| Summary: | WARNING: CPU: 11 PID: 1137 at drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_mst_types.c:88 dm_dp_aux_transfer+0xa5/0xc0 [amdgpu] | ||||||
|---|---|---|---|---|---|---|---|
| Product: | DRI | Reporter: | Marc Thomas <marc> | ||||
| Component: | DRM/AMDgpu | Assignee: | Default DRI bug account <dri-devel> | ||||
| Status: | RESOLVED MOVED | QA Contact: | |||||
| Severity: | normal | ||||||
| Priority: | medium | CC: | marc | ||||
| Version: | unspecified | ||||||
| Hardware: | x86-64 (AMD64) | ||||||
| OS: | Linux (All) | ||||||
| Whiteboard: | |||||||
| i915 platform: | i915 features: | ||||||
| Attachments: |
|
||||||
I still see this in 4.18.9. I found that udevd is running "/usr/bin/xcmddc --i2c /dev/i2c-7 --identify" during boot and it causes these warnings to be displayed. Latest from 4.18.9, caused by manually running "xcmddc -lv" : [ 72.162951] WARNING: CPU: 15 PID: 1886 at drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_mst_types.c:88 dm_dp_aux_transfer+0xa5/0xb0 [amdgpu] [ 72.162952] Modules linked in: nct6775 hwmon_vid jc42 amd64_edac_mod edac_mce_amd pci_stub vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) ipv6 cmac bnep nls_iso8859_1 nls_cp437 vfat fat fuse rc_pinnacle_pctv_hd em28xx_rc rc_core si2157 si2168 i2c_mux em28xx_dvb dvb_core btusb em28xx btrtl btbcm tveeprom btintel v4l2_common videodev bluetooth ecdh_generic rfkill amdkfd amd_iommu_v2 amdgpu snd_hda_codec_realtek chash i2c_dev snd_hda_codec_generic mxm_wmi wmi_bmof snd_hda_codec_hdmi gpu_sched kvm_amd ttm snd_hda_intel snd_hda_codec drm_kms_helper igb kvm snd_hda_core drm snd_hwdep ptp snd_pcm evdev psmouse irqbypass pps_core snd_timer agpgart crct10dif_pclmul crc32_pclmul fb_sys_fops crc32c_intel dca efi_pstore syscopyarea sysfillrect k10temp i2c_piix4 i2c_algo_bit serio_raw ghash_clmulni_intel snd [ 72.162985] sysimgblt efivars soundcore hwmon i2c_core ccp xhci_pci xhci_hcd wmi pcc_cpufreq button acpi_cpufreq loop dm_snapshot dm_bufio ext4 mbcache jbd2 [ 72.162995] CPU: 15 PID: 1886 Comm: xcmddc Tainted: G W O 4.18.9 #1 [ 72.162996] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./X370 Taichi, BIOS P4.70 04/17/2018 [ 72.163053] RIP: 0010:dm_dp_aux_transfer+0xa5/0xb0 [amdgpu] [ 72.163053] Code: be 01 00 00 00 48 8b bf 50 04 00 00 5b e9 a3 99 07 00 4c 8b 46 08 8b 0e 31 d2 31 f6 48 8b bf 50 04 00 00 e8 2d 9a 07 00 eb c6 <0f> 0b 48 c7 c0 f9 ff ff ff 5b c3 0f 1f 44 00 00 41 57 41 56 41 55 [ 72.163076] RSP: 0018:ffffbe2380d9bcc8 EFLAGS: 00010286 [ 72.163077] RAX: 0000000000000005 RBX: 0000000000000007 RCX: 0000000000000238 [ 72.163078] RDX: 0000000000000001 RSI: ffffbe2380d9bd48 RDI: ffff9756f60c48a0 [ 72.163079] RBP: ffff9756f60c48a0 R08: 00000000000240c0 R09: fffffffffffffffb [ 72.163080] R10: ffffe748dfe98f40 R11: ffffbe2380d9baa8 R12: ffffbe2380d9bd48 [ 72.163081] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffffc1285cd4 [ 72.163083] FS: 00007f2adf318bc0(0000) GS:ffff97571efc0000(0000) knlGS:0000000000000000 [ 72.163084] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.163085] CR2: 00007f2ae07d9ff0 CR3: 00000007e9802000 CR4: 00000000003406e0 [ 