From nobody Sun Oct 5 00:07:06 2025 Received: from out-171.mta0.migadu.com (out-171.mta0.migadu.com [91.218.175.171]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BF756296BCA for ; Mon, 11 Aug 2025 17:04:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.171 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754931852; cv=none; b=Ltuft7oXUXJfGkKliS1mdYUtNljjN/lEYqo9Tv9V4kktvaHr3JNGCMli3RZFl9/3fYbrNCOfF1zWCJYLHIciDh2z1gKpNr9yc9w4jAXH9fIBki1EVRsweVtMwRToN5UI15hoaoO9CA9CqDV0yrOrpf2SbISPuI4fSzYj/PUH9UQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754931852; c=relaxed/simple; bh=afBbVq10j3fxbGFfay5iR2qaokXHgyQ1UN6WKW/T9ZE=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=sB5D/jbq9FcReeg0REmkIvZw22DjtotNHF9wHVSrG/7J3CSUj4UA8Tk18w+hvHWjkFwE/pHxumkeDD23q/nQlGWB33zfNlDtTBm/YfoHqso0XNN4ANb4RKOP2S2dWIwWeXAC9fmPFHR5hdmeKYQ1LXUNgiVkJrGpWVXQJ8vZgRM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=EZJwxZkG; arc=none smtp.client-ip=91.218.175.171 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="EZJwxZkG" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1754931848; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=CpVY826a4cvxKLVO9LiMB9JovYkuZkAnBIFJH30Z+Dw=; b=EZJwxZkG1v3gLPdBOP+BSQINydWj4qe5Y9M4KHRJu5Du7XCLtfPnBwg1lrIa5jgbtdD8Uf rmm501x89NomqYyMyV2mdfAB7D8jcvmHjVk9+wyrkaRvrd51SETm+MCIFT+kpvvTJFfZbb TQ0AxHsre52SVmgg7G/sZq64P14DpLo= From: Thorsten Blum To: Jason Wessel , Daniel Thompson , Douglas Anderson , Thorsten Blum , Justin Stitt Cc: linux-hardening@vger.kernel.org, Daniel Thompson , kgdb-bugreport@lists.sourceforge.net, linux-kernel@vger.kernel.org Subject: [PATCH] kdb: Replace deprecated strcpy() with strscpy() in vkdb_printf() Date: Mon, 11 Aug 2025 19:03:48 +0200 Message-ID: <20250811170351.68985-1-thorsten.blum@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" strcpy() is deprecated; use strscpy() instead. Use the return value of strscpy() instead of calling strlen() again. Link: https://github.com/KSPP/linux/issues/88 Signed-off-by: Thorsten Blum --- kernel/debug/kdb/kdb_io.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/kernel/debug/kdb/kdb_io.c b/kernel/debug/kdb/kdb_io.c index 9b11b10b120c..2062494c413b 100644 --- a/kernel/debug/kdb/kdb_io.c +++ b/kernel/debug/kdb/kdb_io.c @@ -732,8 +732,7 @@ int vkdb_printf(enum kdb_msgsrc src, const char *fmt, v= a_list ap) * Shift the buffer left. */ *cphold =3D replaced_byte; - strcpy(kdb_buffer, cphold); - len =3D strlen(kdb_buffer); + len =3D strscpy(kdb_buffer, cphold); next_avail =3D kdb_buffer + len; size_avail =3D sizeof(kdb_buffer) - len; goto kdb_print_out; @@ -872,8 +871,7 @@ int vkdb_printf(enum kdb_msgsrc src, const char *fmt, v= a_list ap) */ if (kdb_grepping_flag && !suspend_grep) { *cphold =3D replaced_byte; - strcpy(kdb_buffer, cphold); - len =3D strlen(kdb_buffer); + len =3D strscpy(kdb_buffer, cphold); next_avail =3D kdb_buffer + len; size_avail =3D sizeof(kdb_buffer) - len; } --=20 2.50.1