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1e038b6f-1f73-4ca2-0964-08dcd9e3fee2 X-MS-Exchange-CrossTenant-AuthSource: IA1PR12MB8495.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Sep 2024 02:20:43.7976 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: PBoRKJk7bBtJ1bLg5X82oIhLxbRBla+stKizVD4/PDcDkpWVsbWBHUf5SfxWliprchdDSD9po1O+zVz8CmYa7w== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB7318 On 2024-09-20 18:20, Bob Gill wrote: > Hi.  Sorry for the late reply.  My config has > CONFIG_DEBUG_KERNEL_DC=y > > I will set it to # CONFIG_DEBUG_KERNEL_DC is not set Hi Bob, It seems the below change in a171cce57792 causes the hang when CONFIG_DEBUG_KERNEL_DC is set. --- a/drivers/gpu/drm/amd/display/dc/bios/command_table2.c +++ b/drivers/gpu/drm/amd/display/dc/bios/command_table2.c @@ -227,7 +227,8 @@ static void init_transmitter_control(struct bios_parser *bp) uint8_t frev; uint8_t crev = 0; - BIOS_CMD_TABLE_REVISION(dig1transmittercontrol, frev, crev); + if (!BIOS_CMD_TABLE_REVISION(dig1transmittercontrol, frev, crev)) + BREAK_TO_DEBUGGER(); If you can help confirm thefollowing fix the hang, I will prepare a revert patch next week: * Set CONFIG_DEBUG_KERNEL_DC and revert the above change, i.e. --- a/drivers/gpu/drm/amd/display/dc/bios/command_table2.c +++ b/drivers/gpu/drm/amd/display/dc/bios/command_table2.c @@ -227,8 +227,7 @@ static void init_transmitter_control(struct bios_parser *bp) uint8_t frev; uint8_t crev = 0; - if (!BIOS_CMD_TABLE_REVISION(dig1transmittercontrol, frev, crev)) - BREAK_TO_DEBUGGER(); + BIOS_CMD_TABLE_REVISION(dig1transmittercontrol, frev, crev); Thanks a lot > > also, > > cat /var/log/kern.log | grep VBIOS       gives > > Sep 15 11:53:43 freedom kernel: [   16.372684] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 15 13:58:04 freedom kernel: [   16.705182] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 15 14:20:05 freedom kernel: [   17.043288] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 15 14:38:23 freedom kernel: [   16.625105] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 16 09:40:52 freedom kernel: [   16.780135] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 16 09:52:39 freedom kernel: [   15.764412] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 16 14:59:23 freedom kernel: [   16.077181] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 16 19:03:50 freedom kernel: [   16.613359] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 16 19:18:13 freedom kernel: [   15.895630] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 16 22:01:53 freedom kernel: [   15.768717] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 17 09:48:50 freedom kernel: [   15.758361] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 17 10:31:23 freedom kernel: [   15.762467] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 18 09:43:12 freedom kernel: [   16.086531] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 19 09:32:07 freedom kernel: [   16.034418] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 19 12:04:46 freedom kernel: [   15.771447] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 19 13:54:41 freedom kernel: [   15.791940] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 19 15:37:35 freedom kernel: [   15.749058] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 19 17:25:04 freedom kernel: [   16.449671] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 19 19:43:06 freedom kernel: [   16.312367] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 19 21:31:28 freedom kernel: [   15.864131] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 20 09:12:39 freedom kernel: [   15.764786] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 20 11:31:36 freedom kernel: [   17.332211] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 20 13:23:19 freedom kernel: [   15.759616] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 20 13:45:07 freedom kernel: [   16.557215] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 20 14:01:17 freedom kernel: [   16.433437] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 20 14:24:14 freedom kernel: [   15.770057] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 20 14:47:27 freedom kernel: [   15.725150] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 20 15:02:31 freedom kernel: [   16.591276] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > Sep 20 15:19:44 freedom kernel: [   15.863542] amdgpu 0000:04:00.0: > amdgpu: Fetched VBIOS from ROM BAR > > so not what quite what you were looking for, but when I run cat kern.log > | grep Failed : > > Sep 15 11:53:43 freedom kernel: [   25.730013] uvcvideo 1-5.2:1.1: > Failed to set UVC probe control : -32 (exp. 26). > Sep 15 13:58:04 freedom kernel: [   26.025432] uvcvideo 2-5.2:1.1: > Failed to set UVC probe control : -32 (exp. 26). > Sep 15 14:38:23 freedom kernel: [   25.883820] uvcvideo 2-5.2:1.1: > Failed to set UVC probe control : -32 (exp. 26). > Sep 16 09:40:52 freedom kernel: [   27.204539] uvcvideo 1-5.2:1.1: > Failed to set UVC probe control : -32 (exp. 26). > Sep 16 14:41:22 freedom kernel: [   28.985885] uvcvideo 2-5.2:1.1: > Failed to set UVC probe control : -32 (exp. 26). > Sep 16 19:03:50 freedom kernel: [   26.510748] uvcvideo 1-5.2:1.1: > Failed to set UVC probe control : -32 (exp. 26). > Sep 17 09:48:50 freedom kernel: [   25.682372] uvcvideo 2-5.2:1.1: > Failed to set UVC probe control : -32 (exp. 26). > Sep 17 10:31:23 freedom kernel: [   25.547899] uvcvideo 1-5.2:1.1: > Failed to set UVC probe control : -32 (exp. 26). > Sep 18 09:43:12 freedom kernel: [   26.243232] uvcvideo 1-5.2:1.1: > Failed to set UVC probe control : -32 (exp. 26). > Sep 19 09:32:07 freedom kernel: [   25.267332] uvcvideo 2-5.2:1.1: > Failed to set UVC probe control : -32 (exp. 26). > Sep 19 12:04:46 freedom kernel: [   25.269450] uvcvideo 2-5.2:1.1: > Failed to set UVC probe control : -32 (exp. 26). > Sep 19 15:37:35 freedom kernel: [   25.494803] uvcvideo 1-5.2:1.1: > Failed to set UVC probe control : -32 (exp. 26). > Sep 19 19:43:06 freedom kernel: [   26.288598] uvcvideo 2-5.2:1.1: > Failed to set UVC probe control : -32 (exp. 26). > Sep 20 09:12:39 freedom kernel: [   25.291743] uvcvideo 2-5.2:1.1: > Failed to set UVC probe control : -32 (exp. 26). > Sep 20 13:23:19 freedom kernel: [   25.884358] uvcvideo 1-5.2:1.1: > Failed to set UVC probe control : -32 (exp. 26). > Sep 20 14:24:14 freedom kernel: [   25.312379] uvcvideo 2-5.2:1.1: > Failed to set UVC probe control : -32 (exp. 26). > Sep 20 14:47:27 freedom kernel: [   25.352905] uvcvideo 2-5.2:1.1: > Failed to set UVC probe control : -32 (exp. 26). > Sep 20 15:19:44 freedom kernel: [   25.297893] uvcvideo 2-5.2:1.1: > Failed to set UVC probe control : -32 (exp. 26). > > > Hopefully this helps.  Please mail me if you for more information.  I > have changed my .config and set > > # CONFIG_DEBUG_KERNEL_DC is not set > > I am attempting to build 6.11.0. > > Thanks, > > Bob > > > On 2024-09-20 17:34, Alex Hung wrote: >> >> >> On 2024-09-20 17:00, Dr. David Alan Gilbert wrote: >>> * Bob Gill (gillb5@telus.net) wrote: >>>> Hello.  Kernel 6.11.0 crashes.  6.10.0 builds.  Al Viro and Dr. >>>> David Alan >>>> Gilbert have been helpful, and asked that I >>>> >>>> post a git bisect log.  