* [PATCH] drm/radeon: add late_register for connector
[not found] <20241003060650.18454-1-wuhoipok@gmail.com>
@ 2024-10-06 16:56 ` Christian Zigotzky
2024-10-06 17:37 ` Christophe Leroy
0 siblings, 1 reply; 7+ messages in thread
From: Christian Zigotzky @ 2024-10-06 16:56 UTC (permalink / raw)
To: Wu Hoi Pok
Cc: Christophe Leroy, Alex Deucher, Christian König, Xinhui Pan,
David Airlie, Simona Vetter,
open list:RADEON and AMDGPU DRM DRIVERS, open list:DRM DRIVERS,
open list, linuxppc-dev, R.T.Dickinson, mad skateman, hypexed,
Christian Zigotzky, Darren Stevens
[-- Attachment #1: Type: text/plain, Size: 7215 bytes --]
On 03 October 2024 at 08:06 am, Wu Hoi Pok wrote:
> This is a fix patch not tested yet,
> for a bug I introduce in previous rework of radeon driver.
> The bug is a null dereference in 'aux.dev', which is the
> 'device' not registered, resulting in kernel panic. By having
> 'late_register', the connector should be registered after
> 'drm_dev_register' automatically.
>
> Please help testing thank you.
Hello Wu Hoi Pok,
Thanks a lot for your patch. Unfortunately there is a new issue after
patching the RC1. Could you please fix the following issue?
Thanks,
Christian
---
Linux fienix 6.12.0-rc1-2-powerpc64-smp #1 SMP Fri Oct 4 08:55:45 CEST
2024 ppc64 GNU/Linux
[ 29.167145] systemd[1]: Sent message type=signal sender=n/a
destination=n/a
path=/org/freedesktop/systemd1/unit/NetworkManager_2eservice
interface=org.freedesktop.DBus.Properties member=PropertiesChanged
cookie=103 reply_cookie=0 signature=sa{sv}as error-name=n/a
error-message=n/a
[ 29.542140] systemd-journald[1301]: Successfully sent stream file
descriptor to service manager.
[ 29.561863] BUG: Kernel NULL pointer dereference on read at 0x00000000
[ 29.567156] Faulting instruction address: 0xc000000000c973c0
[ 29.571574] cpu 0x1: Vector: 300 (Data Access) at [c000000006f97640]
[ 29.576637] pc: c000000000c973c0: .drm_gem_object_free+0x20/0x70
[ 29.581708] lr: c000000000d28dd8: .radeon_bo_unref+0x58/0x90
[ 29.586428] sp: c000000006f978e0
[ 29.588695] msr: 9000000000009032
[ 29.590962] dar: 0
[ 29.591925] dsisr: 40000000
[ 29.593496] current = 0xc0000000085b1f00
[ 29.596286] paca = 0xc00000003ffff680 irqmask: 0x03
irq_happened: 0x01
[ 29.602119] pid = 1524, comm = Xorg.wrap
[ 29.605257] Linux version 6.12.0-rc1-2-powerpc64-smp
(geeko@buildhost) (powerpc64-suse-linux-gcc (SUSE Linux) 7.5.0, GNU ld
(GNU Binutils; devel:gcc / SLE-15) 2.43.1.20240828-150300.536) #1 SMP
Fri Oct 4 08:55:45 CEST 2024
[ 29.623892] enter ? for help
[ 29.625487] [c000000006f97960] c000000000d28dd8
.radeon_bo_unref+0x58/0x90
[ 29.631083] [c000000006f979e0] c000000000e287b0
.radeon_vm_fini+0x260/0x330
[ 29.636765] [c000000006f97aa0] c000000000d07c94
.radeon_driver_postclose_kms+0x1a4/0x1f0
[ 29.643579] [c000000006f97b30] c000000000c9374c
.drm_file_free+0x28c/0x300
[ 29.649174] [c000000006f97be0] c000000000c93900 .drm_release+0x90/0x170
[ 29.654508] [c000000006f97c70] c000000000304790 .__fput+0x120/0x3b0
[ 29.659495] [c000000006f97d10] c0000000002fe0fc .__se_sys_close+0x4c/0xc0
[ 29.665004] [c000000006f97d90] c000000000025bac
.system_call_exception+0x22c/0x260
[ 29.671295] [c000000006f97e10] c00000000000b554
system_call_common+0xf4/0x258
[ 29.677164] --- Exception: c00 (System Call) at 00000000006b2b48
[ 29.681876] SP (fff4b3d0) is in userspace
[ 29.684577] 1:mon> <no input ...>
[ 31.666727] Oops: Kernel access of bad area, sig: 11 [#1]
[ 31.670829] BE PAGE_SIZE=4K MMU=Hash SMP NR_CPUS=2 A-EON Amigaone X1000
[ 31.676144] Modules linked in: snd_hda_codec_idt
snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel snd_intel_dspcfg
snd_hda_codec snd_hda_core dm_mod
[ 31.688703] CPU: 1 UID: 0 PID: 1524 Comm: Xorg.wrap Not tainted
6.12.0-rc1-2-powerpc64-smp #1
[ 31.695932] Hardware name: pasemi,nemo PA6T 0x900102 A-EON Amigaone X1000
[ 31.701417] NIP: c000000000c973c0 LR: c000000000d28dd8 CTR:
c000000000d07af0
[ 31.707250] REGS: c000000006f97640 TRAP: 0300 Not tainted
(6.12.0-rc1-2-powerpc64-smp)
[ 31.714128] MSR: 9000000000009032 <SF,HV,EE,ME,IR,DR,RI> CR:
28002222 XER: 20000000
[ 31.720773] DAR: 0000000000000000 DSISR: 40000000 IRQMASK: 0
GPR00: c000000000d28dd8 c000000006f978e0
c00000000207a800 c0000000085f5468
GPR04: 0000000000000b9b 0000000000000b9a
0000000179779000 c0000000086a4b00
GPR08: 0000000000000000 0000000000000000
0000000000000001 0000000000000000
GPR12: 0000000048002202 c00000003ffff680
0000000000000000 0000000000000000
GPR16: 00000000006e3318 0000000000000001
00000000006e289c 0000000000000063
GPR20: 00000000c04064a0 00000000007f0088
00000000fff4c734 00000000007d165c
GPR24: 00000000007d1668 c000000024b6a220
c000000003588000 c000000024b6a200
GPR28: c000000003b3cc00 c000000024b6a248
c000000002d48820 c0000000085f5468
[ 31.778903] NIP [c000000000c973c0] .drm_gem_object_free+0x20/0x70
[ 31.783701] LR [c000000000d28dd8] .radeon_bo_unref+0x58/0x90
[ 31.788062] Call Trace:
[ 31.789199] [c000000006f978e0] [c000000006f97990] 0xc000000006f97990
(unreliable)
[ 31.795388] [c000000006f97960] [c000000000d28dd8]
.radeon_bo_unref+0x58/0x90
[ 31.801142] [c000000006f979e0] [c000000000e287b0]
.radeon_vm_fini+0x260/0x330
[ 31.806982] [c000000006f97aa0] [c000000000d07c94]
.radeon_driver_postclose_kms+0x1a4/0x1f0
[ 31.813954] [c000000006f97b30] [c000000000c9374c]
.drm_file_free+0x28c/0x300
[ 31.819707] [c000000006f97be0] [c000000000c93900] .drm_release+0x90/0x170
[ 31.825197] [c000000006f97c70] [c000000000304790] .__fput+0x120/0x3b0
[ 31.830342] [c000000006f97d10] [c0000000002fe0fc]
.__se_sys_close+0x4c/0xc0
[ 31.836010] [c000000006f97d90] [c000000000025bac]
.system_call_exception+0x22c/0x260
[ 31.842460] [c000000006f97e10] [c00000000000b554]
system_call_common+0xf4/0x258
[ 31.848476] --- interrupt: c00 at 0x6b2b48
[ 31.851267] NIP: 00000000006b2b48 LR: 00000000006b2b20 CTR:
0000000000000000
[ 31.857101] REGS: c000000006f97e80 TRAP: 0c00 Not tainted
(6.12.0-rc1-2-powerpc64-smp)
[ 31.863978] MSR: 100000000200f032 <HV,VEC,EE,PR,FP,ME,IR,DR,RI> CR:
28002400 XER: 00000000
[ 31.871235] IRQMASK: 0
GPR00: 0000000000000006 00000000fff4b3d0
00000000f7b7f3a0 0000000000000003
GPR04: 0000000000000000 0000000000000000
0000000000000000 0000000000000000
GPR08: 0000000000000000 0000000000000000
0000000000000000 0000000000000000
GPR12: 0000000000000000 00000000007efff4
0000000000000000 0000000000000000
GPR16: 00000000006e3318 0000000000000001
00000000006e289c 0000000000000063
GPR20: 00000000c04064a0 00000000007f0088
00000000fff4c734 00000000007d165c
GPR24: 00000000007d1668 00000000fff4b400
0000000000000001 0000000000000001
GPR28: 00000000fff4b46c 0000000000000000
00000000007bfff4 0000000000000003
[ 31.926053] NIP [00000000006b2b48] 0x6b2b48
[ 31.928930] LR [00000000006b2b20] 0x6b2b20
[ 31.931720] --- interrupt: c00
[ 31.933466] Code: ebe1fff8 7c0803a6 4e800020 60000000 7c0802a6
fbe1fff8 7c7f1b78 f8010010 f821ff81 60000000 60000000 e93f0140
<e9290000> 7d2a0074 794ad182 0b0a0000
[ 31.946913] ---[ end trace 0000000000000000 ]---
[-- Attachment #2: Type: text/html, Size: 8486 bytes --]
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] drm/radeon: add late_register for connector
2024-10-06 16:56 ` [PATCH] drm/radeon: add late_register for connector Christian Zigotzky
@ 2024-10-06 17:37 ` Christophe Leroy
2024-10-06 18:01 ` Christian Zigotzky
` (2 more replies)
0 siblings, 3 replies; 7+ messages in thread
From: Christophe Leroy @ 2024-10-06 17:37 UTC (permalink / raw)
To: Christian Zigotzky, Wu Hoi Pok
Cc: Alex Deucher, Christian König, Xinhui Pan, David Airlie,
Simona Vetter, open list:RADEON and AMDGPU DRM DRIVERS,
open list:DRM DRIVERS, open list, linuxppc-dev, R.T.Dickinson,
mad skateman, hypexed, Christian Zigotzky, Darren Stevens
Le 06/10/2024 à 18:56, Christian Zigotzky a écrit :
> On 03 October 2024 at 08:06 am, Wu Hoi Pok wrote:
>> This is a fix patch not tested yet,
>> for a bug I introduce in previous rework of radeon driver.
