@mruffell I've noticed that the users who have tested your kernel got something in common: the remote system mounted as cifs isn't in an Ubuntu server and it's kernel seems to be older than Ubuntu's client one... Maybe it's something that can help you to reproduce the problem yourself.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-hwe-6.5 in Ubuntu. https://bugs.launchpad.net/bugs/2060919 Title: Remote filesystems mounted as CIFS not working after update to Kernel "6.5.0-27-generic #28-Ubuntu" (amd64) or Kernel "6.5.0-1014-raspi #17-Ubuntu" (aarch64). Status in linux package in Ubuntu: Confirmed Status in linux-azure package in Ubuntu: New Status in linux-hwe-6.5 package in Ubuntu: Confirmed Status in linux-raspi package in Ubuntu: Confirmed Bug description: Remote filesystems mounted as CIFS are not working after update to Kernel "6.5.0-27-generic #28-Ubuntu" for x86_64 (and also after updating to Kernel "6.5.0-1014-raspi #17-Ubuntu" in aarch64). The remote filesystem is correctly mounted and seems to work but trying to write data to the filesystem ends in a kernel error exception. After that error the CIFS filesystem just became unusable. Previous Kernel version works correctly. ========================================================= Example for Kernel "6.5.0-27-generic #28-Ubuntu" (x86_64) ========================================================= # lsb_release -rd No LSB modules are available. Description: Ubuntu 23.10 Release: 23.10 # uname -a Linux fpgmsi 6.5.0-27-generic #28-Ubuntu SMP PREEMPT_DYNAMIC Thu Mar 7 18:21:00 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux # cat /proc/version_signature Ubuntu 6.5.0-27.28-generic 6.5.13 ---------------------------- How to reproduce the problem ---------------------------- For instance, I'm using KeePassXC (https://launchpad.net/ubuntu/+source/keepassxc) to update a database located at CIFS filesystem. Any change done to that database causes this Kernel error exception: abr 11 09:34:59 fpgmsi kernel: BUG: unable to handle page fault for address: fffffffffffffffe abr 11 09:34:59 fpgmsi kernel: #PF: supervisor read access in kernel mode abr 11 09:34:59 fpgmsi kernel: #PF: error_code(0x0000) - not-present page abr 11 09:34:59 fpgmsi kernel: PGD f45a3f067 P4D f45a3f067 PUD f45a41067 PMD 0 abr 11 09:34:59 fpgmsi kernel: Oops: 0000 [#1] PREEMPT SMP NOPTI abr 11 09:34:59 fpgmsi kernel: CPU: 0 PID: 28103 Comm: Thread (pooled) Tainted: P OE 6.5.0-27-generic #28-Ubuntu abr 11 09:34:59 fpgmsi kernel: Hardware name: Micro-Star International Co., Ltd. MAG Z690 Codex X5 (MS-B930)/PRO Z690-A WIFI (MS-7D25), BIOS D.50 04/26/2022 abr 11 09:34:59 fpgmsi kernel: RIP: 0010:cifs_flush_folio+0x41/0xf0 [cifs] abr 11 09:34:59 fpgmsi kernel: Code: 49 89 cd 31 c9 41 54 49 89 f4 48 c1 ee 0c 53 48 83 ec 08 48 8b 7f 30 44 89 45 d4 e8 79 b3 23 f1 48 89 c3 31 c0 48 85 db 74 77 <48> 8b 13 b8 00 10 00 00 f7 c2 00 00 01 00 74 10 0f b6 4b 51 48 d3 abr 11 09:34:59 fpgmsi kernel: RSP: 