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[v6,9/9] drm: Replace strcpy() with strscpy()

Message ID 20240812022933.69850-10-laoar.shao@gmail.com (mailing list archive)
State Superseded
Headers show
Series Improve the copy of task comm | expand

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Commit Message

Yafang Shao Aug. 12, 2024, 2:29 a.m. UTC 
To prevent erros from occurring when the src string is longer than the
dst string in strcpy(), we should use strscpy() instead. This
approach also facilitates future extensions to the task comm.

Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: David Airlie <airlied@gmail.com>
---
 drivers/gpu/drm/drm_framebuffer.c     | 2 +-
 drivers/gpu/drm/i915/i915_gpu_error.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c
index 888aadb6a4ac..71bf8997eddf 100644
--- a/drivers/gpu/drm/drm_framebuffer.c
+++ b/drivers/gpu/drm/drm_framebuffer.c
@@ -868,7 +868,7 @@  int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
 	INIT_LIST_HEAD(&fb->filp_head);
 
 	fb->funcs = funcs;
-	strcpy(fb->comm, current->comm);
+	strscpy(fb->comm, current->comm, sizeof(fb->comm));
 
 	ret = __drm_mode_object_add(dev, &fb->base, DRM_MODE_OBJECT_FB,
 				    false, drm_framebuffer_free);
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 625b3c024540..97424a53bf9e 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -1411,7 +1411,7 @@  static bool record_context(struct i915_gem_context_coredump *e,
 	rcu_read_lock();
 	task = pid_task(ctx->pid, PIDTYPE_PID);
 	if (task) {
-		strcpy(e->comm, task->comm);
+		strscpy(e->comm, task->comm, sizeof(e->comm));
 		e->pid = task->pid;
 	}
 	rcu_read_unlock();