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authorGao Xiang <hsiangkao@linux.alibaba.com>2023-11-29 02:04:31 +0800
committerGao Xiang <hsiangkao@linux.alibaba.com>2023-12-15 00:22:04 +0800
commit93d6fda7f926451a0fa1121b9558d75ca47e861e (patch)
treeb27290c8b90970bbf25bba505b71ef64f67cb236 /fs/erofs
parent2cc14f52aeb78ce3f29677c2de1f06c0e91471ab (diff)
erofs: fix memory leak on short-lived bounced pages
Both MicroLZMA and DEFLATE algorithms can use short-lived pages on demand for the overlapped inplace I/O decompression. However, those short-lived pages are actually added to `be->compressed_pages`. Thus, it should be checked instead of `pcl->compressed_bvecs`. The LZ4 algorithm doesn't work like this, so it won't be impacted. Fixes: 67139e36d970 ("erofs: introduce `z_erofs_parse_in_bvecs'") Reviewed-by: Yue Hu <huyue2@coolpad.com> Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com> Link: https://lore.kernel.org/r/20231128180431.4116991-1-hsiangkao@linux.alibaba.com
Diffstat (limited to 'fs/erofs')
-rw-r--r--fs/erofs/zdata.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c
index a7e6847f6f8f..a33cd6757f98 100644
--- a/fs/erofs/zdata.c
+++ b/fs/erofs/zdata.c
@@ -1309,12 +1309,11 @@ out:
put_page(page);
} else {
for (i = 0; i < pclusterpages; ++i) {
- page = pcl->compressed_bvecs[i].page;
+ /* consider shortlived pages added when decompressing */
+ page = be->compressed_pages[i];
if (erofs_page_is_managed(sbi, page))
continue;
-
- /* recycle all individual short-lived pages */
(void)z_erofs_put_shortlivedpage(be->pagepool, page);
WRITE_ONCE(pcl->compressed_bvecs[i].page, NULL);
}