From: Daniel Vetter <daniel@ffwll.ch>
To: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Cc: Intel Graphics Development <intel-gfx@lists.freedesktop.org>,
Alexey Brodkin <Alexey.Brodkin@synopsys.com>,
DRI Development <dri-devel@lists.freedesktop.org>,
Daniel Vetter <daniel.vetter@intel.com>,
Sam Ravnborg <sam@ravnborg.org>,
"snps-arc@lists.infradead.org" <snps-arc@lists.infradead.org>
Subject: Re: [PATCH 53/59] drm/arc: Move to drm/tiny
Date: Fri, 17 Jul 2020 11:04:07 +0200 [thread overview]
Message-ID: <20200717090407.GP3278063@phenom.ffwll.local> (raw)
In-Reply-To: <CAKMK7uFHCTkqoMGBW3QMjhJZaaakC_zYxxVW_C-LYRj0Yjt2gg@mail.gmail.com>
On Tue, Jun 09, 2020 at 03:02:14PM +0200, Daniel Vetter wrote:
> Hi Eugeniy,
>
> Very much appreciated, and kinda expected. That 2nd backtrace really
> confuses me, so "something strange is going on" and the bisect looks
> funny is within expectations. Hopefully we can track down what's going
> on.
I'm going to resend the entire pile with the bugfix below and all rebased,
I think retesting it all is probably a good idea now, since quite some
time passed.
Cheers, Daniel
>
> Thanks, Daniel
>
> On Tue, Jun 9, 2020 at 2:08 PM Eugeniy Paltsev
> <Eugeniy.Paltsev@synopsys.com> wrote:
> >
> > Hi Daniel,
> >
> > I've got pretty strange results so I need some time to investigate it and probably retest.
> > I'll send you update in a few days.
> >
> > ---
> > Eugeniy Paltsev
> >
> >
> > ________________________________________
> > From: Daniel Vetter <daniel@ffwll.ch>
> > Sent: Friday, June 5, 2020 22:55
> > To: Eugeniy Paltsev
> > Cc: Intel Graphics Development; DRI Development; Daniel Vetter; Sam Ravnborg; Alexey Brodkin; snps-arc@lists.infradead.org
> > Subject: Re: [PATCH 53/59] drm/arc: Move to drm/tiny
> >
> > Hi Eugeniy,
> >
> > Thanks for testing. I looked at the second one (I hoped it would just
> > magically disappear) and I still don't understand what's going on
> > there. My patch series isn't touching that area at all, so really
> > confused.
> >
> > I squashed in the bugfix from the previous round into the right
> > patches, and pushed a branch with just the arcpgu changes here:
> > https://urldefense.com/v3/__https://cgit.freedesktop.org/*danvet/drm/log/?h=for-eugeniy__;fg!!A4F2R9G_pg!IJ1o4XiXVdStPu--Q-SCTUpRbsbqrjX255R34nuD7L7ptPywOy4SKr21dwSpfOkXIVqH5pM$
> >
> > Maybe it's something in my pile of not-so-tested stuff :-)
> >
> > Can you pls test this? And if it still fails, try to bisect where it breaks?
> >
> > Thanks, Daniel
> >
> > On Thu, Jun 4, 2020 at 9:00 PM Eugeniy Paltsev
> > <Eugeniy.Paltsev@synopsys.com> wrote:
> > >
> > > I've tested your change and one issue gone.
