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 [thread overview]
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
>
next prev parent reply other threads:[~2020-05-21 17:42 UTC|newest]
Thread overview: 61+ 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
2020-06-03 20:57 ` Andrew Morton
2020-06-03 21:14 ` Ira Weiny
2020-06-03 23:44 ` Guenter Roeck
2020-06-04 6:18 ` Mike Rapoport
2020-06-04 6:43 ` Ira Weiny
2020-06-04 6:22 ` Ira Weiny
2020-06-04 6:37 ` Mike Rapoport
2020-06-04 6:44 ` Ira Weiny
2020-06-04 9:38 ` Guenter Roeck
2020-06-04 9:41 ` Mike Rapoport
2020-06-04 20:51 ` Ira Weiny
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
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