If zlib_inflateInit2 fails, the input page is never unmapped.
Add a call to kunmap when it fails.
Signed-off-by: Nick Terrell <nickrterrell@xxxxxxxxx>
---
fs/btrfs/zlib.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/fs/btrfs/zlib.c b/fs/btrfs/zlib.c
index 88d274e..30e19c9 100644
--- a/fs/btrfs/zlib.c
+++ b/fs/btrfs/zlib.c
@@ -250,6 +250,7 @@ static int zlib_decompress_biovec(struct list_head *ws, struct page **pages_in,
if (Z_OK != zlib_inflateInit2(&workspace->strm, wbits)) {
printk(KERN_WARNING "BTRFS: inflateInit failed\n");
+ kunmap(pages_in[page_in_index]);
return -EIO;
}
while (workspace->strm.total_in < srclen) {
--
2.7.4
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