>> The bug is a null dereference in 'aux.dev', which is the
>> 'device' not registered, resulting in kernel panic. By having
>> 'late_register', the connector should be registered after
>> 'drm_dev_register' automatically.
>>
>> Please help testing thank you.
> Hello Wu Hoi Pok,
>
> Thanks a lot for your patch. Unfortunately there is a new issue after
> patching the RC1. Could you please fix the following issue?
>
> Thanks,
> Christian
>
> ---
>
> Linux fienix 6.12.0-rc1-2-powerpc64-smp #1 SMP Fri Oct 4 08:55:45 CEST
> 2024 ppc64 GNU/Linux
>
> [ 29.167145] systemd[1]: Sent message type=signal sender=n/a
> destination=n/a
> path=/org/freedesktop/systemd1/unit/NetworkManager_2eservice
> interface=org.freedesktop.DBus.Properties member=PropertiesChanged
> cookie=103 reply_cookie=0 signature=sa{sv}as error-name=n/a
> error-message=n/a
> [ 29.542140] systemd-journald[1301]: Successfully sent stream file
> descriptor to service manager.
> [ 29.561863] BUG: Kernel NULL pointer dereference on read at 0x00000000
> [ 29.567156] Faulting instruction address: 0xc000000000c973c0
> [ 29.571574] cpu 0x1: Vector: 300 (Data Access) at [c000000006f97640]
> [ 29.576637] pc: c000000000c973c0: .drm_gem_object_free+0x20/0x70
> [ 29.581708] lr: c000000000d28dd8: .radeon_bo_unref+0x58/0x90
> [ 29.586428] sp: c000000006f978e0
> [ 29.588695] msr: 9000000000009032
> [ 29.590962] dar: 0
> [ 29.591925] dsisr: 40000000
> [ 29.593496] current = 0xc0000000085b1f00
> [ 29.596286] paca = 0xc00000003ffff680 irqmask: 0x03
> irq_happened: 0x01
> [ 29.602119] pid = 1524, comm = Xorg.wrap
> [ 29.605257] Linux version 6.12.0-rc1-2-powerpc64-smp
> (geeko@buildhost) (powerpc64-suse-linux-gcc (SUSE Linux) 7.5.0, GNU ld
> (GNU Binutils; devel:gcc / SLE-15) 2.43.1.20240828-150300.536) #1 SMP
> Fri Oct 4 08:55:45 CEST 2024
> [ 29.623892] enter ? for help
> [ 29.625487] [c000000006f97960] c000000000d28dd8
> .radeon_bo_unref+0x58/0x90
> [ 29.631083] [c000000006f979e0] c000000000e287b0
> .radeon_vm_fini+0x260/0x330
> [ 29.636765] [c000000006f97aa0] c000000000d07c94
> .radeon_driver_postclose_kms+0x1a4/0x1f0
> [ 29.643579] [c000000006f97b30] c000000000c9374c
> .drm_file_free+0x28c/0x300
> [ 29.649174] [c000000006f97be0] c000000000c93900 .drm_release+0x90/0x170
> [ 29.654508] [c000000006f97c70] c000000000304790 .__fput+0x120/0x3b0
> [ 29.659495] [c000000006f97d10] c0000000002fe0fc .__se_sys_close+0x4c/0xc0
> [ 29.665004] [c000000006f97d90] c000000000025bac
> .system_call_exception+0x22c/0x260
> [ 29.671295] [c000000006f97e10] c00000000000b554
> system_call_common+0xf4/0x258
> [ 29.677164] --- Exception: c00 (System Call) at 00000000006b2b48
> [ 29.681876] SP (fff4b3d0) is in userspace
> [ 29.684577] 1:mon> <no input ...>
> [ 31.666727] Oops: Kernel access of bad area, sig: 11 [#1]
> [ 31.670829] BE PAGE_SIZE=4K MMU=Hash SMP NR_CPUS=2 A-EON Amigaone X1000
> [ 31.676144] Modules linked in: snd_hda_codec_idt
> snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel snd_intel_dspcfg
> snd_hda_codec snd_hda_core dm_mod
> [ 31.688703] CPU: 1 UID: 0 PID: 1524 Comm: Xorg.wrap Not tainted
> 6.12.0-rc1-2-powerpc64-smp #1
> [ 31.695932] Hardware name: pasemi,nemo PA6T 0x900102 A-EON Amigaone X1000
> [ 31.701417] NIP: c000000000c973c0 LR: c000000000d28dd8 CTR:
> c000000000d07af0
> [ 31.707250] REGS: c000000006f97640 TRAP: 0300 Not tainted
> (6.12.0-rc1-2-powerpc64-smp)
> [ 31.714128] MSR: 9000000000009032 <SF,HV,EE,ME,IR,DR,RI> CR:
> 28002222 XER: 20000000
> [ 31.720773] DAR: 0000000000000000 DSISR: 40000000 IRQMASK: 0
> GPR00: c000000000d28dd8 c000000006f978e0
> c00000000207a800 c0000000085f5468
> GPR04: 0000000000000b9b 0000000000000b9a
> 0000000179779000 c0000000086a4b00
> GPR08: 0000000000000000 0000000000000000
> 0000000000000001 0000000000000000
> GPR12: 0000000048002202 c00000003ffff680
> 0000000000000000 0000000000000000
> GPR16: 00000000006e3318 0000000000000001
> 00000000006e289c 0000000000000063
> GPR20: 00000000c04064a0 00000000007f0088
> 00000000fff4c734 00000000007d165c
> GPR24: 00000000007d1668 c000000024b6a220
> c000000003588000 c000000024b6a200
> GPR28: c000000003b3cc00 c000000024b6a248
> c000000002d48820 c0000000085f5468
> [ 31.778903] NIP [c000000000c973c0] .drm_gem_object_free+0x20/0x70
> [ 31.783701] LR [c000000000d28dd8] .radeon_bo_unref+0x58/0x90
> [ 31.788062] Call Trace:
> [ 31.789199] [c000000006f978e0] [c000000006f97990] 0xc000000006f97990
> (unreliable)
> [ 31.795388] [c000000006f97960] [c000000000d28dd8]
> .radeon_bo_unref+0x58/0x90
> [ 31.801142] [c000000006f979e0] [c000000000e287b0]
> .radeon_vm_fini+0x260/0x330
> [ 31.806982] [c000000006f97aa0] [c000000000d07c94]
> .radeon_driver_postclose_kms+0x1a4/0x1f0
> [ 31.813954] [c000000006f97b30] [c000000000c9374c]
> .drm_file_free+0x28c/0x300
> [ 31.819707] [c000000006f97be0] [c000000000c93900] .drm_release+0x90/0x170
> [ 31.825197] [c000000006f97c70] [c000000000304790] .__fput+0x120/0x3b0
> [ 31.830342] [c000000006f97d10] [c0000000002fe0fc]
> .__se_sys_close+0x4c/0xc0
> [ 31.836010] [c000000006f97d90] [c000000000025bac]
> .system_call_exception+0x22c/0x260
> [ 31.842460] [c000000006f97e10] [c00000000000b554]
> system_call_common+0xf4/0x258
> [ 31.848476] --- interrupt: c00 at 0x6b2b48
> [ 31.851267] NIP: 00000000006b2b48 LR: 00000000006b2b20 CTR:
> 0000000000000000
> [ 31.857101] REGS: c000000006f97e80 TRAP: 0c00 Not tainted
> (6.12.0-rc1-2-powerpc64-smp)
> [ 31.863978] MSR: 100000000200f032 <HV,VEC,EE,PR,FP,ME,IR,DR,RI> CR:
> 28002400 XER: 00000000
> [ 31.871235] IRQMASK: 0
> GPR00: 0000000000000006 00000000fff4b3d0
> 00000000f7b7f3a0 0000000000000003
> GPR04: 0000000000000000 0000000000000000
> 0000000000000000 0000000000000000
> GPR08: 0000000000000000 0000000000000000
> 0000000000000000 0000000000000000
> GPR12: 0000000000000000 00000000007efff4
> 0000000000000000 0000000000000000
> GPR16: 00000000006e3318 0000000000000001
> 00000000006e289c 0000000000000063
> GPR20: 00000000c04064a0 00000000007f0088
> 00000000fff4c734 00000000007d165c
> GPR24: 00000000007d1668 00000000fff4b400
> 0000000000000001 0000000000000001
> GPR28: 00000000fff4b46c 0000000000000000
> 00000000007bfff4 0000000000000003
> [ 31.926053] NIP [00000000006b2b48] 0x6b2b48
> [ 31.928930] LR [00000000006b2b20] 0x6b2b20
> [ 31.931720] --- interrupt: c00
> [ 31.933466] Code: ebe1fff8 7c0803a6 4e800020 60000000 7c0802a6
> fbe1fff8 7c7f1b78 f8010010 f821ff81 60000000 60000000 e93f0140
> <e9290000> 7d2a0074 794ad182 0b0a0000
> [ 31.946913] ---[ end trace 0000000000000000 ]---
>
>
That's a NULL pointer dereference in drm_gem_object_free().