0018:ffffaab6865ffbf8 EFLAGS: 00010282 abr 11 09:34:59 fpgmsi kernel: RAX: 0000000000000000 RBX: fffffffffffffffe RCX: 0000000000000000 abr 11 09:34:59 fpgmsi kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 abr 11 09:34:59 fpgmsi kernel: RBP: ffffaab6865ffc28 R08: 0000000000000001 R09: 0000000000000000 abr 11 09:34:59 fpgmsi kernel: R10: 0000000000023854 R11: 0000000000000000 R12: 0000000000000000 abr 11 09:34:59 fpgmsi kernel: R13: ffffaab6865ffc78 R14: ffff906675d8aed0 R15: ffffaab6865ffc70 abr 11 09:34:59 fpgmsi kernel: FS: 00007bd4d594b6c0(0000) GS:ffff90753f800000(0000) knlGS:0000000000000000 abr 11 09:34:59 fpgmsi kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 abr 11 09:34:59 fpgmsi kernel: CR2: fffffffffffffffe CR3: 000000017022a000 CR4: 0000000000750ef0 abr 11 09:34:59 fpgmsi kernel: PKRU: 55555554 abr 11 09:34:59 fpgmsi kernel: Call Trace: abr 11 09:34:59 fpgmsi kernel: <TASK> abr 11 09:34:59 fpgmsi kernel: ? show_regs+0x6d/0x80 abr 11 09:34:59 fpgmsi kernel: ? __die+0x24/0x80 abr 11 09:34:59 fpgmsi kernel: ? page_fault_oops+0x99/0x1b0 abr 11 09:34:59 fpgmsi kernel: ? kernelmode_fixup_or_oops+0xb2/0x140 abr 11 09:34:59 fpgmsi kernel: ? __bad_area_nosemaphore+0x1a5/0x2c0 abr 11 09:34:59 fpgmsi kernel: ? bad_area_nosemaphore+0x16/0x30 abr 11 09:34:59 fpgmsi kernel: ? do_kern_addr_fault+0x7b/0xa0 abr 11 09:34:59 fpgmsi kernel: ? exc_page_fault+0x1a4/0x1b0 abr 11 09:34:59 fpgmsi kernel: ? asm_exc_page_fault+0x27/0x30 abr 11 09:34:59 fpgmsi kernel: ? cifs_flush_folio+0x41/0xf0 [cifs] abr 11 09:34:59 fpgmsi kernel: ? cifs_flush_folio+0x37/0xf0 [cifs] abr 11 09:34:59 fpgmsi kernel: cifs_remap_file_range+0x172/0x660 [cifs] abr 11 09:34:59 fpgmsi kernel: do_clone_file_range+0x101/0x2d0 abr 11 09:34:59 fpgmsi kernel: vfs_clone_file_range+0x3f/0x150 abr 11 09:34:59 fpgmsi kernel: ioctl_file_clone+0x52/0xc0 abr 11 09:34:59 fpgmsi kernel: do_vfs_ioctl+0x68f/0x910 abr 11 09:34:59 fpgmsi kernel: ? __fget_light+0xa5/0x120 abr 11 09:34:59 fpgmsi kernel: __x64_sys_ioctl+0x7d/0xf0 abr 11 09:34:59 fpgmsi kernel: do_syscall_64+0x59/0x90 abr 11 09:34:59 fpgmsi kernel: ? kmem_cache_free+0x22/0x3e0 abr 11 09:34:59 fpgmsi kernel: ? putname+0x5b/0x80 abr 11 09:34:59 fpgmsi kernel: ? exit_to_user_mode_prepare+0x30/0xb0 abr 11 09:34:59 fpgmsi kernel: ? syscall_exit_to_user_mode+0x37/0x60 abr 11 09:34:59 fpgmsi kernel: ? do_syscall_64+0x68/0x90 abr 11 09:34:59 fpgmsi kernel: ? do_syscall_64+0x68/0x90 abr 11 09:34:59 fpgmsi kernel: ? do_syscall_64+0x68/0x90 abr 11 09:34:59 fpgmsi kernel: entry_SYSCALL_64_after_hwframe+0x6e/0xd8 abr 11 09:34:59 fpgmsi kernel: RIP: 0033:0x7bd4ff12396f abr 11 09:34:59 fpgmsi kernel: Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 18 48 8b 44 24 18 64 48 2b 04 25 28 00 00 abr 11 09:34:59 fpgmsi kernel: RSP: 002b:00007bd4d59498a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 abr 11 09:34:59 fpgmsi kernel: RAX: ffffffffffffffda RBX: 0000000000000023 RCX: 00007bd4ff12396f abr 11 09:34:59 fpgmsi