Re: [PATCH v2 00/14] drm/msm/a8xx: GPU state capture support

[Alexander Koskovich]

On Wednesday, October 21st, 2026 at 4:54 PM, Rob Clark <robin.clark@xxxxxxxxxxxxxxxx> wrote:
> 
> I'd appreciate tested-by's on Hawi, Maili, Milos, and Pakala, since I
> don't have these devices at-hand to test myself.  In particular, do
> things look fine after the switch to generated nonctx regs.  To test
> devcoredump, you can use the msm_recovery test in igt.. or just:
> 
>   cat /sys/kernel/debug/dri/*/gpu > /dev/null
> 

Tested this series on Milos, series as is works fine for initial boot, navigating
around GNOME & apps etc, but when I run 'cat /sys/kernel/debug/dri/*/gpu', run
into an oops.

That is resolved after removing 0x20400-0x20487 from milos_gmucx_registers,
and removing 0x0f000-0x0f002 from milos_cp_cp_pipe_none_registers. Not sure
if access to these is restricted by TZ or something isn't configured right?
These ranges don't seem to be described downstream in adreno_gen8_3_0_snapshot.h.

After that 'cat /sys/kernel/debug/dri/*/gpu' works and I get a dump, did observe these errors in dmesg after though:

[   42.891106] platform 3d6c000.gmu: GMU fence error: 0x0
[   42.891142] platform 3d6c000.gmu: GMU fence error: 0x0
[   42.891157] platform 3d6c000.gmu: GMU fence error: 0x0
[   42.891171] platform 3d6c000.gmu: GMU fence error: 0x0
[   42.891184] platform 3d6c000.gmu: GMU fence error: 0x0
[   42.891198] platform 3d6c000.gmu: GMU fence error: 0x0
[   42.891211] platform 3d6c000.gmu: GMU fence error: 0x0
[   42.891224] platform 3d6c000.gmu: GMU fence error: 0x0
[   42.891237] platform 3d6c000.gmu: GMU fence error: 0x0
[   42.891250] platform 3d6c000.gmu: GMU fence error: 0x0
[   43.640122] ------------[ cut here ]------------
[   43.640137] msm_dpu ae01000.display-controller: [drm] crashdumper timed out: status=5c00bd00 (-110)
[   43.640222] WARNING: drivers/gpu/drm/msm/adreno/a8xx_gpu_state.c:115 at CD_RUN+0x20c/0x594 [msm], CPU#3: cat/1929
[   43.640419] Modules linked in: rfcomm q6apm_dai q6prm_clocks q6apm_lpass_dais snd_q6dsp_common q6prm algif_hash algif_skcipher bnep snd_q6apm panel_raydium_rm69220 fastrpc qcom_pd_mapper ath11k_ahb ath11k mac80211 hci_uart btqca bluetooth qcom_iris cfg80211 ecdh_generic msm ledtrig_pattern videobuf2_dma_contig ecc v4l2_mem2mem drm_dp_aux_bus videobuf2_memops qcom_q6v5_pas ocmem qcom_pil_info videobuf2_v4l2 pwrseq_qcom_wcn gpu_sched ipa pwrseq_core qmi_tmd focaltech_ft3683g qcom_q6v5 drm_gpuvm videobuf2_common drm_exec rfkill drm_display_helper ubwc_config cec qcom_common mdt_loader libarc4 nft_reject_inet nf_reject_ipv6 nf_reject_ipv4 nft_reject nft_ct nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables uhid fuse usb_f_ncm u_ether spi_geni_qcom evdev libcomposite
[   43.640750] CPU: 3 UID: 0 PID: 1929 Comm: cat Tainted: G S                   7.3.0-next-20261026 #3 PREEMPT(full) 
[   43.640763] Tainted: [S]=CPU_OUT_OF_SPEC
[   43.640770] Hardware name: Nothing Phone (3a) (DT)
[   43.640778] pstate: 61400005 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
[   43.640787] pc : CD_RUN+0x20c/0x594 [msm]
[   43.640972] lr : CD_RUN+0x208/0x594 [msm]
[   43.641155] sp : ffff8000891c3990
[   43.641161] x29: ffff8000891c3990 x28: ffffc3ee34aef850 x27: ffff000809253000
[   43.641180] x26: 0000000000000001 x25: 0000000000000001 x24: 0000000000000020
[   43.641198] x23: 0000000000000000 x22: 0000000000000000 x21: 0000000000002114
[   43.641216] x20: 0000000a28796b5c x19: ffff000813d7f000 x18: ffff8000891ad078
[   43.641233] x17: 3a74756f2064656d x16: 6974207265706d75 x15: 646873617263205d
[   43.641250] x14: 3fffffffffffefff x13: 0000000000000003 x12: ffffc3ee5c6649c0
[   43.641267] x11: 3fffffffffffefff x10: 0000000000000003 x9 : 9e14538c77bb2600
[   43.641284] x8 : 9e14538c77bb2600 x7 : 2e30303031306561 x6 : 207570645f6d736d
[   43.641301] x5 : ffffc3ee5cb061bf x4 : 0000000000000345 x3 : 0000000000000000
[   43.641318] x2 : 0000000000000000 x1 : ffff8000891c3790 x0 : 00000000ffffff92
[   43.641336] Call trace:
[   43.641343]  CD_RUN+0x20c/0x594 [msm] (P)
[   43.641530]  a8xx_gpu_state_get+0xdc4/0x2698 [msm]
[   43.641714]  msm_gpu_open+0xc0/0x134 [msm]
[   43.641898]  full_proxy_open_regular+0xe0/0x1e8
[   43.641913]  do_dentry_open+0x154/0x4d8
[   43.641927]  vfs_open_consume+0x40/0x114
[   43.641939]  path_openat+0x440/0x6a0
[   43.641950]  do_file_open+0xdc/0x198
[   43.641960]  do_sys_openat2+0x88/0x118
[   43.641972]  __arm64_sys_openat+0x78/0xac
[   43.641985]  invoke_syscall+0x6c/0x12c
[   43.641997]  el0_svc_common+0x98/0xf0
[   43.642007]  do_el0_svc+0x28/0x38
[   43.642016]  el0_svc+0x4c/0x1ac
[   43.642031]  el0t_64_sync_handler+0x6c/0xe4
[   43.642043]  el0t_64_sync+0x1a0/0x1a4
[   43.642056] ---[ end trace 0000000000000000 ]---


Thanks,
Alex