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 B58CF2EC083; Sun, 1 Mar 2026 01:48:53 +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=1772329733; cv=none; b=aUMcPsaqZ+AXlbOmrBopn7gXkPn6ptS0kFCwZ4DetFXNlkKys+trY3npphRDE/pNApVhOoReFFgGETU8hX/1eYEqIHmfpvUvwTYGFf403UTT/+94GZULcpV1vJKtmYRCKO24AxAPLj3s9O10nAKKUUiB/n/3I7WEfvYXksrO+b8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772329733; c=relaxed/simple; bh=MLxTCJ6X7n7rXfMN6upPtsp1xNlNaRrv4XGTDOGZ8CQ=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=JOL/W+4TjQS2RNBfxuq51XjGwwqosaBCROd1Hakq1XjIJNEP4/B77iCeot+L80Ykfx49S4rW3bAOcyVOcTI2YiaPxb7C9z743E7HGVZMUbcCzoDRvXfVtRvoLg1OzrLXV2PQV1vZR5lkDcBM3fpTNeQzAvMLTZhFbU3bxI3+HcY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=sZ6CY9cu; 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="sZ6CY9cu" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EB039C19421; Sun, 1 Mar 2026 01:48:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772329733; bh=MLxTCJ6X7n7rXfMN6upPtsp1xNlNaRrv4XGTDOGZ8CQ=; h=From:To:Cc:Subject:Date:From; b=sZ6CY9cuz3xR+5wjvcSSBaPpULQ7o5Wl3Igd8ZHU0ntl7J5Yi1OMkzEY00N+O3bDz CqiUh9+QSdh3qT1DfsGT9D3H3J/6zMASgG/CJN+laPKrtg3oz2d5473pVHJiK+oEsX 969hcJjYPWdKsuG/Z7Tyz6q3HnswOLCV8udOXHKY9GH0NxWGbD1CKV2cjxUasUFAOV KQnce1A54GIBlOyRkFe/was9D6Vs3AK762Yfsw2hQ7v0nF3+kl8ePZxVkYrOWz9b6J zUG558j1iTQpV/RUcwM7Xmw0kSSuVJKsZIjCBdRTVLLg74B716a+0M18q5i60MwNoU VxDvHMYWvpkQw== From: Sasha Levin To: stable@vger.kernel.org, ilpo.jarvinen@linux.intel.com Cc: Bjorn Helgaas , Andy Shevchenko , Christian Marangi , linux-pci@vger.kernel.org Subject: FAILED: Patch "PCI: Use resource_set_range() that correctly sets ->end" failed to apply to 5.15-stable tree Date: Sat, 28 Feb 2026 20:48:51 -0500 Message-ID: <20260301014851.1713136-1-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Hint: ignore X-stable: review Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . Thanks, Sasha ------------------ original commit in Linus's tree ------------------ >From 11721c45a8266a9d0c9684153d20e37159465f96 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= Date: Mon, 8 Dec 2025 16:56:54 +0200 Subject: [PATCH] PCI: Use resource_set_range() that correctly sets ->end MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit __pci_read_base() sets resource start and end addresses when resource is larger than 4G but pci_bus_addr_t or resource_size_t are not capable of representing 64-bit PCI addresses. This creates a problematic resource that has non-zero flags but the start and end addresses do not yield to resource size of 0 but 1. Replace custom resource addresses setup with resource_set_range() that correctly sets end address as -1 which results in resource_size() returning 0. For consistency, also use resource_set_range() in the other branch that does size based resource setup. Fixes: 23b13bc76f35 ("PCI: Fail safely if we can't handle BARs larger than 4GB") Link: https://lore.kernel.org/all/20251207215359.28895-1-ansuelsmth@gmail.com/T/#m990492684913c5a158ff0e5fc90697d8ad95351b Signed-off-by: Ilpo Järvinen Signed-off-by: Bjorn Helgaas Reviewed-by: Andy Shevchenko Cc: stable@vger.kernel.org Cc: Christian Marangi Link: https://patch.msgid.link/20251208145654.5294-1-ilpo.jarvinen@linux.intel.com --- drivers/pci/probe.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 41183aed8f5d9..ad5ae05aad3c8 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -287,8 +287,7 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, if ((sizeof(pci_bus_addr_t) < 8 || sizeof(resource_size_t) < 8) && sz64 > 0x100000000ULL) { res->flags |= IORESOURCE_UNSET | IORESOURCE_DISABLED; - res->start = 0; - res->end = 0; + resource_set_range(res, 0, 0); pci_err(dev, "%s: can't handle BAR larger than 4GB (size %#010llx)\n", res_name, (unsigned long long)sz64); goto out; @@ -297,8 +296,7 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, if ((sizeof(pci_bus_addr_t) < 8) && l) { /* Above 32-bit boundary; try to reallocate */ res->flags |= IORESOURCE_UNSET; - res->start = 0; - res->end = sz64 - 1; + resource_set_range(res, 0, sz64); pci_info(dev, "%s: can't handle BAR above 4GB (bus address %#010llx)\n", res_name, (unsigned long long)l64); goto out; -- 2.51.0