| TITLE: KMSAN: uninit-value in __tipc_nl_bearer_enable |
| |
| [ 605.537422] ================================================================== |
| [ 605.544832] BUG: KMSAN: uninit-value in strncpy+0x265/0x590 |
| [ 605.550586] CPU: 1 PID: 23408 Comm: syz-executor4 Not tainted 4.20.0-rc5+ #112 |
| [ 605.557987] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 |
| [ 605.567345] Call Trace: |
| [ 605.569954] dump_stack+0x1c9/0x220 |
| [ 605.573639] kmsan_report+0x12d/0x290 |
| [ 605.577498] __msan_warning+0x76/0xc0 |
| [ 605.581329] strncpy+0x265/0x590 |
| [ 605.584752] __tipc_nl_bearer_enable+0x674/0x1da0 |
| [ 605.589667] ? kmsan_internal_unpoison_shadow+0x2f/0x40 |
| [ 605.595083] ? __msan_metadata_ptr_for_load_1+0x10/0x20 |
| [ 605.600498] ? mutex_lock+0xb3/0x120 |
| [ 605.604268] tipc_nl_bearer_enable+0x6c/0xb0 |
| [ 605.608766] ? __tipc_nl_bearer_enable+0x1da0/0x1da0 |
| [ 605.613896] genl_rcv_msg+0x185f/0x1a60 |
| [ 605.618001] ? __msan_poison_alloca+0x1e0/0x270 |
| [ 605.622743] netlink_rcv_skb+0x444/0x640 |
| [ 605.626841] ? genl_unbind+0x390/0x390 |
| [ 605.630796] genl_rcv+0x63/0x80 |
| [ 605.634114] netlink_unicast+0xf80/0x1060 |
| [ 605.638336] netlink_sendmsg+0x129d/0x1310 |
| [ 605.642649] ___sys_sendmsg+0xdbc/0x11d0 |
| [ 605.646756] ? netlink_getsockopt+0x15f0/0x15f0 |
| [ 605.651483] ? kmsan_internal_unpoison_shadow+0x2f/0x40 |
| [ 605.656883] ? __msan_metadata_ptr_for_load_1+0x10/0x20 |
| [ 605.662273] ? __fget_light+0x714/0x780 |
| [ 605.666327] __se_sys_sendmsg+0x305/0x460 |
| [ 605.670551] __x64_sys_sendmsg+0x4a/0x70 |
| [ 605.674655] do_syscall_64+0xcd/0x110 |
| [ 605.679030] entry_SYSCALL_64_after_hwframe+0x63/0xe7 |
| [ 605.684255] RIP: 0033:0x457679 |
| [ 605.687469] Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 |
| [ 605.706398] RSP: 002b:00007f1ebbf04c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e |
| [ 605.714134] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457679 |
| [ 605.721418] RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000006 |
| [ 605.728702] RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 |
| [ 605.735989] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1ebbf056d4 |
| [ 605.743288] R13: 00000000004c423b R14: 00000000004d7180 R15: 00000000ffffffff |
| [ 605.750605] |
| [ 605.752246] Uninit was created at: |
| [ 605.755829] kmsan_internal_poison_shadow+0x92/0x150 |
| [ 605.760964] kmsan_kmalloc+0xa1/0x100 |
| [ 605.764781] kmsan_slab_alloc+0xe/0x10 |
| [ 605.768696] __kmalloc_node_track_caller+0xf06/0x1120 |
| [ 605.773907] __alloc_skb+0x318/0xa40 |
| [ 605.777642] netlink_sendmsg+0xba0/0x1310 |
| [ 605.781812] ___sys_sendmsg+0xdbc/0x11d0 |
| [ 605.785916] __se_sys_sendmsg+0x305/0x460 |
| [ 605.790128] __x64_sys_sendmsg+0x4a/0x70 |
| [ 605.794222] do_syscall_64+0xcd/0x110 |
| [ 605.798039] entry_SYSCALL_64_after_hwframe+0x63/0xe7 |
| [ 605.803235] ================================================================== |
