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 D8DBF1876 for ; Thu, 26 Dec 2024 15:51:24 +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=1735228284; cv=none; b=MX15bViptKdsNrRg6vJxg/324LnKwlwuCS6hdKIDnTr8VgM+Le9JCxGhF9Sgd6HcyKpN/pydXXBmsEt8Yw7Om3ISHz9UChdp3WVOeP0ZGQNQQt6LH8/HyBn+hrNmDiLUNAck2DhIfwaVDRdzh44kQgvTQX6lfxP+i/RYWwosN48= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735228284; c=relaxed/simple; bh=BM5I1T8tBr9/OVyBQAgRb8HlVRYgiLJlNRBGvI7mznE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=IiDVx1kDNQ6qbIWai6nYp+srkmG0QlWhTlk44+uEio82IaJZK7QdwjaleRGtKFC4amXPsQ0VqcT91Z1a4uXj0oZP5RR33typeDgoZ671pi80zAPJ/w/Gt/lSwGk892Sr9A67UHHl/hP0/tSTgVb+79G8ylSTlMiXdFpXxnvDg88= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=idDxC0TG; 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="idDxC0TG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B5663C4CED1; Thu, 26 Dec 2024 15:51:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1735228284; bh=BM5I1T8tBr9/OVyBQAgRb8HlVRYgiLJlNRBGvI7mznE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=idDxC0TGhcelPgsLzCxu3eNJxgTvzYvcezgBxnvBEurNCGB8RYTfJHSLm1FWkr5VC 9pABC8aEvpXzrd94hXLtjcLEzVENe7Doy5SB3lU3URzAgD82tu9j5RovGIduiw29R5 pUnyyZGKYTa9HTXpZ2CYlaEzpOLlr1324mV8QGubQ4lfb3sghXMFYQP6eTKwM4zLHO t078yNy3Tbd47n7NT12LSaxeGrFZWegTU0X3CW6EIAF/n9lVYAYvgbD3SkBeqP0PL5 JPiyAyORi/RXAfjLNuglEqbdeW3LXDaTGtbWKUJB0eozyKfCKZrY6TbRVXsqiD+s4c eYl3rH2Bxe/vQ== Date: Thu, 26 Dec 2024 12:51:20 -0300 From: Arnaldo Carvalho de Melo To: James Clark Cc: Christophe Leroy , "linux-perf-users@vger.kernel.org" , Peter Zijlstra , Ingo Molnar , Namhyung Kim Subject: Re: Perf doesn't display kernel symbols anymore (bisected commit 659ad3492b91 ("perf maps: Switch from rbtree to lazily sorted array for addresses")) Message-ID: References: <719a89a5-8dff-48a0-ba8f-802c740a00a6@csgroup.eu> <53f3abe5-dd22-4a1a-82e6-bc88e91d1869@linaro.org> Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <53f3abe5-dd22-4a1a-82e6-bc88e91d1869@linaro.org> On Tue, Dec 17, 2024 at 02:18:07PM +0000, James Clark wrote: > On 16/12/2024 7:01 am, Christophe Leroy wrote: > > I noticed with 6.12 LTS Kernel that perf top and perf record/report > > don't display kernel symbols anymore, instead it displays the raw > > address with [unknown] as object. > > After bisect I see that the problem appears with commit 659ad3492b91 > > ("perf maps: Switch from rbtree to lazily sorted array for addresses"). > You might want to try applying 0b90dfda222e3 as it claims to fix this > commit. I doubt that will fix your issue but it's worth being sure. > There was also another fix recently that could be related: 23c44f6c83 > Did you try the perf-tools-next branch? Maybe something that's already fixed > needs to be backported. Right, I tried reproducing this on perf-tools-next and couldn't, so please test it there. Thanks, - Arnaldo