Oops#1 Part4 <7>[ 822.753804] i915 0000:03:00.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7d40023f) <7>[ 822.774927] i915 0000:03:00.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7d40023f) <7>[ 822.796097] i915 0000:03:00.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7d40023f) <7>[ 822.817222] i915 0000:03:00.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7d40023f) <7>[ 822.838339] i915 0000:03:00.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7d40023f) <7>[ 822.859463] i915 0000:03:00.0: [drm:intel_dp_aux_xfer [i915]] AUX B/DDI B/PHY B: timeout (status 0x7d40023f) <7>[ 822.859649] [drm:drm_dp_dpcd_access [drm_display_helper]] AUX B/DDI B/PHY B: Too many retries, giving up. First error: -110 <7>[ 822.860601] i915 0000:03:00.0: [drm:drm_sysfs_connector_remove] [CONNECTOR:521:DP-2] removing connector from sysfs <7>[ 822.860943] i915 0000:03:00.0: [drm:drm_sysfs_connector_remove] [CONNECTOR:530:HDMI-A-1] removing connector from sysfs <7>[ 822.918255] i915 0000:03:00.0: [drm:intel_power_well_disable [i915]] disabling AUX_B <7>[ 823.009451] [drm:drm_dp_dpcd_access [drm_display_helper]] AUX C/DDI C/PHY C: Too many retries, giving up. First error: -6 <7>[ 823.013203] i915 0000:03:00.0: [drm:drm_sysfs_connector_remove] [CONNECTOR:536:DP-3] removing connector from sysfs <7>[ 823.014719] i915 0000:03:00.0: [drm:drm_sysfs_connector_remove] [CONNECTOR:544:HDMI-A-2] removing connector from sysfs <7>[ 823.163068] [drm:drm_dp_dpcd_access [drm_display_helper]] AUX D/DDI D/PHY D: Too many retries, giving up. First error: -6 Oops#1 Part3 <7>[ 823.167260] i915 0000:03:00.0: [drm:drm_sysfs_connector_remove] [CONNECTOR:548:DP-4] removing connector from sysfs <7>[ 823.169569] i915 0000:03:00.0: [drm:drm_sysfs_connector_remove] [CONNECTOR:556:HDMI-A-3] removing connector from sysfs <1>[ 823.773389] BUG: kernel NULL pointer dereference, address: 0000000000000095 <1>[ 823.773398] #PF: supervisor read access in kernel mode <1>[ 823.773402] #PF: error_code(0x0000) - not-present page <6>[ 823.773406] PGD 0 P4D 0 <4>[ 823.773411] Oops: Oops: 0000 [#1] SMP NOPTI <4>[ 823.773416] CPU: 2 UID: 0 PID: 2837 Comm: perf_pmu Tainted: G S U L 7.0.0-Patchwork_164675v2-gb96553291acb+ #1 PREEMPT(lazy) <4>[ 823.773425] Tainted: [S]=CPU_OUT_OF_SPEC, [U]=USER, [L]=SOFTLOCKUP <4>[ 823.773429] Hardware name: Intel Corporation CoffeeLake Client Platform/CoffeeLake S UDIMM RVP, BIOS CNLSFWR1.R00.X220.B00.2103302221 03/30/2021 <4>[ 823.773436] RIP: 0010:_free_event+0x3e/0x370 <4>[ 823.773443] Code: 60 04 00 00 e8 53 58 f3 ff 48 8d bb 80 04 00 00 e8 47 58 f3 ff 48 83 bb 08 03 00 00 00 0f 84 e9 00 00 00 48 8b 83 98 00 00 00 80 95 00 00 00 08 74 0d f6 83 02 01 00 00 10 0f 84 a8 00 00 00 <4>[ 823.773452] RSP: 0018:ffffc9000120ba80 EFLAGS: 00010246 <4>[ 823.773458] RAX: 0000000000000000 RBX: ffff888110a797a8 RCX: 0000000000000001 <4>[ 823.773463] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 <4>[ 823.773468] RBP: ffffc9000120ba98 R08: 0000000000000000 R09: 0000000000000000 <4>[ 823.773472] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 <4>[ 823.773477] R13: ffff888110a797a8 R14: ffff888110a79aa0 R15: ffff888110a797a8 Oops#1 Part2 <4>[ 823.773481] FS: 