> > >
> > > However I still see kernel crash (due to invalid read in kernel mode by 0x0 address) on weston stop:
> > > ----------------------------------->8-------------------------------------------
> > > Oops
> > > Path: (null)
> > > CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.7.0-rc6-01594-g4ceda91a4176-dirty #6
> > > Workqueue: events drm_mode_rmfb_work_fn
> > > Invalid Read @ 0x00000000 by insn @ drm_gem_fb_destroy+0x32/0x130
> > > ECR: 0x00050100 EFA: 0x00000000 ERET: 0x813b9a76
> > > STAT32: 0x80080602 [IE K ] BTA: 0x813b9a72
> > > BLK: drm_gem_fb_destroy+0xc0/0x130
> > > SP: 0x9f055ea4 FP: 0x00000000
> > > LPS: 0x813560ec LPE: 0x813560f0 LPC: 0x00000000
> > > r00: 0x00000000 r01: 0x9f6a6100 r02: 0x00000001
> > > r03: 0x9fd5dde8 r04: 0x810f5de8 r05: 0x00000000
> > > r06: 0x00000000 r07: 0x00000000 r08: 0x000000e1
> > > r09: 0x00000000 r10: 0x00000000 r11: 0x000000e1
> > > r12: 0x813b9b04
> > >
> > > Stack Trace:
> > > drm_gem_fb_destroy+0x32/0x130
> > > drm_framebuffer_remove+0x1d2/0x358
> > > drm_mode_rmfb_work_fn+0x28/0x38
> > > process_one_work+0x19a/0x358
> > > worker_thread+0x2c4/0x494
> > > kthread+0xec/0x100
> > > ret_from_fork+0x18/0x1c
> > > ----------------------------------->8-------------------------------------------
> > >
> > >
> > > The stack traces may vary but always end in drm_gem_fb_destroy:
> > > ----------------------------------->8-------------------------------------------
> > > Stack Trace:
> > > drm_gem_fb_destroy+0x32/0x130
> > > drm_mode_rmfb+0x10e/0x148
> > > drm_ioctl_kernel+0x70/0xa0
> > > drm_ioctl+0x284/0x410
> > > ksys_ioctl+0xea/0xa3c
> > > EV_Trap+0xcc/0xd0
> > > ----------------------------------->8-------------------------------------------
> > > Stack Trace:
> > > drm_gem_fb_destroy+0x32/0x130
> > > drm_fb_release+0x66/0xb0
> > > drm_file_free.part.11+0x112/0x1bc
> > > drm_release+0x80/0x120
> > > __fput+0x98/0x1bc
> > > task_work_run+0x6e/0xa8
> > > do_exit+0x2b4/0x7fc
> > > do_group_exit+0x2a/0x8c
> > > get_signal+0x9a/0x5f0
> > > do_signal+0x86/0x23c
> > > resume_user_mode_begin+0x88/0xd0
> > > ----------------------------------->8-------------------------------------------
> > >
> > >
> > > ---
> > > Eugeniy Paltsev
> > >
> > >
> > > ________________________________________
> > > From: Daniel Vetter <daniel@ffwll.ch>
> > > Sent: Thursday, June 4, 2020 14:19
> > > To: Eugeniy Paltsev
> > > Cc: Intel Graphics Development; DRI Development; Daniel Vetter; Sam Ravnborg; Alexey Brodkin
> > > Subject: Re: [PATCH 53/59] drm/arc: Move to drm/tiny
> > >
> > > Hi Eugeniy,
> > >
> > > Apologies, somehow I missed your mail. I looked at the code again, and I
> > > think I fumbled something. Does the below diff help to prevent the issues?
> > >
> > > Thanks, Daniel
> > >
> > >
> > > diff --git a/drivers/gpu/drm/tiny/arcpgu.c b/drivers/gpu/drm/tiny/arcpgu.c
> > > index 857812f25bec..33d812a5ad7f 100644
> > > --- a/drivers/gpu/drm/tiny/arcpgu.c
> > > +++ b/drivers/gpu/drm/tiny/arcpgu.c
