From: "Alexey V. Vissarionov" <gremlin@altlinux.org>
Date: Sun, 18 Dec 2022 06:33:47 +0300
Subject: [PATCH] PCI/IOV: Enlarge virtfn sysfs name buffer
References: bsc#1012628
Patch-mainline: 6.2.3
Git-commit: ea0b5aa5f184cf8293c93163f0fb00505190d431
[ Upstream commit ea0b5aa5f184cf8293c93163f0fb00505190d431 ]
The sysfs link name "virtfn%u" constructed by pci_iov_sysfs_link() requires
17 bytes to contain the longest possible string. Increase VIRTFN_ID_LEN to
accommodate that.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
[bhelgaas: commit log, comment at #define]
Fixes: dd7cc44d0bce ("PCI: add SR-IOV API for Physical Function driver")
Link: https://lore.kernel.org/r/20221218033347.23743-1-gremlin@altlinux.org
Signed-off-by: Alexey V. Vissarionov <gremlin@altlinux.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
drivers/pci/iov.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index 95221757..b2e83227 100644
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -14,7 +14,7 @@
#include <linux/delay.h>
#include "pci.h"
-#define VIRTFN_ID_LEN 16
+#define VIRTFN_ID_LEN 17 /* "virtfn%u\0" for 2^32 - 1 */
int pci_iov_virtfn_bus(struct pci_dev *dev, int vf_id)
{
--
2.35.3