* [PATCH v2 1/2] drm/msm: Call shutdown conditionally
@ 2021-01-19 23:10 Fabio Estevam
0 siblings, 0 replies; 4+ messages in thread
From: Fabio Estevam @ 2021-01-19 23:10 UTC (permalink / raw)
To: robdclark
Cc: mkrishn, jonathan, airlied, dri-devel, bjorn.andersson, stable,
kernel, kalyan_t, sean
Issuing a 'reboot' command in i.MX5 leads to the following flow:
[ 24.557742] [<c0769b78>] (msm_atomic_commit_tail) from [<c06db0b4>]
(commit_tail+0xa4/0x1b0)
[ 24.566349] [<c06db0b4>] (commit_tail) from [<c06dbed0>]
(drm_atomic_helper_commit+0x154/0x188)
[ 24.575193] [<c06dbed0>] (drm_atomic_helper_commit) from
[<c06db604>] (drm_atomic_helper_disable_all+0x154/0x1c0)
[ 24.585599] [<c06db604>] (drm_atomic_helper_disable_all) from
[<c06db704>] (drm_atomic_helper_shutdown+0x94/0x12c)
[ 24.596094] [<c06db704>] (drm_atomic_helper_shutdown) from
In the i.MX5 case, priv->kms is not populated (as i.MX5 does not use any
of the Qualcomm display controllers), causing a NULL pointer
dereference in msm_atomic_commit_tail():
[ 24.268964] 8<--- cut here ---
[ 24.274602] Unable to handle kernel NULL pointer dereference at
virtual address 00000000
[ 24.283434] pgd = (ptrval)
[ 24.286387] [00000000] *pgd=ca212831
[ 24.290788] Internal error: Oops: 17 [#1] SMP ARM
[ 24.295609] Modules linked in:
[ 24.298777] CPU: 0 PID: 197 Comm: init Not tainted 5.11.0-rc2-next-20210111 #333
[ 24.306276] Hardware name: Freescale i.MX53 (Device Tree Support)
[ 24.312442] PC is at msm_atomic_commit_tail+0x54/0xb9c
[ 24.317743] LR is at commit_tail+0xa4/0x1b0
Fix the problem by calling drm_atomic_helper_shutdown() conditionally.
Cc: <stable@vger.kernel.org>
Fixes: 9d5cbf5fe46e ("drm/msm: add shutdown support for display platform_driver")
Suggested-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Fabio Estevam <festevam@gmail.com>
---
Changes since v1:
- Explain in the commit log that the problem happens after a 'reboot' command.
drivers/gpu/drm/msm/msm_drv.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 108c405e03dd..c082b72b9e3b 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -1311,7 +1311,8 @@ static void msm_pdev_shutdown(struct platform_device *pdev)
{
struct drm_device *drm = platform_get_drvdata(pdev);
- drm_atomic_helper_shutdown(drm);
+ if (get_mdp_ver(pdev))
+ drm_atomic_helper_shutdown(drm);
}
static const struct of_device_id dt_match[] = {
--
2.25.1
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH v2 1/2] drm/msm: Call shutdown conditionally
2021-01-29 11:09 ` Fabio Estevam
@ 2021-02-15 13:39 ` Fabio Estevam
0 siblings, 0 replies; 4+ messages in thread
From: Fabio Estevam @ 2021-02-15 13:39 UTC (permalink / raw)
To: Rob Clark
Cc: Krishna Manikandan, Jonathan Marek, David Airlie,
DRI mailing list, Bjorn Andersson, stable, Sascha Hauer,
kalyan_t, Sean Paul
Gentle ping...
On Fri, Jan 29, 2021 at 8:09 AM Fabio Estevam <festevam@gmail.com> wrote:
>
> Hi Rob,
>
> Any comments on this series, please?
