BORE: rq->clock_update_flags < RQCF_ACT_SKIP - BORE 5.7.3

[ionutnechita]

Kernel: 6.12.0-rc7
BORE: 5.7.3

[  906.235863] ------------[ cut here ]------------
[  906.235867] rq->clock_update_flags < RQCF_ACT_SKIP
[  906.235871] WARNING: CPU: 0 PID: 16856 at kernel/sched/sched.h:1649 update_curr_se+0xa0/0xb0
[  906.235880] Modules linked in: qrtr snd_seq_dummy snd_hrtimer snd_seq snd_seq_device input_leds mousedev xt_statistic nfnetlink_queue nft_queue nft_ct xt_nfacct ipt_REJECT nf_reject_ipv4 nfnetlink_acct xt_multiport xt_mark xt_comment xt_tcpudp xt_conntrack nft_chain_nat xt_MASQUERADE nf_conntrack_netlink xfrm_user xfrm_algo xt_addrtype nft_compat nf_tables overlay af_packet snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_scodec_component hid_sensor_accel_3d hid_sensor_gyro_3d hid_sensor_trigger industrialio_triggered_buffer kfifo_buf hid_sensor_iio_common industrialio hid_sensor_custom uvcvideo hid_sensor_hub videobuf2_vmalloc uvc snd_sof_pci_intel_skl snd_sof_intel_hda_generic soundwire_intel soundwire_cadence snd_sof_intel_hda_common snd_soc_hdac_hda snd_sof_intel_hda_mlink snd_sof_intel_hda snd_sof_pci snd_sof_xtensa_dsp iwlmvm snd_sof mac80211 snd_sof_utils snd_soc_acpi_intel_match soundwire_generic_allocation intel_rapl_msr snd_soc_acpi intel_rapl_common soundwire_bus intel_uncore_frequency
[  906.235940]  intel_uncore_frequency_common intel_tcc_cooling led_class x86_pkg_temp_thermal libarc4 intel_powerclamp f2fs snd_soc_avs iwlwifi coretemp crct10dif_pclmul polyval_clmulni polyval_generic ghash_clmulni_intel sha512_ssse3 sha256_ssse3 snd_soc_hda_codec nls_iso8859_1 sha1_ssse3 nls_cp437 aesni_intel snd_hda_ext_core crc32_generic gf128mul crc32_pclmul vfat lz4hc_compress crypto_simd lz4_compress fat cryptd cfg80211 snd_soc_core iTCO_wdt rapl intel_pmc_bxt intel_cstate evdev mei_hdcp mei_pxp watchdog ee1004 wmi_bmof intel_wmi_thunderbolt mac_hid intel_uncore rfkill snd_compress intel_xhci_usb_role_switch sch_fq_codel roles ac97_bus i915 snd_pcm_dmaengine msr uinput thermal atkbd snd_hda_intel libps2 serio vivaldi_fmap snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec snd_hda_core loop e1000e snd_hwdep xt_nat snd_pcm mei_me nf_nat drm_buddy nf_conntrack drm_display_helper snd_timer ptp i2c_i801 nf_defrag_ipv6 intel_gtt intel_pmc_core i2c_algo_bit snd mei i2c_mux video nf_defrag_ipv4 intel_pch_thermal soundcore
[  906.236011]  tpm_crb intel_vsec br_netfilter backlight i2c_smbus pps_core veth pmt_telemetry tun pmt_class tap tpm_tis wmi macvlan tpm_tis_core tiny_power_button acpi_pad bridge button stp llc vboxnetflt(O) vboxnetadp(O) vboxdrv(O) kvm_intel kvm fuse efi_pstore configfs nfnetlink efivarfs tpm libaescfb ecdh_generic ecc rng_core dmi_sysfs ip_tables x_tables autofs4 hid_generic usbhid sd_mod rtsx_pci_sdmmc mmc_core ahci libahci libata xhci_pci xhci_hcd scsi_mod rtsx_pci scsi_common rtc_cmos dm_mod dax btrfs blake2b_generic libcrc32c crc32c_generic crc32c_intel xor raid6_pq
[  906.236065] CPU: 0 UID: 0 PID: 16856 Comm: sysctl Tainted: G           O       6.12.0-rc7-lowlatency-sunlight1
[  906.236069] Tainted: [O]=OOT_MODULE
