Regression report on laptop suspend

[casteyde.christian@free.fr]

Hello

I've noticed my laptop totally freeze when going to hibernation.
The git bisect log is appended below.
Please note however that even the previous good commit was "good" (ie : laptop managed to suspend and resume), the system was unstable and froze few minutes later.

Hardware specs: AMD Ryzen 5 4600H with Vega graphics + Nvidia 1650Ti (unused)
Software: Slackware 14.2 / X.org.

Seems to be related to drm stuff.
I've issued bugzilla https://bugzilla.kernel.org/show_bug.cgi?id=215427

Thanks

git bisect start
# good: [8bb7eca972ad531c9b149c0a51ab43a417385813] Linux 5.15
git bisect good 8bb7eca972ad531c9b149c0a51ab43a417385813
# bad: [a7904a538933c525096ca2ccde1e60d0ee62c08e] Linux 5.16-rc6
git bisect bad a7904a538933c525096ca2ccde1e60d0ee62c08e
# bad: [43e1b12927276cde8052122a24ff796649f09d60] Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
git bisect bad 43e1b12927276cde8052122a24ff796649f09d60
# good: [fc02cb2b37fe2cbf1d3334b9f0f0eab9431766c4] Merge tag 'net-next-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
git bisect good fc02cb2b37fe2cbf1d3334b9f0f0eab9431766c4
# bad: [d9bd054177fbd2c4762546aec40fc3071bfe4cc0] Merge tag 'amd-drm-next-5.16-2021-10-29' of https://gitlab.freedesktop.org/agd5f/linux into drm-next
git bisect bad d9bd054177fbd2c4762546aec40fc3071bfe4cc0
# skip: [797d72ce8e0f8fa8a808cb189b5411046432cfd3] Merge tag 'drm-misc-next-2021-10-06' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
git bisect skip 797d72ce8e0f8fa8a808cb189b5411046432cfd3
# skip: [bf72ca73aaa6629568cb9b0761be6efdd02a2591] drm/amd/display: [FW Promotion] Release 0.0.85
git bisect skip bf72ca73aaa6629568cb9b0761be6efdd02a2591
# good: [bc41f059a080e487c235b539f1e5cdbf605aba9f] drm/i915/dp: fix DG1 and RKL max source rates
git bisect good bc41f059a080e487c235b539f1e5cdbf605aba9f
# skip: [58144d283712c9e80e528e001af6ac5aeee71af2] drm/amdgpu: unify BO evicting method in amdgpu_ttm
git bisect skip 58144d283712c9e80e528e001af6ac5aeee71af2
# skip: [a5b51a9f8523a0b88ce7e8e8059f75a43c34c57f] drm/i915/gt: add asm/cacheflush.h for use of clflush()
git bisect skip a5b51a9f8523a0b88ce7e8e8059f75a43c34c57f
# skip: [40348baedfbc6500e7a090c7da1d55b6c94c334f] drm/amd/display: fix duplicated inclusion
git bisect skip 40348baedfbc6500e7a090c7da1d55b6c94c334f
# skip: [7547675b84bf452542463db29adb113cadb7dd6d] drm/virtio: implement context init: track {ring_idx, emit_fence_info} in virtio_gpu_fence
git bisect skip 7547675b84bf452542463db29adb113cadb7dd6d
# good: [f01ee019586220c86f238263a4fbde6e72085e11] drm/amd/display: Add DP 2.0 SST DC Support
git bisect good f01ee019586220c86f238263a4fbde6e72085e11
# good: [f3ede209d44d71636890a78fa89c5b1c83340320] drm/i915/pci: rename functions to have i915_pci prefix
git bisect good f3ede209d44d71636890a78fa89c5b1c83340320
# skip: [4fb530e5caf7cb666948db65f245b350ce520436] drm/virtio: implement context init: support init ioctl
git bisect skip 4fb530e5caf7cb666948db65f245b350ce520436
# good: [c7c4dfb6fe704ae3cce1a8f438db75b1a0a9061f] drm/i915/display: Some code improvements and code style fixes for DRRS
git bisect good c7c4dfb6fe704ae3cce1a8f438db75b1a0a9061f
# skip: [7a28bee067d524c1b8770aa72a82263eb9fc53f0] drm/amd/display: Disable dpp root clock when not being used
git bisect skip 7a28bee067d524c1b8770aa72a82263eb9fc53f0