>
> On Tue, Jan 19, 2021 at 8:15 PM Fabio Estevam <festevam@gmail.com> wrote:
> >
> > Issuing a 'reboot' command in i.MX5 leads to the following flow:
> >
> > [ 24.557742] [<c0769b78>] (msm_atomic_commit_tail) from [<c06db0b4>]
> > (commit_tail+0xa4/0x1b0)
> > [ 24.566349] [<c06db0b4>] (commit_tail) from [<c06dbed0>]
> > (drm_atomic_helper_commit+0x154/0x188)
> > [ 24.575193] [<c06dbed0>] (drm_atomic_helper_commit) from
> > [<c06db604>] (drm_atomic_helper_disable_all+0x154/0x1c0)
> > [ 24.585599] [<c06db604>] (drm_atomic_helper_disable_all) from
> > [<c06db704>] (drm_atomic_helper_shutdown+0x94/0x12c)
> > [ 24.596094] [<c06db704>] (drm_atomic_helper_shutdown) from
> >
> > In the i.MX5 case, priv->kms is not populated (as i.MX5 does not use any
> > of the Qualcomm display controllers), causing a NULL pointer
> > dereference in msm_atomic_commit_tail():
> >
> > [ 24.268964] 8<--- cut here ---
> > [ 24.274602] Unable to handle kernel NULL pointer dereference at
> > virtual address 00000000
> > [ 24.283434] pgd = (ptrval)
> > [ 24.286387] [00000000] *pgd=ca212831
> > [ 24.290788] Internal error: Oops: 17 [#1] SMP ARM
> > [ 24.295609] Modules linked in:
> > [ 24.298777] CPU: 0 PID: 197 Comm: init Not tainted 5.11.0-rc2-next-20210111 #333
> > [ 24.306276] Hardware name: Freescale i.MX53 (Device Tree Support)
> > [ 24.312442] PC is at msm_atomic_commit_tail+0x54/0xb9c
> > [ 24.317743] LR is at commit_tail+0xa4/0x1b0
> >
> > Fix the problem by calling drm_atomic_helper_shutdown() conditionally.
> >
> > Cc: <stable@vger.kernel.org>
> > Fixes: 9d5cbf5fe46e ("drm/msm: add shutdown support for display platform_driver")
> > Suggested-by: Rob Clark <robdclark@gmail.com>
> > Signed-off-by: Fabio Estevam <festevam@gmail.com>
> > ---
> > Changes since v1:
> > - Explain in the commit log that the problem happens after a 'reboot' command.
> >
> > drivers/gpu/drm/msm/msm_drv.c | 3 ++-
> > 1 file changed, 2 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
> > index 108c405e03dd..c082b72b9e3b 100644
> > --- a/drivers/gpu/drm/msm/msm_drv.c
> > +++ b/drivers/gpu/drm/msm/msm_drv.c
> > @@ -1311,7 +1311,8 @@ static void msm_pdev_shutdown(struct platform_device *pdev)
> > {
> > struct drm_device *drm = platform_get_drvdata(pdev);
> >
> > - drm_atomic_helper_shutdown(drm);
> > + if (get_mdp_ver(pdev))
> > + drm_atomic_helper_shutdown(drm);
> > }
> >
> > static const struct of_device_id dt_match[] = {
> > --
> > 2.25.1
> >
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v2 1/2] drm/msm: Call shutdown conditionally
2021-01-19 23:13 Fabio Estevam
@ 2021-01-29 11:09 ` Fabio Estevam
2021-02-15 13:39 ` Fabio Estevam
0 siblings, 1 reply; 4+ messages in thread
From: Fabio Estevam @ 2021-01-29 11:09 UTC (permalink / raw)
To: Rob Clark
Cc: Krishna Manikandan, Jonathan Marek, David Airlie,
DRI mailing list, Bjorn Andersson, stable, Sascha Hauer,
kalyan_t, Sean Paul
Hi Rob,
Any comments on this series, please?
On Tue, Jan 19, 2021 at 8:15 PM Fabio Estevam <festevam@gmail.com> wrote:
>
> Issuing a 'reboot' command in i.MX5 leads to the following flow:
>
> [ 24.557742] [<c0769b78>] (msm_atomic_commit_tail) from [<c06db0b4>]
> (commit_tail+0xa4/0x1b0)
> [ 24.566349] [<c06db0b4>] (commit_tail) from [<c06dbed0>]
> (drm_atomic_helper_commit+0x154/0x188)
> [ 24.575193] [<c06dbed0>] (drm_atomic_helper_commit) from
> [<c06db604>] (drm_atomic_helper_disable_all+0x154/0x1c0)
> [ 24.585599] [<c06db604>] (drm_atomic_helper_disable_all) from
> [<c06db704>] (drm_atomic_helper_shutdown+0x94/0x12c)
> [ 24.596094] [<c06db704>] (drm_atomic_helper_shutdown) from
>
> In the i.MX5 case, priv->kms is not populated (as i.MX5 does not use any
> of the Qualcomm display controllers), causing a NULL pointer
> dereference in msm_atomic_commit_tail():
>
> [ 24.268964] 8<--- cut here ---
> [ 24.274602] Unable to handle kernel NULL pointer dereference at
> virtual address 00000000
> [ 24.283434] pgd = (ptrval)
> [ 24.286387] [00000000] *pgd=ca212831
> [ 24.290788] Internal error: Oops: 17 [#1] SMP ARM
> [ 24.295609] Modules linked in:
> [ 24.298777] CPU: 0 PID: 197 Comm: init Not tainted 5.11.0-rc2-next-20210111 #333
> [ 24.306276] Hardware name: Freescale i.MX53 (Device Tree Support)
> [ 24.312442] PC is at msm_atomic_commit_tail+0x54/0xb9c
> [ 24.317743] LR is at commit_tail+0xa4/0x1b0
>
> Fix the problem by calling drm_atomic_helper_shutdown() conditionally.