The last log step seems odd, but the second >>>> last >>>> step "Remove useless function call" might be what broke. >>> >>> Thank you for doing this! >>> >>> My reading is that's fine, I think the next one: >>> >>> tree: git bisect bad >>> [a171cce57792b0a6206d532050179a381ad74f8f] drm/amd/display: Check and >>> log for >>> function error codes >>> >>> or the one after it is the culprit? >>> >>> Adding the two Alex's from AMD back onto the thread. >>> (Also added the [REGRESSION] marker the notes tell us to add) >> >> The commit triggers debugger in case of in case of errors. >> >> Is the config CONFIG_DEBUG_KERNEL_DC (Enable kgdb break in DC) enabled >> in .config, i.e. can you check "grep CONFIG_DEBUG_KERNEL_DC .config"? >> >> If so, can you also try to disable it and check whether you can see >> error messages "Failed to execute VBIOS command table" in kernel log? >> >>> >>>> My hardware is old corei7 quad core/8 thread Tylersberg/Nehalem with >>>> an AMD >>>> RX 6500XT.  That's the odd combination. >>>> >>>> Thanks in advance, >>> >>> Thanks again for the bisect. >>> >>> Dave >>> >>>> Bob >>>> >>>> Config:  (.config) >>>> /data/kernel/bobtest6.10-64 >>>> >>>> Build line: (last command tells me the job is finished) >>>> make menuconfig && make -j $(nproc) && make modules && make >>>> modules_install >>>> && make install && /data/music/pl.sh >>>> >>>> Rule 1: Do not modify ANYTHING in the source tree >>>> >>>> git bisect start >>>> git bisect bad >>>> git bisect good v6.10 >>>> >>>> Bisecting: 11273 revisions left to test after this (roughly 14 steps) >>>> [2c9b3512402ed192d1f43f4531fb5da947e72bd0] Merge tag 'for-linus' of >>>> git://git.kernel.org/pub/scm/virt/kvm/kvm >>>> >>>> latest kernel: >>>> ls -alt /lib/modules | head -2 | tail -1 | tr -s " " | cut -d' ' -f9 >>>> 6.10.0+ >>>> >>>> RESULT:  boot 6.10.0+ fails >>>>           screen black for more than 2 minutes, >>>>           (caps lock key unresponsive, reset, power >>>>           buttons on computer case do nothing).  Reset with power bar. >>>> >>>> tree: git bisect bad >>>> Bisecting: 5677 revisions left to test after this (roughly 13 steps) >>>> [280e36f0d5b997173d014c07484c03a7f7750668] nsfs: use cleanup guard >>>> >>>> latest kernel: >>>> ls -alt /lib/modules | head -2 | tail -1 | tr -s " " | cut -d' ' -f9 >>>> 6.10.0+ >>>> >>>> RESULT: boot 6.10.0+ successful >>>> tree: git bisect good >>>> Bisecting: 2855 revisions left to test after this (roughly 12 steps) >>>> [dde1a0e1625c08cf4f958348a83434b2ddecf449] Merge tag >>>> 'x86-percpu-2024-07-17' >>>> of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip >>>> >>>> latest kernel: >>>> ls -alt /lib/modules | head -2 | tail -1 | tr -s " " | cut -d' ' -f9 >>>> 6.10.0+ >>>> >>>> RESULT: boot 6.10.0+ fails >>>>          screen black for more than 2 minutes, >>>>          (caps lock key unresponsive, reset, power >>>>          buttons on computer case do nothing).  Reset with power bar. >>>> >>>> tree: git bisect bad >>>> Bisecting: 1478 revisions left to test after this (roughly 11 steps) >>>> [32a120f52a4c0121bca8f2328d4680d283693d60] drm/i915/mtl: Skip PLL state >>>> verification in TBT mode >>>> >>>> latest kernel: >>>> ls -alt /lib/modules | head -2 | tail -1 | tr -s " " | cut -d' ' -f9 >>>> 6.10.0-rc3+ >>>> >>>> RESULT: boot 6.10.0-rc3+ successful >>>> tree: git bisect good >>>> Bisecting: 739 revisions left to test after this (roughly 10 steps) >>>> [b6a343df46d69070a7073405e470e6348180ea34] drm/amdgpu: initialize GC IP >>>> v11.5.2 >>>> >>>> latest kernel: >>>> ls -alt /lib/modules | head -2 | tail -1 | tr -s " " | cut -d' ' -f9 >>>> 6.10.0-rc3+ >>>> >>>> RESULT: boot 6.10.0-rc3+ fails >>>>          screen black for more than 2 minutes, >>>>          (caps lock key unresponsive, reset, power >>>>          buttons on computer case do nothing).  