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 6.6.y 1/2] bus: fsl-mc: Replace snprintf and sprintf with sysfs_emit in sysfs show functions
Date: Fri, 13 Feb 2026 11:22:28 -0500 [thread overview]
Message-ID: <20260213162229.3559221-1-sashal@kernel.org> (raw)
In-Reply-To: <2026021346-runner-symphony-9463@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 03642df2df0bb..3db939c619013 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
next prev parent reply other threads:[~2026-02-13 16:22 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 6.6-stable tree gregkh
2026-02-13 16:22 ` Sasha Levin [this message]
2026-02-13 16:22 ` [PATCH 6.6.y 2/2] bus: fsl-mc: fix use-after-free in driver_override_show() Sasha Levin
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