[Kernel-packages] [Bug 2060919] Re: cifs: Copying file to same directory results in page fault
It's ok for me too. Tested with the new kernel and everything works as expected. Thank you very much. $ uname -rv 6.5.0-35-generic #35-Ubuntu SMP PREEMPT_DYNAMIC Fri Apr 26 11:23:57 UTC 2024 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2060919 Title: cifs: Copying file to same directory results in page fault Status in linux package in Ubuntu: Invalid Status in linux source package in Mantic: Fix Committed Bug description: BugLink: https://bugs.launchpad.net/bugs/2060919 [Impact] Copying or modifying a file to the same directory within a cifs mount results in a page fault, and the process that initiated the copy being killed. This could be cp, nautilus, etc. This results in the following oops: BUG: unable to handle page fault for address: fffe #PF: supervisor read access in kernel mode #PF: error_code(0x) - not-present page PGD f45a3f067 P4D f45a3f067 PUD f45a41067 PMD 0 Oops: [#1] PREEMPT SMP NOPTI CPU: 0 PID: 28103 Comm: Thread (pooled) Tainted: P OE 6.5.0-27-generic #28-Ubuntu RIP: 0010:cifs_flush_folio+0x41/0xf0 [cifs] 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 RSP: 0018:aab6865ffbf8 EFLAGS: 00010282 RAX: RBX: fffe RCX: RDX: RSI: RDI: RBP: aab6865ffc28 R08: 0001 R09: R10: 00023854 R11: R12: R13: aab6865ffc78 R14: 906675d8aed0 R15: aab6865ffc70 FS: 7bd4d594b6c0() GS:90753f80() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: fffe CR3: 00017022a000 CR4: 00750ef0 PKRU: 5554 Call Trace: ? show_regs+0x6d/0x80 ? __die+0x24/0x80 ? page_fault_oops+0x99/0x1b0 ? kernelmode_fixup_or_oops+0xb2/0x140 ? __bad_area_nosemaphore+0x1a5/0x2c0 ? bad_area_nosemaphore+0x16/0x30 ? do_kern_addr_fault+0x7b/0xa0 ? exc_page_fault+0x1a4/0x1b0 ? asm_exc_page_fault+0x27/0x30 ? cifs_flush_folio+0x41/0xf0 [cifs] ? cifs_flush_folio+0x37/0xf0 [cifs] cifs_remap_file_range+0x172/0x660 [cifs] do_clone_file_range+0x101/0x2d0 vfs_clone_file_range+0x3f/0x150 ioctl_file_clone+0x52/0xc0 do_vfs_ioctl+0x68f/0x910 ? __fget_light+0xa5/0x120 __x64_sys_ioctl+0x7d/0xf0 do_syscall_64+0x59/0x90 ? kmem_cache_free+0x22/0x3e0 ? putname+0x5b/0x80 ? exit_to_user_mode_prepare+0x30/0xb0 ? syscall_exit_to_user_mode+0x37/0x60 ? do_syscall_64+0x68/0x90 ? do_syscall_64+0x68/0x90 ? do_syscall_64+0x68/0x90 There is no known workaround. [Fix] The stacktrace is very similar to a regression reported to upstream 6.1.y: https://lore.kernel.org/linux- mm/a76b370f93cb928c049b94e1fde0d2da506dfcb2.ca...