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([2001:56a:f979:1f00:1e92:b1c8:44bc:ce5a]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-207945da599sm101503115ad.6.2024.09.20.20.51.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 20 Sep 2024 20:51:52 -0700 (PDT) Message-ID: <609d594a-62e8-44ed-9cc2-585f9bf5ef70@telus.net> Date: Fri, 20 Sep 2024 21:51:50 -0600 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [REGRESSION] Re: AMDGPU 6.11.0 crash, 6.10.0 git bisect log To: Alex Hung , "Dr. David Alan Gilbert" , alexander.deucher@amd.com Cc: linux-kernel@vger.kernel.org, regressions@lists.linux.dev References: <1ab1991a-382f-4b59-9e07-76a696159631@amd.com> <894c29d5-0997-422c-9013-d1a17990b8a0@telus.net> <4bbf68fa-6ca2-47a0-9966-6971dabd7a0f@amd.com> Content-Language: en-US From: Bob Gill In-Reply-To: <4bbf68fa-6ca2-47a0-9966-6971dabd7a0f@amd.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit So the final change: CONFIG_DEBUG_KERNEL_DC=y (about line 227) of drivers/gpu/drm/amd/display/dc/bios/command_table2.c BIOS_CMD_TABLE_REVISION(dig1transmittercontrol, frev, crev); with the 6.11.0 kernel, and the X server is working OK. Thanks, Bob On 2024-09-20 20:20, Alex Hung wrote: > > > 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 >>>>> >>>>> >>>>> >>>>> >>>>> >>>>>