# good: [5b116c17e6babc6de2e26714bc66228c74038b71] drm/i915/guc: Drop pin count check trick between sched_disable and re-pin
git bisect good 5b116c17e6babc6de2e26714bc66228c74038b71
# skip: [9878844094703fbae1c3b301c9bb71253a30efe7] drm/amdgpu: drive all vega asics from the IP discovery table
git bisect skip 9878844094703fbae1c3b301c9bb71253a30efe7
# skip: [7194dc998dfffca096c30b3cd39625158608992d] drm/i915/tc: Fix TypeC port init/resume time sanitization
git bisect skip 7194dc998dfffca096c30b3cd39625158608992d
# skip: [5c3720be7d46581181782f5cf9585b532feed947] drm/amdgpu: get VCN and SDMA instances from IP discovery table
git bisect skip 5c3720be7d46581181782f5cf9585b532feed947
# skip: [a53f2c035e9832d20775d2c66c71495f2dc27699] drm/panfrost: Calculate lock region size correctly
git bisect skip a53f2c035e9832d20775d2c66c71495f2dc27699
# skip: [d04287d062a4198ec0bf0112db03618f65d7428a] drm/amdgpu: During s0ix don't wait to signal GFXOFF
git bisect skip d04287d062a4198ec0bf0112db03618f65d7428a
# skip: [9ced12182d0d8401d821e9602e56e276459900fc] drm/i915: Catch yet another unconditioal clflush
git bisect skip 9ced12182d0d8401d821e9602e56e276459900fc
# skip: [dac3c405b9aedee301d0634b4e275b81f0d74363] drm/amd/display: [FW Promotion] Release 0.0.87
git bisect skip dac3c405b9aedee301d0634b4e275b81f0d74363
# skip: [9f620f1dde3e3e984837163d7930dc4b2abffe82] drm/i915: Call intel_ddi_init_dp_buf_reg() earlier
git bisect skip 9f620f1dde3e3e984837163d7930dc4b2abffe82
# skip: [178fbb6d552f294037291bf62d41b31d30186f31] drm/amd/display: Implement DPIA training loop
git bisect skip 178fbb6d552f294037291bf62d41b31d30186f31
# good: [253a55918ce128f15a3be66db5e2072665143554] drm/amd/display: Fix issue with dynamic bpp change for DCN3x
git bisect good 253a55918ce128f15a3be66db5e2072665143554
# skip: [50638f7dbd0b3969b47d2772c4db02ed92b6c47b] drm/amdgpu/pm/amdgpu_smu: convert more IP version checking
git bisect skip 50638f7dbd0b3969b47d2772c4db02ed92b6c47b
# bad: [3605eacc8ae055d699f7fa3adb9123c4c36ecd82] drm/panfrost: Make use of the helper function devm_platform_ioremap_resource()
git bisect bad 3605eacc8ae055d699f7fa3adb9123c4c36ecd82
# bad: [47ddb72f789333a8ccb792b0fd6d6fe8a7906694] drm: zte: remove obsolete DRM Support for ZTE SoCs
git bisect bad 47ddb72f789333a8ccb792b0fd6d6fe8a7906694
# bad: [072e70d52372c44df90b44fb4cd949a709bb5bef] drm: panel-orientation-quirks: Add quirk for the Chuwi Hi10 Pro
git bisect bad 072e70d52372c44df90b44fb4cd949a709bb5bef
# bad: [82ade934dde45b9d9008954b297f7727233e37af] drm/arm: malidp: Use fourcc_mod_is_vendor() helper
git bisect bad 82ade934dde45b9d9008954b297f7727233e37af
# bad: [8b4e02c70fca482c5b947d8ba92b45093b4390e7] drm/panel: Add DT bindings for Samsung S6D27A1 display panel
git bisect bad 8b4e02c70fca482c5b947d8ba92b45093b4390e7
# bad: [804b6e5ee613b019b942ba6be52cccecd9d33655] drm/shmem-helpers: Allocate wc pages on x86
git bisect bad 804b6e5ee613b019b942ba6be52cccecd9d33655
# good: [8b93d1d7dbd578fd296e70008b29c0f62d09d7cb] drm/shmem-helper: Switch to vmf_insert_pfn
git bisect good 8b93d1d7dbd578fd296e70008b29c0f62d09d7cb
# first bad commit: [804b6e5ee613b019b942ba6be52cccecd9d33655] drm/shmem-helpers: Allocate wc pages on x86