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78.37.41.175:7.4.1,7.7.3; 127.0.0.199:7.1.2; omp.ru:7.1.1 X-KSE-AntiSpam-Info: {cloud_iprep_silent} X-KSE-AntiSpam-Info: ApMailHostAddress: 78.37.41.175 X-KSE-AntiSpam-Info: {DNS response errors} X-KSE-AntiSpam-Info: Rate: 59 X-KSE-AntiSpam-Info: Status: not_detected X-KSE-AntiSpam-Info: Method: none X-KSE-AntiSpam-Info: Auth:dmarc=temperror header.from=omp.ru;spf=temperror smtp.mailfrom=omp.ru;dkim=none X-KSE-Antiphishing-Info: Clean X-KSE-Antiphishing-ScanningType: Heuristic X-KSE-Antiphishing-Method: None X-KSE-Antiphishing-Bases: 03/05/2024 07:45:00 X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: Clean, bases: 3/5/2024 3:38:00 AM X-KSE-Attachment-Filter-Triggered-Rules: Clean X-KSE-Attachment-Filter-Triggered-Filters: Clean X-KSE-BulkMessagesFiltering-Scan-Result: InTheLimit X-Headers-End: 1rhQ6v-0000F9-IK Subject: [f2fs-dev] [PATCH] f2fs: Cast expression type to unsigned long in __count_extent_cache() X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sergey Shtylyov , lvc-project@linuxtesting.org, linux-kernel@vger.kernel.org, Karina Yankevich , linux-f2fs-devel@lists.sourceforge.net, Roman Smirnov Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net 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 Reviewed-by: Sergey Shtylyov Reviewed-by: Chao Yu --- 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); }