72.163085] Call Trace: [ 72.163094] drm_dp_i2c_do_msg+0x90/0x290 [drm_kms_helper] [ 72.163098] ? __switch_to_asm+0x34/0x70 [ 72.163104] drm_dp_i2c_xfer+0x155/0x250 [drm_kms_helper] [ 72.163110] __i2c_transfer+0x123/0x410 [i2c_core] [ 72.163112] ? __switch_to_asm+0x40/0x70 [ 72.163116] i2c_transfer+0x55/0xa0 [i2c_core] [ 72.163120] i2c_transfer_buffer_flags+0x4c/0x70 [i2c_core] [ 72.163123] i2cdev_read+0x5f/0xd0 [i2c_dev] [ 72.163125] __vfs_read+0x36/0x180 [ 72.163128] vfs_read+0x8a/0x140 [ 72.163130] ksys_read+0x4f/0xb0 [ 72.163133] do_syscall_64+0x55/0x100 [ 72.163136] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 72.163137] RIP: 0033:0x7f2ae08605e1 [ 72.163138] Code: fe ff ff 50 48 8d 3d 2e 27 0a 00 e8 49 21 02 00 66 0f 1f 84 00 00 00 00 00 48 8d 05 19 c1 0d 00 8b 00 85 c0 75 13 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 57 c3 66 0f 1f 44 00 00 41 54 49 89 d4 55 48 [ 72.163159] RSP: 002b:00007ffe53d875c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 72.163161] RAX: ffffffffffffffda RBX: 000000000000000a RCX: 00007f2ae08605e1 [ 72.163162] RDX: 0000000000000080 RSI: 0000000001db9d20 RDI: 000000000000000a [ 72.163162] RBP: 00007f2ae0cd1258 R08: 0000000001db9d20 R09: 0000000000000000 [ 72.163163] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe53d875d0 [ 72.163164] R13: 00007ffe53d876b0 R14: 00007ffe53d876b8 R15: 0000000001db1603 [ 72.163166] ---[ end trace 5078b35dfa1666e0 ]--- [ 72.413950] WARNING: CPU: 15 PID: 1886 at drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_mst_types.c:88 dm_dp_aux_transfer+0xa5/0xb0 [amdgpu] [ 72.413951] Modules linked in: nct6775 hwmon_vid jc42 amd64_edac_mod edac_mce_amd pci_stub vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) ipv6 cmac bnep nls_iso8859_1 nls_cp437 vfat fat fuse rc_pinnacle_pctv_hd em28xx_rc rc_core si2157 si2168 i2c_mux em28xx_dvb dvb_core btusb em28xx btrtl btbcm tveeprom btintel v4l2_common videodev bluetooth ecdh_generic rfkill amdkfd amd_iommu_v2 amdgpu snd_hda_codec_realtek chash i2c_dev snd_hda_codec_generic mxm_wmi wmi_bmof snd_hda_codec_hdmi gpu_sched kvm_amd ttm snd_hda_intel snd_hda_codec drm_kms_helper igb kvm snd_hda_core drm snd_hwdep ptp snd_pcm evdev psmouse irqbypass pps_core snd_timer agpgart crct10dif_pclmul crc32_pclmul fb_sys_fops crc32c_intel dca efi_pstore syscopyarea sysfillrect k10temp i2c_piix4 i2c_algo_bit serio_raw ghash_clmulni_intel snd [ 72.413980] sysimgblt efivars soundcore hwmon i2c_core ccp xhci_pci xhci_hcd wmi pcc_cpufreq button acpi_cpufreq loop dm_snapshot dm_bufio ext4 mbcache jbd2 [ 72.413989] CPU: 15 PID: 1886 Comm: xcmddc Tainted: G W O 4.18.9 #1 [ 72.413989] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./X370 Taichi, BIOS P4.70 04/17/2018 [ 72.414046] RIP: 0010:dm_dp_aux_transfer+0xa5/0xb0 [amdgpu] [ 72.414046] Code: be 01 00 00 00 48 8b bf 50 04 00 00 5b e9 a3 99 07 00 4c 8b 46 08 8b 0e 31 d2 31 f6 48 8b bf 50 04 00 00 e8 2d 9a 07 00 eb c6 <0f> 0b 48 c7 c0 f9 ff ff ff 5b c3 0f 1f 44 00 00 41 57 41 56 41 55 [ 72.414068] RSP: 0018:ffffbe2380d9bcc8 EFLAGS: 00010286 [ 72.414069] RAX: 0000000000000005 RBX: 0000000000000007 RCX: 