Re: [REGRESSION] Re: AMDGPU 6.11.0 crash, 6.10.0 git bisect log

[Alex Hung]

On 2024-09-20 17:00, Dr. David Alan Gilbert wrote:
> * Bob Gill (gillb5@xxxxxxxxx) 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