kernel: RDX: 0000000000000023 RSI: 0000000040049409 RDI: 000000000000002c abr 11 09:34:59 fpgmsi kernel: RBP: 000000000000002c R08: 00007bd4c80008e0 R09: 0000000000000007 abr 11 09:34:59 fpgmsi kernel: R10: 00007bd4c80026b0 R11: 0000000000000246 R12: 00007bd4c8001380 abr 11 09:34:59 fpgmsi kernel: R13: 00007bd4d5949a10 R14: 00007bd4c8001e20 R15: 00007bd4d5949a00 abr 11 09:34:59 fpgmsi kernel: </TASK> abr 11 09:34:59 fpgmsi kernel: Modules linked in: rfcomm snd_seq_dummy snd_hrtimer vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) nls_utf8 cifs cifs_arc4 cifs_md4 fscache netfs cmac algif_hash algif_skcipher af_alg nft_chain_nat nvidia_uvm(POE) nf_nat bnep zram xt_tcpudp sunrpc xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables binfmt_misc nfnetlink nls_iso8859_1 intel_rapl_msr intel_rapl_common intel_uncore_frequency intel_uncore_frequency_common snd_sof_pci_intel_tgl nvidia_drm(POE) snd_sof_intel_hda_common nvidia_modeset(POE) soundwire_intel x86_pkg_temp_thermal intel_powerclamp snd_sof_intel_hda_mlink soundwire_cadence snd_sof_intel_hda snd_sof_pci snd_sof_xtensa_dsp snd_hda_codec_realtek snd_sof snd_hda_codec_generic ledtrig_audio snd_sof_utils snd_soc_hdac_hda snd_hda_ext_core snd_soc_acpi_intel_match snd_soc_acpi soundwire_generic_allocation snd_hda_codec_hdmi soundwire_bus snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine snd_hda_intel snd_intel_dspc fg snd_intel_sdw_acpi snd_hda_codec snd_hda_core abr 11 09:34:59 fpgmsi kernel: snd_hwdep coretemp iwlmvm snd_pcm btusb btrtl kvm_intel btbcm snd_seq_midi snd_seq_midi_event btintel cmdlinepart mac80211 btmtk snd_rawmidi spi_nor nvidia(POE) libarc4 kvm bluetooth snd_seq mtd iwlwifi pmt_telemetry snd_seq_device pmt_class snd_timer irqbypass rapl ecdh_generic joydev intel_cstate input_leds wmi_bmof mxm_wmi ecc cfg80211 snd mei_me i2c_i801 spi_intel_pci soundcore mei spi_intel i2c_smbus intel_vsec serial_multi_instantiate acpi_pad acpi_tad mac_hid tcp_bbr sch_fq vmwgfx drm_ttm_helper ttm drm_kms_helper parport_pc ppdev lp parport drm efi_pstore dmi_sysfs ip_tables x_tables autofs4 btrfs blake2b_generic raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear dm_mirror dm_region_hash dm_log msr lz4 lz4_compress hid_generic usbhid hid crct10dif_pclmul crc32_pclmul polyval_clmulni polyval_generic ghash_clmulni_intel sha256_ssse3 sha1_ssse3 aesni_intel nvme crypto_sim d cryptd nvme_core igc ahci xhci_pci libahci nvme_common abr 11 09:34:59 fpgmsi kernel: xhci_pci_renesas video wmi pinctrl_alderlake abr 11 09:34:59 fpgmsi kernel: CR2: fffffffffffffffe abr 11 09:34:59 fpgmsi kernel: ---[ end trace 0000000000000000 ]--- abr 11 09:34:59 fpgmsi kernel: RIP: 0010:cifs_flush_folio+0x41/0xf0 [cifs] abr 11 09:34:59 fpgmsi kernel: Code: 49 89 cd 31 c9 41 54 49 89 f4 48 c1 ee 0c 53 48 83 ec 08 48 8b 7f 30 44 89 45 d4 e8 79 b3 23 f1 48 89 c3 31 c0 48 85 db 74 77 <48> 8b 13 b8 00 10 00 00 f7 c2 00 00 01 00 74 10 0f b6 4b 51 48 d3 abr 11 09:34:59 fpgmsi kernel: RSP: 