linux-kernel - Re: [syzbot] [ext4?] KASAN: out-of-bounds Read in ext4_xattr_set

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Message-ID: <Zvzo1RC8scv-muur@fedora>
Date: Wed, 2 Oct 2024 14:31:49 +0800
From: Qianqiang Liu <qianqiang.liu@....com>
To: syzbot <syzbot+f792df426ff0f5ceb8d1@...kaller.appspotmail.com>
Cc: ojaswin@...ux.ibm.com, adilger.kernel@...ger.ca, tytso@....edu,
	linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [ext4?] KASAN: out-of-bounds Read in
 ext4_xattr_set_entry

#syz test

diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index e0e1956dcdd3..649b278d4c1f 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -1884,7 +1884,7 @@ ext4_xattr_block_find(struct inode *inode, struct ext4_xattr_info *i,
 		bs->s.here = bs->s.first;
 		error = xattr_find_entry(inode, &bs->s.here, bs->s.end,
 					 i->name_index, i->name, 1);
-		if (error && error != -ENODATA)
+		if (error)
 			return error;
 		bs->s.not_found = error;
 	}

-- 
Best,
Qianqiang Liu