From: Edward Adam Davis <eadavis@qq.com>
To: syzbot+41ba9c82bce8d7101765@syzkaller.appspotmail.com
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [hfs?] KASAN: out-of-bounds Read in hfs_bnode_move
Date: Thu, 24 Jul 2025 19:46:41 +0800 [thread overview]
Message-ID: <tencent_D1B2A5C90DBB9238DDD65DF11919CFA60D07@qq.com> (raw)
In-Reply-To: <68811963.050a0220.248954.0005.GAE@google.com>
#syz test
diff --git a/fs/hfs/bfind.c b/fs/hfs/bfind.c
index ef9498a6e88a..1d6f2bbafa7a 100644
--- a/fs/hfs/bfind.c
+++ b/fs/hfs/bfind.c
@@ -133,6 +133,8 @@ int hfs_brec_find(struct hfs_find_data *fd)
goto invalid;
if (bnode->type != (--height ? HFS_NODE_INDEX : HFS_NODE_LEAF))
goto invalid;
+ if (!bnode->num_recs)
+ goto invalid;
bnode->parent = parent;
res = __hfs_brec_find(bnode, fd);
next prev parent reply other threads:[~2025-07-24 11:51 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-23 17:18 syzbot
2025-07-23 17:26 ` Viacheslav Dubeyko
2025-07-24 1:52 ` Forwarded: " syzbot
2025-07-24 9:40 ` Edward Adam Davis
2025-07-24 10:17 ` syzbot
2025-07-24 11:46 ` Edward Adam Davis [this message]
2025-07-24 15:06 ` syzbot
2025-07-24 15:08 ` [PATCH] hfs: Prevent the use of bnodes without entries Edward Adam Davis
2025-07-24 20:06 ` Viacheslav Dubeyko
2025-08-27 9:54 ` [syzbot] [hfs?] KASAN: out-of-bounds Read in hfs_bnode_move syzbot
[not found] <20250724015303.3332384-1-lizhi.xu@windriver.com>
2025-07-24 3:11 ` syzbot
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