On 2024/3/5 16:09, Roman Smirnov wrote:
Cast expression type to unsigned long in __count_extent_cache()
to prevent integer overflow.
Found by Linux Verification Center (linuxtesting.org) with Svace.
Signed-off-by: Roman Smirnov <r.smir...@omp.ru>
Reviewed-by: Sergey Shtylyov <s.shtyl...@omp.ru>
Reviewed-by: Chao Yu <c...@kernel.org>
Thanks,
---
fs/f2fs/shrinker.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/f2fs/shrinker.c b/fs/f2fs/shrinker.c
index 83d6fb97dcae..bb86a06c5d5e 100644
--- a/fs/f2fs/shrinker.c
+++ b/fs/f2fs/shrinker.c
@@ -33,7 +33,7 @@ static unsigned long __count_extent_cache(struct f2fs_sb_info
*sbi,
{
struct extent_tree_info *eti = &sbi->extent_tree[type];
- return atomic_read(&eti->total_zombie_tree) +
+ return (unsigned long)atomic_read(&eti->total_zombie_tree) +
atomic_read(&eti->total_ext_node);
}
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