@amazon.com/T/ The thread mentions that: commit 7b2404a886f8b91250c31855d287e632123e1746 Author: David Howells Date: Fri Dec 1 00:22:00 2023 + Subject: cifs: Fix flushing, invalidation and file size with copy_file_range() Link: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7b2404a886f8b91250c31855d287e632123e1746 introduced the issue to Debian's 6.1 kernel. This got backported to Ubuntu in: commit 3adbe2ccd8b9b8fde93e03958d6176945794d288 Author: David Howells Date: Fri Dec 1 00:22:00 2023 + Subject: cifs: Fix flushing, invalidation and file size with copy_file_range() $ git describe --contains 3adbe2ccd8b9b8fde93e03958d6176945794d288 Ubuntu-6.5.0-20.20~107 Which we have been using for some time now, and is not the culprit. Reading the regression mailing list thread, they mention that things work differently in 6.1: > Yeah. __filemap_get_folio() works differently in v6.1.y. There it returns a > folio or NULL. In 6.7 it returns a folio or a negative error code. The error > check in cifs_flush_folio() needs to change to something like: > > folio = filemap_get_folio(inode->i_mapping, index); > if (!folio) > return -ENOMEM; > > David 6.1.y then got a specific patch to fix the issue in 6.1, which is: commit 21bb2ba4f1ac1e3a57594be62dd74e7b1401b2b1 Author: Steve French Date: Fri Jan 12 23:08:51 2024 -0600 Subject: cifs: fix flushing folio regression for 6.1 backport Link: https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/mantic/commit/?id=21bb2ba4f1ac1e3a57594be62dd74e7b1401b2b1 $ git describe --contains 21bb2ba4f1ac1e3a57594be62dd74e7b1401b2b1 Ubuntu-6.5.0-27.28~162 Since the Ubuntu mantic kernel consumes both 6.1.y and 6.7.y / 6.8.y stable patches, this patch was applied to mantic's 6.5 kernel by mistake, and contains the wrong
[Kernel-packages] [Bug 2060919] Re: 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).
Same issue when I copy files from a Synology smb share to another directory on the same smb share Issue occured after system update. $ lsb_release -rd No LSB modules are available. Description:Ubuntu 23.10 Release:23.10 $ uname -a Linux Panoramix 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 /var/log/syslog 2024-04-11T15:20:25.107768+02:00 Panoramix kernel: [ 5748.234124] BUG: unable to handle page fault for address: fffe 2024-04-11T15:20:25.107782+02:00 Panoramix kernel: [ 5748.234132] #PF: supervisor read access in kernel mode 2024-04-11T15:20:25.107784+02:00 Panoramix kernel: [ 5748.234136] #PF: error_code(0x) - not-present page 2024-04-11T15:20:25.107786+02:00 Panoramix kernel: [ 5748.234138] PGD 44d43f067 P4D 44d43f067 PUD 44d441067 PMD 0 2024-04-11T15:20:25.107788+02:00 Panoramix kernel: [ 5748.234146] Oops: [#1] PREEMPT SMP NOPTI 2024-04-11T15:20:25.107790+02:00 Panoramix kernel: [ 5748.234150] CPU: 10 PID: 326370 Comm: pool-nemo Tainted: G OE 6.5.0-27-generic #28-Ubuntu 2024-04-11T15:20:25.107792+02:00 Panoramix kernel: [ 5748.234155] Hardware name: Micro-Star International Co., Ltd. MS-7C56/MPG B550 GAMING PLUS (MS-7C56), BIOS 1.90 03/17/2022 2024-04-11T15:20:25.107794+02:00 Panoramix kernel: [ 5748.234158] RIP: 0010:cifs_flush_folio+0x41/0xf0 [cifs] 2024-04-11T15:20:25.107809+02:00 Panoramix kernel: [ 5748.234214] 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 23 f5 e0 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 