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authorKevin Wolf <kwolf@redhat.com>2014-03-26 13:05:47 +0100
committerStefan Hajnoczi <stefanha@redhat.com>2014-04-01 14:19:09 +0200
commit6d33e8e7dc9d40ea105feed4b39caa3e641569e8 (patch)
treedc0f7b63b5d42aa84af6f51dffe16c4193594c59 /qemu-options.hx
parent2d51c32c4b511db8bb9e58208f1e2c25e4c06c85 (diff)
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qcow2: Fix backing file name length check
len could become negative and would pass the check then. Nothing bad happened because bdrv_pread() happens to return an error for negative length values, but make variables for sizes unsigned anyway. This patch also changes the behaviour to error out on invalid lengths instead of silently truncating it to 1023. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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