> > > @@ -228,6 +228,9 @@ static void arc_pgu_update(struct drm_simple_display_pipe *pipe,
> > > struct arcpgu_drm_private *arcpgu;
> > > struct drm_gem_cma_object *gem;
> > >
> > > + if (!pipe->plane.state->fb)
> > > + return;
> > > +
> > > arcpgu = pipe_to_arcpgu_priv(pipe);
> > > gem = drm_fb_cma_get_gem_obj(pipe->plane.state->fb, 0);
> > > arc_pgu_write(arcpgu, ARCPGU_REG_BUF0_ADDR, gem->paddr);
> > > --
> > > Daniel Vetter
> > > Software Engineer, Intel Corporation
> > > +41 (0) 79 365 57 48 - https://urldefense.com/v3/__http://blog.ffwll.ch__;!!A4F2R9G_pg!P0EvyJfMuDwqbeZmHZM5S9po30QWr4KgGrggRirNfgo7wrRXfnUO-8iq0AA4fQCW2WGPlDc$
> >
> >
> >
> > --
> > Daniel Vetter
> > Software Engineer, Intel Corporation
> > +41 (0) 79 365 57 48 - https://urldefense.com/v3/__http://blog.ffwll.ch__;!!A4F2R9G_pg!IJ1o4XiXVdStPu--Q-SCTUpRbsbqrjX255R34nuD7L7ptPywOy4SKr21dwSpfOkXpn86Q20$
>
>
>
> --
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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next prev parent reply other threads:[~2020-07-17 9:04 UTC|newest]
Thread overview: 145+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-15 7:39 [PATCH 00/59] devm_drm_dev_alloc, v2 Daniel Vetter
2020-04-15 7:39 ` [PATCH 01/59] drm: Add devm_drm_dev_alloc macro Daniel Vetter
2020-04-20 13:36 ` Thomas Zimmermann
2020-04-21 10:45 ` Daniel Vetter
2020-04-21 14:03 ` Thomas Zimmermann
2020-04-21 20:32 ` Sam Ravnborg
2020-04-28 13:06 ` Daniel Vetter
2020-04-15 7:39 ` [PATCH 02/59] drm/vboxvideo: drop DRM_MTRR_WC #define Daniel Vetter
2020-04-15 15:01 ` Hans de Goede
2020-04-15 7:39 ` [PATCH 03/59] drm/vboxvideo: Use devm_drm_dev_alloc Daniel Vetter
2020-04-15 15:02 ` Hans de Goede
2020-04-24 16:33 ` Sam Ravnborg
2020-04-15 7:39 ` [PATCH 04/59] drm/vboxvideo: Stop using drm_device->dev_private Daniel Vetter
2020-04-15 15:02 ` Hans de Goede
2020-04-15 7:39 ` [PATCH 05/59] drm/vboxvidoe: use managed pci functions Daniel Vetter
2020-04-15 15:03 ` Hans de Goede
2020-04-15 17:44 ` Daniel Vetter
2020-04-20 13:16 ` Hans de Goede
2020-04-15 17:32 ` Thomas Zimmermann
2020-04-15 7:39 ` [PATCH 06/59] drm/vboxvideo: Use devm_gen_pool_create Daniel Vetter
2020-04-15 15:04 ` Hans de Goede
2020-04-15 7:39 ` [PATCH 07/59] drm/v3d: Don't set drm_device->dev_private Daniel Vetter
2020-04-15 7:39 ` [PATCH 08/59] drm/v3d: Use devm_drm_dev_alloc Daniel Vetter
2020-04-15 7:39 ` [PATCH 09/59] drm/v3d: Delete v3d_dev->dev Daniel Vetter
2020-04-15 7:39 ` [PATCH 10/59] drm/v3d: Delete v3d_dev->pdev Daniel Vetter
2020-04-15 7:39 ` [PATCH 11/59] drm/udl: Use devm_drm_dev_alloc Daniel Vetter
2020-04-15 7:55 ` Thomas Zimmermann
2020-04-24 14:55 ` Sam Ravnborg
2020-04-28 13:18 ` Daniel Vetter
2020-04-15 7:39 ` [PATCH 12/59] drm/udl: don't set drm_device->dev_private Daniel Vetter
2020-04-15 7:39 ` [PATCH 13/59] drm/st7735r: Use devm_drm_dev_alloc Daniel Vetter
2020-04-15 7:39 ` [PATCH 14/59] drm/st7586: " Daniel Vetter
2020-04-15 7:39 ` [PATCH 15/59] drm/repaper: " Daniel Vetter