0000000000000000(0000) GS:ffff8884d9797000(0000) knlGS:0000000000000000 <4>[ 823.773487] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 <4>[ 823.773492] CR2: 0000000000000095 CR3: 000000000344c001 CR4: 00000000003726f0 <4>[ 823.773497] Call Trace: <4>[ 823.773500] <4>[ 823.773503] perf_event_release_kernel+0x260/0x2d0 <4>[ 823.773510] perf_release+0x12/0x20 <4>[ 823.773514] __fput+0x10a/0x2f0 <4>[ 823.773520] ____fput+0x15/0x20 <4>[ 823.773524] task_work_run+0x60/0xb0 <4>[ 823.773529] do_exit+0x309/0xb80 <4>[ 823.773534] ? _raw_spin_unlock_irq+0x27/0x70 <4>[ 823.773540] ? trace_hardirqs_on+0x22/0x100 <4>[ 823.773547] do_group_exit+0x3a/0xb0 <4>[ 823.773551] __x64_sys_exit_group+0x18/0x20 <4>[ 823.773555] x64_sys_call+0x175a/0x26e0 <4>[ 823.773561] do_syscall_64+0xdd/0x1440 <4>[ 823.773566] ? lock_release+0xd0/0x2b0 <4>[ 823.773572] ? find_held_lock+0x31/0x90 <4>[ 823.773577] ? rcu_read_unlock+0x1c/0x80 <4>[ 823.773583] ? lock_release+0xd0/0x2b0 <4>[ 823.773589] ? __lock_acquire+0x43e/0x2790 <4>[ 823.773594] ? do_wp_page+0x904/0xef0 <4>[ 823.773601] ? find_held_lock+0x31/0x90 <4>[ 823.773605] ? rcu_read_unlock+0x1c/0x80 <4>[ 823.773610] ? lock_release+0xd0/0x2b0 <4>[ 823.773616] ? find_held_lock+0x31/0x90 <4>[ 823.773620] ? exc_page_fault+0x96/0x2c0 <4>[ 823.773626] ? lock_release+0xd0/0x2b0 <4>[ 823.773632] ? trace_hardirqs_on_prepare+0xe1/0x100 <4>[ 823.773638] ? irqentry_exit+0x17d/0x780 <4>[ 823.773644] ? clear_bhb_loop+0x30/0x80 <4>[ 823.773649] entry_SYSCALL_64_after_hwframe+0x76/0x7e <4>[ 823.773654] RIP: 0033:0x7f2781aee21d Oops#1 Part1 <4>[ 823.773658] Code: Unable to access opcode bytes at 0x7f2781aee1f3. <4>[ 823.773662] RSP: 002b:00007ffceeb974d8 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7 <4>[ 823.773669] RAX: ffffffffffffffda RBX: 00007f2781c04fa8 RCX: 00007f2781aee21d <4>[ 823.773673] RDX: 00000000000000e7 RSI: fffffffffffffed8 RDI: 0000000000000062 <4>[ 823.773678] RBP: 00007ffceeb97530 R08: 00007ffceeb97480 R09: 0000000000000007 <4>[ 823.773683] R10: 000056451c3e3df0 R11: 0000000000000202 R12: 0000000000000003 <4>[ 823.773687] R13: 0000000000000000 R14: 0000000000000062 R15: 00007f2781c04fc0 <4>[ 823.773696] <4>[ 823.773699] Modules linked in: vgem snd_hda_codec_intelhdmi snd_hda_codec_hdmi mei_gsc prime_numbers drm_buddy ttm drm_display_helper cec rc_core i2c_algo_bit kunit intel_rapl_msr intel_rapl_common intel_uncore_frequency intel_uncore_frequency_common intel_tcc_cooling x86_pkg_temp_thermal intel_powerclamp ee1004 coretemp cmdlinepart mei_hdcp spi_nor mtd mei_pxp ppdev kvm_intel wmi_bmof intel_wmi_thunderbolt kvm irqbypass ghash_clmulni_intel aesni_intel rapl i2c_i801 i2c_mux intel_cstate i2c_smbus spi_intel_pci e1000e video spi_intel mei_me mei snd_intel_dspcfg snd_hda_codec parport_pc parport snd_hda_core binfmt_misc snd_hwdep snd_pcm snd_timer intel_pmc_core pmt_telemetry snd pmt_discovery soundcore pmt_class pinctrl_cannonlake idma64 nls_iso8859_1 intel_pmc_ssram_telemetry wmi intel_vsec acpi_tad acpi_pad input_leds intel_pch_thermal serio_raw dm_multipath msr nvme_fabrics fuse efi_pstore nfnetlink autofs4 [last unloaded: i915] <4>[ 823.773792] CR2: 0000000000000095 <4>[ 823.773796] ---[ end trace 0000000000000000 ]---