linux-ext4 - [PATCH v1] fs/ext4/xattr: check the return value of ext4_xattr_inode_dec

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 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]

Date:   Thu,  8 Sep 2022 21:47:27 -0700
From:   Li Zhong <floridsleeves@...il.com>
To:     linux-kernel@...r.kernel.org, linux-ext4@...r.kernel.org
Cc:     adilger.kernel@...ger.ca, tytso@....edu,
        Li Zhong <floridsleeves@...il.com>
Subject: [PATCH v1] fs/ext4/xattr: check the return value of ext4_xattr_inode_dec_ref()

Check the return value of ext4_xattr_inode_dec_ref(), which could return
error code and need to be warned.

Signed-off-by: Li Zhong <floridsleeves@...il.com>
---
 fs/ext4/xattr.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 533216e80fa2..76141ed12bc2 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -1540,7 +1540,9 @@ static int ext4_xattr_inode_lookup_create(handle_t *handle, struct inode *inode,
 
 	err = ext4_xattr_inode_write(handle, ea_inode, value, value_len);
 	if (err) {
-		ext4_xattr_inode_dec_ref(handle, ea_inode);
+		err = ext4_xattr_inode_dec_ref(handle, ea_inode);
+		if (err)
+			ext4_warning_inode(ea_inode, "cleanup dec ref error %d", err);
 		iput(ea_inode);
 		return err;
 	}
-- 
2.25.1