From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out203-205-221-191.mail.qq.com (out203-205-221-191.mail.qq.com [203.205.221.191]) (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 A10872C86A for ; Thu, 21 Mar 2024 09:49:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=203.205.221.191 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711014581; cv=none; b=d9AYfsoeBrF9H+5VIoxCnOh9/3/7MTvTQEIXckYm883vM3nbDLAcxGWa86wZGVjCl9hezNuO7abcgF6pJSqtippzVWCXiDJZc+elAmPXcY8xCwwnSDJeVtS7ujocwWHmdya6qoQs22IMe03YnNHjGEfDt/iX3InYYqu66MZjcqI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711014581; c=relaxed/simple; bh=Bf4NuAPDhqMrn5J24FreL4tpQ7ONfil0t3MoZPMed5Q=; h=Message-ID:From:To:Cc:Subject:Date:In-Reply-To:References: MIME-Version; b=csvHQWkP3PmVr+0WnVCnJWke+ESmjtSUbYPdZtrnbJfQ0mkrWaaJ+G5lP0Flv5AnEAHmrPX8OKg/Zg7UUjJFjZy1AlhAFlDrM5GrysQ/mLCkXlvVegJzG7yo2guSQmvGhwUR/QkhuATW2yloTfEn/Naz2AJKpEncn1Qk//LKhcI= 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=tKGF7EGI; arc=none smtp.client-ip=203.205.221.191 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="tKGF7EGI" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512; t=1711014571; bh=HEeC4ByInjM1kRju0iAR0X6ZVteQxEDiMYLCDkSSO+g=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=tKGF7EGIBrnE+lsLx9ko5dR/TwyjXnVJrI08MnXaK/0fBPSq5yt2tsJXfLL7wGUCW cV6Wo3GkUhKgHz/OxygbDESEggUz49uKVksaMyt30sUNCtlW9bhaulvHT7IzSkyfyj mK27581vJDjD4SzxyaiO7Tkq2OiJVbMhq9vMgLzI= Received: from pek-lxu-l1.wrs.com ([111.198.228.140]) by newxmesmtplogicsvrszc5-1.qq.com (NewEsmtp) with SMTP id C0FB2457; Thu, 21 Mar 2024 17:48:15 +0800 X-QQ-mid: xmsmtpt1711014495t1570eglk Message-ID: X-QQ-XMAILINFO: Mdc3TkmnJyI/VlmtfTzmjpg/xvw6jITExioCpsPAWTnxujqSYgHxHKRLAJCy4U WFRzmLBUFzvn226XTy5FGRtojjsTfEWzkuLxrFi8IZumYMJdC7vY+X9jjyE8j3LsTpe+m8089rQ8 AIb/gjGifMiQyPc7SL80LDm5PDhixUoBb0ojL5CobDsGYQXydJ9wdWHHptZeFTCENnLoESUsLaPO SaVoGmcrrlOTRrJY15KrhVRJL80mILX8MiPI+OaymAsurYKizO76VNU4i4G2bmgqwkwb6vfm7TFF lDx+dyfN2raBQyFzJ/nvrXsi9sFu1E0vVs3YQyA1BxEHIRSowb1VCbFohryrlLNn5J2QbpgowCLU mqlmspZD2tv1Ku3And9iVw5FJ+MGO+k1qHT+jFMHs9YCG1bMXeTxAjq2ep3jfK/hbm5p/bVw/0Vx qLvA2eNeEnVHnm0UYxAYslESK/hi7SS00oB9OhCpZIFvTKVCjZqcepGzIPKpHTk3+FbNu3guku+d qzdJQfUn+WFXDG2UDdG16QAEnJ2KitB61/FUNsDzRA8m7ynGlT7UDLLFJ3r1heX0PAxMd20x6Hjx CH3loMVMBkdaDB8CISEm6yX2gyrOIZjYMUjvCRcJr9CzySsXbXsvlCuB3Dn3a7iaWxRdaVwzmUZd fFUFKnuDndkiv5MCMHRhI1AMTlx9nwx5Rrz8BodRin7lcf9o5oCamIASWxdjNzYXa2ndoO9GtJwp dvVBNjqElqMM+oH6yMTE2YY3Tn07OYvMDn6/l9Eygp+gvlPEFX4LGhg6IBXLRcvy2S2DXhB1MHmT /DgwMtPyXzLmozeBRShDJBY/FZSbmqDgaM6mhHUnSRRuQprNVTs69LyLUPJA4gXHaQ4G6knhy3/K qHpsrgRoGdx+zb374EuClGdgPfAr3UESx6e8OxuRYF0fT+u+xfyjFy7cP2rrPW48JoK8lh+rgx X-QQ-XMRINFO: MSVp+SPm3vtS1Vd6Y4Mggwc= From: Edward Adam Davis To: syzbot+65f53dd6a0f7ad64c0cb@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [hfs?] KMSAN: uninit-value in hfs_find_1st_rec_by_cnid Date: Thu, 21 Mar 2024 17:48:16 +0800 X-OQ-MSGID: <20240321094815.2359097-2-eadavis@qq.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <0000000000008fd9bc061428179e@google.com> References: <0000000000008fd9bc061428179e@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_find_1st_rec_by_cnid #syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master diff --git a/fs/hfsplus/bfind.c b/fs/hfsplus/bfind.c index ca2ba8c9f82e..b939dc879dac 100644 --- a/fs/hfsplus/bfind.c +++ b/fs/hfsplus/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;