From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from fhigh-b2-smtp.messagingengine.com (fhigh-b2-smtp.messagingengine.com [202.12.124.153]) (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 5AB40238E23 for ; Wed, 11 Dec 2024 12:30:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=202.12.124.153 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733920215; cv=none; b=I+rzW5K06chRwlThgmkXqoBYzR3tbOfCMjzN8sMQzfiAAynCt8nirOSbiA+SRhwoI/2RsUelcVftCtQIcsF5OmyALwA9UgG42IAQ8XlGHJnkRGbjeaWJwq/ty0KoXv1479WYRHHAwRDxkeJo9Ll556G0Ergyvrtl9MGcYWLTKAw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733920215; c=relaxed/simple; bh=CP6rrfdOFvUK+MrdYq2z1Hpdj973qHBtG5l9/5OKT00=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=vDtDvKFd0IcQjOUq+A+J8eTPApl54agM4WPy2MLvwua3Zzv+64N3uTe1IOKpa7rD3yTRMlVJ5XBF9JOOoIc8WhkJDlhc3VRMidXE+KwsJni483rezh0tLkfeicqEl2gz5/+f3c+NUbzGiAcOcc0BGxGaSi4XdgpfNUlu5nwnLMA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=invisiblethingslab.com; spf=pass smtp.mailfrom=invisiblethingslab.com; dkim=pass (2048-bit key) header.d=invisiblethingslab.com header.i=@invisiblethingslab.com header.b=I8Eya5tw; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b=wLju/yEA; arc=none smtp.client-ip=202.12.124.153 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=invisiblethingslab.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=invisiblethingslab.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=invisiblethingslab.com header.i=@invisiblethingslab.com header.b="I8Eya5tw"; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="wLju/yEA" Received: from phl-compute-06.internal (phl-compute-06.phl.internal [10.202.2.46]) by mailfhigh.stl.internal (Postfix) with ESMTP id 0272C2540260; Wed, 11 Dec 2024 07:30:11 -0500 (EST) Received: from phl-mailfrontend-01 ([10.202.2.162]) by phl-compute-06.internal (MEProxy); Wed, 11 Dec 2024 07:30:12 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= invisiblethingslab.com; h=cc:cc:content-type:content-type:date :date:from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:subject:subject:to:to; s=fm1; t=1733920211; x=1734006611; bh=4bUVCNxlLLsfq6OFY06A5OLQ0L1wV01UZdhndtveAMU=; b= I8Eya5twAQM5obhHH7eChwe9cAz2crqW7dupEat7/fDVBRBhKgA2ris/oAlhAwTg hA0oDcr5C/zp2YE+xNbNiPS8k8uMnJ8A7gZpiOgFNwMm9VdNRB+LrpYCZv8PQkbQ OEUetmNBlLwQ5NGKd5s77RYtKaGAH4w3vppfrq5HjiWJA/rTMz8I/Vm6te2YZtbf EPq490v8RUskIQPmm1NLRZ7fTIjKkC+iHLLxYleMGTFrLwa+jYKQZkHHd05sh5MS BhMe/a4uDhzg93xqWjQPjxAIKNPguTXtMGzeCqDS9NUlezdo0XYFBy/SuTC5K/dh 5ll482V9Zt3KgLULvp+lLg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-type:content-type:date:date :feedback-id:feedback-id:from:from:in-reply-to:in-reply-to :message-id:mime-version:references:reply-to:subject:subject:to :to:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm1; t= 1733920211; x=1734006611; bh=4bUVCNxlLLsfq6OFY06A5OLQ0L1wV01UZdh ndtveAMU=; b=wLju/yEA8UQY2xaIngAa2kBrRyRCyr7U+FBTlWZ21s3lb20kn/4 QTliJTUrnYtSj0oNjXXgLq8LDCR8JajtMKPVvuZpX2TUrB3vCGlGDyFawQvaDBvw ZbnMgsbbW2dGT6ZiZtJa2jZ/vNoQO1kruOgQh+A8xOtJhWprVjAx8TZ8pdSaRROo SqonOm+eMHyhMCSiKbVKWVesGMeUmWw3Cj6PNUCxZhzeKxzOSvwSuJG0KSLrjv3n Xds4k9k/kO7j6mUxV0sM9FwPyayrDPvvKzJRfb9Otjq5DuAGYuKMozlrIqyd85B0 QhDWbH1ZZOK3k+oE6IjYbmlksppmIrYbbwg== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeefuddrkedtgdegtdcutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpggftfghnshhusghstghrihgsvgdpuffr tefokffrpgfnqfghnecuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnth hsucdlqddutddtmdenucfjughrpeffhffvvefukfhfgggtuggjsehgtderredttdejnecu hfhrohhmpeforghrvghkucforghrtgiihihkohifshhkihdqifpkrhgvtghkihcuoehmrg hrmhgrrhgvkhesihhnvhhishhisghlvghthhhinhhgshhlrggsrdgtohhmqeenucggtffr rghtthgvrhhnpefgudelteefvefhfeehieetleeihfejhfeludevteetkeevtedtvdegue etfeejudenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhm pehmrghrmhgrrhgvkhesihhnvhhishhisghlvghthhhinhhgshhlrggsrdgtohhmpdhnsg gprhgtphhtthhopeejpdhmohguvgepshhmthhpohhuthdprhgtphhtthhopegrrhgusges khgvrhhnvghlrdhorhhgpdhrtghpthhtohepjhhgrhhoshhssehsuhhsvgdrtghomhdprh gtphhtthhopehjrghnughrhihukhesghhmrghilhdrtghomhdprhgtphhtthhopehsshht rggsvghllhhinhhisehkvghrnhgvlhdrohhrghdprhgtphhtthhopeholhgvkhhsrghnug hrpghthihshhgthhgvnhhkohesvghprghmrdgtohhmpdhrtghpthhtoheprhgvghhrvghs shhiohhnsheslhhishhtshdrlhhinhhugidruggvvhdprhgtphhtthhopeigvghnqdguvg hvvghlsehlihhsthhsrdigvghnphhrohhjvggtthdrohhrgh X-ME-Proxy: Feedback-ID: i1568416f:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Wed, 11 Dec 2024 07:30:10 -0500 (EST) Date: Wed, 11 Dec 2024 13:30:08 +0100 From: Marek =?utf-8?Q?Marczykowski-G=C3=B3recki?