[ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.249' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 92.806508][ T8814] ===================================================== [ 92.813488][ T8814] BUG: KMSAN: uninit-value in __tipc_nl_compat_dumpit+0x583/0x1290 [ 92.821367][ T8814] CPU: 0 PID: 8814 Comm: syz-executor466 Not tainted 5.6.0-rc7-syzkaller #0 [ 92.830117][ T8814] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 92.840155][ T8814] Call Trace: [ 92.843439][ T8814] dump_stack+0x1c9/0x220 [ 92.847774][ T8814] kmsan_report+0xf7/0x1e0 [ 92.852181][ T8814] __msan_warning+0x58/0xa0 [ 92.856680][ T8814] __tipc_nl_compat_dumpit+0x583/0x1290 [ 92.862210][ T8814] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 92.867997][ T8814] ? kmsan_get_metadata+0x11d/0x180 [ 92.873194][ T8814] ? kmsan_set_origin_checked+0x95/0xf0 [ 92.878737][ T8814] ? kmsan_get_metadata+0x11d/0x180 [ 92.883920][ T8814] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 92.889711][ T8814] ? __alloc_skb+0x762/0xac0 [ 92.894293][ T8814] tipc_nl_compat_dumpit+0x761/0x910 [ 92.899582][ T8814] tipc_nl_compat_recv+0x1382/0x2940 [ 92.904874][ T8814] ? kmsan_get_metadata+0x4f/0x180 [ 92.909970][ T8814] ? __tipc_nl_add_sk_info+0xc80/0xc80 [ 92.915409][ T8814] ? tipc_nl_compat_name_table_dump+0xbb0/0xbb0 [ 92.921635][ T8814] ? tipc_netlink_compat_stop+0x40/0x40 [ 92.927170][ T8814] genl_rcv_msg+0x20dc/0x2480 [ 92.931869][ T8814] netlink_rcv_skb+0x451/0x650 [ 92.936892][ T8814] ? genl_unbind+0x380/0x380 [ 92.941610][ T8814] genl_rcv+0x63/0x80 [ 92.945632][ T8814] netlink_unicast+0xf9e/0x1100 [ 92.950507][ T8814] ? genl_pernet_exit+0x90/0x90 [ 92.955360][ T8814] netlink_sendmsg+0x1246/0x14d0 [ 92.960424][ T8814] ? netlink_getsockopt+0x1440/0x1440 [ 92.965788][ T8814] ____sys_sendmsg+0x12b6/0x1350 [ 92.970742][ T8814] __sys_sendmsg+0x451/0x5f0 [ 92.975343][ T8814] ? __fpregs_load_activate+0x38c/0x3c0 [ 92.980875][ T8814] ? kmsan_get_metadata+0x11d/0x180 [ 92.986143][ T8814] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 92.991947][ T8814] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 92.997995][ T8814] ? prepare_exit_to_usermode+0x1ca/0x520 [ 93.003692][ T8814] ? kmsan_get_metadata+0x4f/0x180 [ 93.008784][ T8814] ? kmsan_get_metadata+0x4f/0x180 [ 93.013876][ T8814] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 93.019679][ T8814] __ia32_compat_sys_sendmsg+0xed/0x130 [ 93.025223][ T8814] ? compat_mc_getsockopt+0x19a0/0x19a0 [ 93.030770][ T8814] do_fast_syscall_32+0x3c7/0x6e0 [ 93.035817][ T8814] entry_SYSENTER_compat+0x68/0x77 [ 93.040923][ T8814] RIP: 0023:0xf7f34d99 [ 93.045111][ T8814] Code: 90 e8 0b 00 00 00 f3 90 0f ae e8 eb f9 8d 74 26 00 89 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 93.064988][ T8814] RSP: 002b:00000000ff982b4c EFLAGS: 00000246 ORIG_RAX: 0000000000000172 [ 93.073395][ T8814] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000300 [ 93.081358][ T8814] RDX: 0000000000000000 RSI: 00000000080ef080 RDI: 00000000ff982ba0 [ 93.089324][ T8814] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 93.097280][ T8814] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 93.105249][ T8814] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 93.113235][ T8814] [ 93.115545][ T8814] Uninit was created at: [ 93.119784][ T8814] kmsan_internal_poison_shadow+0x66/0xd0 [ 93.125500][ T8814] kmsan_slab_alloc+0x8a/0xe0 [ 93.130173][ T8814] __kmalloc_node_track_caller+0xb40/0x1200 [ 93.136077][ T8814] __alloc_skb+0x2fd/0xac0 [ 93.140782][ T8814] tipc_nl_compat_dumpit+0x6e4/0x910 [ 93.146159][ T8814] tipc_nl_compat_recv+0x1382/0x2940 [ 93.151429][ T8814] genl_rcv_msg+0x20dc/0x2480 [ 93.156181][ T8814] netlink_rcv_skb+0x451/0x650 [ 93.160939][ T8814] genl_rcv+0x63/0x80 [ 93.164915][ T8814] netlink_unicast+0xf9e/0x1100 [ 93.169756][ T8814] netlink_sendmsg+0x1246/0x14d0 [ 93.174684][ T8814] ____sys_sendmsg+0x12b6/0x1350 [ 93.179685][ T8814] __sys_sendmsg+0x451/0x5f0 [ 93.184270][ T8814] __ia32_compat_sys_sendmsg+0xed/0x130 [ 93.189882][ T8814] do_fast_syscall_32+0x3c7/0x6e0 [ 93.194886][ T8814] entry_SYSENTER_compat+0x68/0x77 [ 93.200058][ T8814] ===================================================== [ 93.206981][ T8814] Disabling lock debugging due to kernel taint [ 93.213123][ T8814] Kernel panic - not syncing: panic_on_warn set ... [ 93.219694][ T8814] CPU: 0 PID: 8814 Comm: syz-executor466 Tainted: G B 5.6.0-rc7-syzkaller #0 [ 93.229729][ T8814] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 93.239766][ T8814] Call Trace: [ 93.243043][ T8814] dump_stack+0x1c9/0x220 [ 93.247357][ T8814] panic+0x3d5/0xc3e [ 93.251267][ T8814] kmsan_report+0x1df/0x1e0 [ 93.255764][ T8814] __msan_warning+0x58/0xa0 [ 93.260276][ T8814] __tipc_nl_compat_dumpit+0x583/0x1290 [ 93.265814][ T8814] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 93.271616][ T8814] ? kmsan_get_metadata+0x11d/0x180 [ 93.276796][ T8814] ? kmsan_set_origin_checked+0x95/0xf0 [ 93.282326][ T8814] ? kmsan_get_metadata+0x11d/0x180 [ 93.288046][ T8814] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 93.293927][ T8814] ? __alloc_skb+0x762/0xac0 [ 93.298516][ T8814] tipc_nl_compat_dumpit+0x761/0x910 [ 93.304049][ T8814] tipc_nl_compat_recv+0x1382/0x2940 [ 93.309347][ T8814] ? kmsan_get_metadata+0x4f/0x180 [ 93.314452][ T8814] ? __tipc_nl_add_sk_info+0xc80/0xc80 [ 93.319911][ T8814] ? tipc_nl_compat_name_table_dump+0xbb0/0xbb0 [ 93.326166][ T8814] ? tipc_netlink_compat_stop+0x40/0x40 [ 93.331700][ T8814] genl_rcv_msg+0x20dc/0x2480 [ 93.336395][ T8814] netlink_rcv_skb+0x451/0x650 [ 93.341151][ T8814] ? genl_unbind+0x380/0x380 [ 93.345750][ T8814] genl_rcv+0x63/0x80 [ 93.349714][ T8814] netlink_unicast+0xf9e/0x1100 [ 93.354550][ T8814] ? genl_pernet_exit+0x90/0x90 [ 93.359579][ T8814] netlink_sendmsg+0x1246/0x14d0 [ 93.364510][ T8814] ? netlink_getsockopt+0x1440/0x1440 [ 93.369874][ T8814] ____sys_sendmsg+0x12b6/0x1350 [ 93.374826][ T8814] __sys_sendmsg+0x451/0x5f0 [ 93.379409][ T8814] ? __fpregs_load_activate+0x38c/0x3c0 [ 93.384938][ T8814] ? kmsan_get_metadata+0x11d/0x180 [ 93.390134][ T8814] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 93.395932][ T8814] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 93.401993][ T8814] ? prepare_exit_to_usermode+0x1ca/0x520 [ 93.407735][ T8814] ? kmsan_get_metadata+0x4f/0x180 [ 93.412843][ T8814] ? kmsan_get_metadata+0x4f/0x180 [ 93.417935][ T8814] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 93.423727][ T8814] __ia32_compat_sys_sendmsg+0xed/0x130 [ 93.429258][ T8814] ? compat_mc_getsockopt+0x19a0/0x19a0 [ 93.434783][ T8814] do_fast_syscall_32+0x3c7/0x6e0 [ 93.439799][ T8814] entry_SYSENTER_compat+0x68/0x77 [ 93.444891][ T8814] RIP: 0023:0xf7f34d99 [ 93.448956][ T8814] Code: 90 e8 0b 00 00 00 f3 90 0f ae e8 eb f9 8d 74 26 00 89 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 93.468560][ T8814] RSP: 002b:00000000ff982b4c EFLAGS: 00000246 ORIG_RAX: 0000000000000172 [ 93.476967][ T8814] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000300 [ 93.484922][ T8814] RDX: 0000000000000000 RSI: 00000000080ef080 RDI: 00000000ff982ba0 [ 93.492898][ T8814] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 93.500862][ T8814] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 93.509062][ T8814] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 93.518317][ T8814] Kernel Offset: 0x27e00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 93.529952][ T8814] Rebooting in 86400 seconds..