Bug 13484 - Known and unfixed active data loss bug in MM + XFS with large folios since Dec 2021 (any kernel from 6.1 upwards)
Summary: Known and unfixed active data loss bug in MM + XFS with large folios since De...
Status: NEW
Alias: None
Product: ANCK 6.6 Dev
Classification: ANCK
Component: X86 (show other bugs) X86
Version: 6.6.25-2.1
Hardware: All Linux
: P3-Medium S3-normal
Target Milestone: ---
Assignee: Guanjun
QA Contact: shuming
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-01-13 14:58 UTC by cyxhlc
Modified: 2025-01-13 14:58 UTC (History)
3 users (show)

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Description cyxhlc 2025-01-13 14:58:28 UTC 
Description of problem:
Known and unfixed active data loss bug in MM + XFS with large folios since Dec 2021 (any kernel from 6.1 upwards).

Version-Release number of selected component (if applicable):
from 6.1 upwards

How reproducible:


Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:
Discussion from upstream:
https://lore.kernel.org/linux-mm/CAHk-=wjty_0NfiZn2HVzT0Ye-RR09+Rqbd1azwJLOTJrX+V5MQ@mail.gmail.com/T/

Merged patches in kernel v6.6:
[PATCH v4 1/4] mm/filemap: return early if failed to allocate memory for split 
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.6.y&id=ff3c557fa93e7fcf5891e38fa7285b3c44e994b3
[PATCH v4 3/4] lib/xarray: introduce a new helper xas_get_order 
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.6.y&id=734594d41c8ed87174bbc8f443a935f702de974b
[PATCH v4 4/4] mm/filemap: optimize filemap folio adding 
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.6.y&id=722e9e5acccf2f00368e11c8cc792032626202f7