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 62DB72253EA; Wed, 26 Feb 2025 17:46:54 +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=1740592015; cv=none; b=gO3ivZnfRd5o/BuV4Wnp1gfj8yXNDI7RBrSakWTu09b5EJjqN2Vt0u+E2D0p+Afb6cgZTlo5yE88XW7w91Ar0P5gaHJLtWkSsVYXAczBdJBA30q7+oPbjieLGYOcVI/CghWS4elJ9/x9JykiiXUL1b8hq7C2A1PKDHwVW9hJ0k4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740592015; c=relaxed/simple; bh=s28fAAtrCsEV8LWpIpCCPdesX6uySksYcloQ5mjso0M=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=iDr3tKOzhOQR4NhkkBccAsA+EnI3QTjRQ92NCQYdKAroErwedNnzkUbJspax2vizCOdQreKKbRj0te8+ce+2Xj+Is6q1xf5Kql1UCq6GLSF4xkh2eMKXak7FEUVKUKS5MsJeAfju67OtCpu3uOGFkJkYwhhr501OafAOYVP3TAg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 05DC4C4CED6; Wed, 26 Feb 2025 17:46:52 +0000 (UTC) Date: Wed, 26 Feb 2025 12:47:33 -0500 From: Steven Rostedt To: Kent Overstreet Cc: James Bottomley , Greg KH , Miguel Ojeda , Ventura Jack , "H. Peter Anvin" , Alice Ryhl , Linus Torvalds , Gary Guo , airlied@gmail.com, boqun.feng@gmail.com, david.laight.linux@gmail.com, hch@infradead.org, ksummit@lists.linux.dev, linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org, Ralf Jung , Josh Poimboeuf Subject: Re: C aggregate passing (Rust kernel policy) Message-ID: <20250226124733.10b4b5fa@gandalf.local.home> In-Reply-To: References: <2rrp3fmznibxyg3ocvsfasfnpwfp2skhf4x7ihrnvm72lemykf@lwp2jkdbwqgm> <2025022611-work-sandal-2759@gregkh> <16127450a24e9df8112a347fe5f6df9c9cca2926.camel@HansenPartnership.com> <20250226110033.53508cbf@gandalf.local.home> <9c443013493f8f380f9c4d51b1eeeb9d29b208a3.camel@HansenPartnership.com> <20250226115726.27530000@gandalf.local.home> X-Mailer: Claws Mail 3.20.0git84 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: ksummit@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Wed, 26 Feb 2025 12:41:30 -0500 Kent Overstreet wrote: > It's been awhile since I've looked at one, I've been just automatically > switching back to frame pointers for awhile, but - I never saw > inaccurate backtraces, just failure to generate a backtrace - if memory > serves. OK, maybe if the bug was bad enough, it couldn't get access to the ORC tables for some reason. Not having a backtrace on crash is not as bad as incorrect back traces, as the former is happening when the system is dieing and live kernel patching doesn't help with that. > > When things die down a bit more I might be able to switch back and see > if I get something reportable, I'm still in bug crunching mode :) Appreciate it. Thanks, -- Steve