BUG: memory leak
unreferenced object 0xffff88801cfa0880 (size 8):
  comm "syz-executor.6", pid 13287, jiffies 4296416165
  hex dump (first 8 bytes):
    75 74 66 38 00 88 ff ff                          utf8....
  backtrace (crc e26b2c0b):
    [<0000000060b0f6b8>] __kmalloc_node_track_caller_noprof+0x36a/0x490
    [<00000000267d0645>] kstrdup+0x3e/0xc0
    [<00000000a223bafa>] isofs_parse_param+0x313/0x870
    [<00000000480e9c3c>] vfs_parse_fs_param+0x208/0x3d0
    [<000000009a1e85ab>] vfs_parse_fs_string+0xea/0x150
    [<00000000fee37d29>] vfs_parse_monolithic_sep+0x178/0x200
    [<0000000006b10a41>] path_mount+0x136a/0x1ec0
    [<00000000ee49528b>] __x64_sys_mount+0x283/0x300
    [<00000000e798cffc>] do_syscall_64+0xbf/0x1d0
    [<000000000c9abe26>] entry_SYSCALL_64_after_hwframe+0x77/0x7f

BUG: leak checking failed