BUG: memory leak
unreferenced object 0xffff8880141f55e0 (size 16):
  comm "syz-executor.6", pid 21209, jiffies 4298146286 (age 19.596s)
  hex dump (first 16 bytes):
    e0 9a a6 55 80 88 ff ff 00 e0 a0 3f 80 88 ff ff  ...U.......?....
  backtrace:
    [<00000000dbe5d9ab>] kmalloc include/linux/slab.h:552 [inline]
    [<00000000dbe5d9ab>] ext4_multi_mount_protect+0x861/0xb20 fs/ext4/mmp.c:367
    [<0000000033f8b699>] ext4_fill_super+0xa20e/0xcf20 fs/ext4/super.c:4774
    [<00000000600abaf8>] mount_bdev+0x331/0x3f0 fs/super.c:1419
    [<0000000032ea3d63>] legacy_get_tree+0x105/0x220 fs/fs_context.c:592
    [<00000000438f4d6b>] vfs_get_tree+0x8e/0x2f0 fs/super.c:1549
    [<000000007832115c>] do_new_mount fs/namespace.c:2881 [inline]
    [<000000007832115c>] path_mount+0x139a/0x2080 fs/namespace.c:3211
    [<000000009213c0dc>] do_mount fs/namespace.c:3224 [inline]
    [<000000009213c0dc>] __do_sys_mount fs/namespace.c:3432 [inline]
    [<000000009213c0dc>] __se_sys_mount fs/namespace.c:3409 [inline]
    [<000000009213c0dc>] __x64_sys_mount+0x27e/0x300 fs/namespace.c:3409
    [<000000009f803544>] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
    [<00000000c867e7fd>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff88800d3e8fc0 (size 16):
  comm "syz-executor.0", pid 21228, jiffies 4298146501 (age 19.381s)
  hex dump (first 16 bytes):
    c8 7b 0a 5a 80 88 ff ff 00 80 e4 33 80 88 ff ff  .{.Z.......3....
  backtrace:
    [<00000000dbe5d9ab>] kmalloc include/linux/slab.h:552 [inline]
    [<00000000dbe5d9ab>] ext4_multi_mount_protect+0x861/0xb20 fs/ext4/mmp.c:367
    [<0000000033f8b699>] ext4_fill_super+0xa20e/0xcf20 fs/ext4/super.c:4774
    [<00000000600abaf8>] mount_bdev+0x331/0x3f0 fs/super.c:1419
    [<0000000032ea3d63>] legacy_get_tree+0x105/0x220 fs/fs_context.c:592
    [<00000000438f4d6b>] vfs_get_tree+0x8e/0x2f0 fs/super.c:1549
    [<000000007832115c>] do_new_mount fs/namespace.c:2881 [inline]
    [<000000007832115c>] path_mount+0x139a/0x2080 fs/namespace.c:3211
    [<000000009213c0dc>] do_mount fs/namespace.c:3224 [inline]
    [<000000009213c0dc>] __do_sys_mount fs/namespace.c:3432 [inline]
    [<000000009213c0dc>] __se_sys_mount fs/namespace.c:3409 [inline]
    [<000000009213c0dc>] __x64_sys_mount+0x27e/0x300 fs/namespace.c:3409
    [<000000009f803544>] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
    [<00000000c867e7fd>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: leak checking failed