Executing the IGT test igt@perf_pmu@cpu-hotplug[1] generated the following WARNING: [ 598.413957] WARNING: CPU: 0 PID: 0 at arch/x86/kernel/apic/apic.c:1457 setup_local_APIC+0x24b/0x3a0 [ 598.413978] Modules linked in: vgem btusb btrtl btbcm btintel bluetooth ecdh_generic snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel i915 r8169 mii snd_hda_intel snd_hda_codec snd_hwdep lpc_ich snd_hda_core snd_pcm prime_numbers pinctrl_cherryview [ 598.414311] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G U 4.17.0-rc4-gfe5bde58dca5-drmtip_38+ #1 [ 598.414324] Hardware name: /NUC5CPYB, BIOS PYBSWCEL.86A.0058.2016.1102.1842 11/02/2016 [ 598.414347] RIP: 0010:setup_local_APIC+0x24b/0x3a0 [ 598.414362] RSP: 0018:ffffffff9d203ee0 EFLAGS: 00010082 [ 598.414389] RAX: 000000e8e3ed84e8 RBX: 0000000000000020 RCX: 0000000061a80000 [ 598.414403] RDX: 000000e800000000 RSI: 0000000000000020 RDI: ffffffff9d203ef0 [ 598.414417] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001 [ 598.414431] R10: ffffffff9d203f38 R11: 0000000000000000 R12: 00000000000000f0 [ 598.414445] R13: 0000000000400000 R14: fffffffffffffc2c R15: 0000000000000000 [ 598.414462] FS: 0000000000000000(0000) GS:ffff95a47fc00000(0000) knlGS:0000000000000000 [ 598.414476] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 598.414491] CR2: 00007ffc4264a13c CR3: 000000005e210000 CR4: 00000000001006f0 [ 598.414503] Call Trace: [ 598.414569] apic_ap_setup+0x5/0x20 [ 598.414590] start_secondary+0x97/0x1e0 [ 598.414624] secondary_startup_64+0xa5/0xb0 [ 598.414711] Code: 74 30 8b 0d a8 63 30 01 85 c9 74 26 0f 31 c1 e1 0a 48 c1 e2 20 41 89 ce 4c 03 34 24 48 09 d0 49 29 c6 4d 85 f6 0f 8f 74 fe ff ff <0f> 0b e9 22 ff ff ff 49 83 ee 01 eb ea a9 00 00 01 00 8b 15 c1 [ 598.415442] irq event stamp: 2611506 [ 598.415463] hardirqs last enabled at (2611505): [<ffffffff9c0573bf>] switch_mm+0x2f/0x50 [ 598.415484] hardirqs last disabled at (2611506): [<ffffffff9c040784>] native_play_dead+0x14/0xf0 [ 598.415506] softirqs last enabled at (2611474): [<ffffffff9c08f648>] irq_enter+0x58/0x60 [ 598.415526] softirqs last disabled at (2611473): [<ffffffff9c08f62d>] irq_enter+0x3d/0x60 [ 598.415548] WARNING: CPU: 0 PID: 0 at arch/x86/kernel/apic/apic.c:1457 setup_local_APIC+0x24b/0x3a0 [ 598.415562] ---[ end trace 97371f221f38b55d ]--- Dmesg: https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_38/fi-bsw-n3050/dmesg19.log [1] https://cgit.freedesktop.org/drm/igt-gpu-tools/tree/tests/perf_pmu.c#n1037
This issue occurred only once and that was 4 months 3 weeks ago. I assume we can close this bug and can reopen if it appears again.
Bug Assessment: As per the CI bug log, this bug was not reproduced recently (for the past year ?) http://gfx-ci.fi.intel.com/cibuglog-ng/issue/460 Probably this bug can be closed ? It appears to me that I don't have access to resolve this bug as "not reproducible".