Trying to read obj->funcs->free while obj->funcs is NULL.
Christophe
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH] drm/radeon: add late_register for connector
2024-10-06 17:37 ` Christophe Leroy
@ 2024-10-06 18:01 ` Christian Zigotzky
2024-10-07 3:19 ` Kernel doesn't boot after DRM updates (drm-next-2024-09-19) Christian Zigotzky
2024-10-07 4:49 ` [PATCH] drm/radeon: add late_register for connector Hoi Pok Wu
2024-10-07 13:17 ` Alex Deucher
2 siblings, 1 reply; 7+ messages in thread
From: Christian Zigotzky @ 2024-10-06 18:01 UTC (permalink / raw)
To: Christophe Leroy, Wu Hoi Pok
Cc: Alex Deucher, Christian König, Xinhui Pan, David Airlie,
Simona Vetter, open list:RADEON and AMDGPU DRM DRIVERS,
open list:DRM DRIVERS, open list, linuxppc-dev, R.T.Dickinson,
mad skateman, hypexed, Christian Zigotzky, Darren Stevens
On 06 October 2024 at 7:37pm, Christophe Leroy wrote:
>
> Le 06/10/2024 à 18:56, Christian Zigotzky a écrit :
>> Hello Wu Hoi Pok,
>>
>> Thanks a lot for your patch. Unfortunately there is a new issue after
>> patching the RC1. Could you please fix the following issue?
>>
>> Thanks,
>> Christian
>>
>> ---
>>
>> Linux fienix 6.12.0-rc1-2-powerpc64-smp #1 SMP Fri Oct 4 08:55:45
>> CEST 2024 ppc64 GNU/Linux
>>
>> [ 29.167145] systemd[1]: Sent message type=signal sender=n/a
>> destination=n/a
>> path=/org/freedesktop/systemd1/unit/NetworkManager_2eservice
>> interface=org.freedesktop.DBus.Properties member=PropertiesChanged
>> cookie=103 reply_cookie=0 signature=sa{sv}as error-name=n/a
>> error-message=n/a
>> [ 29.542140] systemd-journald[1301]: Successfully sent stream file
>> descriptor to service manager.
>> [ 29.561863] BUG: Kernel NULL pointer dereference on read at
>> 0x00000000
>> [ 29.567156] Faulting instruction address: 0xc000000000c973c0
>> [ 29.571574] cpu 0x1: Vector: 300 (Data Access) at [c000000006f97640]
>> [ 29.576637] pc: c000000000c973c0: .drm_gem_object_free+0x20/0x70
>> [ 29.581708] lr: c000000000d28dd8: .radeon_bo_unref+0x58/0x90
>> [ 29.586428] sp: c000000006f978e0
>> [ 29.588695] msr: 9000000000009032
>> [ 29.590962] dar: 0
>> [ 29.591925] dsisr: 40000000
>> [ 29.593496] current = 0xc0000000085b1f00
>> [ 29.596286] paca = 0xc00000003ffff680 irqmask: 0x03
>> irq_happened: 0x01
>> [ 29.602119] pid = 1524, comm = Xorg.wrap
>> [ 29.605257] Linux version 6.12.0-rc1-2-powerpc64-smp
>> (geeko@buildhost) (powerpc64-suse-linux-gcc (SUSE Linux) 7.5.0, GNU
>> ld (GNU Binutils; devel:gcc / SLE-15) 2.43.1.20240828-150300.536) #1
>> SMP Fri Oct 4 08:55:45 CEST 2024
>> [ 29.623892] enter ? for help
>> [ 29.625487] [c000000006f97960] c000000000d28dd8
>> .radeon_bo_unref+0x58/0x90
>> [ 29.631083] [c000000006f979e0] c000000000e287b0
>> .radeon_vm_fini+0x260/0x330
>> [ 29.636765] [c000000006f97aa0] c000000000d07c94
>> .radeon_driver_postclose_kms+0x1a4/0x1f0
>> [ 29.643579] [c000000006f97b30] c000000000c9374c
>> .drm_file_free+0x28c/0x300
>> [ 29.649174] [c000000006f97be0] c000000000c93900
>> .drm_release+0x90/0x170
>> [ 29.654508] [c000000006f97c70] c000000000304790 .__fput+0x120/0x3b0
>> [ 29.659495] [c000000006f97d10] c0000000002fe0fc
>> .__se_sys_close+0x4c/0xc0
>> [ 29.665004] [c000000006f97d90] c000000000025bac
>> .system_call_exception+0x22c/0x260
>> [ 29.671295] [c000000006f97e10] c00000000000b554
>> system_call_common+0xf4/0x258
>> [ 29.677164] --- Exception: c00 (System Call) at 00000000006b2b48
>> [ 29.681876] SP (fff4b3d0) is in userspace
>> [ 29.684577] 1:mon> <no input ...>
>> [ 31.666727] Oops: Kernel access of bad area, sig: 11 [#1]
>> [ 31.670829] BE PAGE_SIZE=4K MMU=Hash SMP NR_CPUS=2 A-EON Amigaone
>> X1000
>> [ 31.676144] Modules linked in: snd_hda_codec_idt
>> snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel
>> snd_intel_dspcfg snd_hda_codec snd_hda_core dm_mod
>> [ 31.688703] CPU: 1 UID: 0 PID: 1524 Comm: Xorg.wrap Not tainted
>> 6.12.0-rc1-2-powerpc64-smp #1
>> [ 31.695932] Hardware name: pasemi,nemo PA6T 0x900102 A-EON
>> Amigaone X1000
>> [ 31.701417] NIP: c000000000c973c0 LR: c000000000d28dd8 CTR:
>> c000000000d07af0
>> [ 31.707250] REGS: c000000006f97640 TRAP: 0300 Not tainted
>> (6.12.0-rc1-2-powerpc64-smp)
>> [ 31.714128] MSR: 9000000000009032 <SF,HV,EE,ME,IR,DR,RI> CR:
>> 28002222 XER: 20000000
>> [ 31.720773] DAR: 0000000000000000 DSISR: 40000000 IRQMASK: 0
>> GPR00: c000000000d28dd8 c000000006f978e0
>> c00000000207a800 c0000000085f5468
>> GPR04: 0000000000000b9b 0000000000000b9a
>> 0000000179779000 c0000000086a4b00
>> GPR08: 0000000000000000 0000000000000000
>> 0000000000000001 0000000000000000
>> GPR12: 0000000048002202 c00000003ffff680
>> 0000000000000000 0000000000000000
>> GPR16: 00000000006e3318 0000000000000001
>> 00000000006e289c 0000000000000063
>> GPR20: 00000000c04064a0 00000000007f0088
>> 00000000fff4c734 00000000007d165c
>> GPR24: 00000000007d1668 c000000024b6a220
>> c000000003588000 c000000024b6a200
>> GPR28: c000000003b3cc00 c000000024b6a248
>> c000000002d48820 c0000000085f5468
>> [ 31.778903] NIP [c000000000c973c0] .drm_gem_object_free+0x20/0x70
>> [ 31.783701] LR [c000000000d28dd8] .radeon_bo_unref+0x58/0x90
>> [ 31.788062] Call Trace:
>> [ 31.789199] [c000000006f978e0] [c000000006f97990]
>> 0xc000000006f97990 (unreliable)
>> [ 31.795388] [c000000006f97960] [c000000000d28dd8]
>> .radeon_bo_unref+0x58/0x90
>> [ 31.801142] [c000000006f979e0] [c000000000e287b0]
>> .radeon_vm_fini+0x260/0x330
>> [ 31.806982] [c000000006f97aa0] [c000000000d07c94]
>> .radeon_driver_postclose_kms+0x1a4/0x1f0
>> [ 31.813954] [c000000006f97b30] [c000000000c9374c]
>> .drm_file_free+0x28c/0x300
>> [ 31.819707] [c000000006f97be0] [c000000000c93900]
>> .drm_release+0x90/0x170
>> [ 31.825197] [c000000006f97c70] [c000000000304790] .__fput+0x120/0x3b0
>> [ 31.830342] [c000000006f97d10] [c0000000002fe0fc]
>> .__se_sys_close+0x4c/0xc0
>> [ 31.836010] [c000000006f97d90] [c000000000025bac]
>> .system_call_exception+0x22c/0x260
>> [ 31.842460] [c000000006f97e10] [c00000000000b554]
>> system_call_common+0xf4/0x258
>> [ 31.848476] --- interrupt: c00 at 0x6b2b48
>> [ 31.851267] NIP: 00000000006b2b48 LR: 00000000006b2b20 CTR:
>> 0000000000000000
>> [ 31.857101] REGS: c000000006f97e80 TRAP: 0c00 Not tainted
>> (6.12.0-rc1-2-powerpc64-smp)
>> [ 31.863978] MSR: 100000000200f032 <HV,VEC,EE,PR,FP,ME,IR,DR,RI>
>> CR: 28002400 XER: 00000000
>> [ 31.871235] IRQMASK: 0
>> GPR00: 0000000000000006 00000000fff4b3d0
>> 00000000f7b7f3a0 0000000000000003
>> GPR04: 0000000000000000 0000000000000000
>> 0000000000000000 0000000000000000
>> GPR08: 0000000000000000 0000000000000000
>> 0000000000000000 0000000000000000
>> GPR12: 0000000000000000 00000000007efff4
>> 0000000000000000 0000000000000000
>> GPR16: 00000000006e3318 0000000000000001
>> 00000000006e289c 0000000000000063
>> GPR20: 00000000c04064a0 00000000007f0088
>> 00000000fff4c734 00000000007d165c
>> GPR24: 00000000007d1668 00000000fff4b400
>> 0000000000000001 0000000000000001
>> GPR28: 00000000fff4b46c 0000000000000000
>> 00000000007bfff4 0000000000000003
>> [ 31.926053] NIP [00000000006b2b48] 0x6b2b48
>> [ 31.928930] LR [00000000006b2b20] 0x6b2b20
>> [ 31.931720] --- interrupt: c00
>> [ 31.933466] Code: ebe1fff8 7c0803a6 4e800020 60000000 7c0802a6
>> fbe1fff8 7c7f1b78 f8010010 f821ff81 60000000 60000000 e93f0140
>> <e9290000> 7d2a0074 794ad182 0b0a0000
>> [ 31.946913] ---[ end trace 0000000000000000 ]---
>>
>>
>
> That's a NULL pointer dereference in drm_gem_object_free().
