 [ 81.128348][ T8431] netlink_sendmsg+0x7d3/0x14d0 [ 81.133187][ T8431] ____sys_sendmsg+0x1370/0x1400 [ 81.138110][ T8431] __sys_sendmsg+0x623/0x750 [ 81.142672][ T8431] __se_sys_sendmsg+0x97/0xb0 [ 81.147321][ T8431] __x64_sys_sendmsg+0x4a/0x70 [ 81.152056][ T8431] do_syscall_64+0xb0/0x150 [ 81.156533][ T8431] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 81.162393][ T8431] ===================================================== [ 81.169294][ T8431] Disabling lock debugging due to kernel taint [ 81.175419][ T8431] Kernel panic - not syncing: panic_on_warn set ... [ 81.181980][ T8431] CPU: 0 PID: 8431 Comm: syz-executor953 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 81.192008][ T8431] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.202037][ T8431] Call Trace: [ 81.205317][ T8431] dump_stack+0x1df/0x240 [ 81.209640][ T8431] panic+0x3d5/0xc3e [ 81.213539][ T8431] kmsan_report+0x1df/0x1e0 [ 81.218024][ T8431] __msan_warning+0x58/0xa0 [ 81.222504][ T8431] strstr+0xfe/0x2e0 [ 81.226377][ T8431] ? strcmp+0x95/0x170 [ 81.230430][ T8431] tipc_nl_node_reset_link_stats+0x434/0xa90 [ 81.236393][ T8431] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 81.242176][ T8431] ? tipc_nl_node_get_link+0x9f0/0x9f0 [ 81.247610][ T8431] genl_rcv_msg+0x1592/0x1740 [ 81.252271][ T8431] ? kmsan_set_origin_checked+0x95/0xf0 [ 81.257810][ T8431] netlink_rcv_skb+0x451/0x650 [ 81.262560][ T8431] ? genl_rcv+0x80/0x80 [ 81.266700][ T8431] genl_rcv+0x63/0x80 [ 81.270669][ T8431] netlink_unicast+0xf9e/0x1100 [ 81.275501][ T8431] ? genl_pernet_exit+0x90/0x90 [ 81.280334][ T8431] netlink_sendmsg+0x1246/0x14d0 [ 81.285270][ T8431] ? netlink_getsockopt+0x1440/0x1440 [ 81.290625][ T8431] ____sys_sendmsg+0x1370/0x1400 [ 81.295552][ T8431] __sys_sendmsg+0x623/0x750 [ 81.300131][ T8431] ? kmsan_internal_unpoison_shadow+0x2f/0x40 [ 81.306179][ T8431] ? __fpregs_load_activate+0x38c/0x3c0 [ 81.311699][ T8431] ? kmsan_get_metadata+0x11d/0x180 [ 81.316887][ T8431] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 81.322672][ T8431] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 81.328802][ T8431] ? __prepare_exit_to_usermode+0x16c/0x4d0 [ 81.334679][ T8431] __se_sys_sendmsg+0x97/0xb0 [ 81.339381][ T8431] __x64_sys_sendmsg+0x4a/0x70 [ 81.344173][ T8431] do_syscall_64+0xb0/0x150 [ 81.348654][ T8431] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 81.354524][ T8431] RIP: 0033:0x444249 [ 81.358388][ T8431] Code: Bad RIP value. [ 81.362429][ T8431] RSP: 002b:00007ffe249b7e28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 81.370812][ T8431] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000444249 [ 81.378758][ T8431] RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003 [ 81.386706][ T8431] RBP: 00000000006ce018 R08: 0000000000000000 R09: 00000000004002e0 [ 81.394674][ T8431] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401e70 [ 81.402620][ T8431] R13: 0000000000401f00 R14: 0000000000000000 R15: 0000000000000000 [ 81.411815][ T8431] Kernel Offset: 0x1f800000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 81.423453][ T8431] Rebooting in 86400 seconds..