2.3.51: mount bug (in fs/super.c?)

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I get a kernel bug at block_dev.c:426 (in function bdput())
if I try to mount a filesystem and there are no super blocks
left. The relevant parts of do_mount() are:

...
        sb = read_super(dev, bdev, fs_type, flags, data, 0);
        if (!sb)
                goto fsput_and_out;
...
fsput_and_out:
        put_filesystem(fs_type);
        if (bdev)
                bdput(bdev);
dput_and_out:
...

The bdput() call triggers the bug report. The 2.3.50 kernel
jumps to dput_and_out if read_super() fails...

Nick Wellnhofer

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