Bug 110604

Summary:

AMD WX4150 hangs in aux_read call for REG_RC_CAP

Product:

DRI

Reporter:

Jason <pritchard.jason>

Component:

DRM/AMDgpu

Assignee:

Default DRI bug account <dri-devel>

Status:

RESOLVED MOVED

QA Contact:

Severity:

minor

Priority:

low

CC:

kai.heng.feng, nicholas.kazlauskas, pritchard.jason, vicamo

Version:

unspecified

Hardware:

x86-64 (AMD64)

OS:

Linux (All)

URL:

https://bugs.launchpad.net/ubuntu/+source/fwupd/+bug/1826691

Whiteboard:

i915 platform:

i915 features:

Attachments:

Description	Flags
Test file: read-dpcd.c	none

Description Jason 2019-05-04 04:26:59 UTC

Created attachment 144154 [details]
Test file: read-dpcd.c

While working with the Ubuntu maintainers of fwupd, they've determined that I have an issue with the AMD driver on Ubuntu's 5.0 kernel in 19.04. In the sample program that they provided (see read-dpcd.c attached) the call to aux_read(fd, REG_RC_CAP, buf, 1) hangs on my machine. They recommended I post the issue here.

Machine is a Dell 7730 with AMD WX4150 graphics.

See the original bug report here:
https://bugs.launchpad.net/ubuntu/+source/fwupd/+bug/1826691


Not sure if it's related, but here are dmesg warnings from the other ticket.

