Theodore Ts'o 4cd96b4772 ext4: avoid clearing beyond i_blocks when truncating an inline data file ...

commit 09c455aaa8 upstream.

A missing cast means that when we are truncating a file which is less
than 60 bytes, we don't clear the correct area of memory, and in fact
we can end up truncating the next inode in the inode table, or worse
yet, some other kernel data structure.

Addresses-Coverity-Id: #751987

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2014-02-06 11:34:05 -08:00

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