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SubjectRe: Xorg doesn't work anymore after the latest DRM updates
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Hi Nirmoy,

This patch works! Thanks a lot! We tested it on an A-EON AmigaOne
X5000/20 today.

Screenshot:
http://www.skateman.nl/wp-content/uploads/2021/07/Screenshot-at-2021-07-06-113237.png

Cheers,
Christian

On 05 July 2021 at 06:48 pm, Christian Zigotzky wrote:
> Hi Nirmoy,
>
> Many thanks for this information. We will test this patch asap.
>
> Have a nice day,
> Christian
>
> On 05 July 2021 at 10:26pm, Nirmoy wrote:
> > Hi Christian,
> >
> >
> > This issue looks similar to the one Mikel Rychliski fixed recently 
> : https://patchwork.freedesktop.org/patch/440791. Let us know if this
> helps.
> >
> >
> > Regards,
> >
> > Nirmoy
> >
> > On 7/3/2021 9:30 AM, Christian Zigotzky wrote:
> >> Hi All,
> >>
> >> Xorg doesn't work anymore after the latest DRM updates. [1]
> >>
> >> Error messages:
> >>
> >> Jul 03 08:54:51 Fienix systemd[1]: Starting Light Display Manager...
> >> Jul 03 08:54:51 Fienix systemd[1]: Started Light Display Manager.
> >> Jul 03 08:54:51 Fienix kernel: BUG: Kernel NULL pointer dereference
> on read at 0x00000010
> >> Jul 03 08:54:51 Fienix kernel: Faulting instruction address:
> 0xc000000000630750
> >> Jul 03 08:54:51 Fienix kernel: Oops: Kernel access of bad area,
> sig: 11 [#1]
> >> Jul 03 08:54:51 Fienix kernel: BE PAGE_SIZE=4K PREEMPT SMP
> NR_CPUS=4 CoreNet Generic
> >> Jul 03 08:54:51 Fienix kernel: Modules linked in: algif_skcipher
> bnep tuner_simple tuner_types tea5767 tuner tda7432 tvaudio msp3400
> bttv tea575x tveeprom videobuf_dma_sg videobuf_core rc_core videodev
> mc btusb btrtl btbcm btintel bluetooth ecdh_generic ecc
> uio_pdrv_genirq uio
> >> Jul 03 08:54:51 Fienix kernel: CPU: 3 PID: 4300 Comm: Xorg.wrap Not
> tainted 5.14.0-a3_A-EON_X5000-07637-g3dbdb38e2869-dirty #1
> >> Jul 03 08:54:51 Fienix kernel: NIP:  c000000000630750 LR:
> c00000000060fedc CTR: c000000000630728
> >> Jul 03 08:54:51 Fienix kernel: REGS: c00000008d903470 TRAP: 0300
> Not tainted (5.14.0-a3_A-EON_X5000-07637-g3dbdb38e2869-dirty)
> >> Jul 03 08:54:51 Fienix kernel: MSR:  0000000080029002 <CE,EE,ME> 
> CR: 20000222  XER: 20000000
> >> Jul 03 08:54:51 Fienix kernel: DEAR: 0000000000000010 ESR:
> 0000000000000000 IRQMASK: 0
> >>                                GPR00: c00000000060fedc
> c00000008d903710 c00000000190c400 c000000085d59c00
> >>                                GPR04: c00000008d9035b8
> ffffffffffffffff c0000000870a4900 c000000085b62d00
> >>                                GPR08: 000000000000000f
> 0000000000000000 c000000000630728 0000000000000003
> >>                                GPR12: 0000000020000222
> c00000003fffeac0 00000000ffe51070 000000000086007c
> >>                                GPR16: 0000000000862820
> 00000000ffb7ec68 0000000000000000 00000000ffffffff
> >>                                GPR20: 00000000c04064a0
> 0000000000450088 00000000ffca79e4 5deadbeef0000122
> >>                                GPR24: 5deadbeef0000100
> 0000000000000000 c0000000876028f0 c000000080bd4000
> >>                                GPR28: c000000087603c48
> c000000085d59d78 c000000085d59c00 c000000085d59c78
> >> Jul 03 08:54:51 Fienix kernel: NIP [c000000000630750]
> .radeon_ttm_bo_destroy+0x28/0xc0
> >> Jul 03 08:54:51 Fienix kernel: LR [c00000000060fedc]
> .ttm_bo_put+0x2ec/0x344
> >> Jul 03 08:54:51 Fienix kernel: Call Trace:
> >> Jul 03 08:54:51 Fienix kernel: [c00000008d903710]
> [c00000000060fbe4] .ttm_bo_cleanup_memtype_use+0x54/0x60 (unreliable)
> >> Jul 03 08:54:51 Fienix kernel: [c00000008d903790]
> [c00000000060fedc] .ttm_bo_put+0x2ec/0x344
> >> Jul 03 08:54:51 Fienix kernel: [c00000008d903820]
> [c000000000630b50] .radeon_bo_unref+0x28/0x3c
> >> Jul 03 08:54:51 Fienix kernel: [c00000008d9038a0]
> [c0000000006d1f6c] .radeon_vm_fini+0x1b0/0x1b8
