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<pre>Hello, mainteners,
[1.] One line summary of the problem:
A huge warning in dmesg pointing to drivers/gpu/drm/i915/display/intel_tc.c
[2.] Full description of the problem/report:
I can't identify any factual problems beyond a warning in dmesg triggered at every boot, i.e., I have seen no features affected. The dmesg output is located in the log files in the attachment.
I am facing this warning in LENOVO 82MG/LNVNB161216, BIOS H4CN35WW(V2.04) 04/12/2024 (Lenovo Ganing 3i). I have tried two new kernel versions from <a class="moz-txt-link-abbreviated" href="http://www.kernel.org">www.kernel.org</a> site, the Kernel 6.10.5 and 6.1.105.
Additionally, I have used Debian at least since kernel version 6.1.22. All kernels present warnings in the same file with slightly different outputs in dmesg. I am compiling the kernel with the config-6.1.105 file in the attachment.
[3.] Keywords (i.e., modules, networking, kernel):
Modules
[4.] Kernel information:
The issue is present in Kernel 6.10.5 and 6.1.105, but the warning might be present since 6.1.22.
[4.1.] Kernel version (from /proc/version):
Linux version 6.10.5 (renan@debian) (gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40) #1 SMP PREEMPT_DYNAMIC Thu Aug 15 01:06:09 -03 2024
[4.2.] Kernel .config file:
In the config-6.1.105 file in the attachment
[5.] Most recent kernel version which did not have the bug:
This computer is "new". I bought it two months ago, and I have not seem this warning not occuring.
[6.] Output of Oops.. message (if applicable) with symbolic information
resolved (see Documentation/admin-guide/bug-hunting.rst) :
[ 2.237704] ------------[ cut here ]------------
[ 2.237706] i915 0000:00:02.0: drm_WARN_ON(val == 0xffffffff)
[ 2.237721] WARNING: CPU: 7 PID: 217 at drivers/gpu/drm/i915/display/intel_tc.c:737 tgl_tc_phy_init+0x103/0x130 [i915]
[ 2.237969] Modules linked in: i915(+) joydev hid_generic usbhid hid nvme nvme_core t10_pi crc64_rocksoft crc64 crc_t10dif crct10dif_generic i2c_algo_bit cec rc_core drm_buddy ttm drm_display_helper xhci_pci xhci_hcd drm_kms_helper crct10dif_pclmul usbcore evdev crct10dif_common crc32c_intel serio_raw drm usb_common vmd video wmi fan
[ 2.238002] CPU: 7 PID: 217 Comm: (udev-worker) Tainted: G W 6.10.5 #1
[ 2.238007] Hardware name: LENOVO 82MG/LNVNB161216, BIOS H4CN35WW(V2.04) 04/12/2024
[ 2.238010] RIP: 0010:tgl_tc_phy_init+0x103/0x130 [i915]
[ 2.238241] Code: 48 8b 6f 50 48 85 ed 75 03 48 8b 2f e8 76 62 ac d8 48 c7 c1 e8 94 c5 c0 48 89 ea 48 c7 c7 62 a7 c7 c0 48 89 c6 e8 bd a0 2e d8 <0f> 0b 48 8b 3b e8 e3 7d f9 ff 89 c1 89 c5 c1 e9 1f c1 ed 1f 8d 14
[ 2.238248] RSP: 0018:ffffb95e40a53608 EFLAGS: 00010286
[ 2.238252] RAX: 0000000000000000 RBX: ffff8e8f919e7000 RCX: c0000000fffdffff
[ 2.238256] RDX: 0000000000000000 RSI: 00000000fffdffff RDI: 0000000000000001
[ 2.238259] RBP: ffff8e8f81bf6d30 R08: 0000000000000000 R09: 0000000000000003
[ 2.238262] R10: ffffb95e40a53498 R11: ffff8e952f7fffe8 R12: ffff8e8f813ec000
[ 2.238266] R13: ffff8e8f813ec618 R14: 000fffffffe00000 R15: ffff8e8f813ec000
[ 2.238269] FS: 00007f4ce50158c0(0000) GS:ffff8e952e780000(0000) knlGS:0000000000000000
[ 2.238274] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2.238278] CR2: 000055b901674008 CR3: 0000000102c70004 CR4: 0000000000770ef0
[ 2.238281] PKRU: 55555554
[ 2.238284] Call Trace:
[ 2.238286] <TASK>
[ 2.238289] ? __warn+0x7c/0x120
[ 2.238295] ? tgl_tc_phy_init+0x103/0x130 [i915]
[ 2.238520] ? report_bug+0x160/0x190
[ 2.238527] ? prb_read_valid+0x17/0x20
[ 2.238532] ? handle_bug+0x41/0x70
[ 2.238538] ? exc_invalid_op+0x13/0x60
