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From: Edward Adam Davis <eadavis@qq.com>
To: syzbot+4c22f022eb39c86b9d19@syzkaller.appspotmail.com
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] KASAN: slab-use-after-free Read in ntfs_show_options
Date: Sun,  9 Aug 2026 10:56:44 +0800	[thread overview]
Message-ID: <tencent_2FCF9F8D9425910DF3121BDDB3DDA7994407@qq.com> (raw)
In-Reply-To: <6a778cc0.01d0871a.3a0d52.006c.GAE@google.com>

#syz test: upstream master

diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c
index 3305fe406cb2..58540491e68b 100644
--- a/fs/ntfs3/super.c
+++ b/fs/ntfs3/super.c
@@ -461,7 +461,7 @@ static int ntfs_fs_reconfigure(struct fs_context *fc)
 	}
 
 	sync_filesystem(sb);
-	swap(sbi->options, fc->fs_private);
+	memcpy(sbi->options, fc->fs_private, sizeof(*sbi->options));
 
 	return 0;
 }


  reply	other threads:[~2026-08-09  2:56 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-08 20:08 [syzbot] KASAN: slab-use-after-free Read in ntfs_show_options syzbot
2026-08-09  2:56 ` Edward Adam Davis [this message]
2026-08-09  6:02   ` syzbot
2026-08-09  6:07 ` [PATCH] ntfs3: Update only the member values without replacing the opts pointer Edward Adam Davis

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