Apr 23 19:29:14 texas kernel: [ 133.673290] [drm] REG_WAIT timeout 10us * 160 tries - submit_channel_request line:246
Apr 23 19:29:14 texas kernel: [ 133.673348] WARNING: CPU: 6 PID: 2467 at drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:249 generic_reg_wait.cold.3+0x25/0x2c [amdgpu]
Apr 23 19:29:14 texas kernel: [ 133.673349] Modules linked in: thunderbolt rfcomm xt_owner ip6table_filter ip6_tables ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c bridge xt_CHECKSUM xt_tcpudp stp llc iptable_filter iptable_mangle bpfilter ccm snd_hda_codec_realtek snd_hda_codec_generic pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) cmac vboxdrv(OE) bnep binfmt_misc dell_rbtn nls_iso8859_1 joydev arc4 snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core snd_soc_skl_ipc snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_acpi_intel_match snd_soc_acpi snd_soc_core snd_compress ac97_bus intel_rapl snd_pcm_dmaengine x86_pkg_temp_thermal intel_powerclamp coretemp snd_hda_codec_hdmi kvm_intel snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep crct10dif_pclmul i915 snd_pcm crc32_pclmul iwlmvm uvcvideo amdgpu snd_seq_midi ghash_clmulni_intel snd_seq_midi_event mac80211 videobuf2_vmalloc kvmgt videobuf2_memops vfio_mdev videobuf2_v4l2 snd_rawmidi dell_laptop mdev videobuf2_common
Apr 23 19:29:14 texas kernel: [ 133.673362] ledtrig_audio vfio_iommu_type1 videodev dell_smm_hwmon vfio snd_seq dell_wmi media kvm chash btusb snd_seq_device amd_iommu_v2 btrtl snd_timer btbcm dell_smbios gpu_sched irqbypass btintel dcdbas ttm aesni_intel iwlwifi bluetooth drm_kms_helper aes_x86_64 crypto_simd cryptd glue_helper rtsx_pci_ms input_leds snd drm ecdh_generic intel_cstate mei_me ucsi_acpi cfg80211 serio_raw dell_wmi_descriptor intel_wmi_thunderbolt wmi_bmof memstick i2c_algo_bit mei fb_sys_fops intel_rapl_perf idma64 syscopyarea hid_multitouch processor_thermal_device soundcore sysfillrect virt_dma typec_ucsi sysimgblt intel_soc_dts_iosf intel_pch_thermal typec int3403_thermal int340x_thermal_zone dell_smo8800 acpi_pad intel_hid int3400_thermal mac_hid acpi_thermal_rel sparse_keymap sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic rtsx_pci_sdmmc nvme e1000e i2c_i801 intel_lpss_pci rtsx_pci nvme_core intel_lpss i2c_hid wmi hid video pinctrl_cannonlake pinctrl_intel
Apr 23 19:29:14 texas kernel: [ 133.673381] CPU: 6 PID: 2467 Comm: fwupd Tainted: G OE 5.0.0-13-generic #14-Ubuntu
Apr 23 19:29:14 texas kernel: [ 133.673382] Hardware name: Dell Inc. Precision 7730/05W5TJ, BIOS 1.7.0 02/19/2019
Apr 23 19:29:14 texas kernel: [ 133.673417] RIP: 0010:generic_reg_wait.cold.3+0x25/0x2c [amdgpu]
Apr 23 19:29:14 texas kernel: [ 133.673418] Code: e9 37 7e fe ff 44 8b 45 20 48 8b 4d 18 48 c7 c7 40 34 17 c1 8b 55 10 8b 75 d4 e8 3b ce 82 e1 41 83 7d 20 01 0f 84 0c c3 fe ff <0f> 0b e9 05 c3 fe ff 55 48 89 e5 e8 5d de ec ff 48 c7 c7 00 a0 18
Apr 23 19:29:14 texas kernel: [ 133.673419] RSP: 0018:ffffbbaa0612fbb0 EFLAGS: 00010297
Apr 23 19:29:14 texas kernel: [ 133.673420] RAX: 0000000000000049 RBX: 00000000000000a1 RCX: 0000000000000000
Apr 23 19:29:14 texas kernel: [ 133.673420] RDX: 0000000000000000 RSI: ffff94843c196448 RDI: ffff94843c196448
Apr 23 19:29:14 texas kernel: [ 133.673420] RBP: ffffbbaa0612fbf8 R08: 0000000000000001 R09: 00000000000004fa
Apr 23 19:29:14 texas kernel: [ 133.673421] R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000005c04
Apr 23 19:29:14 texas kernel: [ 133.673421] R13: ffff948431de5840 R14: 00000000ffffffff R15: ffff948431de5840