>
> Trying to read obj->funcs->free while obj->funcs is NULL.
>
> Christophe
Hello Christophe,
Thank you for the hint. Could you please create a patch? I would like to
apply it to the RC2 tomorrow.
Thanks,
Christian
^ permalink raw reply [flat|nested] 7+ messages in thread
* Kernel doesn't boot after DRM updates (drm-next-2024-09-19)
2024-10-06 18:01 ` Christian Zigotzky
@ 2024-10-07 3:19 ` Christian Zigotzky
0 siblings, 0 replies; 7+ messages in thread
From: Christian Zigotzky @ 2024-10-07 3:19 UTC (permalink / raw)
To: Christophe Leroy, Wu Hoi Pok
Cc: Alex Deucher, Christian König, Xinhui Pan, David Airlie,
Simona Vetter, open list:RADEON and AMDGPU DRM DRIVERS,
open list:DRM DRIVERS, open list, linuxppc-dev, R.T.Dickinson,
mad skateman, hypexed, Christian Zigotzky, Darren Stevens
On 06 October 2024 at 8:01pm, Christian Zigotzky wrote:
> On 06 October 2024 at 7:37pm, Christophe Leroy wrote:
>>
>> Le 06/10/2024 à 18:56, Christian Zigotzky a écrit :
>>> Hello Wu Hoi Pok,
>>>
>>> Thanks a lot for your patch. Unfortunately there is a new issue
>>> after patching the RC1. Could you please fix the following issue?
>>>
>>> Thanks,
>>> Christian
>>>
>>> ---
>>>
>>> Linux fienix 6.12.0-rc1-2-powerpc64-smp #1 SMP Fri Oct 4 08:55:45
>>> CEST 2024 ppc64 GNU/Linux
>>>
>>> [ 29.167145] systemd[1]: Sent message type=signal sender=n/a
>>> destination=n/a
>>> path=/org/freedesktop/systemd1/unit/NetworkManager_2eservice
>>> interface=org.freedesktop.DBus.Properties member=PropertiesChanged
>>> cookie=103 reply_cookie=0 signature=sa{sv}as error-name=n/a
>>> error-message=n/a
>>> [ 29.542140] systemd-journald[1301]: Successfully sent stream file
>>> descriptor to service manager.
>>> [ 29.561863] BUG: Kernel NULL pointer dereference on read at
>>> 0x00000000
>>> [ 29.567156] Faulting instruction address: 0xc000000000c973c0
>>> [ 29.571574] cpu 0x1: Vector: 300 (Data Access) at [c000000006f97640]
>>> [ 29.576637] pc: c000000000c973c0: .drm_gem_object_free+0x20/0x70
>>> [ 29.581708] lr: c000000000d28dd8: .radeon_bo_unref+0x58/0x90
>>> [ 29.586428] sp: c000000006f978e0
>>> [ 29.588695] msr: 9000000000009032
>>> [ 29.590962] dar: 0
>>> [ 29.591925] dsisr: 40000000
>>> [ 29.593496] current = 0xc0000000085b1f00
>>> [ 29.596286] paca = 0xc00000003ffff680 irqmask: 0x03
>>> irq_happened: 0x01
>>> [ 29.602119] pid = 1524, comm = Xorg.wrap
>>> [ 29.605257] Linux version 6.12.0-rc1-2-powerpc64-smp
>>> (geeko@buildhost) (powerpc64-suse-linux-gcc (SUSE Linux) 7.5.0, GNU
>>> ld (GNU Binutils; devel:gcc / SLE-15) 2.43.1.20240828-150300.536) #1
>>> SMP Fri Oct 4 08:55:45 CEST 2024
>>> [ 29.623892] enter ? for help
>>> [ 29.625487] [c000000006f97960] c000000000d28dd8
>>> .radeon_bo_unref+0x58/0x90
>>> [ 29.631083] [c000000006f979e0] c000000000e287b0
>>> .radeon_vm_fini+0x260/0x330
>>> [ 29.636765] [c000000006f97aa0] c000000000d07c94
>>> .radeon_driver_postclose_kms+0x1a4/0x1f0
>>> [ 29.643579] [c000000006f97b30] c000000000c9374c
>>> .drm_file_free+0x28c/0x300
>>> [ 29.649174] [c000000006f97be0] c000000000c93900
>>> .drm_release+0x90/0x170
>>> [ 29.654508] [c000000006f97c70] c000000000304790 .__fput+0x120/0x3b0
>>> [ 29.659495] [c000000006f97d10] c0000000002fe0fc
>>> .__se_sys_close+0x4c/0xc0
>>> [ 29.665004] [c000000006f97d90] c000000000025bac
>>> .system_call_exception+0x22c/0x260
>>> [ 29.671295] [c000000006f97e10] c00000000000b554
>>> system_call_common+0xf4/0x258
>>> [ 29.677164] --- Exception: c00 (System Call) at 00000000006b2b48
>>> [ 29.681876] SP (fff4b3d0) is in userspace
>>> [ 29.684577] 1:mon> <no input ...>
>>> [ 31.666727] Oops: Kernel access of bad area, sig: 11 [#1]
>>> [ 31.670829] BE PAGE_SIZE=4K MMU=Hash SMP NR_CPUS=2 A-EON Amigaone
>>> X1000
>>> [ 31.676144] Modules linked in: snd_hda_codec_idt
>>> snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel
>>> snd_intel_dspcfg snd_hda_codec snd_hda_core dm_mod
>>> [ 31.688703] CPU: 1 UID: 0 PID: 1524 Comm: Xorg.wrap Not tainted
>>> 6.12.0-rc1-2-powerpc64-smp #1
>>> [ 31.695932] Hardware name: pasemi,nemo PA6T 0x900102 A-EON
>>> Amigaone X1000
>>> [ 31.701417] NIP: c000000000c973c0 LR: c000000000d28dd8 CTR:
>>> c000000000d07af0
>>> [ 31.707250] REGS: c000000006f97640 TRAP: 0300 Not tainted
>>> (6.12.0-rc1-2-powerpc64-smp)
>>> [ 31.714128] MSR: 9000000000009032 <SF,HV,EE,ME,IR,DR,RI> CR:
>>> 28002222 XER: 20000000
>>> [ 31.720773] DAR: 0000000000000000 DSISR: 40000000 IRQMASK: 0
>>> GPR00: c000000000d28dd8 c000000006f978e0
>>> c00000000207a800 c0000000085f5468
>>> GPR04: 0000000000000b9b 0000000000000b9a
>>> 0000000179779000 c0000000086a4b00
>>> GPR08: 0000000000000000 0000000000000000
>>> 0000000000000001 0000000000000000
>>> GPR12: 0000000048002202 c00000003ffff680
>>> 0000000000000000 0000000000000000
>>> GPR16: 00000000006e3318 0000000000000001
>>> 00000000006e289c 0000000000000063
>>> GPR20: 00000000c04064a0 00000000007f0088
>>> 00000000fff4c734 00000000007d165c
>>> GPR24: 00000000007d1668 c000000024b6a220
>>> c000000003588000 c000000024b6a200
>>> GPR28: c000000003b3cc00 c000000024b6a248
>>> c000000002d48820 c0000000085f5468
>>> [ 31.778903] NIP [c000000000c973c0] .drm_gem_object_free+0x20/0x70
>>> [ 31.783701] LR [c000000000d28dd8] .radeon_bo_unref+0x58/0x90
>>> [ 31.788062] Call Trace:
>>> [ 31.789199] [c000000006f978e0] [c000000006f97990]
>>> 0xc000000006f97990 (unreliable)
>>> [ 31.795388] [c000000006f97960] [c000000000d28dd8]
>>> .radeon_bo_unref+0x58/0x90
>>> [ 31.801142] [c000000006f979e0] [c000000000e287b0]
>>> .radeon_vm_fini+0x260/0x330
>>> [ 31.806982] [c000000006f97aa0] [c000000000d07c94]
>>> .radeon_driver_postclose_kms+0x1a4/0x1f0
>>> [ 31.813954] [c000000006f97b30] [c000000000c9374c]
>>> .drm_file_free+0x28c/0x300
>>> [ 31.819707] [c000000006f97be0] [c000000000c93900]
>>> .drm_release+0x90/0x170
>>> [ 31.825197] [c000000006f97c70] [c000000000304790]
>>> .__fput+0x120/0x3b0
>>> [ 31.830342] [c000000006f97d10] [c0000000002fe0fc]
>>> .__se_sys_close+0x4c/0xc0
>>> [ 31.836010] [c000000006f97d90] [c000000000025bac]
