Browse Source

Squashfs: fix failure to unlock pages on decompress error

Direct decompression into the page cache.  If we fall back
to using an intermediate buffer (because we cannot grab all the
page cache pages) and we get a decompress fail, we forgot to
release the pages.

Reported-by: Roman Peniaev <r.peniaev@gmail.com>
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
master
Phillip Lougher 8 years ago
parent
commit
6d56540950
  1. 5
      fs/squashfs/file_direct.c

5
fs/squashfs/file_direct.c

@ -84,6 +84,9 @@ int squashfs_readpage_block(struct page *target_page, u64 block, int bsize)
*/
res = squashfs_read_cache(target_page, block, bsize, pages,
page);
if (res < 0)
goto mark_errored;
goto out;
}
@ -119,7 +122,7 @@ mark_errored:
* dealt with by the caller
*/
for (i = 0; i < pages; i++) {
if (page[i] == target_page)
if (page[i] == NULL || page[i] == target_page)
continue;
flush_dcache_page(page[i]);
SetPageError(page[i]);

Loading…
Cancel
Save