From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 13DED139E for ; Sat, 2 Aug 2025 02:18:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754101119; cv=none; b=QBzD7j2sHeV9+sx56T42WaMx2sxKfBQnDKmTMIk0PRK8BLgPu3YYIb5n4qcxwG4p+impfxFDpdArTvg42YQ0hI0OYOjhRsQoCbJgt6qM2jFOtTyn4WRRt07nf5/Swc0Xhnw7ooZWMy6+PTVS9H80h8SRc833Lp3HgA/AE52POBw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754101119; c=relaxed/simple; bh=nibfP85OrtQzeUHNPYnVq5ZQtUssf0yOK2wCjiWDsmE=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=dtkDuw5G6CYdM271wjxUMHrwUilsdPeYsPR5BA/MK2OXjtXdFSVse81gJZU3sqUj9uiYY4TRAA6MKCKxhjJ6ItNvAGp13clf8aKKOasht0dOf3QiMjhEtlL7LmtJES4oS5GN0K6YSnKUBp3Qu+RizNVoxRPdr6QuEILE9kzTCmk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=bWU7vWbi; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="bWU7vWbi" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 808E1C4CEE7; Sat, 2 Aug 2025 02:18:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1754101118; bh=nibfP85OrtQzeUHNPYnVq5ZQtUssf0yOK2wCjiWDsmE=; h=From:To:Cc:Subject:Date:From; b=bWU7vWbimIMVndFC530TTgufAznJTWo+RTd6VsHaXB5mUuDa8fFH9Ozg14b9l9QMk bOOldw1HYVehhVtm/iyEOQJt+AqgfhtnaGgq9TCWe7uOdjF+3bpDp4O49jviccgUQ0 vj0O6h4+iy5i2f5IgHGuu+aWOuTWhWxgj2Kt2jGWkB0AVL5Bq2CZsEDmIq3Ex+hjBo IdzqXTll8CW+WEXjkcNOwbch3Ko1YT2oLlVa2UD9fuSOtsddEtFAKeNNuMXiLmQScu yekkwBLGksZJCuTAwoMSUJJ+MzB+WOIHsU3HjSLyziRrCnbLGTuorlfL+lf4HAlI5Z tGxTEKGLZ3gZg== From: Chao Yu To: jaegeuk@kernel.org Cc: linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, Chao Yu Subject: [PATCH 1/3] f2fs: fix to avoid overflow while left shift operation Date: Sat, 2 Aug 2025 10:18:30 +0800 Message-ID: <20250802021832.1882302-1-chao@kernel.org> X-Mailer: git-send-email 2.50.1.565.gc32cd1483b-goog Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 --- 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 5c1f47e45dab..6cd8902849cf 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)); -- 2.49.0