>>> .system_call_exception+0x22c/0x260
>>> [ 31.842460] [c000000006f97e10] [c00000000000b554]
>>> system_call_common+0xf4/0x258
>>> [ 31.848476] --- interrupt: c00 at 0x6b2b48
>>> [ 31.851267] NIP: 00000000006b2b48 LR: 00000000006b2b20 CTR:
>>> 0000000000000000
>>> [ 31.857101] REGS: c000000006f97e80 TRAP: 0c00 Not tainted
>>> (6.12.0-rc1-2-powerpc64-smp)
>>> [ 31.863978] MSR: 100000000200f032 <HV,VEC,EE,PR,FP,ME,IR,DR,RI>
>>> CR: 28002400 XER: 00000000
>>> [ 31.871235] IRQMASK: 0
>>> GPR00: 0000000000000006 00000000fff4b3d0
>>> 00000000f7b7f3a0 0000000000000003
>>> GPR04: 0000000000000000 0000000000000000
>>> 0000000000000000 0000000000000000
>>> GPR08: 0000000000000000 0000000000000000
>>> 0000000000000000 0000000000000000
>>> GPR12: 0000000000000000 00000000007efff4
>>> 0000000000000000 0000000000000000
>>> GPR16: 00000000006e3318 0000000000000001
>>> 00000000006e289c 0000000000000063
>>> GPR20: 00000000c04064a0 00000000007f0088
>>> 00000000fff4c734 00000000007d165c
>>> GPR24: 00000000007d1668 00000000fff4b400
>>> 0000000000000001 0000000000000001
>>> GPR28: 00000000fff4b46c 0000000000000000
>>> 00000000007bfff4 0000000000000003
>>> [ 31.926053] NIP [00000000006b2b48] 0x6b2b48
>>> [ 31.928930] LR [00000000006b2b20] 0x6b2b20
>>> [ 31.931720] --- interrupt: c00
>>> [ 31.933466] Code: ebe1fff8 7c0803a6 4e800020 60000000 7c0802a6
>>> fbe1fff8 7c7f1b78 f8010010 f821ff81 60000000 60000000 e93f0140
>>> <e9290000> 7d2a0074 794ad182 0b0a0000
>>> [ 31.946913] ---[ end trace 0000000000000000 ]---
>>>
>>>
>>
>> That's a NULL pointer dereference in drm_gem_object_free().
>>
>> Trying to read obj->funcs->free while obj->funcs is NULL.
>>
>> Christophe
>
> Hello Christophe,
>
> Thank you for the hint. Could you please create a patch? I would like
> to apply it to the RC2 tomorrow.
>
> Thanks,
> Christian
Hello Wu Hoi Pok,
Reverting of the drm-next-2024-09-19 updates solves the issue.
Please check the drm-next-2024-09-19 updates.
Thanks,
Christian
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] drm/radeon: add late_register for connector
2024-10-06 17:37 ` Christophe Leroy
2024-10-06 18:01 ` Christian Zigotzky
@ 2024-10-07 4:49 ` Hoi Pok Wu
2024-10-07 14:08 ` Christian König
2024-10-07 13:17 ` Alex Deucher
2 siblings, 1 reply; 7+ messages in thread
From: Hoi Pok Wu @ 2024-10-07 4:49 UTC (permalink / raw)
To: Christophe Leroy
Cc: Christian Zigotzky, Alex Deucher, Christian König,
Xinhui Pan, David Airlie, Simona Vetter,
open list:RADEON and AMDGPU DRM DRIVERS, open list:DRM DRIVERS,
open list, linuxppc-dev, R.T.Dickinson, mad skateman, hypexed,
Christian Zigotzky, Darren Stevens
Thank you. I am looking at the problem now.
On Mon, Oct 7, 2024 at 1:37 AM Christophe Leroy
<christophe.leroy@csgroup.eu> wrote:
>
>
>
> Le 06/10/2024 à 18:56, Christian Zigotzky a écrit :
> > On 03 October 2024 at 08:06 am, Wu Hoi Pok wrote:
> >> This is a fix patch not tested yet,
> >> for a bug I introduce in previous rework of radeon driver.
> >> The bug is a null dereference in 'aux.dev', which is the
> >> 'device' not registered, resulting in kernel panic. By having
> >> 'late_register', the connector should be registered after
> >> 'drm_dev_register' automatically.
> >>
> >> Please help testing thank you.
> > Hello Wu Hoi Pok,
> >
> > Thanks a lot for your patch. Unfortunately there is a new issue after
> > patching the RC1. Could you please fix the following issue?
> >
> > Thanks,
> > Christian
> >
> > ---
> >
> > Linux fienix 6.12.0-rc1-2-powerpc64-smp #1 SMP Fri Oct 4 08:55:45 CEST
> > 2024 ppc64 GNU/Linux
> >
> > [ 29.167145] systemd[1]: Sent message type=signal sender=n/a
> > destination=n/a
> > path=/org/freedesktop/systemd1/unit/NetworkManager_2eservice
> > interface=org.freedesktop.DBus.Properties member=PropertiesChanged
> > cookie=103 reply_cookie=0 signature=sa{sv}as error-name=n/a
> > error-message=n/a
> > [ 29.542140] systemd-journald[1301]: Successfully sent stream file
> > descriptor to service manager.
> > [ 29.561863] BUG: Kernel NULL pointer dereference on read at 0x00000000
> > [ 29.567156] Faulting instruction address: 0xc000000000c973c0
> > [ 29.571574] cpu 0x1: Vector: 300 (Data Access) at [c000000006f97640]
> > [ 29.576637] pc: c000000000c973c0: .drm_gem_object_free+0x20/0x70
> > [ 29.581708] lr: c000000000d28dd8: .radeon_bo_unref+0x58/0x90
> > [ 29.586428] sp: c000000006f978e0
> > [ 29.588695] msr: 9000000000009032
> > [ 29.590962] dar: 0
> > [ 29.591925] dsisr: 40000000
> > [ 29.593496] current = 0xc0000000085b1f00
> > [ 29.596286] paca = 0xc00000003ffff680 irqmask: 0x03
> > irq_happened: 0x01
> > [ 29.602119] pid = 1524, comm = Xorg.wrap
> > [ 29.605257] Linux version 6.12.0-rc1-2-powerpc64-smp
> > (geeko@buildhost) (powerpc64-suse-linux-gcc (SUSE Linux) 7.5.0, GNU ld
> > (GNU Binutils; devel:gcc / SLE-15) 2.43.1.20240828-150300.536) #1 SMP
> > Fri Oct 4 08:55:45 CEST 2024
> > [ 29.623892] enter ? for help
> > [ 29.625487] [c000000006f97960] c000000000d28dd8
> > .radeon_bo_unref+0x58/0x90
> > [ 29.631083] [c000000006f979e0] c000000000e287b0
> > .radeon_vm_fini+0x260/0x330
> > [ 29.636765] [c000000006f97aa0] c000000000d07c94
> > .radeon_driver_postclose_kms+0x1a4/0x1f0
> > [ 29.643579] [c000000006f97b30] c000000000c9374c
> > .drm_file_free+0x28c/0x300
> > [ 29.649174] [c000000006f97be0] c000000000c93900 .drm_release+0x90/0x170
> > [ 29.654508] [c000000006f97c70] c000000000304790 .__fput+0x120/0x3b0
> > [ 29.659495] [c000000006f97d10] c0000000002fe0fc .__se_sys_close+0x4c/0xc0
> > [ 29.665004] [c000000006f97d90] c000000000025bac
> > .system_call_exception+0x22c/0x260
> > [ 29.671295] [c000000006f97e10] c00000000000b554
> > system_call_common+0xf4/0x258
> > [ 29.677164] --- Exception: c00 (System Call) at 00000000006b2b48
> > [ 29.681876] SP (fff4b3d0) is in userspace
> > [ 29.684577] 1:mon> <no input ...>
> > [ 31.666727] Oops: Kernel access of bad area, sig: 11 [#1]
> > [ 31.670829] BE PAGE_SIZE=4K MMU=Hash SMP NR_CPUS=2 A-EON Amigaone X1000