[  906.236070] Hardware name: Intel(R) Client Systems NUC7i7BNH/NUC7i7BNB, BIOS BNKBL357.86A.0083.2020.0714.1344 07/14/2020
[  906.236072] RIP: 0010:update_curr_se+0xa0/0xb0
[  906.236077] Code: f6 31 ff c3 cc cc cc cc 80 3d 6f c7 f0 01 00 75 8f 48 89 34 24 c6 05 62 c7 f0 01 01 90 48 c7 c7 00 98 c3 92 e8 51 2d fa ff 90 <0f> 0b 90 90 48 8b 34 24 e9 69 ff ff ff 0f 1f 00 90 90 90 90 90 90
[  906.236079] RSP: 0018:ffffb41f0c7afd28 EFLAGS: 00010046
[  906.236081] RAX: 0000000000000000 RBX: ffff938fdecb5ac0 RCX: 0000000000000000
[  906.236083] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[  906.236084] RBP: ffff9389b094da00 R08: 0000000000000000 R09: 0000000000000000
[  906.236086] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000100000
[  906.236087] R13: ffff938a9360a440 R14: ffff938fdecb5ac0 R15: ffff938fdecb5ac0
[  906.236089] FS:  00007f581bf3c740(0000) GS:ffff938fdec00000(0000) knlGS:0000000000000000
[  906.236091] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  906.236092] CR2: 0000000003493788 CR3: 000000016c0e2002 CR4: 00000000003726f0
[  906.236094] Call Trace:
[  906.236097]  <TASK>
[  906.236101]  ? __warn+0x89/0x130
[  906.236105]  ? update_curr_se+0xa0/0xb0
[  906.236108]  ? report_bug+0x172/0x1a0
[  906.236114]  ? handle_bug+0x61/0xb0
[  906.236117]  ? exc_invalid_op+0x17/0x80
[  906.236120]  ? asm_exc_invalid_op+0x1a/0x20
[  906.236126]  ? update_curr_se+0xa0/0xb0
[  906.236129]  ? update_curr_se+0x9f/0xb0
[  906.236132]  update_curr+0x35/0x280
[  906.236136]  reweight_entity+0x1d0/0x280
[  906.236141]  sched_bore_update_handler+0x11e/0x1a0
[  906.236145]  proc_sys_call_handler+0x1d1/0x300
[  906.236150]  vfs_write+0x2a3/0x460
[  906.236156]  ksys_write+0x6f/0xf0
[  906.236160]  do_syscall_64+0xb7/0x210
[  906.236163]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  906.236166] RIP: 0033:0x7f581c042334
[  906.236187] Code: ff 45 31 d2 45 31 db c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 f3 0f 1e fa 80 3d 35 ed 0e 00 00 74 23 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 74 31 d2 31 c9 31 f6 31 ff 45 31 c0 45 31 db
[  906.236188] RSP: 002b:00007ffd24ff2b88 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[  906.236191] RAX: ffffffffffffffda RBX: 0000000003491780 RCX: 00007f581c042334
[  906.236192] RDX: 0000000000000002 RSI: 000000000348f650 RDI: 0000000000000003
[  906.236194] RBP: 000000000348f610 R08: 0000000000000000 R09: 0000000000000000
[  906.236195] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002
[  906.236196] R13: 0000000000000002 R14: 00007f581c127e80 R15: 00000000004059c8
[  906.236201]  </TASK>
[  906.236202] ---[ end trace 0000000000000000 ]---

sysctl: kernel.sched_autogroup_enabled = 0

[firelzrd]

Thank you.
Let me investigate what's happening.

[firelzrd]

kernel/sched/bore.c : sched_bore_update_handler()
kernel/sched/fair.c : reweight_entity()
kernel/sched/fair.c : update_curr()
kernel/sched/fair.c : update_curr_se()
kernel/sched/sched.h : rq_clock_task()
kernel/sched/sched.h : assert_clock_updated()
SCHED_WARN_ON(rq->clock_update_flags < RQCF_ACT_SKIP);

So far I found out this is where.
We should do something about rq->clock_update_flags | RQCF_ACT_SKIP.