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 <[email protected]> Signed-off-by: Phillip Lougher <[email protected]> --- fs/squashfs/file_direct.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/squashfs/file_direct.c b/fs/squashfs/file_direct.c index 2943b2b..62a0de6 100644 --- a/fs/squashfs/file_direct.c +++ b/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]); -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