>
> Cc: <stable@vger.kernel.org>
> Fixes: 9d5cbf5fe46e ("drm/msm: add shutdown support for display platform_driver")
> Suggested-by: Rob Clark <robdclark@gmail.com>
> Signed-off-by: Fabio Estevam <festevam@gmail.com>
> ---
> Changes since v1:
> - Explain in the commit log that the problem happens after a 'reboot' command.
>
> drivers/gpu/drm/msm/msm_drv.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
> index 108c405e03dd..c082b72b9e3b 100644
> --- a/drivers/gpu/drm/msm/msm_drv.c
> +++ b/drivers/gpu/drm/msm/msm_drv.c
> @@ -1311,7 +1311,8 @@ static void msm_pdev_shutdown(struct platform_device *pdev)
> {
> struct drm_device *drm = platform_get_drvdata(pdev);
>
> - drm_atomic_helper_shutdown(drm);
> + if (get_mdp_ver(pdev))
> + drm_atomic_helper_shutdown(drm);
> }
>
> static const struct of_device_id dt_match[] = {
> --
> 2.25.1
>
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH v2 1/2] drm/msm: Call shutdown conditionally
@ 2021-01-19 23:13 Fabio Estevam
2021-01-29 11:09 ` Fabio Estevam
0 siblings, 1 reply; 4+ messages in thread
From: Fabio Estevam @ 2021-01-19 23:13 UTC (permalink / raw)
To: robdclark
Cc: mkrishn, jonathan, airlied, dri-devel, bjorn.andersson, stable,
kernel, kalyan_t, sean
Issuing a 'reboot' command in i.MX5 leads to the following flow:
[ 24.557742] [<c0769b78>] (msm_atomic_commit_tail) from [<c06db0b4>]
(commit_tail+0xa4/0x1b0)
[ 24.566349] [<c06db0b4>] (commit_tail) from [<c06dbed0>]
(drm_atomic_helper_commit+0x154/0x188)
[ 24.575193] [<c06dbed0>] (drm_atomic_helper_commit) from
[<c06db604>] (drm_atomic_helper_disable_all+0x154/0x1c0)
[ 24.585599] [<c06db604>] (drm_atomic_helper_disable_all) from
[<c06db704>] (drm_atomic_helper_shutdown+0x94/0x12c)
[ 24.596094] [<c06db704>] (drm_atomic_helper_shutdown) from
In the i.MX5 case, priv->kms is not populated (as i.MX5 does not use any
of the Qualcomm display controllers), causing a NULL pointer
dereference in msm_atomic_commit_tail():
[ 24.268964] 8<--- cut here ---
[ 24.274602] Unable to handle kernel NULL pointer dereference at
virtual address 00000000
[ 24.283434] pgd = (ptrval)
[ 24.286387] [00000000] *pgd=ca212831
[ 24.290788] Internal error: Oops: 17 [#1] SMP ARM
[ 24.295609] Modules linked in:
[ 24.298777] CPU: 0 PID: 197 Comm: init Not tainted 5.11.0-rc2-next-20210111 #333
[ 24.306276] Hardware name: Freescale i.MX53 (Device Tree Support)
[ 24.312442] PC is at msm_atomic_commit_tail+0x54/0xb9c
[ 24.317743] LR is at commit_tail+0xa4/0x1b0
Fix the problem by calling drm_atomic_helper_shutdown() conditionally.
Cc: <stable@vger.kernel.org>
Fixes: 9d5cbf5fe46e ("drm/msm: add shutdown support for display platform_driver")
Suggested-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Fabio Estevam <festevam@gmail.com>
---
Changes since v1:
- Explain in the commit log that the problem happens after a 'reboot' command.
drivers/gpu/drm/msm/msm_drv.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 108c405e03dd..c082b72b9e3b 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -1311,7 +1311,8 @@ static void msm_pdev_shutdown(struct platform_device *pdev)
{
struct drm_device *drm = platform_get_drvdata(pdev);
- drm_atomic_helper_shutdown(drm);
+ if (get_mdp_ver(pdev))
+ drm_atomic_helper_shutdown(drm);
}
static const struct of_device_id dt_match[] = {
--
2.25.1
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply related [flat|nested] 4+ messages in thread
end of thread, other threads:[~2021-02-15 13:39 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-01-19 23:10 [PATCH v2 1/2] drm/msm: Call shutdown conditionally Fabio Estevam
2021-01-19 23:13 Fabio Estevam
2021-01-29 11:09 ` Fabio Estevam
2021-02-15 13:39 ` Fabio Estevam
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).