Apr 23 19:29:14 texas kernel: [ 133.673422] FS: 00007ff849b11b40(0000) GS:ffff94843c180000(0000) knlGS:0000000000000000
Apr 23 19:29:14 texas kernel: [ 133.673422] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Apr 23 19:29:14 texas kernel: [ 133.673423] CR2: 00007ff83400f6d8 CR3: 0000000847680006 CR4: 00000000003606e0
Apr 23 19:29:14 texas kernel: [ 133.673423] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Apr 23 19:29:14 texas kernel: [ 133.673424] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Apr 23 19:29:14 texas kernel: [ 133.673424] Call Trace:
Apr 23 19:29:14 texas kernel: [ 133.673461] submit_channel_request+0x3fd/0x780 [amdgpu]
Apr 23 19:29:14 texas kernel: [ 133.673492] dc_link_aux_transfer+0xc6/0x150 [amdgpu]
Apr 23 19:29:14 texas kernel: [ 133.673526] dm_dp_aux_transfer+0x61/0x130 [amdgpu]
Apr 23 19:29:14 texas kernel: [ 133.673531] drm_dp_dpcd_access+0x75/0x110 [drm_kms_helper]
Apr 23 19:29:14 texas kernel: [ 133.673533] drm_dp_dpcd_read+0x33/0xc0 [drm_kms_helper]
Apr 23 19:29:14 texas kernel: [ 133.673537] auxdev_read_iter+0xe6/0x1a0 [drm_kms_helper]
Apr 23 19:29:14 texas kernel: [ 133.673539] new_sync_read+0x109/0x170
Apr 23 19:29:14 texas kernel: [ 133.673541] __vfs_read+0x29/0x40
Apr 23 19:29:14 texas kernel: [ 133.673542] vfs_read+0x99/0x160
Apr 23 19:29:14 texas kernel: [ 133.673542] ksys_read+0x55/0xc0
Apr 23 19:29:14 texas kernel: [ 133.673543] __x64_sys_read+0x1a/0x20
Apr 23 19:29:14 texas kernel: [ 133.673545] do_syscall_64+0x5a/0x110
Apr 23 19:29:14 texas kernel: [ 133.673546] entry_SYSCALL_64_after_hwframe+0x44/0xa9
Apr 23 19:29:14 texas kernel: [ 133.673547] RIP: 0033:0x7ff84ccb4d94
Apr 23 19:29:14 texas kernel: [ 133.673548] Code: 84 00 00 00 00 00 41 54 49 89 d4 55 48 89 f5 53 89 fb 48 83 ec 10 e8 5b fc ff ff 4c 89 e2 48 89 ee 89 df 41 89 c0 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 38 44 89 c7 48 89 44 24 08 e8 97 fc ff ff 48
Apr 23 19:29:14 texas kernel: [ 133.673548] RSP: 002b:00007ffe268d7130 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
Apr 23 19:29:14 texas kernel: [ 133.673549] RAX: ffffffffffffffda RBX: 0000000000000013 RCX: 00007ff84ccb4d94
Apr 23 19:29:14 texas kernel: [ 133.673549] RDX: 0000000000000001 RSI: 00007ffe268d7194 RDI: 0000000000000013
Apr 23 19:29:14 texas kernel: [ 133.673550] RBP: 00007ffe268d7194 R08: 0000000000000000 R09: 00007ff84cca13d0
Apr 23 19:29:14 texas kernel: [ 133.673550] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
Apr 23 19:29:14 texas kernel: [ 133.673550] R13: 00007ffe268d7200 R14: 0000000000000001 R15: 000056469f7bd0e0
Apr 23 19:29:14 texas kernel: [ 133.673552] ---[ end trace b363bbe01edada49 ]---
Apr 23 19:29:14 texas kernel: [ 133.673574] BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
Apr 23 19:29:14 texas kernel: [ 133.673576] #PF error: [normal kernel read fault]
Apr 23 19:29:14 texas kernel: [ 133.673577] PGD 0 P4D 0
Apr 23 19:29:14 texas kernel: [ 133.673578] Oops: 0000 [#1] SMP PTI
Apr 23 19:29:14 texas kernel: [ 133.673579] CPU: 6 PID: 2467 Comm: fwupd Tainted: G W OE 5.0.0-13-generic #14-Ubuntu
Apr 23 19:29:14 texas kernel: [ 133.673580] Hardware name: Dell Inc. Precision 7730/05W5TJ, BIOS 1.7.0 02/19/2019
Apr 23 19:29:14 texas kernel: [ 133.673614] RIP: 0010:dal_ddc_close+0xd/0x30 [amdgpu]
Apr 23 19:29:14 texas kernel: [ 133.673615] Code: e8 38 f5 ff ff 48 8b 55 f8 65 48 33 14 25 28 00 00 00 75 02 c9 c3 e8 02 01 84 e1 66 90 0f 1f 44 00 00 55 48 89 e5 53 48 89 fb <48> 8b 7f 08 e8 0a f6 ff ff 48 8b 3b e8 02 f6 ff ff 5b 5d c3 66 2e
Apr 23 19:29:14 texas kernel: [ 133.673615] RSP: 0018:ffffbbaa0612fc28 EFLAGS: 00010246
Apr 23 19:29:14 texas kernel: [ 133.673616] RAX: ffffffffc1052ad0 RBX: 0000000000000000 RCX: 0000000000000000
Apr 23 19:29:14 texas kernel: [ 133.673617] RDX: 00000000ffffffff RSI: 0000000000005c04 RDI: 0000000000000000
Apr 23 19:29:14 texas kernel: [ 133.673617] RBP: ffffbbaa0612fc30 R08: 0000000000000001 R09: 000000000000000a
Apr 23 19:29:14 texas kernel: [ 133.673618] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
Apr 23 19:29:14 texas kernel: [ 133.673618] R13: ffffbbaa0612fdc0 R14: 0000000000000000 R15: 0000000000000000
Apr 23 19:29:14 texas kernel: [ 133.673619] FS: 00007ff849b11b40(0000) GS:ffff94843c180000(0000) knlGS:0000000000000000
Apr 23 19:29:14 texas kernel: [ 133.673620] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Apr 23 19:29:14 texas kernel: [ 133.673620] CR2: 0000000000000008 CR3: 0000000847680006 CR4: 00000000003606e0
Apr 23 19:29:14 texas kernel: [ 133.673621] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Apr 23 19:29:14 texas kernel: [ 133.673622] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Apr 23 19:29:14 texas kernel: [ 133.673622] Call Trace:
Apr 23 19:29:14 texas kernel: [ 133.673657] release_engine+0x1e/0xd0 [amdgpu]
Apr 23 19:29:14 texas kernel: [ 133.673687] dc_link_aux_transfer+0xfc/0x150 [amdgpu]
Apr 23 19:29:14 texas kernel: [ 133.673720] dm_dp_aux_transfer+0x61/0x130 [amdgpu]
Apr 23 19:29:14 texas kernel: [ 133.673723] drm_dp_dpcd_access+0x75/0x110 [drm_kms_helper]
Apr 23 19:29:14 texas kernel: [ 133.673726] drm_dp_dpcd_read+0x33/0xc0 [drm_kms_helper]
Apr 23 19:29:14 texas kernel: [ 133.673730] auxdev_read_iter+0xe6/0x1a0 [drm_kms_helper]
Apr 23 19:29:14 texas kernel: [ 133.673731] new_sync_read+0x109/0x170
Apr 23 19:29:14 texas kernel: [ 133.673733] __vfs_read+0x29/0x40
Apr 23 19:29:14 texas kernel: [ 133.673734] vfs_read+0x99/0x160
Apr 23 19:29:14 texas kernel: [ 133.673735] ksys_read+0x55/0xc0
Apr 23 19:29:14 texas kernel: [ 133.673736] __x64_sys_read+0x1a/0x20
Apr 23 19:29:14 texas kernel: [ 133.673737] do_syscall_64+0x5a/0x110
Apr 23 19:29:14 texas kernel: [ 133.673738] entry_SYSCALL_64_after_hwframe+0x44/0xa9
Apr 23 19:29:14 texas kernel: [ 133.673739] RIP: 0033:0x7ff84ccb4d94
Apr 23 19:29:14 texas kernel: [ 133.673740] Code: 84 00 00 00 00 00 41 54 49 89 d4 55 48 89 f5 53 89 fb 48 83 ec 10 e8 5b fc ff ff 4c 89 e2 48 89 ee 89 df 41 89 c0 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 38 44 89 c7 48 89 44 24 08 e8 97 fc ff ff 48
Apr 23 19:29:14 texas kernel: [ 133.673740] RSP: 002b:00007ffe268d7130 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
Apr 23 19:29:14 texas kernel: [ 133.673741] RAX: ffffffffffffffda RBX: 0000000000000013 RCX: 00007ff84ccb4d94
Apr 23 19:29:14 texas kernel: [ 133.673742] RDX: 0000000000000001 RSI: 00007ffe268d7194 RDI: 0000000000000013
Apr 23 19:29:14 texas kernel: [ 133.673742] RBP: 00007ffe268d7194 R08: 0000000000000000 R09: 00007ff84cca13d0
Apr 23 19:29:14 texas kernel: [ 133.673743] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
Apr 23 19:29:14 texas kernel: [ 133.673743] R13: 00007ffe268d7200 R14: 0000000000000001 R15: 000056469f7bd0e0
Apr 23 19:29:14 texas kernel: [ 133.673744] Modules linked in: thunderbolt rfcomm xt_owner ip6table_filter ip6_tables ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c bridge xt_CHECKSUM xt_tcpudp stp llc iptable_filter iptable_mangle bpfilter ccm snd_hda_codec_realtek snd_hda_codec_generic pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) cmac vboxdrv(OE) bnep binfmt_misc dell_rbtn nls_iso8859_1 joydev arc4 snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core snd_soc_skl_ipc snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_acpi_intel_match snd_soc_acpi snd_soc_core snd_compress ac97_bus intel_rapl snd_pcm_dmaengine x86_pkg_temp_thermal intel_powerclamp coretemp snd_hda_codec_hdmi kvm_intel snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep crct10dif_pclmul i915 snd_pcm crc32_pclmul iwlmvm uvcvideo amdgpu snd_seq_midi ghash_clmulni_intel snd_seq_midi_event mac80211 videobuf2_vmalloc kvmgt videobuf2_memops vfio_mdev videobuf2_v4l2 snd_rawmidi dell_laptop mdev videobuf2_common
Apr 23 19:29:14 texas kernel: [ 133.673754] ledtrig_audio vfio_iommu_type1 videodev dell_smm_hwmon vfio snd_seq dell_wmi media kvm chash btusb snd_seq_device amd_iommu_v2 btrtl snd_timer btbcm dell_smbios gpu_sched irqbypass btintel dcdbas ttm aesni_intel iwlwifi bluetooth drm_kms_helper aes_x86_64 crypto_simd cryptd glue_helper rtsx_pci_ms input_leds snd drm ecdh_generic intel_cstate mei_me ucsi_acpi cfg80211 serio_raw dell_wmi_descriptor intel_wmi_thunderbolt wmi_bmof memstick i2c_algo_bit mei fb_sys_fops intel_rapl_perf idma64 syscopyarea hid_multitouch processor_thermal_device soundcore sysfillrect virt_dma typec_ucsi sysimgblt intel_soc_dts_iosf intel_pch_thermal typec int3403_thermal int340x_thermal_zone dell_smo8800 acpi_pad intel_hid int3400_thermal mac_hid acpi_thermal_rel sparse_keymap sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic rtsx_pci_sdmmc nvme e1000e i2c_i801 intel_lpss_pci rtsx_pci nvme_core intel_lpss i2c_hid wmi hid video pinctrl_cannonlake pinctrl_intel
Apr 23 19:29:14 texas kernel: [ 133.673765] CR2: 0000000000000008
Apr 23 19:29:14 texas kernel: [ 133.673766] ---[ end trace b363bbe01edada4a ]---
Apr 23 19:29:14 texas kernel: [ 133.696801] RIP: 0010:dal_ddc_close+0xd/0x30 [amdgpu]
Apr 23 19:29:14 texas kernel: [ 133.696804] Code: e8 38 f5 ff ff 48 8b 55 f8 65 48 33 14 25 28 00 00 00 75 02 c9 c3 e8 02 01 84 e1 66 90 0f 1f 44 00 00 55 48 89 e5 53 48 89 fb <48> 8b 7f 08 e8 0a f6 ff ff 48 8b 3b e8 02 f6 ff ff 5b 5d c3 66 2e
Apr 23 19:29:14 texas kernel: [ 133.696805] RSP: 0018:ffffbbaa0612fc28 EFLAGS: 00010246
Apr 23 19:29:14 texas kernel: [ 133.696806] RAX: ffffffffc1052ad0 RBX: 0000000000000000 RCX: 0000000000000000
Apr 23 19:29:14 texas kernel: [ 133.696807] RDX: 00000000ffffffff RSI: 0000000000005c04 RDI: 0000000000000000
Apr 23 19:29:14 texas kernel: [ 133.696808] RBP: ffffbbaa0612fc30 R08: 0000000000000001 R09: 000000000000000a
Apr 23 19:29:14 texas kernel: [ 133.696809] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
Apr 23 19:29:14 texas kernel: [ 133.696809] R13: ffffbbaa0612fdc0 R14: 0000000000000000 R15: 0000000000000000
Apr 23 19:29:14 texas kernel: [ 133.696810] FS: 00007ff849b11b40(0000) GS:ffff94843c180000(0000) knlGS:0000000000000000
Apr 23 19:29:14 texas kernel: [ 133.696811] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Apr 23 19:29:14 texas kernel: [ 133.696812] CR2: 0000000000000008 CR3: 0000000847680006 CR4: 00000000003606e0
Apr 23 19:29:14 texas kernel: [ 133.696813] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Apr 23 19:29:14 texas kernel: [ 133.696813] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Comment 1 Martin Peres 2019-11-19 09:19:56 UTC

-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/760.

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