On Tue, 19 Dec 2023 20:22:43 +0100 Eduard Bloch <e...@gmx.de> wrote:
#7 0x00007fb14945a510 __restore_rt (libc.so.6 + 0x3c510)
#8 0x00007fb149186702 n/a (amdgpu_drv.so + 0x16702)
#9 0x00007fb149186c96 n/a (amdgpu_drv.so + 0x16c96)
#10 0x00005577d8e75a6b xf86DPMSSet (Xorg + 0xd3a6b)
Hello,
I am not maintainer of xserver-xorg-video-amdgpu,
just tried to collect some more information.
The interesting lines above in the stacktrace translate to this:
Stack trace of thread 1011552:
...
#7 0x7fb14945a510 __restore_rt (libc.so.6 + 0x3c510) |
#8 0x7fb149186702 n/a (amdgpu_drv.so + 0x16702) | in drmmode_set_mode at
../../src/drmmode_display.c:1267
#9 0x7fb149186c96 n/a (amdgpu_drv.so + 0x16c96) | in
drmmode_set_mode_major at ../../src/drmmode_display.c:1371
#10 0x5577d8e75a6b xf86DPMSSet (Xorg + 0xd3a6b) | in xf86DPMSSet
...
This leads to this [1] upstream issue and merge request [2].
Unfortunately this is not yet part of an upstream release.
A workaround could be a local build of xserver-xorg-video-amdgpu
containing the two commits. They are the first commits after the 23.0.0 release.
Kind regards,
Bernhard
[1] https://gitlab.freedesktop.org/xorg/driver/xf86-video-amdgpu/-/issues/70
[2]
https://gitlab.freedesktop.org/xorg/driver/xf86-video-amdgpu/-/merge_requests/85
# 2024-05-04 Trixie/testing amd64 qemu VM
apt install gdb xserver-xorg xserver-xorg-video-amdgpu xserver-xorg-core-dbgsym
xserver-xorg-video-amdgpu-dbgsym
apt build-dep xserver-xorg-video-amdgpu
mkdir /home/benutzer/source/xserver-xorg-video-amdgpu/orig -p
cd /home/benutzer/source/xserver-xorg-video-amdgpu/orig
apt source xserver-xorg-video-amdgpu
gdb -q
set width 0
set pagination off
directory
/home/benutzer/source/xserver-xorg-video-amdgpu/orig/xserver-xorg-video-amdgpu-23.0.0/debian/patches
file /usr/lib/xorg/Xorg
tb main
run
call dlopen("/usr/lib/xorg/modules/drivers/amdgpu_drv.so",0x101)
print (int)getpid()
shell cat /proc/2535/maps | grep amdgpu_drv | head -n1
b *(0x7ffff74f9000 + 0x16c96)
b *(0x7ffff74f9000 + 0x16702)
info b
pipe disassemble drmmode_set_mode_major | grep -i c96 -C3
pipe disassemble drmmode_set_mode | grep -i 702 -C3
list drmmode_display.c:1371
list drmmode_display.c:1267
benutzer@debian:~$ gdb -q
(gdb) set width 0
(gdb) set pagination off
(gdb) directory
/home/benutzer/source/xserver-xorg-video-amdgpu/orig/xserver-xorg-video-amdgpu-23.0.0/debian/patches
Source directories searched:
/home/benutzer/source/xserver-xorg-video-amdgpu/orig/xserver-xorg-video-amdgpu-23.0.0/debian/patches:$cdir:$cwd
(gdb) file /usr/lib/xorg/Xorg
Reading symbols from /usr/lib/xorg/Xorg...
Reading symbols from
/usr/lib/debug/.build-id/77/6f662cfdbd2d0952921614575518e7c1b90261.debug...
(gdb) tb main
Temporary breakpoint 1 at 0x4d260: file ../../../../dix/stubmain.c, line 33.
(gdb) run
Starting program: /usr/lib/xorg/Xorg
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Temporary breakpoint 1, main (argc=1, argv=0x7fffffffe478, envp=0x7fffffffe488)
at ../../../../dix/stubmain.c:33
33 ../../../../dix/stubmain.c: Datei oder Verzeichnis nicht gefunden.
