From nobody Sun Feb 8 11:21:49 2026 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (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 B1BE5823AD; Wed, 7 Feb 2024 17:13:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707325995; cv=none; b=B34K8IBwkEspxyxKjbY2XkKX4fqxV63/fjAv3mrdFOeabPiwOcHD6v/8OruELqMyDFqadlAWJxcOysh3A6X57VCFAwxd41urVrJBQGTJllnZFZkYEPD0mt3q0u9ycjpL2C98Y9CaCIwfnST995oaaM39mXcy8fYIEf2t2VLDdGw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707325995; c=relaxed/simple; bh=BVNIe1kDhE4wJLuDeON0evrTQTP1yhyS10nZ1KpN5+U=; h=Date:From:To:Subject:Cc:In-Reply-To:References:MIME-Version: Message-ID:Content-Type; b=qknAIRA6gqtNwormYM6SBP0EROE4qd3CsoEnN7ht10LI/Xb2DmAu/p1OVevEloFCCXyg+r5FFb5CJP7N85T34YfUmpKURUKoO2MCogQtylH5PcyeD36xjIKfFvnzVUlDD7cXKT3uxUqA98MzNauYc7yMXGtk/9ULSY9g2CLGCSc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=eYg8PzWZ; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=2mdwdsVy; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="eYg8PzWZ"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="2mdwdsVy" Date: Wed, 07 Feb 2024 17:13:08 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1707325989; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=CFsgkB1zC7/VSK3pWwrvuz6GTg2EbUcNZu4MIdsRY+w=; b=eYg8PzWZqrrn4BTqvsaFzE8XsmIYBDARuAt6mbu5OX46Mdcx6kpmZs+e0NkOYuoZ7pfkty iTaoorv6xO4sHHAs6ITGnr0wsdRwVdQYG7C9XbOKMtSXNufbTBDYmeGSDxKnYOAOs47BKp Cjo/eUZvz1Lv6XNIFBMyTtYS9T6whhmBBqmhYzqFHTehHsq3i3LHYJZ27+fozUfpnCnfmb 1ee1QzQAF1FfczNyBYFD9LD5MxR0XgkG/35ST3suJ2l6RPwPEyA7/VZ2rwDuBDgRYLh5n8 DAnELXfp4FKKJxHnFjJyGMlkCF2aoxUJU2BSQeFqA3AfLEcWOL2uf/uwd4upvg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1707325989; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=CFsgkB1zC7/VSK3pWwrvuz6GTg2EbUcNZu4MIdsRY+w=; b=2mdwdsVyhaKMS9pQX9iYb03tGvt5qYpQ6EQOhNKISWkV2uKSXgsO3YmMACyA2V0oUFmUYT j8TOgb0+o1mhZbBw== From: "tip-bot2 for Ashish Kalra" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: x86/sev] iommu/amd: Fix failure return from snp_lookup_rmpentry() Cc: Dan Carpenter , Ashish Kalra , "Borislav Petkov (AMD)" , Joerg Roedel , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20240126041126.1927228-20-michael.roth@amd.com> References: <20240126041126.1927228-20-michael.roth@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <170732598872.398.2550238673926493243.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Precedence: bulk Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable The following commit has been merged into the x86/sev branch of tip: Commit-ID: 45ba5b3c0a02949a4da74ead6e11c43e9b88bdca Gitweb: https://git.kernel.org/tip/45ba5b3c0a02949a4da74ead6e11c43e9= b88bdca Author: Ashish Kalra AuthorDate: Mon, 05 Feb 2024 21:06:54=20 Committer: Borislav Petkov (AMD) CommitterDate: Wed, 07 Feb 2024 17:27:03 +01:00 iommu/amd: Fix failure return from snp_lookup_rmpentry() Commit f366a8dac1b8: ("iommu/amd: Clean up RMP entries for IOMMU pages during SN= P shutdown") leads to the following Smatch static checker warning: drivers/iommu/amd/init.c:3820 iommu_page_make_shared() error: uninitializ= ed symbol 'assigned'. Fix it. [ bp: Address the other error cases too. ] Fixes: f366a8dac1b8 ("iommu/amd: Clean up RMP entries for IOMMU pages durin= g SNP shutdown") Closes: https://lore.kernel.org/linux-iommu/1be69f6a-e7e1-45f9-9a74-b255034= 4f3fd@moroto.mountain Reported-by: Dan Carpenter Signed-off-by: Ashish Kalra Signed-off-by: Borislav Petkov (AMD) Cc: Joerg Roedel Link: https://lore.kernel.org/lkml/20240126041126.1927228-20-michael.roth@a= md.com --- drivers/iommu/amd/init.c | 25 +++++++++++++++---------- 1 file changed, 15 insertions(+), 10 deletions(-) diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c index 88bb08a..480e768 100644 --- a/drivers/iommu/amd/init.c +++ b/drivers/iommu/amd/init.c @@ -3813,23 +3813,28 @@ static int iommu_page_make_shared(void *page) bool assigned; =20 ret =3D snp_lookup_rmpentry(pfn, &assigned, &level); - if (ret) - pr_warn("IOMMU PFN %lx RMP lookup failed, ret %d\n", - pfn, ret); + if (ret) { + pr_warn("IOMMU PFN %lx RMP lookup failed, ret %d\n", pfn, ret); + return ret; + } =20 - if (!assigned) - pr_warn("IOMMU PFN %lx not assigned in RMP table\n", - pfn); + if (!assigned) { + pr_warn("IOMMU PFN %lx not assigned in RMP table\n", pfn); + return -EINVAL; + } =20 if (level > PG_LEVEL_4K) { ret =3D psmash(pfn); - if (ret) { - pr_warn("IOMMU PFN %lx had a huge RMP entry, but attempted psmash fail= ed, ret: %d, level: %d\n", - pfn, ret, level); - } + if (!ret) + goto done; + + pr_warn("PSMASH failed for IOMMU PFN %lx huge RMP entry, ret: %d, level= : %d\n", + pfn, ret, level); + return ret; } } =20 +done: return rmp_make_shared(pfn, PG_LEVEL_4K); }