From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out162-62-57-49.mail.qq.com (out162-62-57-49.mail.qq.com [162.62.57.49]) (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 44A787F for ; Sun, 3 Mar 2024 03:14:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=162.62.57.49 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709435663; cv=none; b=HLK0sMAXZtIdfl/yuELgx4/JgCONmK3ma5Vck3LXQMRtqseYu4lujwpFt3Bxvzvxoco7qlLDGxL7wf+vvC7DbSat+bCOvspNVxyUb3Ak4HbANA1+3sbSkaEk+VNoJuS9jHOGXZ8URE4vfwmofWwxUaXiLfOjTTQvacfliYo0vf4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709435663; c=relaxed/simple; bh=5OCH4ubpafnoDYSK1m9V4em9FxgzMYJjrO1TpLlSxS4=; h=Message-ID:From:To:Cc:Subject:Date:In-Reply-To:References: MIME-Version; b=ZQsRrSbtVJeXS+qzUuQmkb7/a8yxyqfMxVOr2+rO1HSd/HrXRgHdLfbDQi8v6LRD2eFMs2oVWgsG6aTf8Vb/Yyw9T/aIzWOzc/I+gGYPFKWZbQftz2weS36/3zeXGGphekQT4ouuG/1Qn/n7XKzAj/vxS9vdG1sVNRI0oIDp/N4= 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=C8UF+y9x; arc=none smtp.client-ip=162.62.57.49 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="C8UF+y9x" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512; t=1709435351; bh=v3WpzfiMBJXywrT2erFA2ns2yDgHUiWRul3btSHpFJ0=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=C8UF+y9xFH8wmeXc9Ki2hzIEYByIK0j2CJL0JQTyH4uKs7yjKFALQMxRvUAEIwh+f /cLodqG7cu79k9oBSJ8hlA8EpKvb0f14Xe/g6WEBOtEeM5LVrQo5k6mnXCDiXb+QEx pqlZ6IIgTOiKy40dzJuZxbsYtY+IASDDwuydSWuY= Received: from pek-lxu-l1.wrs.com ([111.198.228.140]) by newxmesmtplogicsvrszc5-1.qq.com (NewEsmtp) with SMTP id 249A4A0D; Sun, 03 Mar 2024 11:09:09 +0800 X-QQ-mid: xmsmtpt1709435349t4qjp5ka6 Message-ID: X-QQ-XMAILINFO: NojR6Ao/DkEDVDit6y81s9TWIncZk1a8zeWyLZjjfhzjFG9K8fpSUnX3uBhXWB 3AYB8wuFAy6KxP9JsS0YBqdH/IuI6ClMCsUeN5gwPDlFzI+XUC8S92TkFfL9CDR8KMvd97BTg1Ja xQ1ftGERyst92+xi9LBv91GpXaIwDSSbHMOU5WE+Rrtjyg9TZ1UYfAJdyMmsdgz9dYwRf/Nthd1/ jeK3Bzu26G6hqVmdcegiOaDtPAbRlBIZj0SNQqGSj5bv7FLc5gW8iq7UBLUhCfBNLOXD1pEoGrJC agw0wjSWef5enjDHK2hvnoGhPrTvdzXqi7S78M429E8j/PMDrLgzZgCQRdGwNQ9cTlhXbhvOh7Pp IEwg14QTuLizM/qGrrUR8Psv9nSEgDh0SA+YiMNYDgRreURTP80dmVLmJXl5oxqpET5yEjOX/jT/ 5YDiS4p+uq2rkL8hntJJpme2+ajdnuHkeO8kGXZ7ICX3VX4hr2d7o0bS10Pg6SYQOcxWUDin87MO FPTeyJVwT0XCciJ6HdEx7tXeHWorV4+KMrxUXMv63P42xKmMEWTpyIP4tSKs3k2uXeST4CSASmwa 9U4cqhe20Ea1Z4F6/7Hq/Da7tEUH7iCF8veH6S8AKXGZgC/Cru4G/8Uo8rpljh09/n5LUMG/nM7o U15FUHbCCL7N/uWWdZF/eZ9F4WWf/45haPvissOoql3Gq2NlJP+GhE4fviyp7wO7KSWf+jHnk+xr iNgVN2vli4knbpbHnqVAjOK5zsMyzwPC5gf/wApWAjinK3LFGf3GKLhgFGUp+yDhFMy2A9b9aUuX y+NhOWG/UFmm7qchyC9Vp8bQ208qehNt44xxjPS40WFr2iiEQsT0LAYLINF8qOCKgPRoCuzqSQ1c pZbzcRSZ/a74n/uCCypTaicgXf8G6k8/D9/TGswfKYhLJcMonK4JVzax3F+VmGr8nQJq8MgYKcXs dA9VgHXH80fpDUgVk95AITPnQc3/ISLd91NvfnF9c= X-QQ-XMRINFO: Nq+8W0+stu50PRdwbJxPCL0= From: Edward Adam Davis To: syzbot+04486d87f6240a004c85@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [hfs?] KMSAN: uninit-value in hfs_cat_keycmp (2) Date: Sun, 3 Mar 2024 11:09:10 +0800 X-OQ-MSGID: <20240303030909.4147285-2-eadavis@qq.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <00000000000098b3700612b5ee0f@google.com> References: <00000000000098b3700612b5ee0f@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 please test uninit-value in hfs_cat_keycmp #syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master diff --git a/fs/hfs/bfind.c b/fs/hfs/bfind.c index ef9498a6e88a..c74d864bc29e 100644 --- a/fs/hfs/bfind.c +++ b/fs/hfs/bfind.c @@ -18,7 +18,7 @@ int hfs_find_init(struct hfs_btree *tree, struct hfs_find_data *fd) fd->tree = tree; fd->bnode = NULL; - ptr = kmalloc(tree->max_key_len * 2 + 4, GFP_KERNEL); + ptr = kzalloc(tree->max_key_len * 2 + 4, GFP_KERNEL); if (!ptr) return -ENOMEM; fd->search_key = ptr;