mount$9p_fd(0x0, &(0x7f0000000080)='./file0\x00', &(0x7f00000000c0), 0x0, &(0x7f00000002c0)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}}) (fail_nth: 17)
BUG: memory leak
unreferenced object 0xffff88800e0b1700 (size 128):
  comm "syz-executor.6", pid 5573, jiffies 4295146083
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace (crc 96bdc52d):
    __kmalloc_cache_noprof+0x4a4/0x730
    v9fs_init_fs_context+0x49/0x5b0
    alloc_fs_context+0x56d/0xb10
    path_mount+0xce2/0x2150
    __x64_sys_mount+0x293/0x310
    do_syscall_64+0xbf/0x420
    entry_SYSCALL_64_after_hwframe+0x77/0x7f

BUG: leak checking failed