From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) (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 2E00D213E61; Tue, 10 Jun 2025 14:52:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=216.40.44.12 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749567134; cv=none; b=LR2PDiQSBv8Fi3AgJUCgfqrrFvZwD2Tq7/b+iCt1RvNblZh8qocs3WwXpP0FN/dCJ5U0UovmaebsqkqtiYr5uCUG1Svgx0MM9x2vxnjIASUbJGErUexv9iXtUCCxefNcZKDaV2EMrZDZHwPxE5YCioXShmIO2bMHm/legAq494I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749567134; c=relaxed/simple; bh=UNSil0iwsJ12f0l4AtnUUBX+i+/RiXhRKBJWw+Wj+Ko=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=jUlzYU94UZRsCxxqM7hkP0vMquTRCe/ykD5c5wkDwEA4SYTjT6+9stG0Bl0CgEofeGfJcJ3syppwF2kPr+iGjTLTePvj9R1in7UN2tkI+BxXmEnqBxFpnt54bdYBWZXPOris6KkwmoQF5KnYCJcTiZoDRcQxFyxbudDMvM9/bvY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=goodmis.org; spf=pass smtp.mailfrom=goodmis.org; arc=none smtp.client-ip=216.40.44.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=goodmis.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=goodmis.org Received: from omf10.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 4DDF9100AA1; Tue, 10 Jun 2025 14:52:09 +0000 (UTC) Received: from [HIDDEN] (Authenticated sender: rostedt@goodmis.org) by omf10.hostedemail.com (Postfix) with ESMTPA id 338F830; Tue, 10 Jun 2025 14:52:07 +0000 (UTC) Date: Tue, 10 Jun 2025 10:53:37 -0400 From: Steven Rostedt To: Naresh Kamboju Cc: Masami Hiramatsu , 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: <20250610105337.68df01f4@gandalf.local.home> In-Reply-To: References: <20250609220934.2c3ed98ba8c624fc7cb45172@kernel.org> X-Mailer: Claws Mail 3.20.0git84 (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 X-Rspamd-Queue-Id: 338F830 X-Rspamd-Server: rspamout08 X-Stat-Signature: pc43qwbd4quy5x73f9s5jri7am1dmyjq X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Session-ID: U2FsdGVkX19Dnf2VYujNfH1wJviwfo0gmVI5+MFRJlA= X-HE-Tag: 1749567127-244065 X-HE-Meta: U2FsdGVkX18WV4YDMOTDd3jHU7xsTn8XeCFWrkA2KWSkow9aroaCLRXmF/aegd1uL4g+QqTr4y75aZBH3M3hP3q7Umz/ezIhwOc/8mgTkR+7VqjrTnE4umG38ToQ7T3jYt2GrBmSUtYl7Ie/Fva3bjbuKg0dxV3s4ce8QpqV2dMkQ1dYVUz8bPZSOBfF/t1KNxhgSb/qPsGP1SogFNkZToGkAQwOKwUgJIoFVyZSCzy97aj609meYasRkNcpTwpLVh+E7ICNEoiuL2Qr3eZzftysoxquaOl33WXFfPIhM5PrGk2SX+NIZHWZILGQ9j2FoU37dOMMKBO5387gtNCz1+7TCkEDBMNDaRf3B3r3MhNLwn+YgjHdVM/kaKGbWrk5 On Tue, 10 Jun 2025 18:50:05 +0530 Naresh Kamboju wrote: > > Is this bug reproducible easier recently? > > Yes. It is easy to reproduce. Can you test before and after this commit: 4334336e769b ("x86/alternatives: Improve code-patching scalability by removing false sharing in poke_int3_handler()") I think that may be the culprit. Even if Masami's patches work, I want to know what exactly caused it. -- Steve