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 CA82E2765DC for ; Sat, 25 Oct 2025 05:31:36 +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=1761370298; cv=none; b=oDu9W4u6XCJsj38jxB7AT6KbL+f50eOJ5SS53G8nt5B9/lFwel5wdVdRUd0DyW6eVkUvVNQvBOz3SYw+PBMyZ64e3kT/bCv06nPZ9YgLwwSuHUfy2dee8n+avz36hI1fWcCHEiYW1ppiAmZZVahc9W+d/9SPzgRawGXEGP4GLDU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761370298; c=relaxed/simple; bh=nbLQzAIKWPPzG1B4OQisWVGYbD9gq5/teEWcMvwVEFU=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=XrwyERC1s/OzdW6hmxdn6Nx15NY4dfTsHxduYl0rZfA8/XPc2tTb9JYE72veIefta0Dph3Ukn89eCJ8boz8E08d+NoPAZKMJXU1ibXv0HbrkRfGe9Y+mZV9cAnQZPJy7hECw5lQlqSsdjEpRMWBaf43V89Q+aVBzARPO88Jiy2Q= 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=TYB8E02n; 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="TYB8E02n" 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=1761370284; 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=4GUWRgdM6geYV5MVtICzRgkHX0YuWzP6CfL5chOqQt0=; b=TYB8E02nS/qw2QTN6gXyuTSGymgZyX9zRo91/nJx9XA5T4Shg5xqcndeS6j4HWKXTIaPJX RXqdHXE+ktko30svX/4SZR7p2QC9QMqdDqNsWm6OhB5qLC6rk6GtXHhpEcucxEzRzb3z4L QEaTJxv1gp0UTTyaTG3fREXbQ9CR6V0= From: KaFai Wan To: ast@kernel.org, daniel@iogearbox.net, john.fastabend@gmail.com, andrii@kernel.org, martin.lau@linux.dev, eddyz87@gmail.com, song@kernel.org, yonghong.song@linux.dev, kpsingh@kernel.org, sdf@fomichev.me, haoluo@google.com, jolsa@kernel.org, shuah@kernel.org, paul.chaignon@gmail.com, m.shachnai@gmail.com, harishankar.vishwanathan@gmail.com, colin.i.king@gmail.com, luis.gerhorst@fau.de, bpf@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org Cc: KaFai Wan Subject: [PATCH bpf-next v2 0/2] bpf: Skip bounds adjustment for conditional jumps on same register Date: Sat, 25 Oct 2025 13:30:15 +0800 Message-ID: <20251025053017.2308823-1-kafai.wan@linux.dev> 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 This small patchset is about avoid verifier bug warning when conditional jumps on same register when the register holds a scalar with range. v2: - Enhance is_branch_taken() and is_scalar_branch_taken() to handle branch direction computation for same register. (Eduard and Alexei) - Update the selftest. v1: https://lore.kernel.org/bpf/20251022164457.1203756-1-kafai.wan@linux.dev/ --- KaFai Wan (2): bpf: Skip bounds adjustment for conditional jumps on same register selftests/bpf: Add test for BPF_JGT on same register kernel/bpf/verifier.c | 32 +++++++++++++++++++ .../selftests/bpf/progs/verifier_bounds.c | 18 +++++++++++ 2 files changed, 50 insertions(+) -- 2.43.0