| TITLE: KMSAN: uninit-value in tipc_nl_node_get_link |
| |
| syzkaller login: [ 41.195107] ================================================================== |
| [ 41.202507] BUG: KMSAN: uninit-value in strcmp+0xf7/0x160 |
| [ 41.208024] CPU: 1 PID: 4527 Comm: syz-executor655 Not tainted 4.16.0+ #87 |
| [ 41.215027] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 |
| [ 41.224359] Call Trace: |
| [ 41.226931] dump_stack+0x185/0x1d0 |
| [ 41.230537] ? strcmp+0xf7/0x160 |
| [ 41.233887] kmsan_report+0x142/0x240 |
| [ 41.237673] __msan_warning_32+0x6c/0xb0 |
| [ 41.241720] strcmp+0xf7/0x160 |
| [ 41.244903] tipc_nl_node_get_link+0x220/0x6f0 |
| [ 41.249462] ? kmsan_set_origin+0x9e/0x160 |
| [ 41.253680] ? tipc_node_find_by_name+0x630/0x630 |
| [ 41.258514] genl_rcv_msg+0x1686/0x1810 |
| [ 41.262477] netlink_rcv_skb+0x378/0x600 |
| [ 41.266518] ? genl_unbind+0x350/0x350 |
| [ 41.270383] genl_rcv+0x63/0x80 |
| [ 41.273639] netlink_unicast+0x166b/0x1740 |
| [ 41.277852] ? genl_pernet_exit+0xa0/0xa0 |
| [ 41.281988] netlink_sendmsg+0x1048/0x1310 |
| [ 41.286206] ? netlink_getsockopt+0xc80/0xc80 |
| [ 41.290701] ___sys_sendmsg+0xec0/0x1310 |
| [ 41.294741] ? do_huge_pmd_anonymous_page+0x19d5/0x2520 |
| [ 41.300086] ? __fdget+0x4e/0x60 |
| [ 41.303431] ? __fget_light+0x56/0x710 |
| [ 41.307294] ? __fdget+0x4e/0x60 |
| [ 41.310641] ? __msan_metadata_ptr_for_load_1+0x10/0x20 |
| [ 41.315983] ? __fget_light+0x6b9/0x710 |
| [ 41.319949] SYSC_sendmsg+0x2a3/0x3d0 |
| [ 41.323731] SyS_sendmsg+0x54/0x80 |
| [ 41.327250] do_syscall_64+0x309/0x430 |
| [ 41.331116] ? ___sys_sendmsg+0x1310/0x1310 |
| [ 41.335417] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 |
| [ 41.340584] RIP: 0033:0x445589 |
| [ 41.343758] RSP: 002b:00007fb7ee66cdb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e |
| [ 41.351441] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000445589 |
| [ 41.358692] RDX: 0000000000000000 RSI: 0000000020023000 RDI: 0000000000000003 |
| [ 41.365942] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 |
| [ 41.373191] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 |
| [ 41.380439] R13: 00007fffa2bf3f3f R14: 00007fb7ee66d9c0 R15: 0000000000000001 |
| [ 41.387717] |
| [ 41.389320] Uninit was created at: |
| [ 41.392842] kmsan_internal_poison_shadow+0xb8/0x1b0 |
| [ 41.397923] kmsan_kmalloc+0x94/0x100 |
| [ 41.401726] kmsan_slab_alloc+0x11/0x20 |
| [ 41.405680] __kmalloc_node_track_caller+0xaed/0x11c0 |
| [ 41.410851] __alloc_skb+0x2cf/0x9f0 |
| [ 41.414566] netlink_sendmsg+0x9a6/0x1310 |
| [ 41.418703] ___sys_sendmsg+0xec0/0x1310 |
| [ 41.422744] SYSC_sendmsg+0x2a3/0x3d0 |
| [ 41.426521] SyS_sendmsg+0x54/0x80 |
| [ 41.430048] do_syscall_64+0x309/0x430 |
| [ 41.433923] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 |
| [ 41.439088] ================================================================== |
