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From: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>
To: linux-pci@vger.kernel.org, Bjorn Helgaas <bhelgaas@google.com>,
	Dominik Brodowski <linux@dominikbrodowski.net>,
	linux-kernel@vger.kernel.org
Cc: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>
Subject: [PATCH 19/23] PCI: Use scnprintf() instead of sprintf()
Date: Fri, 19 Dec 2025 19:40:32 +0200	[thread overview]
Message-ID: <20251219174036.16738-20-ilpo.jarvinen@linux.intel.com> (raw)
In-Reply-To: <20251219174036.16738-1-ilpo.jarvinen@linux.intel.com>

Using sprintf() is deprecated as it does not do proper size checks.
While the code in pci_scan_bridge_extend() is safe wrt. overwriting the
destination buffer, use scnprintf() to not promote use of a deprecated
sprint() (and allow eventually removing it from the kernel).

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
 drivers/pci/probe.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 41183aed8f5d..5d8ce6381dff 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -14,6 +14,7 @@
 #include <linux/platform_device.h>
 #include <linux/pci_hotplug.h>
 #include <linux/slab.h>
+#include <linux/sprintf.h>
 #include <linux/module.h>
 #include <linux/cpumask.h>
 #include <linux/aer.h>
@@ -1573,9 +1574,9 @@ static int pci_scan_bridge_extend(struct pci_bus *bus, struct pci_dev *dev,
 		pci_write_config_byte(dev, PCI_SUBORDINATE_BUS, max);
 	}
 
-	sprintf(child->name,
-		(is_cardbus ? "PCI CardBus %04x:%02x" : "PCI Bus %04x:%02x"),
-		pci_domain_nr(bus), child->number);
+	scnprintf(child->name, sizeof(child->name),
+		  (is_cardbus ? "PCI CardBus %04x:%02x" : "PCI Bus %04x:%02x"),
+		  pci_domain_nr(bus), child->number);
 
 	/* Check that all devices are accessible */
 	while (bus->parent) {
-- 
2.39.5


  parent reply	other threads:[~2025-12-19 17:43 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-12-19 17:40 [PATCH 00/23] PCI: Resource code fixes (supercedes earlier series) & cleanups Ilpo Järvinen
2025-12-19 17:40 ` [PATCH 01/23] PCI: Fix bridge window alignment with optional resources Ilpo Järvinen
2025-12-19 17:40 ` [PATCH 02/23] PCI: Rewrite bridge window head alignment function Ilpo Järvinen
2026-01-26 22:17   ` Bjorn Helgaas
2026-01-27 11:22     ` Ilpo Järvinen
2026-01-27 22:39       ` Bjorn Helgaas
2025-12-19 17:40 ` [PATCH 03/23] PCI: Stop over-estimating bridge window size Ilpo Järvinen
2026-03-05 15:13   ` Guenter Roeck
2026-03-05 16:28     ` Ilpo Järvinen
2025-12-19 17:40 ` [PATCH 04/23] resource: Increase MAX_IORES_LEVEL to 8 Ilpo Järvinen
2025-12-19 17:40 ` [PATCH 05/23] PCI: Remove old_size limit from bridge window sizing Ilpo Järvinen
2026-01-26 17:16   ` Bjorn Helgaas
2026-01-26 20:09     ` Bjorn Helgaas
2026-01-27 11:39       ` Ilpo Järvinen
2026-01-27 22:42         ` Bjorn Helgaas
2026-01-27 10:16     ` Ilpo Järvinen
2025-12-19 17:40 ` [PATCH 06/23] PCI: Push realloc check into pbus_size_mem() Ilpo Järvinen
2025-12-19 17:40 ` [PATCH 07/23] PCI: Pass bridge window resource to pbus_size_mem() Ilpo Järvinen
2025-12-19 17:40 ` [PATCH 08/23] PCI: Use res_to_dev_res() in reassign_resources_sorted() Ilpo Järvinen
2025-12-19 17:40 ` [PATCH 09/23] PCI: Fetch dev_res to local var in __assign_resources_sorted() Ilpo Järvinen
2025-12-19 17:40 ` [PATCH 10/23] PCI: Add pci_resource_is_bridge_win() Ilpo Järvinen
2025-12-19 17:40 ` [PATCH 11/23] PCI: Log reset and restore of resources Ilpo Järvinen
2025-12-19 17:40 ` [PATCH 12/23] PCI: Check invalid align earlier in pbus_size_mem() Ilpo Järvinen
2025-12-19 17:40 ` [PATCH 13/23] PCI: Add pbus_mem_size_optional() to handle optional sizes Ilpo Järvinen
2025-12-19 17:40 ` [PATCH 14/23] resource: Mark res given to resource_assigned() as const Ilpo Järvinen
2025-12-19 17:47   ` Ilpo Järvinen
2025-12-19 17:40 ` [PATCH 15/23] PCI: Use resource_assigned() in setup-bus.c algorithm Ilpo Järvinen
2025-12-19 17:40 ` [PATCH 16/23] PCI: Properly prefix struct pci_dev_resource handling functions Ilpo Järvinen
2025-12-19 17:40 ` [PATCH 17/23] PCI: Separate cardbus setup & build it only with CONFIG_CARDBUS Ilpo Järvinen
2025-12-19 17:40 ` [PATCH 18/23] PCI: Handle CardBus specific params in setup-cardbus.c Ilpo Järvinen
2025-12-19 17:40 ` Ilpo Järvinen [this message]
2025-12-19 17:40 ` [PATCH 20/23] PCI: Add Bus Number + Secondary Latency Timer as dword fields Ilpo Järvinen
2025-12-19 17:40 ` [PATCH 21/23] PCI: Convert to use Bus Number field defines Ilpo Järvinen
2025-12-19 17:40 ` [PATCH 22/23] PCI: Add pbus_validate_busn() for Bus Number validation Ilpo Järvinen
2025-12-19 17:40 ` [PATCH 23/23] PCI: Move scanbus bridge scanning to setup-cardbus.c Ilpo Järvinen
2026-01-26 17:39 ` [PATCH 00/23] PCI: Resource code fixes (supercedes earlier series) & cleanups Bjorn Helgaas

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