From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-187.mta1.migadu.com (out-187.mta1.migadu.com [95.215.58.187]) (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 7EAA836E46E for ; Sat, 28 Feb 2026 09:26:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.187 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772270790; cv=none; b=pR85WMepRLazFEW7MYz63KOlCzY67rmGvIJqV62Nfz6XNfbKYEXAnvpPRCeGqZwlUVrXN3zlYg3PMFulS62kogPPvdyrCLrHIcGRKC3jafMcMVPqJxK0vex6d87yRqw1Qq/XC7jpHxEnkRTX7HnYILZWgFNg1pz2NkoZFxfZbho= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772270790; c=relaxed/simple; bh=JHJTjBN9sdP3PIZPcaoCkVmsFhzTji5oF85xk08/AqM=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=ikKPifjgUWbfjOq7FcaXeqxByUdaW1AGWzf/vDsBVX8LARJM+gNeeXbPlZ3CBCYu1bpYgnDk+azCW1GJrcQTDtuwtYNKaQYBmdLgN0EuBGdAquKapySjinzkf7otSoVyvLupzW0uDnsJWSO1FWXgQ8QSb9oUk5kJNcLb/6DFkck= 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=sYG6uRHR; arc=none smtp.client-ip=95.215.58.187 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="sYG6uRHR" 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=1772270786; 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=ufl+bln/o0r+Nd2LaZsKhAZ8tiwItJ79Wy7NKLYrQ58=; b=sYG6uRHReyE4sXfmZMXZA+gwg0kIPVTLZCr9h+041ev210OTWJnLysL6DHJB1Kj7HrpgwJ eTLuy8YtYx8zNgcZyLpDopgeA+pmXZP8cS4RrPMyjHz0/XhgMElLhPLtvQbSw82ZUdjxdF U8wwASUkfEIEnRbFCBAC3MgpvluvLf0= From: Hui Zhu To: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Eduard Zingerman , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Shuah Khan , JP Kobryn , Roman Gushchin , bpf@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Hui Zhu Subject: [PATCH bpf-next v4 0/3] Fix test_cgroup_iter_memcg issues found during back-porting Date: Sat, 28 Feb 2026 17:25:52 +0800 Message-ID: Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT From: Hui Zhu While back-porting "mm: bpf kfuncs to access memcg data", I encountered issues with test_cgroup_iter_memcg, specifically in test_kmem. These patches are my fixes for the problems I encountered. Changelog: v4: Fixed wrong git commit log in "bpf: Use bpf_core_enum_value for stats in cgroup_iter_memcg". v3: According to the comments of JP Kobryn, remove kmem subtest from cgroup_iter_memcg and fix assertion string in test_pgfault. v2: According to the comments of JP Kobryn, added bpf_core_enum_value() usage in the BPF program to handle cross-kernel enum value differences at load-time instead of compile-time. Dropped the mm/memcontrol.c patch. Modified test_kmem handling: instead of skipping when nokmem is set, verify that kmem value is zero as expected. According to the comments of bot, fixed assertion message: changed "bpf_mem_cgroup_page_state" to "bpf_mem_cgroup_vm_events" for PGFAULT check. Hui Zhu (3): selftests/bpf: Remove kmem subtest from cgroup_iter_memcg bpf: Use bpf_core_enum_value for stats in cgroup_iter_memcg selftests/bpf: Check bpf_mem_cgroup_page_state return value .../testing/selftests/bpf/cgroup_iter_memcg.h | 2 - .../bpf/prog_tests/cgroup_iter_memcg.c | 38 +++++-------------- .../selftests/bpf/progs/cgroup_iter_memcg.c | 18 ++++++--- 3 files changed, 22 insertions(+), 36 deletions(-) -- 2.43.0