(gdb) call dlopen("/usr/lib/xorg/modules/drivers/amdgpu_drv.so",0x101)
$1 = (void *) 0x555555803a80
(gdb) info inferior
Num Description Connection Executable
* 1 process 2535 1 (native) /usr/lib/xorg/Xorg
(gdb) print (int)getpid()
$2 = 2535
(gdb) shell cat /proc/2535/maps | grep amdgpu_drv | head -n1
7ffff74f9000-7ffff7500000 r--p 00000000 08:12 681046
/usr/lib/xorg/modules/drivers/amdgpu_drv.so
(gdb) b *(0x7ffff74f9000 + 0x16c96)
Breakpoint 2 at 0x7ffff750fc96: file ../../src/drmmode_display.c, line 1371.
(gdb) b *(0x7ffff74f9000 + 0x16702)
Breakpoint 3 at 0x7ffff750f702: file ../../src/drmmode_display.c, line 1267.
(gdb) info b
Num Type Disp Enb Address What
2 breakpoint keep y 0x00007ffff750fc96 in drmmode_set_mode_major at
../../src/drmmode_display.c:1371
3 breakpoint keep y 0x00007ffff750f702 in drmmode_set_mode at
../../src/drmmode_display.c:1267
(gdb) pipe disassemble drmmode_set_mode_major | grep -i c96 -C3
0x00007ffff750fc8b <+955>: mov %r14,%rsi
0x00007ffff750fc8e <+958>: mov %rbx,%rdi
0x00007ffff750fc91 <+961>: call 0x7ffff750f650 <drmmode_set_mode>
0x00007ffff750fc96 <+966>: test %eax,%eax
0x00007ffff750fc98 <+968>: jne 0x7ffff750fef8
<drmmode_set_mode_major+1576>
0x00007ffff750fc9e <+974>: mov 0x30(%rsp),%rdi
0x00007ffff750fca3 <+979>: lea 0x60(%rsp),%rsi
(gdb) pipe disassemble drmmode_set_mode | grep -i 702 -C3
0x00007ffff750f6f8 <+168>: jne 0x7ffff750f710 <drmmode_set_mode+192>
0x00007ffff750f6fa <+170>: mov 0x78(%rsi),%rsi
0x00007ffff750f6fe <+174>: mov 0x10(%rsi),%rsi
0x00007ffff750f702 <+178>: mov (%rsi),%r11d
0x00007ffff750f705 <+181>: movslq %ecx,%rsi
0x00007ffff750f708 <+184>: add $0x1,%ecx
0x00007ffff750f70b <+187>: mov %r11d,0x0(%r13,%rsi,4)
(gdb) list drmmode_display.c:1371
1366 }
1367
1368 amdgpu_drm_wait_pending_flip(crtc);
1369 handle_deferred = TRUE;
1370
1371 if (!drmmode_set_mode(crtc, fb, mode, x, y))
1372 goto done;
1373
1374 ret = TRUE;
1375
(gdb) list drmmode_display.c:1267
1262 drmmode_output_private_ptr drmmode_output =
output->driver_private;
1263
1264 if (output->crtc != crtc)
1265 continue;
1266
1267 output_ids[output_count] =
drmmode_output->mode_output->connector_id; <<<<<<<<<
1268 output_count++;
1269 }
1270
1271 drmmode_ConvertToKMode(scrn, &kmode, mode);
Stack trace of thread 1011552:
...
#7 0x7fb14945a510 __restore_rt (libc.so.6 + 0x3c510) |
#8 0x7fb149186702 n/a (amdgpu_drv.so + 0x16702) | in drmmode_set_mode at
../../src/drmmode_display.c:1267
#9 0x7fb149186c96 n/a (amdgpu_drv.so + 0x16c96) | in
drmmode_set_mode_major at ../../src/drmmode_display.c:1371
#10 0x5577d8e75a6b xf86DPMSSet (Xorg + 0xd3a6b) | in xf86DPMSSet
...
https://gitlab.freedesktop.org/xorg/driver/xf86-video-amdgpu/-/issues/70
https://gitlab.freedesktop.org/xorg/driver/xf86-video-amdgpu/-/merge_requests/85
https://gitlab.freedesktop.org/xorg/driver/xf86-video-amdgpu/-/commit/ae22d12d420efbd8847f9b64b37e7a4cadde2600
https://gitlab.freedesktop.org/xorg/driver/xf86-video-amdgpu/-/commit/2897e1769c5d14a74bccbacb483667933807ead8
