netlink: 'syz-executor0': attribute type 21 has an invalid length.
WARNING: kernel stack regs at 00000000016781c9 in syz-executor5:17866 has bad 'bp' value           (null)
unwind stack type:0 next_sp:          (null) mask:0x2 graph_idx:0
00000000c44f244a: ffff88018816ebb0 (0xffff88018816ebb0)
00000000cfca6796: ffffffff812d399d (__save_stack_trace+0x7d/0xf0)
0000000075fd12b1: 0000000000000000 ...
00000000d75d2490: ffff880188168000 (0xffff880188168000)
000000006fb38126: ffff880188170000 (0xffff880188170000)