I saw some problems in dmesg ( when running test generic/005) multiple similar errors. Anyone else see them? Rohith, Can you repro that? [171877.491187] run fstests generic/005 at 2021-04-12 12:20:57 [171878.245576] ------------[ cut here ]------------ [171878.245578] WARNING: CPU: 5 PID: 546266 at arch/x86/include/asm/kfence.h:44 kfence_protect_page+0x33/0xa0 [171878.245583] Modules linked in: cifs(OE) md4 rfcomm nls_utf8 libdes ccm cachefiles fscache nf_tables nfnetlink cmac algif_hash algif_skcipher af_alg bnep nls_iso8859_1 mei_hdcp intel_rapl_msr x86_pkg_temp_thermal intel_powerclamp snd_sof_pci_intel_cnl snd_sof_intel_hda_common coretemp snd_soc_hdac_hda soundwire_intel soundwire_generic_allocation soundwire_cadence snd_sof_intel_hda kvm_intel snd_sof_pci nouveau snd_sof iwlmvm kvm snd_sof_xtensa_dsp snd_hda_ext_core snd_soc_acpi_intel_match mac80211 snd_soc_acpi crct10dif_pclmul soundwire_bus ghash_clmulni_intel aesni_intel snd_hda_codec_realtek snd_soc_core mxm_wmi snd_hda_codec_generic drm_ttm_helper crypto_simd ttm cryptd snd_compress snd_hda_codec_hdmi libarc4 ac97_bus drm_kms_helper snd_pcm_dmaengine rapl btusb cec intel_cstate snd_hda_intel uvcvideo btrtl rc_core btbcm videobuf2_vmalloc btintel videobuf2_memops iwlwifi snd_intel_dspcfg videobuf2_v4l2 fb_sys_fops snd_intel_sdw_acpi thinkpad_acpi serio_raw videobuf2_common syscopyarea [171878.245630] bluetooth snd_hda_codec processor_thermal_device efi_pstore videodev processor_thermal_rfim sysfillrect processor_thermal_mbox snd_seq_midi processor_thermal_rapl sysimgblt snd_hda_core ecdh_generic snd_seq_midi_event snd_hwdep nvidiafb ucsi_acpi nvram intel_rapl_common input_leds mc ecc mei_me platform_profile intel_wmi_thunderbolt vgastate typec_ucsi wmi_bmof elan_i2c ee1004 ledtrig_audio cfg80211 8250_dw fb_ddc joydev snd_pcm mei i2c_algo_bit intel_soc_dts_iosf intel_pch_thermal snd_rawmidi typec snd_seq snd_seq_device snd_timer snd soundcore int3403_thermal int340x_thermal_zone int3400_thermal acpi_thermal_rel acpi_pad mac_hid sch_fq_codel parport_pc ppdev lp parport drm sunrpc ip_tables x_tables autofs4 wacom hid_generic usbhid hid xfs btrfs blake2b_generic xor raid6_pq libcrc32c rtsx_pci_sdmmc crc32_pclmul nvme psmouse e1000e i2c_i801 intel_lpss_pci i2c_smbus rtsx_pci nvme_core intel_lpss xhci_pci idma64 xhci_pci_renesas wmi video pinctrl_cannonlake [171878.245679] [last unloaded: cifs] [171878.245680] CPU: 5 PID: 546266 Comm: kworker/5:1 Tainted: G W OE 5.12.0-051200rc6-generic #202104042231 [171878.245682] Hardware name: LENOVO 20MAS08500/20MAS08500, BIOS N2CET54W (1.37 ) 06/20/2020 [171878.245684] Workqueue: cifsoplockd cifs_oplock_break [cifs] [171878.245720] RIP: 0010:kfence_protect_page+0x33/0xa0 [171878.245724] Code: 53 89 f3 48 8d 75 e4 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 45 e8 31 c0 e8 d8 f4 d9 ff 48 85 c0 74 06 83 7d e4 01 74 06 <0f> 0b 31 c0 eb 39 48 8b 38 48 89 c2 84 db 75 47 48 89 f8 0f 1f 40 [171878.245726] RSP: 0018:ffffa33b84d47c20 EFLAGS: 00010046 [171878.245727] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffa33b84d47c24 [171878.245729] RDX: ffffa33b84d47c24 RSI: 0000000000000000 RDI: 0000000000000000 [171878.245730] RBP: ffffa33b84d47c40 R08: 0000000000000000 R09: 0000000000000000 [171878.245731] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [171878.245732] R13: ffffa33b84d47d68 R14: ffffa33b84d47d68 R15: 0000000000000000 [171878.245734] FS: 0000000000000000(0000) GS:ffff8da17bb40000(0000) knlGS:0000000000000000 [171878.245736] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [171878.245737] CR2: 0000000000000268 CR3: 0000000484e10003 CR4: 00000000003706e0 [171878.245739] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [171878.245740] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [171878.245741] Call Trace: [171878.245744] kfence_unprotect+0x17/0x30 [171878.245746] kfence_handle_page_fault+0x97/0x250 [171878.245748] page_fault_oops+0x88/0x130 [171878.245751] do_user_addr_fault+0x323/0x670 [171878.245754] ? cifsFileInfo_put_final+0x10a/0x120 [cifs] [171878.245784] exc_page_fault+0x6c/0x150 [171878.245808] asm_exc_page_fault+0x1e/0x30 [171878.245811] RIP: 0010:_raw_spin_lock+0xc/0x30 [171878.245814] Code: ba 01 00 00 00 f0 0f b1 17 75 01 c3 55 89 c6 48 89 e5 e8 d7 42 4b ff 66 90 5d c3 0f 1f 00 0f 1f 44 00 00 31 c0 ba 01 00 00 00 <f0> 0f b1 17 75 01 c3 55 89 c6 48 89 e5 e8 b2 42 4b ff 66 90 5d c3 [171878.245830] RSP: 0018:ffffa33b84d47e10 EFLAGS: 00010246 [171878.245831] RAX: 0000000000000000 RBX: ffff8d9a0994d510 RCX: 000000008020001e [171878.245832] RDX: 0000000000000001 RSI: 000000008020001e RDI: 0000000000000268 [171878.245833] RBP: ffffa33b84d47e70 R08: 0000000000000001 R09: 0000000000000001 [171878.245834] R10: ffffffffaec73500 R11: 0000000000000000 R12: 0000000000000000 [171878.245835] R13: ffff8d9a0994d400 R14: ffff8d9f9e1f9c20 R15: ffff8d9a092b1800 [171878.245838] ? cifs_oplock_break+0x1e9/0x5d0 [cifs] [171878.245871] process_one_work+0x220/0x3c0 [171878.245874] worker_thread+0x50/0x370 [171878.245876] kthread+0x12f/0x150 [171878.245878] ? process_one_work+0x3c0/0x3c0 [171878.245880] ? __kthread_bind_mask+0x70/0x70 [171878.245882] ret_from_fork+0x22/0x30 [171878.245887] ---[ end trace fefd5c5bed217748 ]--- [171878.245892] ------------[ cut here ]------------ On Tue, Mar 9, 2021 at 3:11 AM Rohith Surabattula <rohiths.msft@xxxxxxxxx> wrote: > > Hi All, > > Please find the attached patch which will defer the close to server. > So, performance can be improved. > > i.e When file is open, write, close, open, read, close.... > As close is deferred and oplock is held, cache will not be invalidated > and same handle can be used for second open. > > Please review the changes and let me know your thoughts. > > Regards, > Rohith -- Thanks, Steve