> > [ 31.676144] Modules linked in: snd_hda_codec_idt
> > snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel snd_intel_dspcfg
> > snd_hda_codec snd_hda_core dm_mod
> > [ 31.688703] CPU: 1 UID: 0 PID: 1524 Comm: Xorg.wrap Not tainted
> > 6.12.0-rc1-2-powerpc64-smp #1
> > [ 31.695932] Hardware name: pasemi,nemo PA6T 0x900102 A-EON Amigaone X1000
> > [ 31.701417] NIP: c000000000c973c0 LR: c000000000d28dd8 CTR:
> > c000000000d07af0
> > [ 31.707250] REGS: c000000006f97640 TRAP: 0300 Not tainted
> > (6.12.0-rc1-2-powerpc64-smp)
> > [ 31.714128] MSR: 9000000000009032 <SF,HV,EE,ME,IR,DR,RI> CR:
> > 28002222 XER: 20000000
> > [ 31.720773] DAR: 0000000000000000 DSISR: 40000000 IRQMASK: 0
> > GPR00: c000000000d28dd8 c000000006f978e0
> > c00000000207a800 c0000000085f5468
> > GPR04: 0000000000000b9b 0000000000000b9a
> > 0000000179779000 c0000000086a4b00
> > GPR08: 0000000000000000 0000000000000000
> > 0000000000000001 0000000000000000
> > GPR12: 0000000048002202 c00000003ffff680
> > 0000000000000000 0000000000000000
> > GPR16: 00000000006e3318 0000000000000001
> > 00000000006e289c 0000000000000063
> > GPR20: 00000000c04064a0 00000000007f0088
> > 00000000fff4c734 00000000007d165c
> > GPR24: 00000000007d1668 c000000024b6a220
> > c000000003588000 c000000024b6a200
> > GPR28: c000000003b3cc00 c000000024b6a248
> > c000000002d48820 c0000000085f5468
> > [ 31.778903] NIP [c000000000c973c0] .drm_gem_object_free+0x20/0x70
> > [ 31.783701] LR [c000000000d28dd8] .radeon_bo_unref+0x58/0x90
> > [ 31.788062] Call Trace:
> > [ 31.789199] [c000000006f978e0] [c000000006f97990] 0xc000000006f97990
> > (unreliable)
> > [ 31.795388] [c000000006f97960] [c000000000d28dd8]
> > .radeon_bo_unref+0x58/0x90
> > [ 31.801142] [c000000006f979e0] [c000000000e287b0]
> > .radeon_vm_fini+0x260/0x330
> > [ 31.806982] [c000000006f97aa0] [c000000000d07c94]
> > .radeon_driver_postclose_kms+0x1a4/0x1f0
> > [ 31.813954] [c000000006f97b30] [c000000000c9374c]
> > .drm_file_free+0x28c/0x300
> > [ 31.819707] [c000000006f97be0] [c000000000c93900] .drm_release+0x90/0x170
> > [ 31.825197] [c000000006f97c70] [c000000000304790] .__fput+0x120/0x3b0
> > [ 31.830342] [c000000006f97d10] [c0000000002fe0fc]
> > .__se_sys_close+0x4c/0xc0
> > [ 31.836010] [c000000006f97d90] [c000000000025bac]
> > .system_call_exception+0x22c/0x260
> > [ 31.842460] [c000000006f97e10] [c00000000000b554]
> > system_call_common+0xf4/0x258
> > [ 31.848476] --- interrupt: c00 at 0x6b2b48
> > [ 31.851267] NIP: 00000000006b2b48 LR: 00000000006b2b20 CTR:
> > 0000000000000000
> > [ 31.857101] REGS: c000000006f97e80 TRAP: 0c00 Not tainted
> > (6.12.0-rc1-2-powerpc64-smp)
> > [ 31.863978] MSR: 100000000200f032 <HV,VEC,EE,PR,FP,ME,IR,DR,RI> CR:
> > 28002400 XER: 00000000
> > [ 31.871235] IRQMASK: 0
> > GPR00: 0000000000000006 00000000fff4b3d0
> > 00000000f7b7f3a0 0000000000000003
> > GPR04: 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > GPR08: 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > GPR12: 0000000000000000 00000000007efff4
> > 0000000000000000 0000000000000000
> > GPR16: 00000000006e3318 0000000000000001
> > 00000000006e289c 0000000000000063
> > GPR20: 00000000c04064a0 00000000007f0088
> > 00000000fff4c734 00000000007d165c
> > GPR24: 00000000007d1668 00000000fff4b400
> > 0000000000000001 0000000000000001
> > GPR28: 00000000fff4b46c 0000000000000000
> > 00000000007bfff4 0000000000000003
> > [ 31.926053] NIP [00000000006b2b48] 0x6b2b48
> > [ 31.928930] LR [00000000006b2b20] 0x6b2b20
> > [ 31.931720] --- interrupt: c00
> > [ 31.933466] Code: ebe1fff8 7c0803a6 4e800020 60000000 7c0802a6
> > fbe1fff8 7c7f1b78 f8010010 f821ff81 60000000 60000000 e93f0140
> > <e9290000> 7d2a0074 794ad182 0b0a0000
> > [ 31.946913] ---[ end trace 0000000000000000 ]---
> >
> >
>
> That's a NULL pointer dereference in drm_gem_object_free().
>
> Trying to read obj->funcs->free while obj->funcs is NULL.
>
> Christophe
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] drm/radeon: add late_register for connector
2024-10-06 17:37 ` Christophe Leroy
2024-10-06 18:01 ` Christian Zigotzky
2024-10-07 4:49 ` [PATCH] drm/radeon: add late_register for connector Hoi Pok Wu
@ 2024-10-07 13:17 ` Alex Deucher
2 siblings, 0 replies; 7+ messages in thread
From: Alex Deucher @ 2024-10-07 13:17 UTC (permalink / raw)
To: Christophe Leroy
Cc: Christian Zigotzky, Wu Hoi Pok, Alex Deucher,
Christian König, Xinhui Pan, David Airlie, Simona Vetter,
open list:RADEON and AMDGPU DRM DRIVERS, open list:DRM DRIVERS,
open list, linuxppc-dev, R.T.Dickinson, mad skateman, hypexed,
Christian Zigotzky, Darren Stevens
This is a different issue related to the radeon ttm to gem conversion.
@Christian Koenig is working on the fix.
Alex
On Mon, Oct 7, 2024 at 4:23 AM Christophe Leroy
<christophe.leroy@csgroup.eu> wrote:
>
>
>
> Le 06/10/2024 à 18:56, Christian Zigotzky a écrit :
> > On 03 October 2024 at 08:06 am, Wu Hoi Pok wrote:
> >> This is a fix patch not tested yet,
> >> for a bug I introduce in previous rework of radeon driver.
> >> The bug is a null dereference in 'aux.dev', which is the
> >> 'device' not registered, resulting in kernel panic. By having
> >> 'late_register', the connector should be registered after
> >> 'drm_dev_register' automatically.
> >>
> >> Please help testing thank you.
> > Hello Wu Hoi Pok,
> >
> > Thanks a lot for your patch. Unfortunately there is a new issue after
> > patching the RC1. Could you please fix the following issue?
> >
> > Thanks,
> > Christian
> >
> > ---
> >
> > Linux fienix 6.12.0-rc1-2-powerpc64-smp #1 SMP Fri Oct 4 08:55:45 CEST
> > 2024 ppc64 GNU/Linux
> >
> > [ 29.167145] systemd[1]: Sent message type=signal sender=n/a
> > destination=n/a
> > path=/org/freedesktop/systemd1/unit/NetworkManager_2eservice
> > interface=org.freedesktop.DBus.Properties member=PropertiesChanged
> > cookie=103 reply_cookie=0 signature=sa{sv}as error-name=n/a
> > error-message=n/a
> > [ 29.542140] systemd-journald[1301]: Successfully sent stream file
> > descriptor to service manager.
