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 0C9C3250BF2; Mon, 26 Jan 2026 21:18:48 +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=1769462329; cv=none; b=jBKGjEYIvxuaZPkQNXcHc/LSTdcvXTVEXcbsirHdlvpIjnIyOoDJIqr3d3CDG6o5va1DdQbM4kk1zzC3AyDLLNETxQUSNW8noRcYeXAYcbp/dS05S9+/ER5/9bS0lI44/oU6tCG0irKY15f8zPgmMOM8AwGLKfLhNSLek5mFh28= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769462329; c=relaxed/simple; bh=gqk8nOTGoaFO7+CQHiIr07UBbE0GctG9clfjuRMHMd8=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=hRVvyl6RDinv3dd3kKKYYL1TQFbf48TnI48Nwqxmpn2Zqa73u4Tmr17JETgfG5NZVPgvmwgZTpCVQGkoACRC/n89KoaX3bmPeORxrbWkjAQ4l2CmKVntpbSSdyg7mMLdgb0JfygpJ/3WkIBMvW6qpFFBShZ3aAEYyrBv1bZZa9o= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Gn86sPoa; 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="Gn86sPoa" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 16273C116C6; Mon, 26 Jan 2026 21:18:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1769462328; bh=gqk8nOTGoaFO7+CQHiIr07UBbE0GctG9clfjuRMHMd8=; h=From:To:Cc:Subject:Date:From; b=Gn86sPoabPR5G2XKLXK7Nm/JQFYrZEH/e+fJP5y8KFpDFex6PQEjbNgYUUgDHzCYA Vf8Cx0iMJA1X6frnJw0EZY2cbbcyPIMCDdV7t9EWBqpzBDBGep9BZXkkSj0sClf+nc cfkRONAqQiFYmx0rjOGYjaLed6DkdFTHbM0xV+5SJQXsuERge6ia/bpvm+3wtOADu5 N4K9hmjDF2YYcOvEvgAO0W8dEVWIy65wGDyJ6qDjvxOQrzq/R4Bn4lJfC1oROhQjsv a/Kg8ABG+1cI4/hjr4eJBTt5W6ZZL2S2tn0thqggTBJosKoPsCF0T5ihceHgJUSbEi lSsdXjxaWO3CQ== 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 , Mahe Tardy Subject: [PATCHv2 bpf-next 0/6] x86/fgraph,bpf: Fix ORC stack unwind from kprobe_multi Date: Mon, 26 Jan 2026 22:18:31 +0100 Message-ID: <20260126211837.472802-1-jolsa@kernel.org> X-Mailer: git-send-email 2.52.0 Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit hi, Mahe reported missing function from stack trace on top of kprobe multi program. It turned out the latest fix [1] needs some more fixing. v2 changes: - keep the unwind same as for kprobes, attached function is part of entry probe stacktrace, not kretprobe [Steven] - several change in trigger bench [Andrii] - added selftests for standard kprobes and fentry/fexit probes [Andrii] Note I'll try to add similar stacktrace adjustment for fentry/fexit in separate patchset to not complicate this change. thanks, jirka [1] https://lore.kernel.org/bpf/20251104215405.168643-1-jolsa@kernel.org/ --- Jiri Olsa (6): x86/fgraph: Fix return_to_handler regs.rsp value x86/fgraph,bpf: Switch kprobe_multi program stack unwind to hw_regs path selftests/bpf: Fix kprobe multi stacktrace_ips test selftests/bpf: Add stacktrace ips test for kprobe/kretprobe selftests/bpf: Add stacktrace ips test for fentry/fexit selftests/bpf: Allow to benchmark trigger with stacktrace arch/x86/include/asm/ftrace.h | 2 +- arch/x86/kernel/ftrace_64.S | 5 +++- tools/testing/selftests/bpf/bench.c | 4 ++++ tools/testing/selftests/bpf/bench.h | 1 + tools/testing/selftests/bpf/benchs/bench_trigger.c | 1 + tools/testing/selftests/bpf/prog_tests/stacktrace_ips.c | 120 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---- tools/testing/selftests/bpf/progs/stacktrace_ips.c | 27 ++++++++++++++++++++++ tools/testing/selftests/bpf/progs/trigger_bench.c | 46 +++++++++++++++++++++++++++++-------- 8 files changed, 190 insertions(+), 16 deletions(-)