2020-04-15 7:39 ` [PATCH 16/59] drm/mi0283qt: " Daniel Vetter
2020-04-15 7:39 ` [PATCH 17/59] drm/ili9486: " Daniel Vetter
2020-04-15 7:39 ` [PATCH 18/59] drm/ili9341: " Daniel Vetter
2020-04-15 7:39 ` [PATCH 19/59] drm/ili9225: " Daniel Vetter
2020-04-15 7:39 ` [PATCH 20/59] drm/hx8357d: " Daniel Vetter
2020-04-15 7:39 ` [PATCH 21/59] drm/gm12u320: " Daniel Vetter
2020-04-15 15:04 ` Hans de Goede
2020-04-15 7:39 ` [PATCH 22/59] drm/gm12u320: Don't use drm_device->dev_private Daniel Vetter
2020-04-15 15:05 ` Hans de Goede
2020-04-15 7:39 ` [PATCH 23/59] drm/tidss: Use devm_drm_dev_alloc Daniel Vetter
2020-04-21 11:03 ` Tomi Valkeinen
2020-04-15 7:39 ` [PATCH 24/59] drm/tidss: Don't use drm_device->dev_private Daniel Vetter
2020-04-21 11:05 ` Tomi Valkeinen
2020-04-15 7:40 ` [PATCH 25/59] drm/tidss: Delete tidss->saved_state Daniel Vetter
2020-04-21 11:05 ` Tomi Valkeinen
2020-04-15 7:40 ` [PATCH 26/59] drm/qxl: Use devm_drm_dev_alloc Daniel Vetter
2020-04-24 15:09 ` Sam Ravnborg
2020-04-28 14:00 ` Daniel Vetter
2020-04-28 17:00 ` Sam Ravnborg
2020-04-28 18:04 ` Daniel Vetter
2020-04-15 7:40 ` [PATCH 27/59] drm/qxl: Don't use drm_device->dev_private Daniel Vetter
2020-04-24 15:12 ` Sam Ravnborg
2020-04-15 7:40 ` [PATCH 28/59] drm/mcde: Use devm_drm_dev_alloc Daniel Vetter
2020-04-15 12:20 ` Linus Walleij
2020-04-15 7:40 ` [PATCH 29/59] drm/mcde: Don't use drm_device->dev_private Daniel Vetter
2020-04-15 7:40 ` [PATCH 30/59] drm/ingenic: Use devm_drm_dev_alloc Daniel Vetter
2020-04-15 7:40 ` [PATCH 31/59] drm/ingenic: Don't set drm_device->dev_private Daniel Vetter
2020-04-15 7:40 ` [PATCH 32/59] drm/komeda: use devm_drm_dev_alloc Daniel Vetter
2020-04-15 7:40 ` [PATCH 33/59] drm/armada: Use devm_drm_dev_alloc Daniel Vetter
2020-04-15 7:40 ` [PATCH 34/59] drm/armada: Don't use drm_device->dev_private Daniel Vetter
2020-04-15 7:40 ` [PATCH 35/59] drm/cirrus: Use devm_drm_dev_alloc Daniel Vetter
2020-04-15 7:40 ` [PATCH 36/59] drm/cirrus: Don't use drm_device->dev_private Daniel Vetter
2020-04-15 7:40 ` [PATCH 37/59] drm/cirrus: Move to drm/tiny Daniel Vetter
2020-04-15 8:01 ` Thomas Zimmermann
2020-04-15 8:19 ` Daniel Vetter
2020-04-15 8:46 ` Thomas Zimmermann
2020-04-15 9:31 ` Daniel Vetter
2020-04-21 7:37 ` Gerd Hoffmann
2020-04-24 16:37 ` Sam Ravnborg
2020-04-15 7:40 ` [PATCH 38/59] drm/i915: Use devm_drm_dev_alloc Daniel Vetter
2020-04-28 18:52 ` Daniel Vetter
2020-04-15 7:40 ` [PATCH 39/59] drm/arcpgu: Switch to devm_drm_dev_alloc Daniel Vetter
2020-04-24 16:43 ` Sam Ravnborg
2020-04-15 7:40 ` [PATCH 40/59] drm/arcpgu: Stop using drm_device->dev_private Daniel Vetter
2020-04-24 16:46 ` Sam Ravnborg
2020-09-04 13:42 ` Daniel Vetter
2020-09-04 14:42 ` Sam Ravnborg
2020-04-15 7:40 ` [PATCH 41/59] drm/arcpgu: Delete arcpgu_priv->fb Daniel Vetter
2020-04-24 16:47 ` Sam Ravnborg
2020-04-15 7:40 ` [PATCH 42/59] drm/arc: Embedded a drm_simple_display_pipe Daniel Vetter
2020-04-24 17:34 ` Sam Ravnborg
2020-04-15 7:40 ` [PATCH 43/59] drm/arc: Embedd a drm_connector for sim case Daniel Vetter
