BUG: memory leak
unreferenced object 0xffff88811d990d20 (size 32):
  comm "syz-executor645", pid 7078, jiffies 4294941170 (age 12.840s)
  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:
    [<000000001f19ac09>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<000000001f19ac09>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<000000001f19ac09>] slab_alloc mm/slab.c:3320 [inline]
    [<000000001f19ac09>] __do_kmalloc mm/slab.c:3654 [inline]
    [<000000001f19ac09>] __kmalloc_track_caller+0x165/0x300 mm/slab.c:3671
    [<0000000053d66921>] kstrdup+0x3a/0x70 mm/util.c:60
    [<0000000076110e07>] nfs23_parse_monolithic fs/nfs/fs_context.c:958 [inline]
    [<0000000076110e07>] nfs_fs_context_parse_monolithic+0x5cf/0x8f0 fs/nfs/fs_context.c:1147
    [<000000007707e035>] parse_monolithic_mount_data+0x37/0x40 fs/fs_context.c:679
    [<0000000029e8793d>] do_new_mount fs/namespace.c:2818 [inline]
    [<0000000029e8793d>] do_mount+0x945/0xc80 fs/namespace.c:3107
    [<00000000db256561>] __do_sys_mount fs/namespace.c:3316 [inline]
    [<00000000db256561>] __se_sys_mount fs/namespace.c:3293 [inline]
    [<00000000db256561>] __x64_sys_mount+0xc0/0x140 fs/namespace.c:3293
    [<00000000e4db7de4>] do_syscall_64+0x73/0x220 arch/x86/entry/common.c:294
    [<00000000208d8c6e>] entry_SYSCALL_64_after_hwframe+0x44/0xa9