linux-ext4 - [PATCH] ext2: don't set count in the case of failure

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20191022092720.24416-1-cgxu519@mykernel.net>
Date:   Tue, 22 Oct 2019 17:27:20 +0800
From:   Chengguang Xu <cgxu519@...ernel.net>
To:     jack@...e.com
Cc:     linux-ext4@...r.kernel.org, Chengguang Xu <cgxu519@...ernel.net>
Subject: [PATCH] ext2: don't set count in the case of failure

In the case of failure, the num is still initialized value 0
so we should not set it to *count because it will bring
unexpected side effect to the caller.

Signed-off-by: Chengguang Xu <cgxu519@...ernel.net>
---
 fs/ext2/balloc.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/fs/ext2/balloc.c b/fs/ext2/balloc.c
index 18e75adcd2f6..cc516c7b7974 100644
--- a/fs/ext2/balloc.c
+++ b/fs/ext2/balloc.c
@@ -736,7 +736,6 @@ ext2_try_to_allocate(struct super_block *sb, int group,
 	*count = num;
 	return grp_goal - num;
 fail_access:
-	*count = num;
 	return -1;
 }
 
-- 
2.20.1