From 0fe1c6bec54ea68ed8c987b3890f2296364e77bb Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Tue, 5 Aug 2025 14:29:10 +0800 Subject: [PATCH] f2fs: fix to avoid overflow while left shift operation Should cast type of folio->index from pgoff_t to loff_t to avoid overflow while left shift operation. Fixes: 3265d3db1f16 ("f2fs: support partial truncation on compressed inode") Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/compress.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c index 5c1f47e45dab4..6cd8902849cf6 100644 --- a/fs/f2fs/compress.c +++ b/fs/f2fs/compress.c @@ -1245,7 +1245,7 @@ int f2fs_truncate_partial_cluster(struct inode *inode, u64 from, bool lock) for (i = cluster_size - 1; i >= 0; i--) { struct folio *folio = page_folio(rpages[i]); - loff_t start = folio->index << PAGE_SHIFT; + loff_t start = (loff_t)folio->index << PAGE_SHIFT; if (from <= start) { folio_zero_segment(folio, 0, folio_size(folio)); -- 2.47.3