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From: Sasha Levin <sashal@kernel.org>
To: stable@vger.kernel.org
Cc: Chelsy Ratnawat <chelsyratnawat2001@gmail.com>,
	Ioana Ciornei <ioana.ciornei@nxp.com>,
	Christophe Leroy <christophe.leroy@csgroup.eu>,
	Sasha Levin <sashal@kernel.org>
Subject: [PATCH 6.12.y 1/2] bus: fsl-mc: Replace snprintf and sprintf with sysfs_emit in sysfs show functions
Date: Fri, 13 Feb 2026 11:12:18 -0500	[thread overview]
Message-ID: <20260213161219.3554825-1-sashal@kernel.org> (raw)
In-Reply-To: <2026021346-water-matted-7833@gregkh>

From: Chelsy Ratnawat <chelsyratnawat2001@gmail.com>

[ Upstream commit a50522c805a6c575c80f41b04706e084d814e116 ]

Use sysfs_emit() instead of snprintf()/sprintf()  when writing
to sysfs buffers, as recommended by the kernel documentation.

Signed-off-by: Chelsy Ratnawat <chelsyratnawat2001@gmail.com>
Acked-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Link: https://lore.kernel.org/r/20250822124339.1739290-1-chelsyratnawat2001@gmail.com
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Stable-dep-of: 148891e95014 ("bus: fsl-mc: fix use-after-free in driver_override_show()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/bus/fsl-mc/fsl-mc-bus.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c
index dbc8d8f14ce7d..00278081daafd 100644
--- a/drivers/bus/fsl-mc/fsl-mc-bus.c
+++ b/drivers/bus/fsl-mc/fsl-mc-bus.c
@@ -175,8 +175,8 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
 {
 	struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
 
-	return sprintf(buf, "fsl-mc:v%08Xd%s\n", mc_dev->obj_desc.vendor,
-		       mc_dev->obj_desc.type);
+	return sysfs_emit(buf, "fsl-mc:v%08Xd%s\n", mc_dev->obj_desc.vendor,
+			mc_dev->obj_desc.type);
 }
 static DEVICE_ATTR_RO(modalias);
 
@@ -202,7 +202,7 @@ static ssize_t driver_override_show(struct device *dev,
 {
 	struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
 
-	return snprintf(buf, PAGE_SIZE, "%s\n", mc_dev->driver_override);
+	return sysfs_emit(buf, "%s\n", mc_dev->driver_override);
 }
 static DEVICE_ATTR_RW(driver_override);
 
-- 
2.51.0


  reply	other threads:[~2026-02-13 16:12 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-02-13 12:11 FAILED: patch "[PATCH] bus: fsl-mc: fix use-after-free in driver_override_show()" failed to apply to 6.12-stable tree gregkh
2026-02-13 16:12 ` Sasha Levin [this message]
2026-02-13 16:12   ` [PATCH 6.12.y 2/2] bus: fsl-mc: fix use-after-free in driver_override_show() Sasha Levin

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