releases/5.15.165/rdma-mlx4-fix-truncated-output-warning-in-mad.c.patch

From f908ea9cb069d4cddd2cefd2f6ea49d6403f649f Mon Sep 17 00:00:00 2001
From: Sasha Levin <sashal@kernel.org>
Date: Sun, 16 Jun 2024 19:16:33 +0300
Subject: RDMA/mlx4: Fix truncated output warning in mad.c
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From: Leon Romanovsky <leonro@nvidia.com>

[ Upstream commit 0d2e6992fc956e3308cd5376c18567def4cb3967 ]

Increase size of the name array to avoid truncated output warning.

drivers/infiniband/hw/mlx4/mad.c: In function ‘mlx4_ib_alloc_demux_ctx’:
drivers/infiniband/hw/mlx4/mad.c:2197:47: error: ‘%d’ directive output
may be truncated writing between 1 and 11 bytes into a region of size 4
[-Werror=format-truncation=]
 2197 |         snprintf(name, sizeof(name), "mlx4_ibt%d", port);
      |                                               ^~
drivers/infiniband/hw/mlx4/mad.c:2197:38: note: directive argument in
the range [-2147483645, 2147483647]
 2197 |         snprintf(name, sizeof(name), "mlx4_ibt%d", port);
      |                                      ^~~~~~~~~~~~
drivers/infiniband/hw/mlx4/mad.c:2197:9: note: ‘snprintf’ output between
10 and 20 bytes into a destination of size 12
 2197 |         snprintf(name, sizeof(name), "mlx4_ibt%d", port);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/infiniband/hw/mlx4/mad.c:2205:48: error: ‘%d’ directive output
may be truncated writing between 1 and 11 bytes into a region of size 3
[-Werror=format-truncation=]
 2205 |         snprintf(name, sizeof(name), "mlx4_ibwi%d", port);
      |                                                ^~
drivers/infiniband/hw/mlx4/mad.c:2205:38: note: directive argument in
the range [-2147483645, 2147483647]
 2205 |         snprintf(name, sizeof(name), "mlx4_ibwi%d", port);
      |                                      ^~~~~~~~~~~~~
drivers/infiniband/hw/mlx4/mad.c:2205:9: note: ‘snprintf’ output between
11 and 21 bytes into a destination of size 12
 2205 |         snprintf(name, sizeof(name), "mlx4_ibwi%d", port);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/infiniband/hw/mlx4/mad.c:2213:48: error: ‘%d’ directive output
may be truncated writing between 1 and 11 bytes into a region of size 3
[-Werror=format-truncation=]
 2213 |         snprintf(name, sizeof(name), "mlx4_ibud%d", port);
      |                                                ^~
drivers/infiniband/hw/mlx4/mad.c:2213:38: note: directive argument in
the range [-2147483645, 2147483647]
 2213 |         snprintf(name, sizeof(name), "mlx4_ibud%d", port);
      |                                      ^~~~~~~~~~~~~
drivers/infiniband/hw/mlx4/mad.c:2213:9: note: ‘snprintf’ output between
11 and 21 bytes into a destination of size 12
 2213 |         snprintf(name, sizeof(name), "mlx4_ibud%d", port);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make[6]: *** [scripts/Makefile.build:244: drivers/infiniband/hw/mlx4/mad.o] Error 1

Fixes: fc06573dfaf8 ("IB/mlx4: Initialize SR-IOV IB support for slaves in master context")
Link: https://lore.kernel.org/r/f3798b3ce9a410257d7e1ec7c9e285f1352e256a.1718554569.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/infiniband/hw/mlx4/mad.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c
index d13ecbdd43917..3d29d5baf503e 100644
--- a/drivers/infiniband/hw/mlx4/mad.c
+++ b/drivers/infiniband/hw/mlx4/mad.c
@@ -2158,7 +2158,7 @@ static int mlx4_ib_alloc_demux_ctx(struct mlx4_ib_dev *dev,
 				       struct mlx4_ib_demux_ctx *ctx,
 				       int port)
 {
-	char name[12];
+	char name[21];
 	int ret = 0;
 	int i;
 
-- 
2.43.0