linux-kernel - [tip: perf/core] x86/events/amd/iommu: Increase IOMMU_NAME

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Message-ID: <173961692629.10177.5199148332316223161.tip-bot2@tip-bot2>
Date: Sat, 15 Feb 2025 10:55:25 -0000
From: "tip-bot2 for Andy Shevchenko" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
 "Peter Zijlstra (Intel)" <peterz@...radead.org>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: perf/core] x86/events/amd/iommu: Increase IOMMU_NAME_SIZE

The following commit has been merged into the perf/core branch of tip:

Commit-ID:     1623ced247f7cb1b48a27cca6b0f17fe5ab5942b
Gitweb:        https://git.kernel.org/tip/1623ced247f7cb1b48a27cca6b0f17fe5ab5942b
Author:        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
AuthorDate:    Mon, 10 Feb 2025 21:34:12 +02:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Fri, 14 Feb 2025 10:32:02 +01:00

x86/events/amd/iommu: Increase IOMMU_NAME_SIZE

The init_one_iommu() takes an unsigned int argument that can't be checked for
the boundaries at compile time and GCC complains about that when build with
`make W=1`:

arch/x86/events/amd/iommu.c:441:53: note: directive argument in the range [0, 4294967294]
arch/x86/events/amd/iommu.c:441:9: note: ‘snprintf’ output between 12 and 21 bytes into a destination of size 16

Increase the size to cover all possible cases.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Link: https://lkml.kernel.org/r/20250210193412.483233-1-andriy.shevchenko@linux.intel.com
---
 arch/x86/events/amd/iommu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/events/amd/iommu.c b/arch/x86/events/amd/iommu.c
index b15f7b9..f8228d8 100644
--- a/arch/x86/events/amd/iommu.c
+++ b/arch/x86/events/amd/iommu.c
@@ -30,7 +30,7 @@
 #define GET_DOMID_MASK(x)  (((x)->conf1 >> 16) & 0xFFFFULL)
 #define GET_PASID_MASK(x)  (((x)->conf1 >> 32) & 0xFFFFFULL)
 
-#define IOMMU_NAME_SIZE 16
+#define IOMMU_NAME_SIZE 24
 
 struct perf_amd_iommu {
 	struct list_head list;