From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out162-62-57-64.mail.qq.com (out162-62-57-64.mail.qq.com [162.62.57.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2CC3523C8A4 for ; Thu, 24 Jul 2025 09:47:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=162.62.57.64 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753350441; cv=none; b=ejxxQ9wMVjO4YRa7aeHs/uHZ4QdRvpLuKwm4x85dyFnM5d4fT56CNxSZ4AxiX/rrSUeUqS3z5a+zHexhaBEUFdX9+0yzspxQYAIvO4AQDHFH08L0NP9w9puLNM+mLneKNtpl4UELI/+IO22Ah9kkic/AL+3FqJ9495GVoaRjtrk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753350441; c=relaxed/simple; bh=bQf6hjht4zeUtI5sUMuPEbI+zFKOq0bHzvFparNqgFU=; h=Message-ID:From:To:Cc:Subject:Date:In-Reply-To:References: MIME-Version; b=IadScERQoiC7Y3+djqx+yD+fe3m9XSarNFDviaxjI1uG4V47dxdRE0qzaaSy13GKBqHrILtsslvwXFB1DG+oEBEgfFbWhLDg3sDsjfJUDTRfdPkN3Qz00QIkNRlXray/JQuDHoKDLxQb76a+GmxlHXmNZYd+l9F4KRGabMMX50c= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com; spf=pass smtp.mailfrom=qq.com; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b=Rq4LW8Z5; arc=none smtp.client-ip=162.62.57.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=qq.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b="Rq4LW8Z5" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512; t=1753350427; bh=oPFz/oq0nb8y00xssg8hSYvjF9CeFkWsQfge10Zo7f0=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Rq4LW8Z5viNOl3E2eKQw32DoWBIHZmnghTo184d5W+XdQ7mkI9GT0rVooJBjL8J+I PApTBRPaMnxaE+snvbcaQ2O64orf5ATbp5urv3OnaCi2I9RjyNOdUqsIvCaBJgvnWv B2eKVtCuLM9HVTdMdqFe8SlT2L0ZX/4e5LVLnkao= Received: from pek-lxu-l1.corp.ad.wrs.com ([111.198.231.14]) by newxmesmtplogicsvrsza29-0.qq.com (NewEsmtp) with SMTP id A3883E56; Thu, 24 Jul 2025 17:40:56 +0800 X-QQ-mid: xmsmtpt1753350056tms0y5l84 Message-ID: X-QQ-XMAILINFO: OOyEews/EdUgCLC/x5/jQeMyQcEDdMCL1yOUsROp9pkDwPQCkR73SDo+N0PoLb 6BEIAI+tTyVOxrDtRlkL+rdqW4gyrGDJqT/pkGT+sgTBOAXZAOkGHTzfjl8jKHpDBmqywd6s0+vi jmvAM0QBr5N3LiX7il6azS0ukmlNq1C/ZD/VdWEqAQWQrPyCj/mcehqEBM6OmaJq7U5TXfkox8nD nKIZmaWwIVqXz8pSp7n0HmzQJWoPU0Jnm/VhVdFeeSi8Tg4xZabmhQoTmzqKinxWVjx1c9lhkjfu kBIfREMt45T2tuo7aqORosssbEWN1xmQVhtTOQK1EoD3QWq+qyOHjPk+mlmnKK6uQfrXU7jkPIPp 6yWoTnw2JN2TGZfT2/FopQFgicChjvKWM07AbH7Lo5KcTMG4sfShMMJbfpeGhkYWlYuMUx4GL9kp gSf1w2YYp6ehNv/a1AOk1YnKZn4XrMgE2BJe2EOM2IqoUBWGL7tw4BCUgq9/6aCdVCoN/Cq9K7wv 8zDfRotT6GLe+YF54f7pk9xvBAWK7FjC/hLepm+KfA3pJ+YyhS8q7VcT17czm2KwqCOZG/14rjNY oCZNdmWeFQw0WQnzpo/F1hZBDBUdXvlp7aZOseQruAQQtEInytPp1TkOulrCqSaqjQkvQo3unJQp DQBbPcbyTT1r4cXIdmpu6azCk1iPuo/F1eg8KH3MB6YfNbx0n5IPcpNbtx5bEGCR1s+uzAY4SbMQ UWxDEMDuNVqEJ38j+UEpzeTpvV4B0SxZIMRshVq0fEMbwgO7IHXKOVlN3+gG5PufMxG2CkONoB7W slUu8v9r7sHQYpUFpWnPPdPAiXHLUKcdYoH7938xwI3BYXG++rLeVgWhZmpDin1aqUbRFYz2nd7H oApOEg+N+JsDyuWgXhVR2aAzFmC4iHxI90Q7majqULAJ12kRpcy/7WE+DhpyTMBnGcIp+8b6ghVR 4xNcg5qvCTUZQMtZyFotDTpc1tpcO/ X-QQ-XMRINFO: Mp0Kj//9VHAxr69bL5MkOOs= From: Edward Adam Davis 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 17:40:57 +0800 X-OQ-MSGID: <20250724094056.463928-2-eadavis@qq.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <68811963.050a0220.248954.0005.GAE@google.com> References: <68811963.050a0220.248954.0005.GAE@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit #syz test diff --git a/fs/hfs/brec.c b/fs/hfs/brec.c index 896396554bcc..763b6209a198 100644 --- a/fs/hfs/brec.c +++ b/fs/hfs/brec.c @@ -208,7 +208,7 @@ int hfs_brec_remove(struct hfs_find_data *fd) } hfs_bnode_write_u16(node, offsetof(struct hfs_bnode_desc, num_recs), node->num_recs); - if (rec_off == end_off) + if (rec_off <= end_off) goto skip; size = fd->keylength + fd->entrylength;