[Bug 90681] Radeon Kernel Oops & Lockup when switching on DisplayPort attached monitor

[Bug 90681] Radeon Kernel Oops & Lockup when switching on DisplayPort attached monitor

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 2455 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=90681

            Bug ID: 90681
           Summary: Radeon Kernel Oops & Lockup when switching on
                    DisplayPort attached monitor
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Radeon
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: bradfirj@fstab.me

Created attachment 116079
  --> https://bugs.freedesktop.org/attachment.cgi?id=116079&action=edit
journalctl output for crash

Switching my DisplayPort attached monitor on (or off and then on again) while
booted to multiuser target (no Xorg or Wayland) causes a kernel Oops, followed
by soft-lockups which render the system unusable.

Doing the same while at the full Graphical target causes gnome-shell to crash,
but it is possible to recover the system by logging in again.

The kernel error and IP are:
>May 24 23:25:28 fedora-workstation.home kernel: BUG: unable to handle kernel NULL pointer dereference at 00000000000003b0
>May 24 23:25:28 fedora-workstation.home kernel: IP: [<ffffffffa0152055>] radeon_connector_edid+0x5/0x70 [radeon]

Full journal from a reproduction of the bug will be attached, as will lspci
-nn.

I have isolated this using git bisect to the following commit (the patch for
which is attached to this bug).
This is a commit currently part of the linux-stable tree and lies between 4.0.2
and 4.0.3

>016a255b7835ee7e49a3eba3c14ba0bc0221a4f8 is the first bad commit
>commit 016a255b7835ee7e49a3eba3c14ba0bc0221a4f8
>Author: Alex Deucher <alexander.deucher@amd.com>
>Date:   Tue Apr 7 09:52:42 2015 -0400
>
>    drm/radeon: only mark audio as connected if the monitor supports it (v3)
>    
>    commit 0f55db36d49d45b80eff0c0a2a498766016f458b upstream.
>    
>    Otherwise the driver may try and send audio which may confuse the
>    monitor.
>    
>    v2: set pin to NULL if no audio
>    v3: avoid crash with analog encoders
>    
>    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
>    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>>
>
>:040000 040000 de0366a6790f5c91d175bcb89cb34956bbe72b26 >bbdb5734961f824558152c7c34a840c78bc3a9a9 M	drivers

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 4285 bytes --]

[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 90681] Radeon Kernel Oops & Lockup when switching on DisplayPort attached monitor

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 298 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=90681

--- Comment #1 from Richard Bradfield <bradfirj@fstab.me> ---
Created attachment 116080
  --> https://bugs.freedesktop.org/attachment.cgi?id=116080&action=edit
lspci -nn

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 1235 bytes --]

[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 90681] Radeon Kernel Oops & Lockup when switching on DisplayPort attached monitor

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 310 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=90681

--- Comment #2 from Richard Bradfield <bradfirj@fstab.me> ---
Created attachment 116081
  --> https://bugs.freedesktop.org/attachment.cgi?id=116081&action=edit
Oops stack trace only

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 1271 bytes --]

[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 90681] Radeon Kernel Oops & Lockup when switching on DisplayPort attached monitor

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 302 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=90681

--- Comment #3 from Richard Bradfield <bradfirj@fstab.me> ---
Created attachment 116082
  --> https://bugs.freedesktop.org/attachment.cgi?id=116082&action=edit
Bisection log

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 1247 bytes --]

[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 90681] Radeon Kernel Oops & Lockup when switching on DisplayPort attached monitor

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 399 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=90681

--- Comment #4 from Richard Bradfield <bradfirj@fstab.me> ---
Created attachment 116083
  --> https://bugs.freedesktop.org/attachment.cgi?id=116083&action=edit
Culprit commit according to bisect

Sorry for the bug-spam, I wasn't sure how to add many attachments at once.

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 1471 bytes --]

[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 90681] Radeon Kernel Oops & Lockup when switching on DisplayPort attached monitor

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 340 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=90681

--- Comment #5 from Alex Deucher <alexdeucher@gmail.com> ---
Created attachment 116085
  --> https://bugs.freedesktop.org/attachment.cgi?id=116085&action=edit
possible fix

Does the attached patch fix the issue?

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 1367 bytes --]

[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 90681] Radeon Kernel Oops & Lockup when switching on DisplayPort attached monitor

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 247 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=90681

--- Comment #6 from Alex Deucher <alexdeucher@gmail.com> ---
Actually reverting the commit is probably the proper fix.

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 1072 bytes --]

[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 90681] Radeon Kernel Oops & Lockup when switching on DisplayPort attached monitor

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 357 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=90681

--- Comment #7 from Richard Bradfield <bradfirj@fstab.me> ---
Patch fixes the issue, I can try a revert as well.

With the patch applied, there's still a problem with gnome-shell crashing, but
there's no Oops in the VT any more.

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 1183 bytes --]

[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 90681] Radeon Kernel Oops & Lockup when switching on DisplayPort attached monitor

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 422 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=90681

--- Comment #8 from Richard Bradfield <bradfirj@fstab.me> ---
(In reply to Alex Deucher from comment #6)
> Actually reverting the commit is probably the proper fix.

Reverting the commit doesn't fix the issue, there is still a kernel Oops upon
hotplugging the monitor. I'll dig into the trace.

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 1318 bytes --]

[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 90681] Radeon Kernel Oops & Lockup when switching on DisplayPort attached monitor

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 225 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=90681

--- Comment #9 from Alex Deucher <alexdeucher@gmail.com> ---
How about the revert and the patch?

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 1050 bytes --]

[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 90681] Radeon Kernel Oops & Lockup when switching on DisplayPort attached monitor

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 309 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=90681

--- Comment #10 from Richard Bradfield <bradfirj@fstab.me> ---
(In reply to Alex Deucher from comment #9)
> How about the revert and the patch?

Revert and patch is working for me.

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 1206 bytes --]

[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 90681] Radeon Kernel Oops & Lockup when switching on DisplayPort attached monitor

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 271 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=90681

--- Comment #11 from Andreas Tunek <andreas.tunek@gmail.com> ---
Is this fixed? I am asking because 91253 is probably due to the same committ.

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 1100 bytes --]

[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 90681] Radeon Kernel Oops & Lockup when switching on DisplayPort attached monitor

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 758 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=90681

Alex Deucher <alexdeucher@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #12 from Alex Deucher <alexdeucher@gmail.com> ---
problematic commit reverted:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2d1c18bba15daf89d75ce475ecd2068f483aa12f

Fix committed:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=fbfd3bc7dfd7efcad2d2e52bf634f84c80a77a35

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 2571 bytes --]

[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 90681] Radeon Kernel Oops & Lockup when switching on DisplayPort attached monitor

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 218 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=90681

--- Comment #13 from Andreas Tunek <andreas.tunek@gmail.com> ---
Will this be in 4.2 rc3?

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 1099 bytes --]

[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 90681] Radeon Kernel Oops & Lockup when switching on DisplayPort attached monitor

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 293 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=90681

--- Comment #14 from Alex Deucher <alexdeucher@gmail.com> ---
(In reply to Andreas Tunek from comment #13)
> Will this be in 4.2 rc3?

Yes, they are in 4.1 as well.

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 1242 bytes --]

[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel