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Message-ID: <20251215160520.55812-1-aishwarya.tcv@arm.com>
Date: Mon, 15 Dec 2025 16:05:20 +0000
From: Aishwarya <aishwarya.tcv@....com>
To: karunika.choo@....com
Cc: airlied@...il.com,
boris.brezillon@...labora.com,
dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org,
liviu.dudau@....com,
maarten.lankhorst@...ux.intel.com,
mripard@...nel.org,
nd@....com,
simona@...ll.ch,
steven.price@....com,
tzimmermann@...e.de,
broonie@...nel.org
Subject: Re: [PATCH v5 6/8] drm/panthor: Support GLB_REQ.STATE field for Mali-G1 GPUs
Hi Karunika,
Booting v6.19-rc1 on rk3588-rock-5b succeeds, but the kernel log shows a
panthor firmware load failure followed by a NULL pointer dereference in
panthor_fw_halt_mcu() during probe. The driver fails to load
arm/mali/arch10.8/mali_csffw.bin with -ENOENT.
A git bisect identified the first bad commit as:
51407254986501b19681d55531963f1ea58e89cd
drm/panthor: Support GLB_REQ.STATE field for Mali-G1 GPUs
Failure log (v6.19-rc1):
<4>[ 16.915783] panthor fb000000.gpu: Direct firmware load for arm/mali/arch10.8/mali_csffw.bin failed with error -2
<3>[ 16.916754] panthor fb000000.gpu: [drm] *ERROR* Failed to load firmware image 'mali_csffw.bin'
<1>[ 16.917542] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
<1>[ 16.918329] Mem abort info:
<1>[ 16.918598] ESR = 0x0000000096000004
<1>[ 16.918949] EC = 0x25: DABT (current EL), IL = 32 bits
<1>[ 16.919436] SET = 0, FnV = 0
<1>[ 16.919742] EA = 0, S1PTW = 0
<1>[ 16.920041] FSC = 0x04: level 0 translation fault
<1>[ 16.920489] Data abort info:
<1>[ 16.920766] ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000
<1>[ 16.921269] CM = 0, WnR = 0, TnD = 0, TagAccess = 0
<1>[ 16.921272] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
<1>[ 16.921275] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000117ca8000
<1>[ 16.922802] [0000000000000000] pgd=0000000000000000, p4d=0000000000000000
<0>[ 16.923423] Internal error: Oops: 0000000096000004 [#1] SMP
[[0;32m OK [0m] Started [0;1;39mgetty@...1.service[0m - Ge<4>[ 16.923941]
Modules linked in: pci_endpoint_test snd_soc_audio_graph_card
snd_soc_simple_card_utils rockchipdrm snd_soc_core snd_compress panthor(+)
snd_pcm_dmaengine drm_gpuvm drm_exec dw_hdmi_qp analogix_dp dw_dp
dw_mipi_dsi drm_dp_aux_bus dw_hdmi drm_shmem_helper drm_display_helper snd_pcm
cec gpu_sched drm_client_lib drm_dma_helper snd_timer drm_kms_helper snd
soundcore drm backlight dm_mod ipv6
<4>[ 16.927513] CPU: 2 UID: 0 PID: 187 Comm: (udev-worker) Not tainted 6.19.0-rc1 #1 PREEMPT
<4>[ 16.928357] Hardware name: Radxa ROCK 5B (DT)
<4>[ 16.928761] pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
<4>[ 16.929392] pc : panthor_fw_halt_mcu+0x24/0x98 [panthor]
<4>[ 16.929901] lr : panthor_fw_unplug+0x54/0x134 [panthor]
<4>[ 16.930394] sp : ffff800084cf3750
<4>[ 16.930707] x29: ffff800084cf3750 x28: ffff000101d1b000 x27: 0000000000000000
<4>[ 16.931358] x26: ffff80007b36b618 x25: 0000000000000000 x24: ffff000101d1b800
<4>[ 16.932008] x23: ffff80007b373de0 x22: ffff00010126b010 x21: ffff000101d1b000
<4>[ 16.932657] x20: ffff000101d1b000 x19: ffff00011b4200a0 x18: 0000000000000006
<4>[ 16.933310] x17: 67616d6920657261 x16: 776d726966206461 x15: 6f6c206f74206465
<4>[ 16.933963] x14: 6c696146202a524f x13: ffff800082aa6c40 x12: 0000000000000630
<4>[ 16.933970] x11: 0000000000000210 x10: ffff800082afec40 x9 : 1fffe0002039be41
<4>[ 16.935258] x8 : 0000000000000001 x7 : ffff000101cdf200 x6 : ffff0001165f1830
<4>[ 16.935908] x5 : 000000000000007c x4 : 000000000000007c x3 : 0000000000000000
<4>[ 16.936557] x2 : 0000000000000000 x1 : 000000000400ffff x0 : 0000000000000000
[[0;32m OK [0m] Started [0;1;39mserial-getty@...S2…rvice<4>[ 16.937207] Call trace:
[0m - Serial Getty on ttyS2.
<4>[ 16.937924] panthor_fw_halt_mcu+0x24/0x98 [panthor] (P)
<4>[ 16.938640] panthor_fw_unplug+0x54/0x134 [panthor]
<4>[ 16.939104] panthor_fw_init+0x1a8/0x81c [panthor]
<4>[ 16.939561] panthor_device_init+0x350/0x4fc [panthor]
<4>[ 16.940046] panthor_probe+0x3c/0x60 [panthor]
<4>[ 16.940473] platform_probe+0x5c/0x98
<4>[ 16.940823] really_probe+0xbc/0x298
<4>[ 16.941164] __driver_probe_device+0x78/0x12c
<4>[ 16.941572] driver_probe_device+0x3c/0x15c
<4>[ 16.941965] __driver_attach+0x94/0x19c
<4>[ 16.942328] bus_for_each_dev+0x78/0xd4
<4>[ 16.942691] driver_attach+0x24/0x30
<4>[ 16.943031] bus_add_driver+0xe4/0x208
<4>[ 16.943385] driver_register+0x60/0x128
<4>[ 16.943747] __platform_driver_register+0x24/0x30
<4>[ 16.944184] panthor_init+0x64/0x1000 [panthor]
<4>[ 16.944618] do_one_initcall+0x80/0x1c4
<4>[ 16.944981] do_init_module+0x58/0x234
<4>[ 16.945336] load_module+0x1c54/0x1c98
<4>[ 16.945691] init_module_from_file+0xd4/0xec
<4>[ 16.946091] __arm64_sys_finit_module+0x144/0x324
<4>[ 16.946528] invoke_syscall+0x48/0x110
<4>[ 16.946883] el0_svc_common.constprop.0+0xc0/0xe0
<4>[ 16.947321] do_el0_svc+0x1c/0x28
<4>[ 16.947638] el0_svc+0x34/0x10c
<4>[ 16.947940] el0t_64_sync_handler+0xa0/0xe4
<4>[ 16.948335] el0t_64_sync+0x198/0x19c
<0>[ 16.948344] Code: aa0003f4 f9438413 91008273 f9400660 (b9400000)
<4>[ 16.949233] ---[ end trace 0000000000000000 ]---
[[0;32m OK [0m] Reached target [0;1;39mgetty.target[0m - Login Prompts.
[[0;32m OK [0m] Reached target [0;1;39mmulti-user.target[0m - Multi-User System.
<6>[ 16.956742] mc: Linux media interface: v0.10
<6>[ 16.958944] videodev: Linux video capture interface: v2.00
[[0;32m OK [0m] Reached target [0;1;39mgraphical.target[0m - Graphical Interface.
Starting [0;1;39msystemd-update-ut… Record Runlevel Change in UTMP...
[[0;32m OK [0m] Finished [0;1;39msystemd-update-ut… - Record Runlevel Change in UTMP.
<6>[ 17.034547] rockchip-rga fdb80000.rga: HW Version: 0x03.02
<6>[ 17.035459] snps_hdmirx fdee0000.hdmi_receiver: assigned reserved memory node hdmi-receiver-cma
<6>[ 17.038646] rockchip-rga fdb80000.rga: Registered rockchip-rga as /dev/video0
<6>[ 17.040732] hantro-vpu fdb50000.video-codec: registered rockchip,rk3568-vpu-dec as /dev/video2
Debian GNU/Linux 12 debian-bookworm-arm64 ttyS2
Bisect log summary:
git bisect start
# good: [7d0a66e4bb9081d75c82ec4957c50034cb0ea449] Linux 6.18
git bisect good 7d0a66e4bb9081d75c82ec4957c50034cb0ea449
# bad: [d9771d0dbe18dd643760431870a6abf9b0866bb0] Add linux-next specific files for 20251212
git bisect bad d9771d0dbe18dd643760431870a6abf9b0866bb0
# bad: [2aa680df68062e4e0c356ec2aa7100c13654907b] Merge tag 'sound-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
git bisect bad 2aa680df68062e4e0c356ec2aa7100c13654907b
# good: [8f7aa3d3c7323f4ca2768a9e74ebbe359c4f8f88] Merge tag 'net-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
git bisect good 8f7aa3d3c7323f4ca2768a9e74ebbe359c4f8f88
# bad: [b3239df349c2c2c94686674489c9629c89ca49a1] Merge tag 'drm-misc-next-2025-12-01-1' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next
git bisect bad b3239df349c2c2c94686674489c9629c89ca49a1
# good: [2e640e8e7b9e9fc0f42c1e15ea0e02d00916ad57] drm/amd/pm: Update default power1_cap
git bisect good 2e640e8e7b9e9fc0f42c1e15ea0e02d00916ad57
# good: [89b34ebed02ee39ae02069dcf2e5728aceec9deb] drm/panel: ilitek-ili9881d: Add support for Wanchanglong W552946AAA panel
git bisect good 89b34ebed02ee39ae02069dcf2e5728aceec9deb
# good: [31d3354f42c0da34415164a1f621a195caa1f1bc] drm/nouveau: verify that hardware supports the flush page address
git bisect good 31d3354f42c0da34415164a1f621a195caa1f1bc
# good: [ee31621316cc20108eb2075de5d57f2cbd295677] Merge tag 'drm-msm-next-2025-11-18' of https://gitlab.freedesktop.org/drm/msm into drm-next
git bisect good ee31621316cc20108eb2075de5d57f2cbd295677
# bad: [e5719e7f19009d4fbedf685fc22eec9cd8de154f] drm/colorop: Add 3x4 CTM type
git bisect bad e5719e7f19009d4fbedf685fc22eec9cd8de154f
# good: [b1075ae1a3b56fd0b1275caf51bcc633f665bb19] drm/panthor: Add arch-specific panthor_hw binding
git bisect good b1075ae1a3b56fd0b1275caf51bcc633f665bb19
# bad: [303e9bf147b3a1b48a6d7079f2924b7d43662805] drm/vkms: Add kunit tests for VKMS LUT handling
git bisect bad 303e9bf147b3a1b48a6d7079f2924b7d43662805
# bad: [ab3490493c73374862e47ccc00d3dbb89228f86e] drm/panthor: Add support for Mali-G1 GPUs
git bisect bad ab3490493c73374862e47ccc00d3dbb89228f86e
# good: [ee4f9af07933648f2f9337d7b24da5562a594399] drm/panthor: Implement L2 power on/off via PWR_CONTROL
git bisect good ee4f9af07933648f2f9337d7b24da5562a594399
# bad: [51407254986501b19681d55531963f1ea58e89cd] drm/panthor: Support GLB_REQ.STATE field for Mali-G1 GPUs
git bisect bad 51407254986501b19681d55531963f1ea58e89cd
# good: [9ee52f5cdc45e397fddad2a9ed879c72a8fcfa65] drm/panthor: Implement soft reset via PWR_CONTROL
git bisect good 9ee52f5cdc45e397fddad2a9ed879c72a8fcfa65
# first bad commit: [51407254986501b19681d55531963f1ea58e89cd] drm/panthor: Support GLB_REQ.STATE field for Mali-G1 GPUs
Please let me know if further testing on rk3588-rock-5b would be helpful.
Thanks,
Aishwarya
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