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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - amd-staging-drm-next: BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 - R4 Mullins"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107595#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - amd-staging-drm-next: BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 - R4 Mullins"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107595">bug 107595</a>
from <span class="vcard"><a class="email" href="mailto:soprwa@gmail.com" title="Przemek <soprwa@gmail.com>"> <span class="fn">Przemek</span></a>
</span></b>
<pre>Bisected, if it helps.
git bisect log
git bisect start
# bad: [5024f8dfe478c1f56ef8812dabc55f2793024e93] drm/amdgpu:change VEGA
booting with firmware loaded by PSP
git bisect bad 5024f8dfe478c1f56ef8812dabc55f2793024e93
# good: [5c16f36f6f003b4415237acca59384a074cd8030] drm/amd/powerplay: Set
higher SCLK&MCLK frequency than dpm7 in OD (v2)
git bisect good 5c16f36f6f003b4415237acca59384a074cd8030
# good: [c90fca951e90ba470a3dc6087667edffcf8db21b] Merge tag 'powerpc-4.18-1'
of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
git bisect good c90fca951e90ba470a3dc6087667edffcf8db21b
# good: [ab0b2e59323cd3972e5f011fbbf3868a4ec360dd] Merge tag
'upstream-4.18-rc1' of git://git.infradead.org/linux-ubifs
git bisect good ab0b2e59323cd3972e5f011fbbf3868a4ec360dd
# good: [19785cf93b6c4252981894394f2dbd35c5e5d1ec] Merge branch 'linus' of
git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal
git bisect good 19785cf93b6c4252981894394f2dbd35c5e5d1ec
# good: [3069290d9d6a9afa93661c299419089eea57164b] Merge tag
'drm-intel-next-2018-06-06' of git://anongit.freedesktop.org/drm/drm-intel into
drm-next
git bisect good 3069290d9d6a9afa93661c299419089eea57164b
# bad: [c6d707136b4de409c7e74825e1f39e17e4b0797c] drm/amdgpu: Add support for
logging process info in amdgpu_vm.
git bisect bad c6d707136b4de409c7e74825e1f39e17e4b0797c
# good: [565c17b5f02dacd8430da8d95bbba60587f339af] Merge branch 'drm-next-4.19'
of git://people.freedesktop.org/~agd5f/linux into drm-next
git bisect good 565c17b5f02dacd8430da8d95bbba60587f339af
# good: [adbf1d96771e898ea12b0c3f448a60c4bcf19979] drm/amd/display: Program
vsc_infopacket in commit_planes_for_stream
git bisect good adbf1d96771e898ea12b0c3f448a60c4bcf19979
# bad: [a7dd65771617773335fc289e8cb6b75346331799] drm/amdgpu/vce: simplify vce
instance setup
git bisect bad a7dd65771617773335fc289e8cb6b75346331799
# bad: [35e1371a89eb98069116dabfdfabdc6a9dbfda9e] drm/amd/powerplay: correct
smc display config for multi monitor
git bisect bad 35e1371a89eb98069116dabfdfabdc6a9dbfda9e
# bad: [05d2638072d5b946623f96bac82673c2fa82c7e6] drm/amdgpu: Split
set_pg_state into separate function
git bisect bad 05d2638072d5b946623f96bac82673c2fa82c7e6
# good: [48c17e727376169a6165682fce9338393ee6b6da] drm/amdgpu: Rename
set_mmhub_powergating_by_smu to powergate_mmhub
git bisect good 48c17e727376169a6165682fce9338393ee6b6da
# bad: [3d632bde5f010ff6f9d6baa0f24cd9e2c49bdb24] drm/amd/pp: Add gfx pg
support in smu through set_powergating_by_smu
git bisect bad 3d632bde5f010ff6f9d6baa0f24cd9e2c49bdb24
# bad: [561a5c83eadde747253924be2f7be9070841b7c0] drm/amd/pp: Unify
powergate_uvd/vce/mmhub to set_powergating_by_smu
git bisect bad 561a5c83eadde747253924be2f7be9070841b7c0
If it seems legit, the bad commit is:
[4a67b31524d6343fd153a1256b9652df5fcf29bc] drm/amd/pp: Rename
enable_per_cu_power_gating to powergate_gfx
Thanks,
Przemek.</pre>
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