BUG: memory leak
unreferenced object 0xffff888109fc8ae0 (size 32):
  comm "syz-executor190", pid 7284, jiffies 4294945441 (age 12.700s)
  hex dump (first 32 bytes):
    00 66 73 00 00 00 00 00 00 00 00 00 00 00 00 00  .fs.............
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<00000000b9543427>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b9543427>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<00000000b9543427>] slab_alloc mm/slab.c:3320 [inline]
    [<00000000b9543427>] __do_kmalloc mm/slab.c:3654 [inline]
    [<00000000b9543427>] __kmalloc_track_caller+0x165/0x300 mm/slab.c:3671
    [<0000000023a1bec8>] kstrdup+0x3a/0x70 mm/util.c:60
    [<0000000007b53dd7>] nfs23_parse_monolithic fs/nfs/fs_context.c:958 [inline]
    [<0000000007b53dd7>] nfs_fs_context_parse_monolithic+0x5cf/0x8f0 fs/nfs/fs_context.c:1147
    [<00000000d27b85db>] parse_monolithic_mount_data+0x37/0x40 fs/fs_context.c:679
    [<000000006eb66900>] do_new_mount fs/namespace.c:2818 [inline]
    [<000000006eb66900>] do_mount+0x945/0xc80 fs/namespace.c:3107
    [<0000000071af6db5>] __do_sys_mount fs/namespace.c:3316 [inline]
    [<0000000071af6db5>] __se_sys_mount fs/namespace.c:3293 [inline]
    [<0000000071af6db5>] __x64_sys_mount+0xc0/0x140 fs/namespace.c:3293
    [<00000000e5291b80>] do_syscall_64+0x73/0x220 arch/x86/entry/common.c:294
    [<000000004509dc11>] entry_SYSCALL_64_after_hwframe+0x44/0xa9