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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [guc] kms_flip/gem_exec_suspend some subtests has a dmesg-fail [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to capture logs"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104500#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [guc] kms_flip/gem_exec_suspend some subtests has a dmesg-fail [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to capture logs"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104500">bug 104500</a>
from <span class="vcard"><a class="email" href="mailto:ricardo.o.perez@intel.com" title="Ricardo Perez <ricardo.o.perez@intel.com>"> <span class="fn">Ricardo Perez</span></a>
</span></b>
<pre>The GuC failure is seen while running igt@gem_exec_reloc@readonly-32 test on
CFL QA systems.
Using:
IGT-Version: 1.21-g37bd27f (x86_64) (Linux:
4.15.0-rc9-drm-intel-qa-ww4-commit-59275f1+ x86_64)
------------------------------------------------------------------------------
[ 162.300900] Setting dangerous option reset - tainting kernel
[ 188.047996] watchdog: BUG: soft lockup - CPU#8 stuck for 23s!
[gem_exec_reloc:15704]
[ 188.048001] Modules linked in: vgem asix usbnet mii ip6table_filter
ip6_tables cmac iptable_filter bnep binfmt_misc nls_iso8859_1
snd_hda_codec_hdmi 8250_dw snd_hda_codec_realtek snd_hda_codec_generic
intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp snd_hda_intel
kvm_intel snd_hda_codec kvm snd_hda_core snd_hwdep irqbypass snd_pcm
snd_seq_midi crct10dif_pclmul crc32_pclmul snd_seq_midi_event
ghash_clmulni_intel snd_rawmidi pcbc aesni_intel snd_seq aes_x86_64 crypto_simd
btusb glue_helper btrtl cryptd intel_cstate snd_seq_device btbcm snd_timer
btintel intel_rapl_perf iwlwifi snd bluetooth idma64 ecdh_generic virt_dma
input_leds soundcore cfg80211 intel_lpss_pci serio_raw intel_pch_thermal
intel_lpss wmi_bmof mac_hid acpi_pad parport_pc ppdev lp parport ip_tables
x_tables autofs4 hid_generic
[ 188.048052] usbhid hid i915 e1000e ahci ptp libahci pps_core wmi video
[ 188.048056] CPU: 8 PID: 15704 Comm: gem_exec_reloc Tainted: G U
4.15.0-rc9-drm-intel-qa-ww4-commit-59275f1+ #1
[ 188.048056] Hardware name: Intel Corporation CoffeeLake Client
Platform/CoffeeLake S UDIMM RVP, BIOS CNLSFWR1.R00.X118.B07.1801040709
01/04/2018
[ 188.048088] RIP: 0010:eb_relocate_entry+0x1a7/0xbc0 [i915]
[ 188.048089] RSP: 0018:ffff9cd1487af858 EFLAGS: 00000282 ORIG_RAX:
ffffffffffffff11
[ 188.048090] RAX: ffff8d7910ed4c40 RBX: ffff8d790c48f180 RCX:
ffff8d791557df10
[ 188.048090] RDX: ffff8d7913d73004 RSI: 0000000000000001 RDI:
0000000000000ff8
[ 188.048090] RBP: ffff8d7913d73004 R08: 0000000000000400 R09:
0000000005295a99
[ 188.048091] R10: ffff8d790c48f180 R11: 0000000000000001 R12:
ffff9cd1487afb70
[ 188.048091] R13: 0000000000000400 R14: ffff8d790c48f180 R15:
0000000005295a99
[ 188.048092] FS: 00007fec00aa5880(0000) GS:ffff8d791d000000(0000)
knlGS:0000000000000000
[ 188.048092] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 188.048092] CR2: 00007feba3171310 CR3: 0000000455168005 CR4:
00000000003606e0
[ 188.048093] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 188.048093] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 188.048093] Call Trace:
[ 188.048106] eb_relocate_vma+0x123/0x1c0 [i915]
[ 188.048117] i915_gem_do_execbuffer+0x599/0x1060 [i915]
[ 188.048119] ? shmem_getpage_gfp+0x79a/0xcb0
[ 188.048121] ? is_bpf_text_address+0xa/0x20
[ 188.048122] ? __save_stack_trace+0x92/0x100
[ 188.048124] ? create_object+0x24e/0x300
[ 188.048133] i915_gem_execbuffer2+0xee/0x360 [i915]
[ 188.048142] ? i915_gem_execbuffer+0x2d0/0x2d0 [i915]
[ 188.048143] drm_ioctl_kernel+0x65/0xb0
[ 188.048145] drm_ioctl+0x2e5/0x3e0
[ 188.048153] ? i915_gem_execbuffer+0x2d0/0x2d0 [i915]
[ 188.048155] do_vfs_ioctl+0x9f/0x5f0
[ 188.048156] SyS_ioctl+0x74/0x80
[ 188.048158] entry_SYSCALL_64_fastpath+0x24/0x87
[ 188.048159] RIP: 0033:0x7febfefb74b7
[ 188.048160] RSP: 002b:00007ffda1b8c428 EFLAGS: 00000246
[ 188.048160] Code: 49 c1 f9 10 48 85 ed 4d 89 cf 0f 84 a7 02 00 00 65 48 8b
04 25 c0 5b 01 00 48 89 ea 48 89 44 24 18 48 89 44 24 28 48 89 44 24 08 <48> 89
44 24 10 44 89 dd 48 89 1c 24 4d 89 f2 4d 89 ee 49 c1 ee
[ 201.962945] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 201.962963] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 201.963016] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 201.963050] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 201.963088] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 201.963122] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 201.963157] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 201.963201] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 201.963234] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 201.963268] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 206.964091] guc_read_update_log_buffer: 133261 callbacks suppressed
[ 206.964092] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 206.964184] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 206.964257] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 206.964330] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 206.964403] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 206.964476] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 206.964549] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 206.964622] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 206.964695] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 206.964768] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 211.969687] guc_read_update_log_buffer: 132952 callbacks suppressed