0000000000000238 [ 72.414070] RDX: 0000000000000001 RSI: ffffbe2380d9bd48 RDI: ffff9756f60c78a0 [ 72.414071] RBP: ffff9756f60c78a0 R08: 00000000000240c0 R09: fffffffffffffffb [ 72.414072] R10: ffffe748dfe98f40 R11: ffffbe2380d9baa8 R12: ffffbe2380d9bd48 [ 72.414073] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffffc1285cd4 [ 72.414074] FS: 00007f2adf318bc0(0000) GS:ffff97571efc0000(0000) knlGS:0000000000000000 [ 72.414075] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.414076] CR2: 00007f2ae07d9ff0 CR3: 00000007e9802000 CR4: 00000000003406e0 [ 72.414076] Call Trace: [ 72.414084] drm_dp_i2c_do_msg+0x90/0x290 [drm_kms_helper] [ 72.414086] ? __switch_to_asm+0x34/0x70 [ 72.414093] drm_dp_i2c_xfer+0x155/0x250 [drm_kms_helper] [ 72.414097] __i2c_transfer+0x123/0x410 [i2c_core] [ 72.414100] ? __switch_to_asm+0x40/0x70 [ 72.414103] i2c_transfer+0x55/0xa0 [i2c_core] [ 72.414107] i2c_transfer_buffer_flags+0x4c/0x70 [i2c_core] [ 72.414109] i2cdev_read+0x5f/0xd0 [i2c_dev] [ 72.414112] __vfs_read+0x36/0x180 [ 72.414114] vfs_read+0x8a/0x140 [ 72.414116] ksys_read+0x4f/0xb0 [ 72.414118] do_syscall_64+0x55/0x100 [ 72.414121] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 72.414122] RIP: 0033:0x7f2ae08605e1 [ 72.414122] Code: fe ff ff 50 48 8d 3d 2e 27 0a 00 e8 49 21 02 00 66 0f 1f 84 00 00 00 00 00 48 8d 05 19 c1 0d 00 8b 00 85 c0 75 13 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 57 c3 66 0f 1f 44 00 00 41 54 49 89 d4 55 48 [ 72.414144] RSP: 002b:00007ffe53d875c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 72.414145] RAX: ffffffffffffffda RBX: 000000000000000c RCX: 00007f2ae08605e1 [ 72.414146] RDX: 0000000000000080 RSI: 0000000001db9e50 RDI: 000000000000000c [ 72.414147] RBP: 00007f2ae0cd1258 R08: 0000000001db9e50 R09: 0000000000000000 [ 72.414147] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe53d875d0 [ 72.414148] R13: 00007ffe53d876b0 R14: 00007ffe53d876b8 R15: 0000000001db1663 [ 72.414150] ---[ end trace 5078b35dfa1666e1 ]--- -- 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/470. |
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.
Created attachment 140936 [details] dmesg output I see the following warning during boot with Linux kernel 4.18.0-rc6 & 4.17.10: root@deepthought:~# dmesg | grep WARN [ 9.346100] WARNING: CPU: 11 PID: 1137 at drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_mst_types.c:88 dm_dp_aux_transfer+0xa5/0xc0 [amdgpu] [ 9.346162] WARNING: CPU: 14 PID: 1139 at drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_mst_types.c:88 dm_dp_aux_transfer+0xa5/0xc0 [amdgpu] Hardware is Ryzen 7 2700x, Sapphire Technology Radeon RX 480, IIyama ProLite XB2380HS connected via DVI. It looks like "dm_dp_aux_transfer" is used to setup DisplayPort, using "struct drm_dp_aux_msg — DisplayPort AUX channel transaction". Now, with my hardware I don't have any monitors connected via DisplayPort. Is that relevant? I patched in a "printk("msg->size = %d\n", msg->size);" and it displays the result twice, which is curious. # dmesg | grep -i "msg->size" [ 9.469511] msg->size = -5 [ 9.469803] msg->size = -5 Anyway, full "dmesg" attached.