BUG: memory leak
unreferenced object 0xffff8880193795e0 (size 8):
  comm "syz-executor.7", pid 20622, jiffies 4297970573
  hex dump (first 8 bytes):
    65 75 63 2d 6a 70 00 ff                          euc-jp..
  backtrace (crc bc0257a8):
    [<0000000016f07fb6>] __kmalloc_node_track_caller_noprof+0x36a/0x490
    [<00000000c627ca4a>] kstrdup+0x3e/0xc0
    [<0000000082d716e2>] isofs_parse_param+0x589/0x870
    [<0000000000b83e4a>] vfs_parse_fs_param+0x208/0x3d0
    [<000000008c4c8b15>] vfs_parse_fs_string+0xea/0x150
    [<0000000021a6c540>] vfs_parse_monolithic_sep+0x178/0x200
    [<0000000058f58380>] path_mount+0x136a/0x1ec0
    [<00000000cc8d7390>] __x64_sys_mount+0x283/0x300
    [<00000000bae6c56b>] do_syscall_64+0xbf/0x1d0
    [<00000000ecc205dc>] entry_SYSCALL_64_after_hwframe+0x77/0x7f

BUG: leak checking failed