From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 0415151812D; Wed, 30 Sep 2026 18:01:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790791265; cv=none; b=Y8K+BSrGYU0Y+79qv4ctu+qSUySfhUijckP7QXjhg26WrGMGHua4D7lAg6V67DQuDSQsyT+E/TrWXhPJr831irnihRXVhVfi/fFLwxTVAuG5O1oGwA7mKXVDet6tQpDCpBy8Ee4Vmr2VqbC6LHANMQ4BNnhsbUyMAUa8eCSxueU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790791265; c=relaxed/simple; bh=pCoyP4f6qRD/kfgLPRg2QWXpOi8PDDVKEOnU/EDVeEA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ahOW+PPpkklfjlgGL7rh8XMViUuBMHzU7z/eza6FZqS/l/dZWm4lv6HGv4eL+amonnc4BgMjKTojxCE1uJXPnRLaR+3+BW4pljrbLZKz4XbqLy6ubzVw8R8hxQ4wTMnsv46axT8NYtp/IPZ/DpTdiIf+IOplQmxE606a+LYziNA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=UdM1BCXc; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="UdM1BCXc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5E7D81F000FF; Wed, 30 Sep 2026 18:01:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1790791263; bh=RUWYUpB4L2nUyxxxJRgdWV9zesWGVhppGeW3sS2YIlo=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=UdM1BCXc6jkE9YRvbbAo7l03gTnd9sF9gHpJf+HESZgrAAWwS89HFGAeGeq+XR/4k l5Slef0z9GCLm3h9w1KrgqW7pCJotii72Ws0OwloMty6wAGlIq8IzQ+990/S1l51SC u6ei0V5UNFU0hBWzC48UlrEboDGx2BJ6P0xID6k0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Hongfu Li , =?UTF-8?q?Michal=20Koutn=C3=BD?= , Tejun Heo , Sasha Levin Subject: [PATCH 5.15 241/752] selftests/cgroup: Fix cg_run_in_subcgroups ignoring arg parameter Date: Wed, 30 Sep 2026 17:21:51 +0200 Message-ID: <20260930152403.482839177@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260930152358.131179731@linuxfoundation.org> References: <20260930152358.131179731@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-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Hongfu Li [ Upstream commit a8c6daab4b0e276508b7ffdd66c60fd3020a9178 ] cg_run_in_subcgroups() discards its arg and always passes NULL to cg_run(), turning the (void *)100 from test_kmem_dead_cgroups() into NULL so no allocation occurs. This makes test_kmem_dead_cgroups() falsely pass without exercising the "dying cgroup with charged slab" scenario it intends to test. Pass the arg through to cg_run() to fix this. Fixes: 933dc80ec262 ("kselftests: cgroup: add kernel memory accounting tests") Signed-off-by: Hongfu Li Reviewed-by: Michal Koutný Signed-off-by: Tejun Heo Signed-off-by: Sasha Levin --- tools/testing/selftests/cgroup/test_kmem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/cgroup/test_kmem.c b/tools/testing/selftests/cgroup/test_kmem.c index 22b31ebb35139..c960289a4f09b 100644 --- a/tools/testing/selftests/cgroup/test_kmem.c +++ b/tools/testing/selftests/cgroup/test_kmem.c @@ -140,7 +140,7 @@ static int cg_run_in_subcgroups(const char *parent, return -1; } - if (cg_run(child, fn, NULL)) { + if (cg_run(child, fn, arg)) { cg_destroy(child); free(child); return -1; -- 2.53.0