> > [ 29.561863] BUG: Kernel NULL pointer dereference on read at 0x00000000
> > [ 29.567156] Faulting instruction address: 0xc000000000c973c0
> > [ 29.571574] cpu 0x1: Vector: 300 (Data Access) at [c000000006f97640]
> > [ 29.576637] pc: c000000000c973c0: .drm_gem_object_free+0x20/0x70
> > [ 29.581708] lr: c000000000d28dd8: .radeon_bo_unref+0x58/0x90
> > [ 29.586428] sp: c000000006f978e0
> > [ 29.588695] msr: 9000000000009032
> > [ 29.590962] dar: 0
> > [ 29.591925] dsisr: 40000000
> > [ 29.593496] current = 0xc0000000085b1f00
> > [ 29.596286] paca = 0xc00000003ffff680 irqmask: 0x03
> > irq_happened: 0x01
> > [ 29.602119] pid = 1524, comm = Xorg.wrap
> > [ 29.605257] Linux version 6.12.0-rc1-2-powerpc64-smp
> > (geeko@buildhost) (powerpc64-suse-linux-gcc (SUSE Linux) 7.5.0, GNU ld
> > (GNU Binutils; devel:gcc / SLE-15) 2.43.1.20240828-150300.536) #1 SMP
> > Fri Oct 4 08:55:45 CEST 2024
> > [ 29.623892] enter ? for help
> > [ 29.625487] [c000000006f97960] c000000000d28dd8
> > .radeon_bo_unref+0x58/0x90
> > [ 29.631083] [c000000006f979e0] c000000000e287b0
> > .radeon_vm_fini+0x260/0x330
> > [ 29.636765] [c000000006f97aa0] c000000000d07c94
> > .radeon_driver_postclose_kms+0x1a4/0x1f0
> > [ 29.643579] [c000000006f97b30] c000000000c9374c
> > .drm_file_free+0x28c/0x300
> > [ 29.649174] [c000000006f97be0] c000000000c93900 .drm_release+0x90/0x170
> > [ 29.654508] [c000000006f97c70] c000000000304790 .__fput+0x120/0x3b0
> > [ 29.659495] [c000000006f97d10] c0000000002fe0fc .__se_sys_close+0x4c/0xc0
> > [ 29.665004] [c000000006f97d90] c000000000025bac
> > .system_call_exception+0x22c/0x260
> > [ 29.671295] [c000000006f97e10] c00000000000b554
> > system_call_common+0xf4/0x258
> > [ 29.677164] --- Exception: c00 (System Call) at 00000000006b2b48
> > [ 29.681876] SP (fff4b3d0) is in userspace
> > [ 29.684577] 1:mon> <no input ...>
> > [ 31.666727] Oops: Kernel access of bad area, sig: 11 [#1]
> > [ 31.670829] BE PAGE_SIZE=4K MMU=Hash SMP NR_CPUS=2 A-EON Amigaone X1000
> > [ 31.676144] Modules linked in: snd_hda_codec_idt
> > snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel snd_intel_dspcfg
> > snd_hda_codec snd_hda_core dm_mod
> > [ 31.688703] CPU: 1 UID: 0 PID: 1524 Comm: Xorg.wrap Not tainted
> > 6.12.0-rc1-2-powerpc64-smp #1
> > [ 31.695932] Hardware name: pasemi,nemo PA6T 0x900102 A-EON Amigaone X1000
> > [ 31.701417] NIP: c000000000c973c0 LR: c000000000d28dd8 CTR:
> > c000000000d07af0
> > [ 31.707250] REGS: c000000006f97640 TRAP: 0300 Not tainted
> > (6.12.0-rc1-2-powerpc64-smp)
> > [ 31.714128] MSR: 9000000000009032 <SF,HV,EE,ME,IR,DR,RI> CR:
> > 28002222 XER: 20000000
> > [ 31.720773] DAR: 0000000000000000 DSISR: 40000000 IRQMASK: 0
> > GPR00: c000000000d28dd8 c000000006f978e0
> > c00000000207a800 c0000000085f5468
> > GPR04: 0000000000000b9b 0000000000000b9a
> > 0000000179779000 c0000000086a4b00
> > GPR08: 0000000000000000 0000000000000000
> > 0000000000000001 0000000000000000
> > GPR12: 0000000048002202 c00000003ffff680
> > 0000000000000000 0000000000000000
> > GPR16: 00000000006e3318 0000000000000001
> > 00000000006e289c 0000000000000063
> > GPR20: 00000000c04064a0 00000000007f0088
> > 00000000fff4c734 00000000007d165c
> > GPR24: 00000000007d1668 c000000024b6a220
> > c000000003588000 c000000024b6a200
> > GPR28: c000000003b3cc00 c000000024b6a248
> > c000000002d48820 c0000000085f5468
> > [ 31.778903] NIP [c000000000c973c0] .drm_gem_object_free+0x20/0x70
> > [ 31.783701] LR [c000000000d28dd8] .radeon_bo_unref+0x58/0x90
> > [ 31.788062] Call Trace:
> > [ 31.789199] [c000000006f978e0] [c000000006f97990] 0xc000000006f97990
> > (unreliable)
> > [ 31.795388] [c000000006f97960] [c000000000d28dd8]
> > .radeon_bo_unref+0x58/0x90
> > [ 31.801142] [c000000006f979e0] [c000000000e287b0]
> > .radeon_vm_fini+0x260/0x330
> > [ 31.806982] [c000000006f97aa0] [c000000000d07c94]
> > .radeon_driver_postclose_kms+0x1a4/0x1f0
> > [ 31.813954] [c000000006f97b30] [c000000000c9374c]
> > .drm_file_free+0x28c/0x300
> > [ 31.819707] [c000000006f97be0] [c000000000c93900] .drm_release+0x90/0x170
> > [ 31.825197] [c000000006f97c70] [c000000000304790] .__fput+0x120/0x3b0
> > [ 31.830342] [c000000006f97d10] [c0000000002fe0fc]
> > .__se_sys_close+0x4c/0xc0
> > [ 31.836010] [c000000006f97d90] [c000000000025bac]
> > .system_call_exception+0x22c/0x260
> > [ 31.842460] [c000000006f97e10] [c00000000000b554]
> > system_call_common+0xf4/0x258
> > [ 31.848476] --- interrupt: c00 at 0x6b2b48
> > [ 31.851267] NIP: 00000000006b2b48 LR: 00000000006b2b20 CTR:
> > 0000000000000000
> > [ 31.857101] REGS: c000000006f97e80 TRAP: 0c00 Not tainted
> > (6.12.0-rc1-2-powerpc64-smp)
> > [ 31.863978] MSR: 100000000200f032 <HV,VEC,EE,PR,FP,ME,IR,DR,RI> CR:
> > 28002400 XER: 00000000
> > [ 31.871235] IRQMASK: 0
> > GPR00: 0000000000000006 00000000fff4b3d0
> > 00000000f7b7f3a0 0000000000000003
> > GPR04: 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > GPR08: 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > GPR12: 0000000000000000 00000000007efff4
> > 0000000000000000 0000000000000000
> > GPR16: 00000000006e3318 0000000000000001
> > 00000000006e289c 0000000000000063
> > GPR20: 00000000c04064a0 00000000007f0088
> > 00000000fff4c734 00000000007d165c
> > GPR24: 00000000007d1668 00000000fff4b400
> > 0000000000000001 0000000000000001
> > GPR28: 00000000fff4b46c 0000000000000000
> > 00000000007bfff4 0000000000000003
> > [ 31.926053] NIP [00000000006b2b48] 0x6b2b48
> > [ 31.928930] LR [00000000006b2b20] 0x6b2b20
> > [ 31.931720] --- interrupt: c00
> > [ 31.933466] Code: ebe1fff8 7c0803a6 4e800020 60000000 7c0802a6
> > fbe1fff8 7c7f1b78 f8010010 f821ff81 60000000 60000000 e93f0140
> > <e9290000> 7d2a0074 794ad182 0b0a0000
> > [ 31.946913] ---[ end trace 0000000000000000 ]---
> >
> >
>
> That's a NULL pointer dereference in drm_gem_object_free().
>
> Trying to read obj->funcs->free while obj->funcs is NULL.
>
> Christophe
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] drm/radeon: add late_register for connector
2024-10-07 4:49 ` [PATCH] drm/radeon: add late_register for connector Hoi Pok Wu
@ 2024-10-07 14:08 ` Christian König
0 siblings, 0 replies; 7+ messages in thread
From: Christian König @ 2024-10-07 14:08 UTC (permalink / raw)
To: Hoi Pok Wu, Christophe Leroy
Cc: Christian Zigotzky, Alex Deucher, Xinhui Pan, David Airlie,
Simona Vetter, open list:RADEON and AMDGPU DRM DRIVERS,
open list:DRM DRIVERS, open list, linuxppc-dev, R.T.Dickinson,
mad skateman, hypexed, Christian Zigotzky, Darren Stevens
That's the issue I was working on, give me 10 minutes to send out the fix.
Regards,
Christian.
Am 07.10.24 um 06:49 schrieb Hoi Pok Wu:
> Thank you. I am looking at the problem now.
>
> On Mon, Oct 7, 2024 at 1:37 AM Christophe Leroy
> <christophe.leroy@csgroup.eu> wrote:
>>
>>
>> Le 06/10/2024 à 18:56, Christian Zigotzky a écrit :
>>> On 03 October 2024 at 08:06 am, Wu Hoi Pok wrote:
>>>> This is a fix patch not tested yet,
>>>> for a bug I introduce in previous rework of radeon driver.
>>>> The bug is a null dereference in 'aux.dev', which is the
>>>> 'device' not registered, resulting in kernel panic. By having
>>>> 'late_register', the connector should be registered after
>>>> 'drm_dev_register' automatically.
>>>>
>>>> Please help testing thank you.
>>> Hello Wu Hoi Pok,
>>>
>>> Thanks a lot for your patch. Unfortunately there is a new issue after
>>> patching the RC1. Could you please fix the following issue?
>>>
>>> Thanks,
>>> Christian
>>>
>>> ---
>>>
>>> Linux fienix 6.12.0-rc1-2-powerpc64-smp #1 SMP Fri Oct 4 08:55:45 CEST
>>> 2024 ppc64 GNU/Linux
>>>
>>> [ 29.167145] systemd[1]: Sent message type=signal sender=n/a
>>> destination=n/a
>>> path=/org/freedesktop/systemd1/unit/NetworkManager_2eservice
>>> interface=org.freedesktop.DBus.Properties member=PropertiesChanged
>>> cookie=103 reply_cookie=0 signature=sa{sv}as error-name=n/a
>>> error-message=n/a
>>> [ 29.542140] systemd-journald[1301]: Successfully sent stream file
>>> descriptor to service manager.
