Linux-parisc archive on lore.kernel.org
 help / color / Atom feed
From: Ira Weiny <ira.weiny@intel.com>
To: Guenter Roeck <linux@roeck-us.net>
Cc: linux-kernel@vger.kernel.org,
	Andrew Morton <akpm@linux-foundation.org>,
	Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
	"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
	Helge Deller <deller@gmx.de>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	"David S. Miller" <davem@davemloft.net>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Andy Lutomirski <luto@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Chris Zankel <chris@zankel.net>,
	Max Filippov <jcmvbkbc@gmail.com>,
	Dan Williams <dan.j.williams@intel.com>,
	linux-snps-arc@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org,
	linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org,
	linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org,
	linux-xtensa@linux-xtensa.org, dri-devel@lists.freedesktop.org,
	Christian Koenig <christian.koenig@amd.com>,
	Al Viro <viro@zeniv.linux.org.uk>, Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH] arch/{mips,sparc,microblaze,powerpc}: Don't enable pagefault/preempt twice
Date: Thu, 21 May 2020 10:42:50 -0700
Message-ID: <20200521174250.GB176262@iweiny-DESK2.sc.intel.com> (raw)
In-Reply-To: <d86dba19-4f4b-061e-a2c7-4f037e9e2de2@roeck-us.net>

On Thu, May 21, 2020 at 09:05:41AM -0700, Guenter Roeck wrote:
> On 5/19/20 10:13 PM, Ira Weiny wrote:
> > On Tue, May 19, 2020 at 12:42:15PM -0700, Guenter Roeck wrote:
> >> On Tue, May 19, 2020 at 11:40:32AM -0700, Ira Weiny wrote:
> >>> On Tue, May 19, 2020 at 09:54:22AM -0700, Guenter Roeck wrote:
> >>>> On Mon, May 18, 2020 at 11:48:43AM -0700, ira.weiny@intel.com wrote:
> >>>>> From: Ira Weiny <ira.weiny@intel.com>
> >>>>>
> >>>>> The kunmap_atomic clean up failed to remove one set of pagefault/preempt
> >>>>> enables when vaddr is not in the fixmap.
> >>>>>
> >>>>> Fixes: bee2128a09e6 ("arch/kunmap_atomic: consolidate duplicate code")
> >>>>> Signed-off-by: Ira Weiny <ira.weiny@intel.com>
> >>>>
> >>>> microblazeel works with this patch,
> >>>
> >>> Awesome...  Andrew in my rush yesterday I should have put a reported by on the
> >>> patch for Guenter as well.
> >>>
> >>> Sorry about that Guenter,
> >>
> >> No worries.
> >>
> >>> Ira
> >>>
> >>>> as do the nosmp sparc32 boot tests,
> >>>> but sparc32 boot tests with SMP enabled still fail with lots of messages
> >>>> such as:
> >>>>
> >>>> BUG: Bad page state in process swapper/0  pfn:006a1
> >>>> page:f0933420 refcount:0 mapcount:1 mapping:(ptrval) index:0x1
> >>>> flags: 0x0()
> >>>> raw: 00000000 00000100 00000122 00000000 00000001 00000000 00000000 00000000
> >>>> page dumped because: nonzero mapcount
> >>>> Modules linked in:
> >>>> CPU: 0 PID: 1 Comm: swapper/0 Tainted: G    B             5.7.0-rc6-next-20200518-00002-gb178d2d56f29 #1
> >>>> [f00e7ab8 :
> >>>> bad_page+0xa8/0x108 ]
> >>>> [f00e8b54 :
> >>>> free_pcppages_bulk+0x154/0x52c ]
> >>>> [f00ea024 :
> >>>> free_unref_page+0x54/0x6c ]
> >>>> [f00ed864 :
> >>>> free_reserved_area+0x58/0xec ]
> >>>> [f0527104 :
> >>>> kernel_init+0x14/0x110 ]
> >>>> [f000b77c :
> >>>> ret_from_kernel_thread+0xc/0x38 ]
> >>>> [00000000 :
> >>>> 0x0 ]
> >>>>
> >>>> Code path leading to that message is different but always the same
> >>>> from free_unref_page().
> > 
> > Actually it occurs to me that the patch consolidating kmap_prot is odd for
> > sparc 32 bit...
> > 
> > Its a long shot but could you try reverting this patch?
> > 
> > 4ea7d2419e3f kmap: consolidate kmap_prot definitions
> > 
> 
> That is not easy to revert, unfortunately, due to several follow-up patches.

I have gotten your sparc tests to run and they all pass...

08:10:34 > ../linux-build-test/rootfs/sparc/run-qemu-sparc.sh 
Build reference: v5.7-rc4-17-g852b6f2edc0f

Building sparc32:SPARCClassic:nosmp:scsi:hd ... running ......... passed
Building sparc32:SPARCbook:nosmp:scsi:cd ... running ......... passed
Building sparc32:LX:nosmp:noapc:scsi:hd ... running ......... passed
Building sparc32:SS-4:nosmp:initrd ... running ......... passed
Building sparc32:SS-5:nosmp:scsi:hd ... running ......... passed
Building sparc32:SS-10:nosmp:scsi:cd ... running ......... passed
Building sparc32:SS-20:nosmp:scsi:hd ... running ......... passed
Building sparc32:SS-600MP:nosmp:scsi:hd ... running ......... passed
Building sparc32:Voyager:nosmp:noapc:scsi:hd ... running ......... passed
Building sparc32:SS-4:smp:scsi:hd ... running ......... passed
Building sparc32:SS-5:smp:scsi:cd ... running ......... passed
Building sparc32:SS-10:smp:scsi:hd ... running ......... passed
Building sparc32:SS-20:smp:scsi:hd ... running ......... passed
Building sparc32:SS-600MP:smp:scsi:hd ... running ......... passed
Building sparc32:Voyager:smp:noapc:scsi:hd ... running ......... passed

Is there another test I need to run?

Ira


> 
> Guenter
> 
> > Alternately I will need to figure out how to run the sparc on qemu here...
> > 
> > Thanks very much for all the testing though!  :-D
> > 
> > Ira
> > 
> >>>>
> >>>> Still testing ppc images.
> >>>>
> >>
> >> ppc image tests are passing with this patch.
> >>
> >> Guenter
> 

