[Bug 103438] New: [IGT] drv_selftest/mock_evict/live_uncore watchdog bug soft lockup

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103438

            Bug ID: 103438
           Summary: [IGT] drv_selftest/mock_evict/live_uncore watchdog bug
                    soft lockup
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: elizabethx.de.la.torre.mena at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 135023
  --> https://bugs.freedesktop.org/attachment.cgi?id=135023&action=edit
dmesg_mock_evict

We are hitting same problem as described in bug 102973 with latest kernel:

$uname -a
Linux SKL-5-NUC6i7KYB 4.14.0-rc6-drm-intel-qa-ww43-commit-5c82a37+ #1 SMP Tue
Oct 24 07:34:21 CDT 2017 x86_64 x86_64 x86_64 GNU/Linux

With drv_selftest at mock_evict and drv_selftest at live_uncore.

[  345.788900] [IGT] drv_selftest: starting subtest mock_evict
[  345.833104] Setting dangerous option enable_guc_submission - tainting kernel
[  345.833106] Setting dangerous option enable_guc_loading - tainting kernel
[  345.833107] Setting dangerous option alpha_support - tainting kernel
[  345.833110] Setting dangerous option mock_selftests - tainting kernel
[  345.833334] i915: Performing mock selftests with st_random_seed=0xf07c3152
st_timeout=1000
[  372.248023] watchdog: BUG: soft lockup - CPU#2 stuck for 22s!
[drv_selftest:1470]
[  372.248027] Modules linked in: i915(+) drm_kms_helper drm ip6table_filter
ip6_tables cmac iptable_filter bnep arc4 snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec snd_hda_core
snd_hwdep snd_pcm intel_rapl snd_seq_midi snd_seq_midi_event
x86_pkg_temp_thermal intel_powerclamp snd_rawmidi coretemp kvm_intel
binfmt_misc iwlmvm kvm mac80211 irqbypass crct10dif_pclmul crc32_pclmul
ghash_clmulni_intel pcbc snd_seq nls_iso8859_1 snd_seq_device ir_rc6_decoder
snd_timer iwlwifi aesni_intel aes_x86_64 crypto_simd glue_helper cryptd
intel_cstate intel_rapl_perf cfg80211 btusb btrtl hci_uart btbcm snd btqca
btintel mei_me input_leds soundcore mei shpchp intel_pch_thermal rc_rc6_mce
bluetooth ir_lirc_codec lirc_dev nuvoton_cir rc_core ecdh_generic
intel_lpss_acpi intel_lpss acpi_als
[  372.248080]  acpi_pad kfifo_buf mac_hid industrialio parport_pc ppdev lp
parport ip_tables x_tables autofs4 hid_generic usbhid i2c_algo_bit
prime_numbers syscopyarea e1000e sysfillrect sysimgblt fb_sys_fops nvme ptp
nvme_core pps_core sdhci_pci sdhci wmi i2c_hid video pinctrl_sunrisepoint hid
pinctrl_intel [last unloaded: i915]
[  372.248113] CPU: 2 PID: 1470 Comm: drv_selftest Tainted: G     U         
4.14.0-rc6-drm-intel-qa-ww43-commit-5c82a37+ #1
[  372.248113] Hardware name:                  /NUC6i7KYB, BIOS
KYSKLi70.86A.0050.2017.0831.1924 08/31/2017
[  372.248114] task: ffff980798798f80 task.stack: ffffb6ae44228000
[  372.248144] RIP: 0010:i915_gem_evict_something+0x149/0x470 [i915]
[  372.248145] RSP: 0018:ffffb6ae4422bac8 EFLAGS: 00000206 ORIG_RAX:
ffffffffffffff10
[  372.248146] RAX: ffff980768e0f630 RBX: 00000000000003c1 RCX:
ffffb6ae4422baf0
[  372.248146] RDX: 0000000000000000 RSI: 0000000000000003 RDI:
0000000000000000
[  372.248146] RBP: ffffb6ae4422bb98 R08: 0000000000000000 R09:
ffff98077304dfe0
[  372.248147] R10: ffffffffffffffff R11: 0000000000fff000 R12:
ffffb6ae4422baf0
[  372.248147] R13: 0000000000000000 R14: ffff980768e0f440 R15:
ffff98077304c520
[  372.248148] FS:  00007fe951dfb880(0000) GS:ffff9807be880000(0000)
knlGS:0000000000000000
[  372.248148] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  372.248149] CR2: 00007fc56c9da000 CR3: 0000000858547004 CR4:
00000000003606e0
[  372.248150] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[  372.248150] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[  372.248150] Call Trace:
[  372.248176]  ? checked_vma_instance+0x120/0x140 [i915]
[  372.248197]  igt_evict_something+0x56/0xd0 [i915]
[  372.248222]  __i915_subtests+0x47/0xd0 [i915]
[  372.248242]  i915_gem_evict_mock_selftests+0x42/0x70 [i915]
[  372.248266]  __run_selftests+0x155/0x1e0 [i915]
[  372.248267]  ? 0xffffffffc054a000
[  372.248288]  i915_mock_selftests+0x30/0x60 [i915]
[  372.248307]  i915_init+0xa/0x6e [i915]
[  372.248309]  do_one_initcall+0x53/0x190
[  372.248311]  ? __vunmap+0x81/0xb0
[  372.248312]  ? kmem_cache_alloc_trace+0xe7/0x1d0
[  372.248314]  do_init_module+0x5f/0x209
[  372.248314]  load_module+0x2735/0x2c80
[  372.248317]  ? ima_post_read_file+0x7d/0xa0
[  372.248318]  SYSC_finit_module+0xe5/0x120
[  372.248319]  ? SYSC_finit_module+0xe5/0x120
[  372.248320]  SyS_finit_module+0xe/0x10
[  372.248322]  entry_SYSCALL_64_fastpath+0x1e/0xa9
[  372.248322] RIP: 0033:0x7fe95030fd29
[  372.248323] RSP: 002b:00007ffcb04be638 EFLAGS: 00000246 ORIG_RAX:
0000000000000139
[  372.248324] RAX: ffffffffffffffda RBX: 0000000000000012 RCX:
00007fe95030fd29
[  372.248324] RDX: 0000000000000000 RSI: 0000000001a00670 RDI:
0000000000000012
[  372.248325] RBP: 00007ffcb04bd640 R08: 0000000000000000 R09:
000000000000003c
[  372.248325] R10: 0000000000000012 R11: 0000000000000246 R12:
0000000001a01a20
[  372.248326] R13: 00007ffcb04bd620 R14: 0000000000000005 R15:
0000000000000000
[  372.248326] Code: 8d b0 10 fe ff ff 75 1c e9 47 01 00 00 49 8b 86 f0 01 00
00 49 39 c7 4c 8d b0 10 fe ff ff 0f 84 30 01 00 00 41 8b 9e f8 00 00 00 <83> e3
0f 75 dd 45 85 ed 74 0c 49 8b 86 f8 00 00 00 f6 c4 08 75

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