>>> [ 29.561863] BUG: Kernel NULL pointer dereference on read at 0x00000000
>>> [ 29.567156] Faulting instruction address: 0xc000000000c973c0
>>> [ 29.571574] cpu 0x1: Vector: 300 (Data Access) at [c000000006f97640]
>>> [ 29.576637] pc: c000000000c973c0: .drm_gem_object_free+0x20/0x70
>>> [ 29.581708] lr: c000000000d28dd8: .radeon_bo_unref+0x58/0x90
>>> [ 29.586428] sp: c000000006f978e0
>>> [ 29.588695] msr: 9000000000009032
>>> [ 29.590962] dar: 0
>>> [ 29.591925] dsisr: 40000000
>>> [ 29.593496] current = 0xc0000000085b1f00
>>> [ 29.596286] paca = 0xc00000003ffff680 irqmask: 0x03
>>> irq_happened: 0x01
>>> [ 29.602119] pid = 1524, comm = Xorg.wrap
>>> [ 29.605257] Linux version 6.12.0-rc1-2-powerpc64-smp
>>> (geeko@buildhost) (powerpc64-suse-linux-gcc (SUSE Linux) 7.5.0, GNU ld
>>> (GNU Binutils; devel:gcc / SLE-15) 2.43.1.20240828-150300.536) #1 SMP
>>> Fri Oct 4 08:55:45 CEST 2024
>>> [ 29.623892] enter ? for help
>>> [ 29.625487] [c000000006f97960] c000000000d28dd8
>>> .radeon_bo_unref+0x58/0x90
>>> [ 29.631083] [c000000006f979e0] c000000000e287b0
>>> .radeon_vm_fini+0x260/0x330
>>> [ 29.636765] [c000000006f97aa0] c000000000d07c94
>>> .radeon_driver_postclose_kms+0x1a4/0x1f0
>>> [ 29.643579] [c000000006f97b30] c000000000c9374c
>>> .drm_file_free+0x28c/0x300
>>> [ 29.649174] [c000000006f97be0] c000000000c93900 .drm_release+0x90/0x170
>>> [ 29.654508] [c000000006f97c70] c000000000304790 .__fput+0x120/0x3b0
>>> [ 29.659495] [c000000006f97d10] c0000000002fe0fc .__se_sys_close+0x4c/0xc0
>>> [ 29.665004] [c000000006f97d90] c000000000025bac
>>> .system_call_exception+0x22c/0x260
>>> [ 29.671295] [c000000006f97e10] c00000000000b554
>>> system_call_common+0xf4/0x258
>>> [ 29.677164] --- Exception: c00 (System Call) at 00000000006b2b48
>>> [ 29.681876] SP (fff4b3d0) is in userspace
>>> [ 29.684577] 1:mon> <no input ...>
>>> [ 31.666727] Oops: Kernel access of bad area, sig: 11 [#1]
>>> [ 31.670829] BE PAGE_SIZE=4K MMU=Hash SMP NR_CPUS=2 A-EON Amigaone X1000
>>> [ 31.676144] Modules linked in: snd_hda_codec_idt
>>> snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel snd_intel_dspcfg
>>> snd_hda_codec snd_hda_core dm_mod
>>> [ 31.688703] CPU: 1 UID: 0 PID: 1524 Comm: Xorg.wrap Not tainted
>>> 6.12.0-rc1-2-powerpc64-smp #1
>>> [ 31.695932] Hardware name: pasemi,nemo PA6T 0x900102 A-EON Amigaone X1000
>>> [ 31.701417] NIP: c000000000c973c0 LR: c000000000d28dd8 CTR:
>>> c000000000d07af0
>>> [ 31.707250] REGS: c000000006f97640 TRAP: 0300 Not tainted
>>> (6.12.0-rc1-2-powerpc64-smp)
>>> [ 31.714128] MSR: 9000000000009032 <SF,HV,EE,ME,IR,DR,RI> CR:
>>> 28002222 XER: 20000000
>>> [ 31.720773] DAR: 0000000000000000 DSISR: 40000000 IRQMASK: 0
>>> GPR00: c000000000d28dd8 c000000006f978e0
>>> c00000000207a800 c0000000085f5468
>>> GPR04: 0000000000000b9b 0000000000000b9a
>>> 0000000179779000 c0000000086a4b00
>>> GPR08: 0000000000000000 0000000000000000
>>> 0000000000000001 0000000000000000
>>> GPR12: 0000000048002202 c00000003ffff680
>>> 0000000000000000 0000000000000000
>>> GPR16: 00000000006e3318 0000000000000001
>>> 00000000006e289c 0000000000000063
>>> GPR20: 00000000c04064a0 00000000007f0088
>>> 00000000fff4c734 00000000007d165c
>>> GPR24: 00000000007d1668 c000000024b6a220
>>> c000000003588000 c000000024b6a200
>>> GPR28: c000000003b3cc00 c000000024b6a248
>>> c000000002d48820 c0000000085f5468
>>> [ 31.778903] NIP [c000000000c973c0] .drm_gem_object_free+0x20/0x70
>>> [ 31.783701] LR [c000000000d28dd8] .radeon_bo_unref+0x58/0x90
>>> [ 31.788062] Call Trace:
>>> [ 31.789199] [c000000006f978e0] [c000000006f97990] 0xc000000006f97990
>>> (unreliable)
>>> [ 31.795388] [c000000006f97960] [c000000000d28dd8]
>>> .radeon_bo_unref+0x58/0x90
>>> [ 31.801142] [c000000006f979e0] [c000000000e287b0]
>>> .radeon_vm_fini+0x260/0x330
>>> [ 31.806982] [c000000006f97aa0] [c000000000d07c94]
>>> .radeon_driver_postclose_kms+0x1a4/0x1f0
>>> [ 31.813954] [c000000006f97b30] [c000000000c9374c]
>>> .drm_file_free+0x28c/0x300
>>> [ 31.819707] [c000000006f97be0] [c000000000c93900] .drm_release+0x90/0x170
>>> [ 31.825197] [c000000006f97c70] [c000000000304790] .__fput+0x120/0x3b0
>>> [ 31.830342] [c000000006f97d10] [c0000000002fe0fc]
>>> .__se_sys_close+0x4c/0xc0
>>> [ 31.836010] [c000000006f97d90] [c000000000025bac]
>>> .system_call_exception+0x22c/0x260
>>> [ 31.842460] [c000000006f97e10] [c00000000000b554]
>>> system_call_common+0xf4/0x258
>>> [ 31.848476] --- interrupt: c00 at 0x6b2b48
>>> [ 31.851267] NIP: 00000000006b2b48 LR: 00000000006b2b20 CTR:
>>> 0000000000000000
>>> [ 31.857101] REGS: c000000006f97e80 TRAP: 0c00 Not tainted
>>> (6.12.0-rc1-2-powerpc64-smp)
>>> [ 31.863978] MSR: 100000000200f032 <HV,VEC,EE,PR,FP,ME,IR,DR,RI> CR:
>>> 28002400 XER: 00000000
>>> [ 31.871235] IRQMASK: 0
>>> GPR00: 0000000000000006 00000000fff4b3d0
>>> 00000000f7b7f3a0 0000000000000003
>>> GPR04: 0000000000000000 0000000000000000
>>> 0000000000000000 0000000000000000
>>> GPR08: 0000000000000000 0000000000000000
>>> 0000000000000000 0000000000000000
>>> GPR12: 0000000000000000 00000000007efff4
>>> 0000000000000000 0000000000000000
>>> GPR16: 00000000006e3318 0000000000000001
>>> 00000000006e289c 0000000000000063
>>> GPR20: 00000000c04064a0 00000000007f0088
>>> 00000000fff4c734 00000000007d165c
>>> GPR24: 00000000007d1668 00000000fff4b400
>>> 0000000000000001 0000000000000001
>>> GPR28: 00000000fff4b46c 0000000000000000
>>> 00000000007bfff4 0000000000000003
>>> [ 31.926053] NIP [00000000006b2b48] 0x6b2b48
>>> [ 31.928930] LR [00000000006b2b20] 0x6b2b20
>>> [ 31.931720] --- interrupt: c00
>>> [ 31.933466] Code: ebe1fff8 7c0803a6 4e800020 60000000 7c0802a6
>>> fbe1fff8 7c7f1b78 f8010010 f821ff81 60000000 60000000 e93f0140
>>> <e9290000> 7d2a0074 794ad182 0b0a0000
>>> [ 31.946913] ---[ end trace 0000000000000000 ]---
>>>
>>>
>> That's a NULL pointer dereference in drm_gem_object_free().
>>
>> Trying to read obj->funcs->free while obj->funcs is NULL.
>>
>> Christophe
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2024-10-07 14:44 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
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[not found] <20241003060650.18454-1-wuhoipok@gmail.com>
2024-10-06 16:56 ` [PATCH] drm/radeon: add late_register for connector Christian Zigotzky
2024-10-06 17:37 ` Christophe Leroy
2024-10-06 18:01 ` Christian Zigotzky
2024-10-07 3:19 ` Kernel doesn't boot after DRM updates (drm-next-2024-09-19) Christian Zigotzky
2024-10-07 4:49 ` [PATCH] drm/radeon: add late_register for connector Hoi Pok Wu
2024-10-07 14:08 ` Christian König
2024-10-07 13:17 ` Alex Deucher
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