= To: Ard Biesheuvel Cc: =?utf-8?B?SsO8cmdlbiBHcm/Dnw==?= , Jason Andryuk , Stefano Stabellini , Oleksandr Tyshchenko , regressions@lists.linux.dev, xen-devel Subject: Re: [REGRESSION] Linux 6.6.64 crashes when booting as PVH domU Message-ID: References: Precedence: bulk X-Mailing-List: regressions@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="/VG+ezqUWUhYwfd+" Content-Disposition: inline In-Reply-To: --/VG+ezqUWUhYwfd+ Content-Type: text/plain; protected-headers=v1; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Date: Wed, 11 Dec 2024 13:30:08 +0100 From: Marek =?utf-8?Q?Marczykowski-G=C3=B3recki?= To: Ard Biesheuvel Cc: =?utf-8?B?SsO8cmdlbiBHcm/Dnw==?= , Jason Andryuk , Stefano Stabellini , Oleksandr Tyshchenko , regressions@lists.linux.dev, xen-devel Subject: Re: [REGRESSION] Linux 6.6.64 crashes when booting as PVH domU On Wed, Dec 11, 2024 at 01:24:08PM +0100, Ard Biesheuvel wrote: > On Wed, 11 Dec 2024 at 12:53, J=C3=BCrgen Gro=C3=9F wro= te: > > > > Jason, Ard, > > > > I guess there are some prereq patches missing in stable 6.6.y branch? > > > > > > Juergen > > > > On 11.12.24 12:41, Marek Marczykowski-G=C3=B3recki wrote: > > > Hi, > > > > > > With Linux 6.6.64 I get the following crash on domU boot: > > > > > > (XEN) d5v0 Triple fault - invoking HVM shutdown action 1 > > > (XEN) *** Dumping Dom5 vcpu#0 state: *** > > > (XEN) ----[ Xen-4.19.0 x86_64 debug=3Dn Tainted: M ]---- > > > (XEN) CPU: 4 > > > (XEN) RIP: 0008:[] > > > (XEN) RFLAGS: 0000000000010086 CONTEXT: hvm guest (d5v0) > > > (XEN) rax: ffffffff82b64050 rbx: ffffffffffe00000 rcx: 00000000c0= 000101 > > > (XEN) rdx: 0000000000000000 rsi: 0000000003a00038 rdi: 0000000002= a9bc98 > > > (XEN) rbp: 0000000000000000 rsp: 0000000002aa0ce8 r8: 0000000000= 000000 > > > (XEN) r9: 0000000000000000 r10: 0000000000000000 r11: 0000000000= 000000 > > > (XEN) r12: 0000000000000000 r13: 0000000000000000 r14: 0000000000= 000000 > > > (XEN) r15: 0000000000000000 cr0: 0000000080000011 cr4: 0000000000= 000020 > > > (XEN) cr3: 0000000002022000 cr2: 0000000000000000 > > > (XEN) fsb: 0000000000000000 gsb: 0000000002a9ccc0 gss: 0000000000= 000000 > > > (XEN) ds: 0010 es: 0010 fs: 0000 gs: 0000 ss: 0010 cs: 0008 > > > > > > Linux 6.6.63 works fine. > > > > > > Looking at the changes, I suspect one of those: > > > > > > 83d123e27623 x86/pvh: Call C code via the kernel virtual mapping > > > f662b4a69e1d x86/pvh: Set phys_base when calling xen_prepare_pvh= () > > > >=20 > The second patch shouldn't have been backported. It is unnecessary, > given that in the old situation, the kernel image needs to be loaded > at a fixed address. And it assumes that %rbp is set to the physical > load offset, but those patches were not backported. It has this tag: Stable-dep-of: e8fbc0d9cab6 ("x86/pvh: Call C code via the kernel virtu= al mapping") Does it mean neither of them should be backported? But then, the e8fbc0d9cab6 has "Fixes:" tag (pointing at very old commit). --=20 Best Regards, Marek Marczykowski-G=C3=B3recki Invisible Things Lab --/VG+ezqUWUhYwfd+ Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEhrpukzGPukRmQqkK24/THMrX1ywFAmdZhdEACgkQ24/THMrX 1yyjMQf9FzYK4Yw9Mm1IB6080FxLcOdQKmLoy8zrgu/4DPqQr+eN8jte4FbvsL18 ilp4g8VystkEOyUOA7M6TI54ottRMRdM3KPQ2Cny9LV6SPsq5PKL3DFl5pYaAbgM BgxJye/H36pS3A7D++w88A37dd7Orc6S9r4xo/VTskL9zAx3eqTeBclA5wazsSJ+ wjOOwGxeDrfrHL+gWXL7P4lEXDSRYZsEa7W90DNqnBuKM0TFSinUeuyP8urI2yDZ 3a81wUDPuLaj3UijeFkp8lGlpBciUzvslgJWNSbp/pbZWoZdwQeZzV3yQIfZAxbw 5CAEDyZinCheMVPTB/jTfKdBb+l7RQ== =OW2f -----END PGP SIGNATURE----- --/VG+ezqUWUhYwfd+--