[ 211.969688] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 211.969711] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 211.969739] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 211.969761] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 211.969790] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 211.969818] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 211.969840] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 211.969869] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 211.969897] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 211.969920] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 216.972093] guc_read_update_log_buffer: 134285 callbacks suppressed
[ 216.972094] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 216.972165] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 216.972238] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 216.972311] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 216.972384] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 216.972456] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 216.972529] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 216.972602] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 216.972674] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 216.972746] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 221.976035] guc_read_update_log_buffer: 134692 callbacks suppressed
[ 221.976036] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 221.976139] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 221.976210] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 221.976281] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 221.976352] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 221.976423] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 221.976494] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 221.976564] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 221.976635] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 221.976706] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 226.980046] guc_read_update_log_buffer: 133719 callbacks suppressed
[ 226.980048] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 226.980086] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 226.980108] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 226.980185] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 226.980225] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 226.980248] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 226.980306] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 226.980334] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 226.980356] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 226.980410] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 231.984023] guc_read_update_log_buffer: 132530 callbacks suppressed
[ 231.984024] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 231.984118] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 231.984188] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 231.984259] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 231.984330] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 231.984402] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 231.984473] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 231.986499] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 231.986516] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 231.986544] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 236.988004] guc_read_update_log_buffer: 143857 callbacks suppressed
[ 236.988005] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 236.988028] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 236.988037] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 236.988055] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 236.988077] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 236.988099] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 236.988109] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 236.988126] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 236.988149] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 236.988171] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 241.992015] guc_read_update_log_buffer: 146436 callbacks suppressed
[ 241.992016] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 241.992064] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 241.992073] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 241.992090] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 241.992113] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 241.992133] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 241.992142] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 241.992159] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 241.992182] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 241.992201] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 246.996004] guc_read_update_log_buffer: 141356 callbacks suppressed
[ 246.996005] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 246.996041] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 246.996065] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 246.996089] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 246.996117] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 246.996132] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 246.996171] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 246.996197] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 246.996225] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs
[ 246.996241] [drm:guc_read_update_log_buffer] *ERROR* no sub-buffer to
capture logs</pre>
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