From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from matoro.tk (matoro.tk [104.188.251.153]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 71B98181D15 for ; Wed, 29 May 2024 16:09:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=104.188.251.153 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716998965; cv=none; b=GPpXyyXF9qg6LmnCkZavhEH4KWjpdiiVY7LzUrE+NOpQnwA9stG9F5XrMvFtf6UJ2mEUdwJepklPizaSbK+LdM9TIc24yhj2tK7hcU//5FrBOjFfAGmmYerzReZGB620rNUM8pRkWhW8EqZyW3hIxooQEYplA4jjDU28rrQBa0E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716998965; c=relaxed/simple; bh=MrZJN7ZJUM1waj9liYWT3LNP9CDiiAQNqhu3XRieY7A=; h=MIME-Version:Date:From:To:Cc:Subject:In-Reply-To:References: Message-ID:Content-Type; b=QZPocnSifcVAeqDLZU1x5OTq85R5rgWHLcOnIp+AZzqpKf0dEYcWQr9Fl7Vx0pwqBSfzIDb6DBVphqROwvdLN3kj+yutsMgkBvzfl/yP6RYhgB/BDsIvoLC6rehiao+/3Wm5dCrGO7BTbuF+bZqM+MfFgpb9vr9dEWZAzdIeG5w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=matoro.tk; spf=pass smtp.mailfrom=matoro.tk; dkim=pass (4096-bit key) header.d=matoro.tk header.i=@matoro.tk header.b=BtFsH4+n; arc=none smtp.client-ip=104.188.251.153 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=matoro.tk Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=matoro.tk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (4096-bit key) header.d=matoro.tk header.i=@matoro.tk header.b="BtFsH4+n" DKIM-Signature: a=rsa-sha256; bh=QfCDefa4KHj4wiA/G0pNDZvRWiEgK5G+8dDiguL4d7A=; c=relaxed/relaxed; d=matoro.tk; h=Subject:Subject:Sender:To:To:Cc:Cc:From:From:Date:Date:MIME-Version:MIME-Version:Content-Type:Content-Type:Content-Transfer-Encoding:Content-Transfer-Encoding:Reply-To:In-Reply-To:In-Reply-To:Message-Id:Message-Id:References:References:Autocrypt:Openpgp; i=@matoro.tk; s=20240416; t=1716998040; v=1; x=1717430040; b=BtFsH4+nxSvhWIEbboeBOv0CIDTMLcfSiqJCcH93NGJM4Xz+ai1b64tk9V6LMvsMRCMteiV7 K6iKGPrOA4HZG7cY7WWLfZS3F+QIVvHJGeTCGQhzL9awYOMIXb8DGLxNNmBGCFh2y6Q5BZyfTgl Rg8AKuEIYAZV0dn4mHyYrbnPGm8s/kInwt+4QcBTNEU6xeGZ+nuz+RU9HmKA3cBIv/hSkbkatx7 kZezt4F9aTfY4DkgLPaMWAMoJxirT8selw9WbL9H2IhFXhmEOdPqZn93gFXP9iBTOdUXnMH+buH HpsXX3Mrl8ZkzZCKhDi9EIuhy6n27EOALgCrUTxFhGO2wa1txPVASPPuVVuDB0NckH0bOjZg5xF 0bFYKDwGdekh1EEwA4QFqYSzQ8dziUnIDWdAc+E1EhRFRo3xM5Rjfapll+rPOyOkodp8zt3h4Kc tlhHJ3rZhv4ERe3wDLhrvq9vGHjz95W34NXk/CjMpMn/Zr04ouZZF31z2keK4yzOgh4PEsAOQgL WSonsE/lYlu8LFI59top+Q5na5lzDySiPolJyVPvkjkHz2IeorKeVZAfSdV7nFteCbqzbNUO65Q NwWo3TzzFfKiMuxd0EEvULeZrAkGXZQC3hpVJJWpM72QIDXrq1zi+nRzZ3qjd9CbZaxVCJPDZSg Nz6RaAIsHrI= Received: by matoro.tk (envelope-sender ) with ESMTPS id f8be815a; Wed, 29 May 2024 11:54:00 -0400 Precedence: bulk X-Mailing-List: linux-parisc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Date: Wed, 29 May 2024 11:54:00 -0400 From: matoro To: John David Anglin Cc: Vidra.Jonas@seznam.cz, linux-parisc@vger.kernel.org, John David Anglin , Helge Deller Subject: Re: [PATCH] parisc: Try to fix random segmentation faults in package builds In-Reply-To: <88756923-4c3c-41bf-97a8-aab25bc93644@bell.net> References: <91563ff7-349b-4815-bcfe-99f8f34b0b16@bell.net> <34fdf2250fe166372a15d74d28adc8d2@matoro.tk> <88756923-4c3c-41bf-97a8-aab25bc93644@bell.net> Message-ID: <28cea8aa7cce7c56bbb8f88067c3f3ba@matoro.tk> X-Sender: matoro_mailinglist_kernel@matoro.tk Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 2024-05-09 13:10, John David Anglin wrote: > On 2024-05-08 4:52 p.m., John David Anglin wrote: >>> with no accompanying stack trace and then the BMC would restart the whole >>> machine automatically.  These were infrequent enough that the segfaults >>> were the bigger problem, but after applying this patch on top of 6.8, this >>> changed the dynamic.  It seems to occur during builds with varying I/O >>> loads.  For example, I was able to build gcc fine, with no segfaults, but >>> I was unable to build perl, a much smaller build, without crashing the >>> machine. I did not observe any segfaults over the day or 2 I ran this >>> patch, but that's not an unheard-of stretch of >>> time even without it, and I am being forced to revert because of the panics. >> Looks like there is a problem with 6.8.  I'll do some testing with it. > So far, I haven't seen any panics with 6.8.9 but I have seen some random > segmentation faults > in the gcc testsuite.  I looked at one ld fault in some detail.  18 > contiguous words in the  elf_link_hash_entry > struct were zeroed starting with the last word in the bfd_link_hash_entry > struct causing the fault. > The section pointer was zeroed. > > 18 words is a rather strange number of words to corrupt and corruption > doesn't seem related > to object structure.  In any case, it is not page related. > > It's really hard to tell how this happens.  The corrupt object was at a > slightly different location > than it is when ld is run under gdb.  Can't duplicate in gdb. > > Dave Dave, not sure how much testing you have done with current mainline kernels, but I've had to temporarily give up on 6.8 and 6.9 for now, as most heavy builds quickly hit that kernel panic. 6.6 does not seem to have the problem though. The patch from this thread does not seem to have made a difference one way or the other w.r.t. segfaults.