  reply index

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-07 14:59 [PATCH V3 00/15] Remove duplicated kmap code ira.weiny
2020-05-07 14:59 ` [PATCH V3 01/15] arch/kmap: Remove BUG_ON() ira.weiny
2020-05-07 14:59 ` [PATCH V3 02/15] arch/xtensa: Move kmap build bug out of the way ira.weiny
2020-05-07 14:59 ` [PATCH V3 03/15] arch/kmap: Remove redundant arch specific kmaps ira.weiny
2020-05-07 14:59 ` [PATCH V3 04/15] arch/kunmap: Remove duplicate kunmap implementations ira.weiny
2020-05-07 14:59 ` [PATCH V3 05/15] {x86,powerpc,microblaze}/kmap: Move preempt disable ira.weiny
2020-05-07 14:59 ` [PATCH V3 06/15] arch/kmap_atomic: Consolidate duplicate code ira.weiny
2020-05-07 14:59 ` [PATCH V3 07/15] arch/kunmap_atomic: " ira.weiny
2020-05-16 22:33   ` Guenter Roeck
2020-05-18  3:49     ` Ira Weiny
2020-05-18  4:29       ` Guenter Roeck
2020-05-18 18:11         ` Ira Weiny
2020-05-19  0:03         ` Ira Weiny
2020-05-19  2:50           ` Guenter Roeck
2020-05-19 16:29             ` Ira Weiny
2020-05-18 16:11       ` Guenter Roeck
2020-05-18 18:48   ` [PATCH] arch/{mips,sparc,microblaze,powerpc}: Don't enable pagefault/preempt twice ira.weiny
2020-05-19 16:54     ` Guenter Roeck
2020-05-19 18:40       ` Ira Weiny
2020-05-19 19:42         ` Guenter Roeck
2020-05-20  5:02           ` Ira Weiny
2020-05-20  5:13           ` Ira Weiny
2020-05-21 16:05             ` Guenter Roeck
2020-05-21 17:42               ` Ira Weiny [this message]
2020-05-21 22:27                 ` Guenter Roeck
2020-05-21 22:36                   ` Weiny, Ira
2020-05-21 15:14           ` Ira Weiny
2020-05-21 17:27       ` Al Viro
2020-05-21 22:20         ` Guenter Roeck
2020-05-21 22:46           ` Al Viro
2020-05-22  0:46             ` Al Viro
2020-05-22  1:11               ` Guenter Roeck
2020-05-22  1:29                 ` Al Viro
2020-05-22  1:35                   ` Al Viro
2020-05-22  2:28                     ` Guenter Roeck
2020-05-07 14:59 ` [PATCH V3 08/15] arch/kmap: Ensure kmap_prot visibility ira.weiny
2020-05-07 14:59 ` [PATCH V3 09/15] arch/kmap: Don't hard code kmap_prot values ira.weiny
2020-05-07 14:59 ` [PATCH V3 10/15] arch/kmap: Define kmap_atomic_prot() for all arch's ira.weiny
2020-05-17 17:37   ` Guenter Roeck
2020-05-18 18:17     ` Ira Weiny
2020-05-07 14:59 ` [PATCH V3 11/15] drm: Remove drm specific kmap_atomic code ira.weiny
2020-05-07 15:00 ` [PATCH V3 12/15] kmap: Remove kmap_atomic_to_page() ira.weiny
2020-05-07 15:00 ` [PATCH V3 13/15] parisc/kmap: Remove duplicate kmap code ira.weiny
2020-05-07 20:52   ` Andrew Morton
2020-05-07 22:50     ` Ira Weiny
2020-05-07 15:00 ` [PATCH V3 14/15] sparc: Remove unnecessary includes ira.weiny
2020-05-07 15:00 ` [PATCH V3 15/15] kmap: Consolidate kmap_prot definitions ira.weiny
2020-05-07 20:53   ` Andrew Morton
2020-05-07 22:51     ` Ira Weiny
2020-05-07 22:52   ` [PATCH V3.1] " ira.weiny

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200521174250.GB176262@iweiny-DESK2.sc.intel.com \
    --to=ira.weiny@intel.com \
    --cc=James.Bottomley@HansenPartnership.com \
    --cc=akpm@linux-foundation.org \
    --cc=benh@kernel.crashing.org \
    --cc=bp@alien8.de \
    --cc=chris@zankel.net \
    --cc=christian.koenig@amd.com \
    --cc=dan.j.williams@intel.com \
    --cc=dave.hansen@linux.intel.com \
    --cc=davem@davemloft.net \
    --cc=deller@gmx.de \
    --cc=dri-devel@lists.freedesktop.org \
    --cc=hch@lst.de \
    --cc=hpa@zytor.com \
    --cc=jcmvbkbc@gmail.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-csky@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mips@vger.kernel.org \
    --cc=linux-parisc@vger.kernel.org \
    --cc=linux-snps-arc@lists.infradead.org \
    --cc=linux-xtensa@linux-xtensa.org \
    --cc=linux@roeck-us.net \
    --cc=linuxppc-dev@lists.ozlabs.org \
    --cc=luto@kernel.org \
    --cc=mingo@redhat.com \
    --cc=paulus@samba.org \
    --cc=peterz@infradead.org \
    --cc=sparclinux@vger.kernel.org \
    --cc=tglx@linutronix.de \
    --cc=tsbogend@alpha.franken.de \
    --cc=viro@zeniv.linux.org.uk \
    --cc=x86@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-parisc archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-parisc/0 linux-parisc/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-parisc linux-parisc/ https://lore.kernel.org/linux-parisc \
		linux-parisc@vger.kernel.org
	public-inbox-index linux-parisc

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-parisc


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git