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 711E3275AEE; Fri, 13 Jun 2025 12:01:59 +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=1749816119; cv=none; b=NkmSBIj/8B8ZH5T5eI6t6ghVh1vfehg1qztPd2adiJA2/LenXxBIixjIZLqxFr2RsSGB5kiLftXe8ZUQZnzENUDGvNFmaS35PY2JlZeWzFkWZV5pyehckL+Jcs1uRCkcYCiCwIBn7pnjPLXyOPljfGe1FVKe7Zh3jofoaJGdxdg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749816119; c=relaxed/simple; bh=Gh2nhsaaPI2Pw0FhumH8XUZtTKmK6FkuDXlv3k8MGiQ=; h=Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References: Mime-Version:Content-Type; b=ofs078qyyhhhEapn6EICAkmQAXX9T7etu1HHa6Xu8NzuenhDOwkj1YG9bC6d+SZ4ZI2GkIQkE3p8RdNaM6Pqjmh3BZBaGoQbV2rihtWzulbr9kjzhdHFmhWCiPCF0vqBwbg0ETFdZwjAIbbGlakyPOl/sWtSDnGq3oFarAQz50I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=oU47ixca; 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="oU47ixca" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C2BF4C4CEE3; Fri, 13 Jun 2025 12:01:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1749816119; bh=Gh2nhsaaPI2Pw0FhumH8XUZtTKmK6FkuDXlv3k8MGiQ=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=oU47ixcaUvCGseubQ2LyG2gNbHEcJGf2TsMn8RrAl5J31EwbOBd2heAKBq3AWO7Mt 7MgRlYbcUkCW9KK33IOAu8bR4ZOAHFSmoyqJS8oVlELKXAXRfZ9lUP5vSE13ZVujzp Bd3T2SkS2XDIybg0O3U/4B53fxSL6nM0ZdpyZpjfJGas8qCxI5g+5s66iBIhZUF+RX FPZOdN7lPud3DVqabqG0mo1yyLcv1OkQJOZt9pQ7jhP1ME/+rbvoFGut7o6qQNgld0 A8PmzwGMw5q+WnqSoEQK52n7B3aGVQf/iUQbAMZhDyFpFt4KYGs+l40+SCm90QbuHE LI/03q26+xUfw== Date: Fri, 13 Jun 2025 21:01:54 +0900 From: Masami Hiramatsu (Google) To: Masami Hiramatsu (Google) Cc: Naresh Kamboju , Steven Rostedt , open list , Linux trace kernel , lkft-triage@lists.linaro.org, Stephen Rothwell , Arnd Bergmann , Dan Carpenter , Anders Roxell Subject: Re: next-20250605: Test regression: qemu-x86_64-compat mode ltp tracing Oops int3 kernel panic Message-Id: <20250613210154.dd5150d88f74673c1019a191@kernel.org> In-Reply-To: <20250613172753.3479f786d40c29ec7b51df0a@kernel.org> References: <20250609220934.2c3ed98ba8c624fc7cb45172@kernel.org> <20250610105337.68df01f4@gandalf.local.home> <20250613172753.3479f786d40c29ec7b51df0a@kernel.org> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Fri, 13 Jun 2025 17:27:53 +0900 Masami Hiramatsu (Google) wrote: > In do_int3(), if we hit a disappeared int3, it is evacuated after > all. This means kprobe_int3_handler() is hit, and call get_kprobe() > to find the corresponding kprobes. But, > > ffffffff8150a040 : > ffffffff8150a040: f3 0f 1e fa endbr64 > ffffffff8150a044: e8 07 b0 e2 ff call ffffffff81335050 <__fentry__> > ffffffff8150a049: 48 b8 eb 83 b5 80 46 movabs $0x61c8864680b583eb,%rax > ffffffff8150a050: 86 c8 61 BTW, I think this get_kprobe() should be "notrace" because this is called from int3 handler. Thanks, -- Masami Hiramatsu (Google)