Cmnt: [SRU][F/J 0/2][N 0/1][PATCH] CVE-2024-44942

[Koichiro Den]

There is a follow-up commit (sort of fix commit) for the prereq you
applied: a78118406d52 ("f2fs: use f2fs_{err,info}_ratelimited() for
cleanup"), which I think should also be applied for Jammy and Focal
if you pull the prereq.

On Tue, Oct 01, 2024 at 06:49:47PM +0200, Massimiliano Pellizzer wrote:
> [Impact]
> 
> Add sanity check on F2FS_INLINE_DATA flag in inode during garbage
> collection.
> 
> [Fix]
> 
> Noble:  Cherry picked the fix commit from linux-6.10.y
> Jammy:  Backported both a prereq and the fix from linux-6.6.y
> Focal:  Backported both a prereq and the fix from linux-6.6.y
> Bionic: In progress
> Xenial: In progress
> 
> [Test Case]
> 
> Compile and boot tested.
> Moreover tested a f2fs partition using the command:
> stress-ng --hdd 4 --hdd-ops 200000 --iomix 4 --timeout 120s --temp-path /path/to/f2fs
> 
> [Where problems could occur]
> 
> The fix affects the f2fs filesystem. An issue with this fix may lead to
> kernel crashes, particularly during the garbage collection process.
> Users may also notice filesystem inconsistencies and data corruption.
> 
> Chao Yu (2):
>   f2fs: support printk_ratelimited() in f2fs_printk()
>   f2fs: fix to do sanity check on F2FS_INLINE_DATA flag in inode during
>     GC
> 
>  fs/f2fs/dir.c   |  5 ++---
>  fs/f2fs/f2fs.h  | 38 ++++++++++++++++++++++----------------
>  fs/f2fs/gc.c    | 10 ++++++++++
>  fs/f2fs/super.c | 11 ++++++++---
>  4 files changed, 42 insertions(+), 22 deletions(-)
> 
> -- 
> 2.43.0
> 
> 
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