From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 B4CDC2F3C04; Fri, 10 Oct 2025 13:18:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760102290; cv=none; b=DA0Qv8kmJYYxhMWn7nHoFDlndn2DS+r26e0pWqioaCgTensiVBjTdBJuerW5f1j1CE4VWOktF4xvkw444B74x4llxraerD77HBLjjwhJ95sWv/CiO5hSEPhYYqtUfZzZtb/aUHaD5YlVbKDCzS/nCO61VLIgnt9/jg3j963Xt2w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760102290; c=relaxed/simple; bh=gZ8vd/rHYCUunpnS5DY25WuZZF8WtebHdCqLSof0Noo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=GzxlW+NT/3WEv3ybZmB7PzsGtPxMurhjovoXnbbup8sAk3jXWYoCXafufyZbPOEG6op84Q95GjjmqbPW6RS/5O55OsSLkohG50HWE595NOqxv+XYxAEdYLMwjrlcfCDwr6xqUtuPhgsVOgYVNy5YKu0hAh0ReIB+p8u/1DeIGoo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=dkbpHnz6; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="dkbpHnz6" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 386DFC4CEF9; Fri, 10 Oct 2025 13:18:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1760102290; bh=gZ8vd/rHYCUunpnS5DY25WuZZF8WtebHdCqLSof0Noo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dkbpHnz6XnMM7+HedLyjPV23jRgSK7B1W7vbTen5YUtZtDzBZ4QMtS1hbToOz4ezq OKFFuaxJTJvu7kCWkup4f164LozqvTQH+bfRqJm1p677jU7k5UgxnZD6eiet798z5d 6Q3MFAThLPp/VCDZIGnlm3uKavs0rXM0qXq8PiXU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Han Xu , Herbert Xu , David Sterba Subject: [PATCH 6.17 21/26] crypto: zstd - Fix compression bug caused by truncation Date: Fri, 10 Oct 2025 15:16:16 +0200 Message-ID: <20251010131331.977697160@linuxfoundation.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251010131331.204964167@linuxfoundation.org> References: <20251010131331.204964167@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.17-stable review patch. If anyone has any objections, please let me know. ------------------ From: Herbert Xu commit 81c1a15eb4a273eabedfcc28eb6afa4b50cb8a46 upstream. Use size_t for the return value of zstd_compress_cctx as otherwise negative errors will be truncated to a positive value. Reported-by: Han Xu Fixes: f5ad93ffb541 ("crypto: zstd - convert to acomp") Signed-off-by: Herbert Xu Reviewed-by: David Sterba Tested-by: Han Xu Signed-off-by: Herbert Xu Signed-off-by: Greg Kroah-Hartman --- crypto/zstd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/crypto/zstd.c b/crypto/zstd.c index c2a19cb0879d..ac318d333b68 100644 --- a/crypto/zstd.c +++ b/crypto/zstd.c @@ -83,7 +83,7 @@ static void zstd_exit(struct crypto_acomp *acomp_tfm) static int zstd_compress_one(struct acomp_req *req, struct zstd_ctx *ctx, const void *src, void *dst, unsigned int *dlen) { - unsigned int out_len; + size_t out_len; ctx->cctx = zstd_init_cctx(ctx->wksp, ctx->wksp_size); if (!ctx->cctx) -- 2.51.0