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AJvYcCXUUX8c8aBsXY0RmBQijfrHl5m68VII6PU3yLiNXV6FhqTBx30uYvsI2lenhhfYkEo0/2LX97/WsOrrydh71x0zV/e/LjbLcxajWlxMI6Htdsg699KDD3gFnv+UPQhonVIeBHq0GvV3/Wzhwk+6ZxjUVxhWiag2/e6m1bs2KvjrKpzGgvIf1Nk3//hmPd6nEiNzTpfnjqCoKXYwpEiIBztkxyhVM7YTDWF+MaQEurT20C2MqYSSz67341PyzkF8dMkUwo34UFCQ4ufZXiQkYQlIiDvhIYP9kMsIKSOjuO1vp0v/wAzFSTgtZIvcVz9zi0B2FLhG/A== X-Gm-Message-State: AOJu0YyNz3YDYyL++Vdubaj4CY0qVi/vw2Gsz2j6Xnq6SS8kBuX/gfpB tAy2bhFXBhYrJuDri05Rtyv+WOFSxmjzJEv5GSfwD9tgKliOfdxq X-Google-Smtp-Source: AGHT+IHwLzKazOZk9J+TnuaENF2GrO7T5JApXVTdzZDurk6fW60Sg+sw/brS6M3qBlKISuVvI9yc+A== X-Received: by 2002:a05:6a00:4d91:b0:6e7:20a7:9fc0 with SMTP id d2e1a72fcca58-70629d0d58cmr6849890b3a.34.1718937169948; Thu, 20 Jun 2024 19:32:49 -0700 (PDT) Received: from localhost.localdomain ([39.144.105.24]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-706511944d2sm332488b3a.70.2024.06.20.19.32.38 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 20 Jun 2024 19:32:49 -0700 (PDT) From: Yafang Shao To: torvalds@linux-foundation.org Cc: ebiederm@xmission.com, alexei.starovoitov@gmail.com, rostedt@goodmis.org, catalin.marinas@arm.com, akpm@linux-foundation.org, penguin-kernel@i-love.sakura.ne.jp, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, audit@vger.kernel.org, linux-security-module@vger.kernel.org, selinux@vger.kernel.org, bpf@vger.kernel.org, netdev@vger.kernel.org, dri-devel@lists.freedesktop.org, Yafang Shao , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter Subject: [PATCH v3 11/11] drm: Replace strcpy() with __get_task_comm() Date: Fri, 21 Jun 2024 10:29:59 +0800 Message-Id: <20240621022959.9124-12-laoar.shao@gmail.com> X-Mailer: git-send-email 2.30.1 (Apple Git-130) In-Reply-To: <20240621022959.9124-1-laoar.shao@gmail.com> References: <20240621022959.9124-1-laoar.shao@gmail.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 To prevent erros from occurring when the src string is longer than the dst string in strcpy(), we should use __get_task_comm() instead. This approach also facilitates future extensions to the task comm. Signed-off-by: Yafang Shao Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Thomas Zimmermann Cc: David Airlie Cc: Daniel Vetter Acked-by: Daniel Vetter --- drivers/gpu/drm/drm_framebuffer.c | 2 +- drivers/gpu/drm/i915/i915_gpu_error.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c index 888aadb6a4ac..25262b07ffaf 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); + __get_task_comm(fb->comm, sizeof(fb->comm), current); 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..b2c16a53bd24 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); + __get_task_comm(e->comm, sizeof(e->comm), task); e->pid = task->pid; } rcu_read_unlock();