In error path of f2fs_read_multi_pages(), it should let last referrer
release decompress io context memory, otherwise, other referrer will
cause use-after-free issue.
Fixes: 4c8ff7095bef ("f2fs: support data compression")
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
page->index, for_write);
if (IS_ERR(bio)) {
ret = PTR_ERR(bio);
- bio = NULL;
dic->failed = true;
if (refcount_sub_and_test(dic->nr_cpages - i,
- &dic->ref))
+ &dic->ref)) {
f2fs_decompress_end_io(dic->rpages,
cc->cluster_size, true,
false);
- f2fs_free_dic(dic);
+ f2fs_free_dic(dic);
+ }
f2fs_put_dnode(&dn);
- *bio_ret = bio;
+ *bio_ret = NULL;
return ret;
}
}