{"id":2222227,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2222227/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pci/patch/20260410230300.135631-2-carlos.bilbao@kernel.org/","project":{"id":28,"url":"http://patchwork.ozlabs.org/api/1.2/projects/28/?format=json","name":"Linux PCI development","link_name":"linux-pci","list_id":"linux-pci.vger.kernel.org","list_email":"linux-pci@vger.kernel.org","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260410230300.135631-2-carlos.bilbao@kernel.org>","list_archive_url":null,"date":"2026-04-10T23:02:59","name":"[v2,1/2] misc: pci_endpoint_test: validate BAR index in doorbell test","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"f13e39252d9d60950a23e4e38f175f96ad421ef5","submitter":{"id":93050,"url":"http://patchwork.ozlabs.org/api/1.2/people/93050/?format=json","name":"Carlos Bilbao (Lambda)","email":"carlos.bilbao@kernel.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-pci/patch/20260410230300.135631-2-carlos.bilbao@kernel.org/mbox/","series":[{"id":499514,"url":"http://patchwork.ozlabs.org/api/1.2/series/499514/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pci/list/?series=499514","date":"2026-04-10T23:02:59","name":"misc: pci_endpoint_test: doorbell BAR validation fixes","version":2,"mbox":"http://patchwork.ozlabs.org/series/499514/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2222227/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2222227/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-pci@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=hXY8oKHl;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=172.232.135.74; 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a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1775862187; cv=none;\n b=U1SCTDhB00H0Siyie0M8Pu2roRr5RwiMPAeZ/lCsXm9e8li665ZBNJDkwHsNbGDdMjlIfJluZmG/hPcoVmPe4oyJ56tYrI6yVFpOnRzAlPlWyDFOwgMtwleliMtaoATBfoztT25CzBsYZ2bUYogi0vkqsTUGvc8GHogxecTiHkw=","ARC-Message-Signature":"i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1775862187; c=relaxed/simple;\n\tbh=RJbHTACYPsKias2m26X60C9BBBMflClnp6hW86zoAqM=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version;\n b=tWGLfJh/tuQ+w3dLFYyQF4tKU/nFOoJpjBPJKYwcMUYXSvaAj51/xODlAI8RUvdf2JHyHvoP8Nma4K/0sIEvy98HsCNPWQjt/BgVGbkStjZkshvzioKKBYKVaoZeb7XdwbEaVCj8hBbNvbKIzBQpve1Qsqk4Y0DkPMW2hIPAhyM=","ARC-Authentication-Results":"i=1; smtp.subspace.kernel.org;\n dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=hXY8oKHl; arc=none smtp.client-ip=10.30.226.201","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1775862186;\n\tbh=RJbHTACYPsKias2m26X60C9BBBMflClnp6hW86zoAqM=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=hXY8oKHl4vSwLdY/zGXq3J8T4QwqzBbzvw7Bmgce0Xis94PGGUMm1yhhVaJX/Yzfy\n\t d5ujayv1Jaj4vfL/IvxUBb5eLoEODftvfopZbdZNNtBbrZWlj76BPQy013sF4I4Lj8\n\t dixjTjDCM3Ftx1RCwENUmtVMOkDUk4EMZ/a0w26S2z7MqejWmP91WyUQH8miHbzCCO\n\t 0hzPYG7aKnt78h9nXLlQJbLi1ktNw3rlluiK+dH5cVs9Gx8IXAGh5KOTZpBWxhczYy\n\t sVEQ8PgC+P30NLL3iung2tz4n/RJl8HCfK87zg5hUhYSnUyRpNhH/rviTEAj+PZ2qi\n\t RSBIyQKD8wE2w==","From":"\"Carlos Bilbao (Lambda)\" ","To":"mani@kernel.org,\n\tkwilczynski@kernel.org,\n\tkishon@kernel.org,\n\tden@valinux.co.jp","Cc":"arnd@arndb.de,\n\tgregkh@linuxfoundation.org,\n\tlinux-pci@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org,\n\tbilbao@vt.edu,\n\tCarlos Bilbao ","Subject":"[PATCH v2 1/2] misc: pci_endpoint_test: validate BAR index in\n doorbell test","Date":"Fri, 10 Apr 2026 16:02:59 -0700","Message-ID":"<20260410230300.135631-2-carlos.bilbao@kernel.org>","X-Mailer":"git-send-email 2.43.0","In-Reply-To":"<20260410230300.135631-1-carlos.bilbao@kernel.org>","References":"<20260410230300.135631-1-carlos.bilbao@kernel.org>","Precedence":"bulk","X-Mailing-List":"linux-pci@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit"},"content":"From: Carlos Bilbao \n\npci_endpoint_test_doorbell() reads the BAR number directly from an endpoint\ntest register and uses it as an index into test->bar[]. Add a defensive\nbounds check before the dereference: positive values >= PCI_STD_NUM_BARS\nare out of range, and NO_BAR (-1) as a negative signed value would slip\npast an upper-bound-only check.\n\nSigned-off-by: Carlos Bilbao (Lambda) \n---\n drivers/misc/pci_endpoint_test.c | 5 +++++\n 1 file changed, 5 insertions(+)","diff":"diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c\nindex 74ab5b5b9011..0d0b430de0e8 100644\n--- a/drivers/misc/pci_endpoint_test.c\n+++ b/drivers/misc/pci_endpoint_test.c\n@@ -1089,6 +1089,11 @@ static int pci_endpoint_test_doorbell(struct pci_endpoint_test *test)\n \tpci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_STATUS, 0);\n \n \tbar = pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_DB_BAR);\n+\tif (bar < BAR_0 || bar >= PCI_STD_NUM_BARS) {\n+\t\tdev_err(dev, \"BAR %d reported by endpoint out of range [0, %u]\\n\",\n+\t\t\tbar, PCI_STD_NUM_BARS - 1);\n+\t\treturn -EINVAL;\n+\t}\n \n \twritel(data, test->bar[bar] + addr);\n \n","prefixes":["v2","1/2"]}