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 B2C7935979; Mon, 3 Nov 2025 22:09:34 +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=1762207774; cv=none; b=N414xR4JehTaOujxUhshozUBQOF23DpPHsv0UbKcJa6O3RJ27dhGo39+b6CQarWG+L39f2qyNRoI5/FhcINIM6UA6tgKX/5jy4xxY89fJEguRDdLPTZhZ1mS1uoY5s/YlKIsgYm4bK8qKzHVJApHeZ/0xZ0+aZnZAyD1PgPX77Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762207774; c=relaxed/simple; bh=cToBP15321gy7MkEptb4GyQF51qomz/Aqlu5YiC0HIw=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=X478QIvAnjJq7nxAg9qxeQqu/p7EjfJDm7sZaGvvkujfzF9pQs0dlmgP8+4NgkTVLUir2lQgmfzceS0+AUIpRlLyFAsIdmwUQ1tNDcbWDGPySvnGSaMtb5u9Q4ujBxd6pSCCPWCUeJzP89hLLD8IJ82I9ioxcsbuZG6ai5SNu8g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=U1KiEJAK; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="U1KiEJAK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F23B4C116B1; Mon, 3 Nov 2025 22:09:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1762207774; bh=cToBP15321gy7MkEptb4GyQF51qomz/Aqlu5YiC0HIw=; h=From:To:Cc:Subject:Date:From; b=U1KiEJAKlnH4WUnbeWMmukTX8SFMad8yf1mPSaUSE94p/hPIiJvH5YXIj9D1uow6/ +FI7vCkQCzgBtvxRGHQSGdli1vMt3hpVLAJEkb3XXSE6CWOCmxYnTMd77eztEsOZMe YBwdCB2lXDz3UN4GGr8qmeTq+r6EqxToQ+5lErhGVQYf+0jrJfOLgH1uw/Ts6F3h5a JyEOS4DZB/Uass1VgkpZmwc30ih2O6rfcaXhXBCvpz+RGRHsPmRJEmVCwZulWO2QBR xL6FbUNAonljuL64q/MTvCV+jo6jxjqCRG/er4GaeMrJGmarbwj7/Yx5Bhl4u5LiLm /DITgd9ERIkmA== From: Jiri Olsa To: Masami Hiramatsu , Steven Rostedt , Josh Poimboeuf Cc: Peter Zijlstra , bpf@vger.kernel.org, linux-trace-kernel@vger.kernel.org, x86@kernel.org, Yonghong Song , Song Liu , Andrii Nakryiko Subject: [PATCHv2 0/4] x86/fgraph,bpf: Fix ORC stack unwind from return probe Date: Mon, 3 Nov 2025 23:09:20 +0100 Message-ID: <20251103220924.36371-1-jolsa@kernel.org> X-Mailer: git-send-email 2.51.1 Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit hi, sending fix for ORC stack unwind issue reported in here [1], where the ORC unwinder won't go pass the return_to_handler function and we get no stacktrace. Sending fix for that together with unrelated stacktrace fix (patch 1), so the attached test can work properly. It's based on: https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git probes/for-next v1: https://lore.kernel.org/bpf/20251027131354.1984006-1-jolsa@kernel.org/ v2 changes: - added ack for patch 2 [Masami] - added test for raw tp unwind thanks, jirka [1] https://lore.kernel.org/bpf/aObSyt3qOnS_BMcy@krava/ --- Jiri Olsa (4): Revert "perf/x86: Always store regs->ip in perf_callchain_kernel()" x86/fgraph,bpf: Fix stack ORC unwind from kprobe_multi return probe selftests/bpf: Add stacktrace ips test for kprobe_multi/kretprobe_multi selftests/bpf: Add stacktrace ips test for raw_tp arch/x86/events/core.c | 10 +++---- arch/x86/include/asm/ftrace.h | 5 ++++ arch/x86/kernel/ftrace_64.S | 8 +++++- include/linux/ftrace.h | 10 ++++++- tools/testing/selftests/bpf/prog_tests/stacktrace_ips.c | 150 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ tools/testing/selftests/bpf/progs/stacktrace_ips.c | 49 +++++++++++++++++++++++++++++++ tools/testing/selftests/bpf/test_kmods/bpf_testmod.c | 26 +++++++++++++++++ 7 files changed, 251 insertions(+), 7 deletions(-) create mode 100644 tools/testing/selftests/bpf/prog_tests/stacktrace_ips.c create mode 100644 tools/testing/selftests/bpf/progs/stacktrace_ips.c