2020-04-24 17:34 ` Sam Ravnborg
2020-04-15 7:40 ` [PATCH 44/59] drm/arc: Drop surplus connector registration Daniel Vetter
2020-04-24 16:51 ` Sam Ravnborg
2020-04-15 7:40 ` [PATCH 45/59] drm/arc: Use drmm_mode_config_cleanup Daniel Vetter
2020-04-24 17:36 ` Sam Ravnborg
2020-04-15 7:40 ` [PATCH 46/59] drm/arc: Align with simple pipe helpers Daniel Vetter
2020-04-25 12:24 ` Sam Ravnborg
2020-04-15 7:40 ` [PATCH 47/59] drm/arc: Convert to drm_simple_kms_pipe_helper Daniel Vetter
2020-04-24 17:40 ` Sam Ravnborg
2020-04-15 7:40 ` [PATCH 48/59] drm/arc: Drop fb/crtc check in arc_pgu_update Daniel Vetter
2020-04-24 17:45 ` Sam Ravnborg
2020-04-15 7:40 ` [PATCH 49/59] drm/arc: Inline arcpgu_crtc.c Daniel Vetter
2020-04-24 17:51 ` Sam Ravnborg
2020-04-15 7:40 ` [PATCH 50/59] drm/arc: Inline arcpgu_drm_hdmi_init Daniel Vetter
2020-04-24 17:54 ` Sam Ravnborg
2020-04-15 7:40 ` [PATCH 51/59] drm/arc: Inline remaining files Daniel Vetter
2020-04-24 17:56 ` Sam Ravnborg
2020-04-15 7:40 ` [PATCH 52/59] drm/arc: Initialize sim connector before display pipe Daniel Vetter
2020-04-24 17:58 ` Sam Ravnborg
2020-04-15 7:40 ` [PATCH 53/59] drm/arc: Move to drm/tiny Daniel Vetter
2020-04-15 8:04 ` Thomas Zimmermann
2020-04-15 8:22 ` Daniel Vetter
2020-04-15 9:45 ` Sam Ravnborg
2020-04-15 12:02 ` Alexey Brodkin
2020-04-15 12:20 ` Daniel Vetter
2020-04-28 14:08 ` Daniel Vetter
2020-05-08 13:56 ` Alexey Brodkin
2020-05-08 18:07 ` Daniel Vetter
2020-06-04 8:05 ` Daniel Vetter
2020-06-04 10:38 ` Eugeniy Paltsev
2020-06-04 11:19 ` Daniel Vetter
2020-06-04 19:00 ` Eugeniy Paltsev
2020-06-05 19:55 ` Daniel Vetter
2020-06-09 12:08 ` Eugeniy Paltsev
2020-06-09 13:02 ` Daniel Vetter
2020-07-17 9:04 ` Daniel Vetter [this message]
2020-04-15 7:40 ` [PATCH 54/59] drm/aspeed: Drop aspeed_gfx->fbdev Daniel Vetter
2020-04-24 18:00 ` Sam Ravnborg
2020-04-15 7:40 ` [PATCH 55/59] drm/aspeed: Use devm_drm_dev_alloc Daniel Vetter
2020-04-24 18:02 ` Sam Ravnborg
2020-04-15 7:40 ` [PATCH 56/59] drm/aspeed: Use managed drmm_mode_config_cleanup Daniel Vetter
2020-04-24 18:10 ` Sam Ravnborg
2020-04-28 14:12 ` Daniel Vetter
2020-04-28 17:03 ` Sam Ravnborg
2020-04-15 7:40 ` [PATCH 57/59] drm/ast: Use managed pci functions Daniel Vetter
2020-04-15 7:52 ` Thomas Zimmermann
2020-04-15 8:09 ` Daniel Vetter
2020-04-15 8:17 ` Daniel Vetter
2020-04-15 12:23 ` Daniel Vetter
2020-06-11 12:04 ` Thomas Zimmermann
2020-06-16 11:55 ` Daniel Vetter
2020-04-15 7:40 ` [PATCH 58/59] drm/ast: Drop explicit connector register/unregister Daniel Vetter
2020-04-15 7:53 ` Thomas Zimmermann
2020-04-24 18:11 ` Sam Ravnborg
2020-04-15 7:40 ` [PATCH 59/59] drm/bochs: Remove explicit drm_connector_register Daniel Vetter
2020-04-21 7:39 ` Gerd Hoffmann
2020-04-24 18:11 ` Sam Ravnborg
2020-05-25 16:36 [PATCH 53/59] drm/arc: Move to drm/tiny Eugeniy Paltsev
2020-05-25 17:26 ` Daniel Vetter
2020-05-25 21:18 ` Eugeniy Paltsev
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