0018:ffffaab6865ffbf8 EFLAGS: 00010282 abr 11 09:34:59 fpgmsi kernel: RAX: 0000000000000000 RBX: fffffffffffffffe RCX: 0000000000000000 abr 11 09:34:59 fpgmsi kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 abr 11 09:34:59 fpgmsi kernel: RBP: ffffaab6865ffc28 R08: 0000000000000001 R09: 0000000000000000 abr 11 09:34:59 fpgmsi kernel: R10: 0000000000023854 R11: 0000000000000000 R12: 0000000000000000 abr 11 09:34:59 fpgmsi kernel: R13: ffffaab6865ffc78 R14: ffff906675d8aed0 R15: ffffaab6865ffc70 abr 11 09:34:59 fpgmsi kernel: FS: 00007bd4d594b6c0(0000) GS:ffff90753f800000(0000) knlGS:0000000000000000 abr 11 09:34:59 fpgmsi kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 abr 11 09:34:59 fpgmsi kernel: CR2: fffffffffffffffe CR3: 000000017022a000 CR4: 0000000000750ef0 abr 11 09:34:59 fpgmsi kernel: PKRU: 55555554 abr 11 09:34:59 fpgmsi kernel: note: Thread (pooled)[28103] exited with irqs disabled After that error the CIFS filesystem just became unusable. ProblemType: Bug DistroRelease: Ubuntu 23.10 Package: linux-image-6.5.0-27-generic 6.5.0-27.28 ProcVersionSignature: Ubuntu 6.5.0-27.28-generic 6.5.13 Uname: Linux 6.5.0-27-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.27.0-0ubuntu5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: fprietog 11499 F.... wireplumber /dev/snd/controlC1: fprietog 11499 F.... wireplumber /dev/snd/seq: fprietog 11497 F.... pipewire CRDA: N/A CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Thu Apr 11 09:35:10 2024 InstallationDate: Installed on 2015-04-02 (3296 days ago) InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1) MachineType: {report['dmi.sys.vendor']} {report['dmi.product.name']} ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.5.0-27-generic root=UUID=07a25daf-33fb-475f-86e0-72ec5d0b3702 ro noplymouth nvidia-drm.modeset=1 RelatedPackageVersions: linux-restricted-modules-6.5.0-27-generic N/A linux-backports-modules-6.5.0-27-generic N/A linux-firmware 20230919.git3672ccab-0ubuntu2.9 SourcePackage: linux UpgradeStatus: Upgraded to mantic on 2023-10-25 (169 days ago) dmi.bios.date: 04/26/2022 dmi.bios.release: 5.24 dmi.bios.vendor: American Megatrends International, LLC. dmi.bios.version: D.50 dmi.board.asset.tag: Default string dmi.board.name: PRO Z690-A WIFI (MS-7D25) dmi.board.vendor: Micro-Star International Co., Ltd. dmi.board.version: 2.1 dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Micro-Star International Co., Ltd. dmi.chassis.version: 2.1 dmi.modalias: dmi:bvnAmericanMegatrendsInternational,LLC.:bvrD.50:bd04/26/2022:br5.24:svnMicro-StarInternationalCo.,Ltd.:pnMAGZ690CodexX5(MS-B930):pvr2.1:rvnMicro-StarInternationalCo.,Ltd.:rnPROZ690-AWIFI(MS-7D25):rvr2.1:cvnMicro-StarInternationalCo.,Ltd.:ct3:cvr2.1:skuB930.D: dmi.product.family: Desktop dmi.product.name: MAG Z690 Codex X5 (MS-B930) dmi.product.sku: B930.D dmi.product.version: 2.1 dmi.sys.vendor: Micro-Star International Co., Ltd. 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