From nobody Mon Dec 1 22:35:45 2025 Received: from out-185.mta0.migadu.com (out-185.mta0.migadu.com [91.218.175.185]) (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 2A2BE3FF1 for ; Sun, 30 Nov 2025 00:55:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.185 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764464144; cv=none; b=RIfC1QhTi1DdA6Q3JOBl6Em+hMOmDUOkkMM4hNNF8a8R6lZ2taulmT0BUMOCSTAy4F9WweWA4/7m8Fr8Kp0NWIqq7P5BR2ou45DM+f6tFz1t1is/TKJDuHqPSHT4JA8c1BvMRCujsOPvI6G24/iOUyjM21t1YTXxbgGK6ocVYcc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764464144; c=relaxed/simple; bh=BkUuxsKZKN00r2RjiS4MxSZFxrKime88v+Bansi5xds=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=SwNE7UrbMnLM0UMMfNu2Vug+qMC6mp1iGChxrHU+t4FUZygwF9NRA8t/weIgU3UKiYw0Ue8iJVPmz8t5oDBW4ThzY4TNi8t0xTILYjaMSJzOI7lhmXLYZdwhydEG/jTqiq7u2oc7herYcZn/yY/EJyn/JMf0vrgzhp8r3kuGNGc= 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=lCrK1YG8; arc=none smtp.client-ip=91.218.175.185 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="lCrK1YG8" 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=1764464137; 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=c8jsj49RlqxO9evpv8BMnWQhpCHg8/alPpixATKFWQQ=; b=lCrK1YG8WlICWYVF+G3mPgRT+nQDfeKx8+i0ghYvmxEIDlJuXSDLJLDxMuI9onrxiedxn6 xHdP5rgfNGJBuC1lcKVbcuWOyVHq0oKPhoUEFDi8Igg8L6IJoUjNZ8QbCk1Hp/nbL7X2Sc GHafEXnRAsL5dD21r1T0f655iYxnPWM= From: Thorsten Blum To: Chris Mason , David Sterba Cc: Thorsten Blum , linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] btrfs: Replace memcpy + NUL termination in _btrfs_printk Date: Sun, 30 Nov 2025 01:55:17 +0100 Message-ID: <20251130005518.82065-1-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" Use strscpy() to copy the NUL-terminated source string 'fmt' to the destination buffer 'lvl' instead of using memcpy() followed by a manual NUL termination. No functional changes. Signed-off-by: Thorsten Blum --- fs/btrfs/messages.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/messages.c b/fs/btrfs/messages.c index a0cf8effe008..083e228e6d6c 100644 --- a/fs/btrfs/messages.c +++ b/fs/btrfs/messages.c @@ -1,5 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 =20 +#include #include "fs.h" #include "messages.h" #include "discard.h" @@ -229,8 +230,7 @@ void __cold _btrfs_printk(const struct btrfs_fs_info *f= s_info, const char *fmt, size_t size =3D printk_skip_level(fmt) - fmt; =20 if (kern_level >=3D '0' && kern_level <=3D '7') { - memcpy(lvl, fmt, size); - lvl[size] =3D '\0'; + strscpy(lvl, fmt, size + 1); type =3D logtypes[kern_level - '0']; ratelimit =3D &printk_limits[kern_level - '0']; } --=20 Thorsten Blum GPG: 1D60 735E 8AEF 3BE4 73B6 9D84 7336 78FD 8DFE EAD4