From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out162-62-58-211.mail.qq.com (out162-62-58-211.mail.qq.com [162.62.58.211]) (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 911A0221540 for ; Sat, 9 Aug 2025 07:25:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=162.62.58.211 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754724310; cv=none; b=W/QFWJPt2pFmhJyPCdjpYppqOvgmj2QhVIrcTQ4C1Gp3QU6A/DXAfDum9Yb10FVGeGcR2Jw2FoMwhc2d6/ss19s8He05XPwdXO+CsMvEwuRLWm4iBJ2ZQgf0ekHTdU+qX7fPg51B+DcGozLj8jOV8eVi9mU1TdzWyYZCMSatfOY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754724310; c=relaxed/simple; bh=HOmJX4ji3giEVlfFpEkxPSZFM4plg+An5rtW6LDYiEY=; h=Message-ID:From:To:Cc:Subject:Date:In-Reply-To:References: MIME-Version; b=ChSI5e6QrqoqwapE/3UzMknbBRLRbJyMVYz4aIYK8FHJbiTNsRU8BKSGOHo51Khu4xmTSDEMB8up0TzrJuRUX/IuHRUibhmc2i0mNPt3cQkExmaiUtVqYZP17eOU/9JY168LMolLVNcepNH/KAbfed0vyBWlDPyv0m0Nx3VZmpc= 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=LrP0P6Vv; arc=none smtp.client-ip=162.62.58.211 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="LrP0P6Vv" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512; t=1754723994; bh=bGrgxIatoWkoS6oLLAJ0J+/7z2z/7Te1k4YRKsz/Vzg=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=LrP0P6Vvbi9u7A9t0zvACORt5lkSfrR2mwCnEd9YgAMvG9PCPuluMfePF8GrcvudS bO++jDXnBcF7Q0lzt2qGUfVGunu1NgKbr82ziLwrt3l3Agt23ZrG+R/gvLoximO3vU z9MBubh+Twttt55KOPurQKWBwBEzyX8TTMlgeAn0= Received: from pek-lxu-l1.corp.ad.wrs.com ([111.198.231.14]) by newxmesmtplogicsvrszc13-1.qq.com (NewEsmtp) with SMTP id 4F435A8C; Sat, 09 Aug 2025 15:19:52 +0800 X-QQ-mid: xmsmtpt1754723992tops742bz Message-ID: X-QQ-XMAILINFO: N13olRN0jpmHSBXxkEd9alNquZCLeQXz7ITwOEWmGBLtrabk1Ro1HZ/JlI+aFl ANBZ3aMqCybBCBGwmZ5ucev9a4Gcsf6A3GUQ6rCbjHeeNW/w7utW7vgnJ9fw3mUMr7Ngr6Vr+jZQ W3TX+ZTaVOOqtFLcJqfrgaa8HqtJJa3eK/3I67T+gnpnDseQMqNFEqzvhRV7cx6a5TwIr4XzjIyE nnyYBnCkoFgv6YPM9oQ86q5Xe0JROCJBMkvGejhT+M2n/x1egDRocccitXMyEw5PgilSAz6a8gEF rAsT6QeDnZcby5T2LZr3nPD5HSFQnAJzMhJqhuvtT3+nFahNaRybIBlDvtmGUnfzet9sKa5BeK4C FCbNqNcVzMO+qMcMTQA+QHEG1BySH1erzJKRN28XBMe135X9uvmyTEFiE7gL5wbhF5hRlt9mCqY2 Tek7wRl+h6CVOoo5o2tumHc5CK3H9MWLWsj2IfaaSOTZZYeRWA/iG+E6oPFtyYdsMJdlZIkcFYzT V7lkEOryTl7QNsWKVvQZclSZGtY14Cn1Al9MOJ8j6YRUa+Jqp4gT7kbJHJJnFnaLc9ppEdpOOovA AqiP3eSFbxllbrPN+U+64C3RQasi1/gbkNHZN2C3MBH4zAk6+mH4DPAXjel6UQWq+yVm5vK6GSCy jtkOoRx0U7jRhyO4Q+++nK2IogZGQ3cwrD9QS/psVe9pvD/iGM0LhuDXvYgMj14HQZ3Eb2BNmaTe Q1RxTJXQ06V+GAr6chNLBhVTFJUvubDwCO5bwUH0ZzIkr4WKtIUBI0Q6qaLK1A54EUAWQJ7sNN6x nQ1efX4WG2y4CvhPBWEceMlg892h5Ica1NQqqQuWbifzHNhzNNNw/CYUSDyqgg36AvXNdfTU5BRD PYZCuIRNUutFrmiTLJosKfyjsrYkfeehewRaG6ROGqFvyX/2NfW9736E24d3yVjlkztW3uBVdu X-QQ-XMRINFO: OD9hHCdaPRBwq3WW+NvGbIU= From: Edward Adam Davis To: syzbot+e8bcd7ee3db6cb5cb875@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [crypto?] KMSAN: kernel-infoleak in rng_recvmsg Date: Sat, 9 Aug 2025 15:19:45 +0800 X-OQ-MSGID: <20250809071944.173583-2-eadavis@qq.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <6895b041.050a0220.7f033.0058.GAE@google.com> References: <6895b041.050a0220.7f033.0058.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/crypto/jitterentropy-kcapi.c b/crypto/jitterentropy-kcapi.c index c24d4ff2b4a8..9e9e069f55af 100644 --- a/crypto/jitterentropy-kcapi.c +++ b/crypto/jitterentropy-kcapi.c @@ -107,7 +107,7 @@ int jent_hash_time(void *hash_state, __u64 time, u8 *addtl, { struct shash_desc *hash_state_desc = (struct shash_desc *)hash_state; SHASH_DESC_ON_STACK(desc, hash_state_desc->tfm); - u8 intermediary[SHA3_256_DIGEST_SIZE]; + u8 intermediary[SHA3_256_DIGEST_SIZE] = { 0 }; __u64 j = 0; int ret;