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 F1B101C4A0A for ; Wed, 17 Sep 2025 00:28:26 +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=1758068907; cv=none; b=cKej1QmO7SQr5YkeWev5M0gnUg5Fj/e1g12r4u61uVZRc7HON+InOCQLvTpX4BbyilPYYhB5ruoQ4WqzBDkllXyhZL8THrueA6KR3sgaQlBSfPo9MWR/J82shxaI0p0nJdaTCdgVaaxVPyon6Yo7UZyRMKb0NqR96KJeSTtyNxU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758068907; c=relaxed/simple; bh=ckV537HOKN+hfxC+f++NTwcm9JJZ35azQb1FUInmSU4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=NFrMPLfbJX4emwRNUgIrExSC5D83VpCb5A/8bnO+STS3Kxr0dsSYg+KKRu7aBSyTBopvZn4JZ3CNJdWgtt3iR4lZ+vfPk8C5noGyqZsJ7K16PO88m1JSZgKJZ7Sbwj0IFVA00AO10IeO98DwMqEYLxF4xjzrxh3ohuBmWJm/BgU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=OZE4Xv2K; 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="OZE4Xv2K" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2D749C4CEFC; Wed, 17 Sep 2025 00:28:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1758068906; bh=ckV537HOKN+hfxC+f++NTwcm9JJZ35azQb1FUInmSU4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OZE4Xv2K9Mm1wLmeTi3zCMSxKnjHJQD41qGuwT320IVcJmrN9wsFjD0Z3r2fkWQn6 YKHoBrMx9gmAg9XQ7EQNHeiDT6dafNvn7cri9n9FR/mDKLQOrhQv9xKXjRcao3TJnn luTeTmR3aQscVFb4OK4l0wZgrblFe9/uOY7z2YjHdO7KSEckjD/Kwr22oMqwJJZN2/ yWTRvj5dhgm/EDKjaty5K6MnlTEpIxow6aXV0tiwtexskyb2q/sNuaVOg3CqJeo6FH 3cnqxtyRvQ1mp5YJFDmyTkRogZGJpKMgYskS0ya+lPUEeS5HswflwYGnJW7kPgfBqf 0R0ss2vddsnJg== From: Jakub Kicinski To: davem@davemloft.net Cc: netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com, andrew+netdev@lunn.ch, horms@kernel.org, Jakub Kicinski , Sabrina Dubroca Subject: [PATCH net 2/2] selftests: tls: test skb copy under mem pressure and OOB Date: Tue, 16 Sep 2025 17:28:14 -0700 Message-ID: <20250917002814.1743558-2-kuba@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20250917002814.1743558-1-kuba@kernel.org> References: <20250917002814.1743558-1-kuba@kernel.org> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add a test which triggers mem pressure via OOB writes. Reviewed-by: Sabrina Dubroca Signed-off-by: Jakub Kicinski --- tools/testing/selftests/net/tls.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/tools/testing/selftests/net/tls.c b/tools/testing/selftests/net/tls.c index cd67b0ae75a7..e788b84551ca 100644 --- a/tools/testing/selftests/net/tls.c +++ b/tools/testing/selftests/net/tls.c @@ -2775,6 +2775,22 @@ TEST_F(tls_err, poll_partial_rec_async) } } +/* Use OOB+large send to trigger copy mode due to memory pressure. + * OOB causes a short read. + */ +TEST_F(tls_err, oob_pressure) +{ + char buf[1<<16]; + int i; + + memrnd(buf, sizeof(buf)); + + EXPECT_EQ(send(self->fd2, buf, 5, MSG_OOB), 5); + EXPECT_EQ(send(self->fd2, buf, sizeof(buf), 0), sizeof(buf)); + for (i = 0; i < 64; i++) + EXPECT_EQ(send(self->fd2, buf, 5, MSG_OOB), 5); +} + TEST(non_established) { struct tls12_crypto_info_aes_gcm_256 tls12; struct sockaddr_in addr; -- 2.51.0