* [Bug 107456] 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]
@ 2018-08-02 16:55 bugzilla-daemon
2018-09-25 11:27 ` bugzilla-daemon
2019-11-20 7:50 ` bugzilla-daemon
0 siblings, 2 replies; 3+ messages in thread
From: bugzilla-daemon @ 2018-08-02 16:55 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=107456
Bug ID: 107456
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
Version: unspecified
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: DRM/AMDgpu
Assignee: dri-devel@lists.freedesktop.org
Reporter: marc@dragonfly.plus.com
Created attachment 140936
--> https://bugs.freedesktop.org/attachment.cgi?id=140936&action=edit
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.
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^ permalink raw reply [flat|nested] 3+ messages in thread* [Bug 107456] 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]
2018-08-02 16:55 [Bug 107456] 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] bugzilla-daemon
@ 2018-09-25 11:27 ` bugzilla-daemon
2019-11-20 7:50 ` bugzilla-daemon
1 sibling, 0 replies; 3+ messages in thread
From: bugzilla-daemon @ 2018-09-25 11:27 UTC (permalink / raw)
To: dri-devel
[-- Attachment #1.1: Type: text/plain, Size: 8106 bytes --]
https://bugs.freedesktop.org/show_bug.cgi?id=107456
--- Comment #1 from Marc Thomas <marc@dragonfly.plus.com> ---
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 ]---
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^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug 107456] 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]
2018-08-02 16:55 [Bug 107456] 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] bugzilla-daemon
2018-09-25 11:27 ` bugzilla-daemon
@ 2019-11-20 7:50 ` bugzilla-daemon
1 sibling, 0 replies; 3+ messages in thread
From: bugzilla-daemon @ 2019-11-20 7:50 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=107456
Martin Peres <martin.peres@free.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |MOVED
--- Comment #2 from Martin Peres <martin.peres@free.fr> ---
-- GitLab Migration Automatic Message --
This bug has been migrated to freedesktop.org's GitLab instance and has been
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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.
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