[ 2.238543] ? asm_exc_invalid_op+0x16/0x20
[ 2.238551] ? tgl_tc_phy_init+0x103/0x130 [i915]
[ 2.238777] ? tgl_tc_phy_init+0x103/0x130 [i915]
[ 2.238991] intel_tc_port_init+0x17e/0x220 [i915]
[ 2.239208] intel_ddi_init+0x9fa/0x11d0 [i915]
[ 2.239435] ? __pfx_intel_ddi_init+0x10/0x10 [i915]
[ 2.239657] intel_bios_for_each_encoder+0x31/0x50 [i915]
[ 2.239929] intel_setup_outputs+0x4e0/0xc20 [i915]
[ 2.240194] intel_display_driver_probe_nogem+0x139/0x220 [i915]
[ 2.240453] i915_driver_probe+0x63b/0xba0 [i915]
[ 2.240654] local_pci_probe+0x3e/0x90
[ 2.240661] pci_device_probe+0xc3/0x240
[ 2.240667] really_probe+0xd3/0x380
[ 2.240673] ? __pfx___driver_attach+0x10/0x10
[ 2.240678] __driver_probe_device+0x78/0x150
[ 2.240684] driver_probe_device+0x1f/0x90
[ 2.240689] __driver_attach+0xce/0x1c0
[ 2.240694] bus_for_each_dev+0x81/0xd0
[ 2.240699] bus_add_driver+0x10e/0x240
[ 2.240704] driver_register+0x55/0x100
[ 2.240710] i915_init+0x1e/0xc0 [i915]
[ 2.240904] ? __pfx_i915_init+0x10/0x10 [i915]
[ 2.241092] do_one_initcall+0x54/0x320
[ 2.241099] do_init_module+0x60/0x240
[ 2.241103] init_module_from_file+0x86/0xc0
[ 2.241108] idempotent_init_module+0x120/0x310
[ 2.241113] __x64_sys_finit_module+0x5a/0xb0
[ 2.241117] do_syscall_64+0x7e/0x190
[ 2.241121] ? vm_mmap_pgoff+0x12d/0x1c0
[ 2.241128] ? ksys_mmap_pgoff+0x153/0x1f0
[ 2.241135] ? syscall_exit_to_user_mode+0x73/0x200
[ 2.241140] ? do_syscall_64+0x8a/0x190
[ 2.241145] ? syscall_exit_to_user_mode+0x73/0x200
[ 2.241150] ? do_syscall_64+0x8a/0x190
[ 2.241156] ? vfs_read+0x292/0x370
[ 2.241162] ? syscall_exit_to_user_mode+0x73/0x200
[ 2.241167] ? do_syscall_64+0x8a/0x190
[ 2.241172] ? syscall_exit_to_user_mode+0x73/0x200
[ 2.241177] ? do_syscall_64+0x8a/0x190
[ 2.241181] ? do_syscall_64+0x8a/0x190
[ 2.241185] ? clear_bhb_loop+0x45/0xa0
[ 2.241189] ? clear_bhb_loop+0x45/0xa0
[ 2.241192] ? clear_bhb_loop+0x45/0xa0
[ 2.241195] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 2.241202] RIP: 0033:0x7f4ce5723719
[ 2.241205] Code: 08 89 e8 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d b7 06 0d 00 f7 d8 64 89 01 48
[ 2.241212] RSP: 002b:00007ffe5dcb5ed8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[ 2.241217] RAX: ffffffffffffffda RBX: 000055df22026c20 RCX: 00007f4ce5723719
[ 2.241221] RDX: 0000000000000000 RSI: 00007f4ce58b6efd RDI: 0000000000000013
[ 2.241224] RBP: 00007f4ce58b6efd R08: 0000000000000000 R09: 000000000000000a
[ 2.241228] R10: 0000000000000013 R11: 0000000000000246 R12: 0000000000020000
[ 2.241231] R13: 0000000000000000 R14: 000055df22023820 R15: 000000000000000a
[ 2.241236] </TASK>
[ 2.241238] ---[ end trace 0000000000000000 ]---
[7.] A small shell script or example program which triggers the
problem (if possible)
Not possible
[8.] Environment
[8.1.] Software (add the output of the ver_linux script here)
[8.2.] Processor information (from /proc/cpuinfo):
In file cpuinfo.log in the attachments
[8.3.] Module information (from /proc/modules):
In file modules.log in the attachments
[8.4.] Loaded driver and hardware information (/proc/ioports, /proc/iomem)
In files ioports.log and iomen.log in the attachments
[8.5.] PCI information ('lspci -vvv' as root):
In file "sudo lspci -vvv".log in the attachments
[8.6.] SCSI information (from /proc/scsi/scsi):
File does not exist
[8.7.] Other information that might be relevant to the problem
(please look in /proc and include all information that you
think to be relevant):
Not applicable
[X.] Other notes, patches, fixes, workarounds:
No known workarounds in the web was found</pre>
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