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 66AF920C001; Tue, 17 Jun 2025 16:38:18 +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=1750178298; cv=none; b=ezRXoGO0TdHNUUEA4CdFyJUtVNqEnstdZG65AdE83PcTEp3sG0AiicPTOVM/dhVIVYmM01S4oYbjp+45hZOqAMii2YW8iq6YchBIHj2983Ut0CAx3bpie1HDiE6nXvBLkvZwCAiAj5fOY6ItQKXUx2Vn8lc5wRAy31xfK9Hc71w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750178298; c=relaxed/simple; bh=A11kq6AxO8vdFiu4anS5GGM7J5hDqyG2joSlczYaeuQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=B6k+xhVPfdP0ajCYgQ4QHlPi6LA5buUKJGOVriG3fNv5A5bcbIpRoYjQsimWuoa9MMpQ5epbcoz19nItrTu1/PBPBJiZMvnPBDLXLJh2nz9yTT0JxlHUl6x7if/lZ32f1qEvkDWUW0gwZy7CBGUYX4PJ2FbbQodSVQuKpQQ1CIM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=x0aN2Yl0; 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="x0aN2Yl0" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CB91EC4CEE3; Tue, 17 Jun 2025 16:38:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1750178298; bh=A11kq6AxO8vdFiu4anS5GGM7J5hDqyG2joSlczYaeuQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=x0aN2Yl0iSmPc+9MaHKDp9tT8USrm2jjFjb9kQtVEpoMMIwjytzbZfXw060uU+9gw 3QXD5glN5X+j2oTjpyjJIoe2jNk9zVsvE7Yt6SWmk+G1tNhjH7XLG2tEg1zs0HVNgD jFc1ZpiGYD0/ux6Bsn9wvXZz3LveXEzNyz/OEG58= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Kent Overstreet , Benjamin Marzinski , Mikulas Patocka , Sasha Levin Subject: [PATCH 6.15 440/780] dm-flakey: error all IOs when num_features is absent Date: Tue, 17 Jun 2025 17:22:28 +0200 Message-ID: <20250617152509.378069633@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250617152451.485330293@linuxfoundation.org> References: <20250617152451.485330293@linuxfoundation.org> User-Agent: quilt/0.68 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 6.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Benjamin Marzinski [ Upstream commit 40ed054f39bc99eac09871c33198e501f4acdf24 ] dm-flakey would error all IOs if num_features was 0, but if it was absent, dm-flakey would never error any IO. Fix this so that no num_features works the same as num_features set to 0. Fixes: aa7d7bc99fed7 ("dm flakey: add an "error_reads" option") Reported-by: Kent Overstreet Signed-off-by: Benjamin Marzinski Signed-off-by: Mikulas Patocka Signed-off-by: Sasha Levin --- drivers/md/dm-flakey.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/md/dm-flakey.c b/drivers/md/dm-flakey.c index b690905ab89ff..806a80dd3bd9b 100644 --- a/drivers/md/dm-flakey.c +++ b/drivers/md/dm-flakey.c @@ -53,8 +53,8 @@ struct per_bio_data { static int parse_features(struct dm_arg_set *as, struct flakey_c *fc, struct dm_target *ti) { - int r; - unsigned int argc; + int r = 0; + unsigned int argc = 0; const char *arg_name; static const struct dm_arg _args[] = { @@ -65,14 +65,13 @@ static int parse_features(struct dm_arg_set *as, struct flakey_c *fc, {0, PROBABILITY_BASE, "Invalid random corrupt argument"}, }; - /* No feature arguments supplied. */ - if (!as->argc) - return 0; - - r = dm_read_arg_group(_args, as, &argc, &ti->error); - if (r) + if (as->argc && (r = dm_read_arg_group(_args, as, &argc, &ti->error))) return r; + /* No feature arguments supplied. */ + if (!argc) + goto error_all_io; + while (argc) { arg_name = dm_shift_arg(as); argc--; @@ -217,6 +216,7 @@ static int parse_features(struct dm_arg_set *as, struct flakey_c *fc, if (!fc->corrupt_bio_byte && !test_bit(ERROR_READS, &fc->flags) && !test_bit(DROP_WRITES, &fc->flags) && !test_bit(ERROR_WRITES, &fc->flags) && !fc->random_read_corrupt && !fc->random_write_corrupt) { +error_all_io: set_bit(ERROR_WRITES, &fc->flags); set_bit(ERROR_READS, &fc->flags); } -- 2.39.5