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[2001:b400:e282:3e93:79b7:c241:f8ca:5d9d]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-847f6dddf8bsm2493150b3a.61.2026.07.05.10.38.16 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Sun, 05 Jul 2026 10:38:19 -0700 (PDT) From: Po-Sheng Lin To: rostedt@goodmis.org, mhiramat@kernel.org Cc: mathieu.desnoyers@efficios.com, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, Po-Sheng Lin Subject: [PATCH] trace: use strscpy() instead of strcpy() in trace_sched_switch Date: Mon, 6 Jul 2026 01:36:48 +0800 Message-Id: <20260705173648.5418-1-posheng.lin.tw@gmail.com> X-Mailer: git-send-email 2.40.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Replace strcpy() with strscpy() in __trace_find_cmdline() for consistency with the existing strscpy() call in the same function, and to avoid potential buffer overflow as flagged by the Kernel Self Protection Project. Signed-off-by: Po-Sheng Lin --- kernel/trace/trace_sched_switch.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/kernel/trace/trace_sched_switch.c b/kernel/trace/trace_sched_switch.c index e9f0ff9626600..1bd351c1fbfb5 100644 --- a/kernel/trace/trace_sched_switch.c +++ b/kernel/trace/trace_sched_switch.c @@ -286,12 +286,12 @@ static void __trace_find_cmdline(int pid, char comm[]) int tpid; if (!pid) { - strcpy(comm, ""); + strscpy(comm, "", TASK_COMM_LEN); return; } if (WARN_ON_ONCE(pid < 0)) { - strcpy(comm, ""); + strscpy(comm, "", TASK_COMM_LEN); return; } @@ -304,7 +304,7 @@ static void __trace_find_cmdline(int pid, char comm[]) return; } } - strcpy(comm, "<...>"); + strscpy(comm, "<...>", TASK_COMM_LEN); } void trace_find_cmdline(int pid, char comm[]) -- 2.40.1