2024-04-11T15:20:25.107811+02:00 Panoramix kernel: [ 5748.234217] RSP: 0018:acb394a9fc30 EFLAGS: 00010282 2024-04-11T15:20:25.107813+02:00 Panoramix kernel: [ 5748.234221] RAX: RBX: fffe RCX: 2024-04-11T15:20:25.107815+02:00 Panoramix kernel: [ 5748.234223] RDX: RSI: RDI: 2024-04-11T15:20:25.107817+02:00 Panoramix kernel: [ 5748.234226] RBP: acb394a9fc60 R08: 0001 R09: 2024-04-11T15:20:25.107819+02:00 Panoramix kernel: [ 5748.234228] R10: 3950 R11: R12: 2024-04-11T15:20:25.107821+02:00 Panoramix kernel: [ 5748.234230] R13: acb394a9fcb0 R14: 97b687327508 R15: acb394a9fca8 2024-04-11T15:20:25.107823+02:00 Panoramix kernel: [ 5748.234233] FS: 79a0b57f26c0() GS:97bd0dc8() knlGS: 2024-04-11T15:20:25.107825+02:00 Panoramix kernel: [ 5748.234236] CS: 0010 DS: ES: CR0: 80050033 2024-04-11T15:20:25.107826+02:00 Panoramix kernel: [ 5748.234239] CR2: fffe CR3: 00018f466000 CR4: 00750ee0 2024-04-11T15:20:25.107828+02:00 Panoramix kernel: [ 5748.234242] PKRU: 5554 2024-04-11T15:20:25.107830+02:00 Panoramix kernel: [ 5748.234244] Call Trace: 2024-04-11T15:20:25.107831+02:00 Panoramix kernel: [ 5748.234247] 2024-04-11T15:20:25.107833+02:00 Panoramix kernel: [ 5748.234251] ? show_regs+0x6d/0x80 2024-04-11T15:20:25.107835+02:00 Panoramix kernel: [ 5748.234258] ? __die+0x24/0x80 2024-04-11T15:20:25.107837+02:00 Panoramix kernel: [ 5748.234263] ? page_fault_oops+0x99/0x1b0 2024-04-11T15:20:25.107839+02:00 Panoramix kernel: [ 5748.234270] ? kernelmode_fixup_or_oops+0xb2/0x140 2024-04-11T15:20:25.107841+02:00 Panoramix kernel: [ 5748.234274] ? __bad_area_nosemaphore+0x1a5/0x2c0 2024-04-11T15:20:25.107843+02:00 Panoramix kernel: [ 5748.234279] ? bad_area_nosemaphore+0x16/0x30 2024-04-11T15:20:25.107845+02:00 Panoramix kernel: [ 5748.234283] ? do_kern_addr_fault+0x7b/0xa0 2024-04-11T15:20:25.107847+02:00 Panoramix kernel: [ 5748.234287] ? exc_page_fault+0x1a4/0x1b0 2024-04-11T15:20:25.107848+02:00 Panoramix kernel: [ 5748.234293] ? asm_exc_page_fault+0x27/0x30 2024-04-11T15:20:25.107850+02:00 Panoramix kernel: [ 5748.234302] ? cifs_flush_folio+0x41/0xf0 [cifs] 2024-04-11T15:20:25.107851+02:00 Panoramix kernel: [ 5748.234340] cifs_remap_file_range+0x172/0x660 [cifs] 2024-04-11T15:20:25.107852+02:00 Panoramix kernel: [ 5748.234378] do_clone_file_range+0x104/0x2d0 2024-04-11T15:20:25.107854+02:00 Panoramix kernel: [ 5748.234388] vfs_clone_file_range+0x3f/0x150 2024-04-11T15:20:25.107864+02:00 Panoramix kernel: [ 5748.234393] ioctl_file_clone+0x52/0xc0 2024-04-11T15:20:25.107865+02:00 Panoramix kernel: [ 5748.234399] do_vfs_ioctl+0x68f/0x910 2024-04-11T15:20:25.107867+02:00 Panoramix kernel: [ 5748.234404] ? srso_alias_return_thunk+0x5/0x7f 2024-04-11T15:20:25.107869+02:00 Panoramix kernel: [ 5748.234409] ? __fget_light+0xa5/0x120 2024-04-11T15:20:25.107870+02:00 Panoramix kernel: [ 5748.234415] __x64_sys_ioctl+0x7d/0xf0 2024-04-11T15:20:25.107872+02:00 Panoramix