Reset with power bar. >>>> >>>> tree: git bisect bad >>>> Bisecting: 369 revisions left to test after this (roughly 9 steps) >>>> [cf1d06ac53a15b83c0a63225606cfe175e33a8a0] accel/ivpu: Increase >>>> autosuspend >>>> delay to 100ms on 40xx >>>> >>>> latest kernel: >>>> ls -alt /lib/modules | head -2 | tail -1 | tr -s " " | cut -d' ' -f9 >>>> 6.10.0-rc1+ >>>> >>>> RESULT: boot 6.10.0-rc1+ successful >>>> tree: git bisect good >>>> Bisecting: 184 revisions left to test after this (roughly 8 steps) >>>> [0ca9f757a0e27a076395ec1b2002661bcf5c25e8] drm/amd/pm: powerplay: Add >>>> `__counted_by` attribute for flexible arrays >>>> >>>> latest kernel: >>>> ls -alt /lib/modules | head -2 | tail -1 | tr -s " " | cut -d' ' -f9 >>>> 6.9.0-rc5+ >>>> >>>> RESULT: boot 6.9.0-rc5+ successful >>>> tree: git bisect good >>>> Bisecting: 92 revisions left to test after this (roughly 7 steps) >>>> [9862ef7bae47b9292a38a0a1b30bff7f56d7815b] drm/amd/display: Use >>>> periodic >>>> detection for ipx/headless >>>> >>>> latest kernel: >>>> ls -alt /lib/modules | head -2 | tail -1 | tr -s " " | cut -d' ' -f9 >>>> 6.10.0-rc3+ >>>> >>>> RESULT: boot 6.10.0-rc3+ fails >>>>          screen black for more than 2 minutes, >>>>          (caps lock key unresponsive, reset, power >>>>          buttons on computer case do nothing).  Reset with power bar. >>>> >>>> tree: git bisect bad >>>> Bisecting: 44 revisions left to test after this (roughly 6 steps) >>>> [a78313bb206e0c456a989f380c4cbd8af8af7c76] Merge tag >>>> 'drm-intel-gt-next-2024-06-12' of >>>> https://gitlab.freedesktop.org/drm/i915/kernel into drm-next >>>> >>>> latest kernel: >>>> ls -alt /lib/modules | head -2 | tail -1 | tr -s " " | cut -d' ' -f9 >>>> 6.10.0-rc3+ >>>> >>>> RESULT: boot 6.10.0-rc3+ successful >>>> tree: git bisect good >>>> Bisecting: 22 revisions left to test after this (roughly 5 steps) >>>> [51dbe0239b1fc7c435867ce28e5eb4394b6641e1] drm/amd/display: Fix >>>> cursor size >>>> issues >>>> >>>> latest kernel: >>>> ls -alt /lib/modules | head -2 | tail -1 | tr -s " " | cut -d' ' -f9 >>>> 6.10.0-rc3+ >>>> >>>> RESULT: boot 6.10.0-rc3+ successful >>>> tree: git bisect good >>>> Bisecting: 11 revisions left to test after this (roughly 4 steps) >>>> [871512e36f9c1c2cb4e62eb860ca0438800e4d63] drm/amd/display: Add >>>> workaround >>>> to restrict max frac urgent for DPM0 >>>> >>>> latest kernel: >>>> ls -alt /lib/modules | head -2 | tail -1 | tr -s " " | cut -d' ' -f9 >>>> 6.10.0-rc3+ >>>> >>>> RESULT: boot 6.10.0-rc3+ fails >>>>          screen black for more than 2 minutes, >>>>          (caps lock key unresponsive, reset, power >>>>          buttons on computer case do nothing).  Reset with power bar. >>>> >>>> tree: git bisect bad >>>> Bisecting: 5 revisions left to test after this (roughly 3 steps) >>>> [5d93060d430b359e16e7c555c8f151ead1ac614b] drm/amd/display: Check HDCP >>>> returned status >>>> >>>> latest kernel: >>>> ls -alt /lib/modules | head -2 | tail -1 | tr -s " " | cut -d' ' -f9 >>>> 6.10.0-rc3+ >>>> >>>> RESULT: boot 6.10.0-rc3+ fails >>>>          screen black for more than 2 minutes, >>>>          (caps lock key unresponsive, reset, power >>>>          buttons on computer case do nothing).  Reset with power bar. >>>> >>>> tree: git bisect bad >>>> Bisecting: 2 revisions left to test after this (roughly 1 step) >>>> [e094992bd1caa1fbd42221c7c305fc3b54172b5c] drm/amd/display: Remove >>>> useless >>>> function call >>>> >>>> latest kernel: >>>> ls -alt /lib/modules | head -2 | tail -1 | tr -s " " | cut -d' ' -f9 >>>> 6.10.0-rc3+ >>>> >>>> RESULT: boot 6.10.0-rc3+ successful >>>> >>>> tree: git bisect good >>>> [2c2ee1d1329881d8e6bb23c3b9f3b41df8a8055c] drm/amd/display: Check >>>> and log >>>> for function error codes >>>> >>>> latest kernel: >>>> ls -alt /lib/modules | head -2 | tail -1 | tr -s " " | cut -d' ' -f9 >>>> 6.10.0-rc3+ >>>> >>>> RESULT: boot 6.10.0-rc3+ fails >>>>          screen black for more than 2 minutes, >>>>          (caps lock key unresponsive, reset, power >>>>          buttons on computer case do nothing).  Reset with power bar. >>>> >>>> tree: git bisect bad >>>> [a171cce57792b0a6206d532050179a381ad74f8f] drm/amd/display: Check >>>> and log >>>> for function error codes >>>> >>>> >>>> >>>> >>>> >>>>