sendmmsg$inet6(r0, &(0x7f00000002c0)=[{{&(0x7f00000013c0)={0xa, 0x0, 0x0, @loopback}, 0x1c, &(0x7f00000000c0)=[{&(0x7f0000000080)="d7e31d", 0x3}], 0x1}}], 0x1, 0x0)
BUG: memory leak
unreferenced object 0xffff88800e695e40 (size 8):
  comm "syz-executor.2", pid 11025, jiffies 4295354255
  hex dump (first 8 bytes):
    63 70 31 32 35 35 00 ff                          cp1255..
  backtrace (crc 6e9c88f8):
    [<0000000043109e5a>] __kmalloc_node_track_caller_noprof+0x36a/0x490
    [<000000001ed44f8f>] kstrdup+0x3e/0xc0
    [<000000000e435b4c>] isofs_parse_param+0x589/0x870
    [<00000000e397a6af>] vfs_parse_fs_param+0x208/0x3d0
    [<0000000062d9138f>] vfs_parse_fs_string+0xea/0x150
    [<00000000030cb913>] vfs_parse_monolithic_sep+0x178/0x200
    [<00000000310da9d7>] path_mount+0x136a/0x1ec0
    [<00000000a55b2517>] __x64_sys_mount+0x283/0x300
    [<0000000044cea491>] do_syscall_64+0xbf/0x1d0
    [<0000000069e22f3d>] entry_SYSCALL_64_after_hwframe+0x77/0x7f

BUG: leak checking failed