From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 BFDE91A9F97 for ; Thu, 19 Mar 2026 00:59:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773881983; cv=none; b=Aq4Gl5AAQHa80845ezZP0cvBH/jmewiksJUPgeinqZObNYq0kueHTD3aDg/1NuSRVAbG+RCona2GQ2ohCz7tMt7v82xqYm+W3kToHJoFmACTlQg+e1HP4psCwk0A2DC9JaRW+GNYijT0KOzefOa5uOhOo8Mgqv88XCvvrTCwC9g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773881983; c=relaxed/simple; bh=41jdHLLygpgvHhe08UGpcWD5Dg+PDgdY16WqYJyxuKI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=HcdUnCKmjqOQwnZi4wM1Z8bGakow0qqg+X3locDe/shg8U/7C5pGWlJD6z4Mcv+HJrGi6o54lKDs5tVpMXg2aEu/0o8iApWuW7ZWD6qotNc8DKU8zk8IO0QX2LxPvTHKe6Wzi/jT+rMyO9QqV8sKwkkeo36hVS8Y/aXGp3m/wWU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=PPdxpn2i; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="PPdxpn2i" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CEE08C19421; Thu, 19 Mar 2026 00:59:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773881983; bh=41jdHLLygpgvHhe08UGpcWD5Dg+PDgdY16WqYJyxuKI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PPdxpn2iyCtgEqWpAEVSYoApHVAhkUSZexHdIjS8OikJVa/EAUqi/CjEFoyOy8Wh7 /4OwcuNKoS6M7KM3B4ZhmF4KxCYo/jggD/sJznG7u2QLHdQNwR7mMNDZrtLGtF2BAp nSqU0GKDbo5YNiMZ43wmvS0jYC3eZNfAHDCIMtPT2UpEj8ocB4uzMJkATLeCYggw5R CjY6Ky02+or8bfXHxqfv/E2G6uHRbaEXHzQpH2BoAQOYvd8KFp92QYdDqcWMl1zhNc tb0ZdPKvc2uyWrczj+kNbxzqc60xw9gSlh9GDAfgLwSBpoui2L8DXXBGd1Jciub9Vy 8dpgSkQwTu5tQ== From: Sasha Levin To: stable@vger.kernel.org Cc: Thorsten Blum , Herbert Xu , Sasha Levin Subject: [PATCH 6.12.y] crypto: atmel-sha204a - Fix OOM ->tfm_count leak Date: Wed, 18 Mar 2026 20:59:41 -0400 Message-ID: <20260319005941.1860779-1-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <2026031700-perky-strainer-67d6@gregkh> References: <2026031700-perky-strainer-67d6@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Thorsten Blum [ Upstream commit d240b079a37e90af03fd7dfec94930eb6c83936e ] If memory allocation fails, decrement ->tfm_count to avoid blocking future reads. Cc: stable@vger.kernel.org Fixes: da001fb651b0 ("crypto: atmel-i2c - add support for SHA204A random number generator") Signed-off-by: Thorsten Blum Signed-off-by: Herbert Xu [ adapted kmalloc_obj() macro to kmalloc(sizeof()) ] Signed-off-by: Sasha Levin --- drivers/crypto/atmel-sha204a.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/atmel-sha204a.c b/drivers/crypto/atmel-sha204a.c index b9658e38cb034..63a3f5042a484 100644 --- a/drivers/crypto/atmel-sha204a.c +++ b/drivers/crypto/atmel-sha204a.c @@ -52,9 +52,10 @@ static int atmel_sha204a_rng_read_nonblocking(struct hwrng *rng, void *data, rng->priv = 0; } else { work_data = kmalloc(sizeof(*work_data), GFP_ATOMIC); - if (!work_data) + if (!work_data) { + atomic_dec(&i2c_priv->tfm_count); return -ENOMEM; - + } work_data->ctx = i2c_priv; work_data->client = i2c_priv->client; -- 2.51.0