[Bug 103738] [IGT] igt at gem_exec/igt at gem_reloc/igt at sync some subtests has a dmesg-warn watchdog: BUG: soft lockup - CPU#1 stuck for 23s!

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103738

--- Comment #24 from Hector Velazquez <hector.franciscox.velazquez.suriano at intel.com> ---
This tests has a dmesg-warn on CNL QA 
Tests List:
igt at gem_exec_reloc@cpu-30
igt at gem_exec_reloc@cpu-31
igt at gem_exec_reloc@readonly-30
igt at gem_exec_reloc@readonly-31

dmesg-warn sample:
. . .
[  892.043983] watchdog: BUG: soft lockup - CPU#0 stuck for 22s!
[gem_exec_reloc:22440]
[  892.043990] Modules linked in: snd_hda_codec_hdmi cmac bnep 8250_dw
nls_iso8859_1 snd_soc_skl snd_soc_skl_ipc snd_soc_sst_ipc arc4 snd_soc_sst_dsp
snd_hda_ext_core snd_soc_acpi snd_hda_codec_realtek snd_hda_codec_generic
snd_soc_core snd_compress snd_pcm_dmaengine ac97_bus iwlmvm mac80211
snd_hda_intel x86_pkg_temp_thermal snd_hda_codec intel_powerclamp coretemp
snd_hda_core snd_hwdep snd_pcm kvm_intel kvm irqbypass crct10dif_pclmul
crc32_pclmul ghash_clmulni_intel snd_seq_midi snd_seq_midi_event pcbc
snd_rawmidi aesni_intel aes_x86_64 crypto_simd glue_helper snd_seq cryptd
input_leds serio_raw snd_seq_device iwlwifi btusb btrtl btbcm snd_timer
wmi_bmof btintel asix bluetooth usbnet mii shpchp idma64 snd virt_dma
ecdh_generic soundcore cfg80211 intel_lpss_pci mei_me intel_lpss mei
intel_pch_thermal
[  892.044025]  acpi_pad mac_hid parport_pc ppdev lp parport ip_tables x_tables
autofs4 hid_generic usbhid hid i915 e1000e prime_numbers wmi video
[  892.044034] CPU: 0 PID: 22440 Comm: gem_exec_reloc Tainted: G     U       L 
 4.16.0-rc3-drm-intel-qa-ww9-commit-b2e10fd+ #1
[  892.044035] Hardware name: Intel Corporation CannonLake Client
Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X124.B02.1802051422
02/05/2018
[  892.044065] RIP: 0010:i915_exit+0x44/0x118 [i915]
[  892.044066] RSP: 0018:ffffaad0422778d0 EFLAGS: 00050246 ORIG_RAX:
ffffffffffffff12
[  892.044068] RAX: 0000000000000000 RBX: ffffaad042277b58 RCX:
0000000000000000
[  892.044069] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000000000ff8
[  892.044069] RBP: ffff9e501c291500 R08: 0000000000000400 R09:
0000000001e23ff0
[  892.044070] R10: ffff9e501c291500 R11: 0000000000000001 R12:
00007f0718023010
[  892.044071] R13: 00007f0718022e10 R14: ffffaad0422778e0 R15:
ffff9e4fc24c8000
[  892.044072] FS:  00007f075ef6d8c0(0000) GS:ffff9e502f800000(0000)
knlGS:0000000000000000
[  892.044073] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  892.044074] CR2: 00007f0718022e10 CR3: 0000000208252006 CR4:
0000000000760ef0
[  892.044075] PKRU: 55555554
[  892.044075] Call Trace:
[  892.044099]  i915_gem_do_execbuffer+0x598/0x1060 [i915]
[  892.044104]  ? shmem_getpage_gfp+0x79f/0xcf0
[  892.044107]  ? is_bpf_text_address+0xa/0x20
[  892.044109]  ? __save_stack_trace+0x92/0x100
[  892.044112]  ? create_object+0x24e/0x300
[  892.044132]  i915_gem_execbuffer2_ioctl+0xee/0x360 [i915]
[  892.044150]  ? i915_gem_execbuffer_ioctl+0x2d0/0x2d0 [i915]
[  892.044153]  drm_ioctl_kernel+0x67/0xb0
[  892.044156]  drm_ioctl+0x2f4/0x3f0
[  892.044173]  ? i915_gem_execbuffer_ioctl+0x2d0/0x2d0 [i915]
[  892.044176]  ? vma_merge+0xc8/0x330
[  892.044179]  do_vfs_ioctl+0xa2/0x610
[  892.044181]  SyS_ioctl+0x74/0x80
[  892.044184]  do_syscall_64+0x6e/0x120
[  892.044187]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[  892.044189] RIP: 0033:0x7f075d14def7
[  892.044190] RSP: 002b:00007fffc117d6f8 EFLAGS: 00000246 ORIG_RAX:
0000000000000010
[  892.044191] RAX: ffffffffffffffda RBX: 0000000000000003 RCX:
00007f075d14def7
[  892.044192] RDX: 00007fffc117d7b0 RSI: 0000000040406469 RDI:
0000000000000003
[  892.044193] RBP: 00007fffc117d7b0 R08: ffffffffffffffff R09:
0000000000000000
[  892.044193] R10: 000000000000049e R11: 0000000000000246 R12:
0000000040406469
[  892.044194] R13: 0000000000000003 R14: 00007fffc117d7b0 R15:
0000000004000000
[  892.044195] Code: ff ff ff e9 e6 0b f1 ff b9 f2 ff ff ff e9 ee 0b f1 ff b8
f2 ff ff ff 40 30 f6 e9 94 33 f2 ff b8 f2 ff ff ff 30 d2 e9 9c 33 f2 ff <ba> f2
ff ff ff e9 2c 4e f2 ff b8 f2 ff ff ff e9 dd 52 f2 ff b8
. . .

software:
IGT-Version: 1.21-gbddfb8d (x86_64) (Linux:
4.16.0-rc3-drm-intel-qa-ww9-commit-b2e10fd+ x86_64)

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