> >> Jul 03 08:54:51 Fienix kernel: [c00000008d903940]
> [c000000000618e38] .radeon_driver_postclose_kms+0x128/0x178
> >> Jul 03 08:54:51 Fienix kernel: [c00000008d9039e0]
> [c0000000005deb14] .drm_file_free+0x1d8/0x278
> >> Jul 03 08:54:51 Fienix kernel: [c00000008d903aa0]
> [c0000000005def00] .drm_release+0x64/0xc8
> >> Jul 03 08:54:51 Fienix kernel: [c00000008d903b30]
> [c00000000017636c] .__fput+0x11c/0x25c
> >> Jul 03 08:54:51 Fienix kernel: [c00000008d903bd0]
> [c00000000008b1e8] .task_work_run+0xa4/0xbc
> >> Jul 03 08:54:51 Fienix kernel: [c00000008d903c70]
> [c000000000004bf4] .do_notify_resume+0x144/0x2f0
> >> Jul 03 08:54:51 Fienix kernel: [c00000008d903d70]
> [c00000000000b380] .syscall_exit_prepare+0x110/0x130
> >> Jul 03 08:54:51 Fienix kernel: [c00000008d903e10]
> [c000000000000688] system_call_common+0x100/0x1fc
> >> Jul 03 08:54:51 Fienix kernel: --- interrupt: c00 at 0x3f4f58
> >> Jul 03 08:54:51 Fienix kernel: NIP:  00000000003f4f58 LR:
> 00000000003f4f2c CTR: 0000000000000000
> >> Jul 03 08:54:51 Fienix kernel: REGS: c00000008d903e80 TRAP: 0c00
> Not tainted (5.14.0-a3_A-EON_X5000-07637-g3dbdb38e2869-dirty)
> >> Jul 03 08:54:51 Fienix kernel: MSR:  000000000002d002
> <CE,EE,PR,ME>  CR: 20000420  XER: 00000000
> >> Jul 03 08:54:51 Fienix kernel: IRQMASK: 0
> >>                                GPR00: 0000000000000006
> 00000000ffca66a0 00000000f798a310 0000000000000000
> >>                                GPR04: 0000000000000000
> 0000000000000000 0000000000000000 0000000000000000
> >>                                GPR08: 0000000000000000
> 0000000000000000 0000000000000000 0000000000000000
> >>                                GPR12: 0000000000000000
> 000000000044fff4 00000000ffe51070 000000000086007c
> >>                                GPR16: 0000000000862820
> 00000000ffb7ec68 0000000000000000 00000000ffffffff
> >>                                GPR20: 00000000c04064a0
> 0000000000450088 00000000ffca79e4 00000000004317ac
> >>                                GPR24: 00000000004317b8
> 00000000ffca66d0 0000000000000001 00000000ffca673c
> >>                                GPR28: 0000000000000001
> 0000000000000000 000000000041cff4 0000000000000003
> >> Jul 03 08:54:51 Fienix kernel: NIP [00000000003f4f58] 0x3f4f58
> >> Jul 03 08:54:51 Fienix kernel: LR [00000000003f4f2c] 0x3f4f2c
> >> Jul 03 08:54:51 Fienix kernel: --- interrupt: c00
> >> Jul 03 08:54:51 Fienix kernel: Instruction dump:
> >> Jul 03 08:54:51 Fienix kernel: 40c2fff4 4e800020 7c0802a6 fbc1fff0
> f8010010 3bc3ff88 fbe1fff8 38a0ffff
> >> Jul 03 08:54:51 Fienix kernel: f821ff81 7c7f1b78 e9230168 7fc3f378
> <80890010> 4bffff51 e87f0208 38631df8
> >> Jul 03 08:54:51 Fienix kernel: ---[ end trace ddf73d2d70058380 ]---
> >> Jul 03 08:54:51 Fienix kernel:
> >> Jul 03 08:54:51 Fienix systemd[1]: lightdm.service: Main process
> exited, code=exited, status=1/FAILURE
> >> Jul 03 08:54:51 Fienix systemd[1]: lightdm.service: Failed with
> result 'exit-code'.
> >> Jul 03 08:54:51 Fienix avahi-daemon[3857]: Registering new address
> record for 2a02:8109:89c0:ebfc:d372:f06c:9247:7d54 on enP4096p4s4.*.
> >> Jul 03 08:54:51 Fienix systemd[1]: lightdm.service: Scheduled
> restart job, restart counter is at 1.
> >> Jul 03 08:54:51 Fienix systemd[1]: Stopped Light Display Manager.
> >>
> >> ----
> >> Systems: A-EON AmigaOne X1000 and X5000 with Radeon HD6970 graphics
> cards. [2] [3] [4]
> >>
> >> The biggest problem is, that I don't have time for bisecting and
> fixing this issue.
> >>
> >> Cheers,
> >> Christian
> >>
> >> [1]
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e058a84bfddc42ba356a2316f2cf1141974625c9
> >> [2] http://wiki.amiga.org/index.php?title=X5000
> >> [3] https://en.wikipedia.org/wiki/AmigaOne_X1000
> >> [4] https://forum.hyperion-entertainment.com/viewtopic.php?f=58&t=4378
>
>

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