[PATCH v3 00/10] ext4: Overflow fixes

[Tom Rini]

On Sat, May 10, 2025 at 03:06:06PM +0200, Simon Glass wrote:

> This series fixes some potential overflows in the ext4 code with invalid
> or malicious filesystems.
> 
> To assist with this and future work, it brings in overflow.h and part of
> limits.h from Linux.
> 
> Changes in v3:
> - Split out into separate patches for easier review
> 
> Changes in v2:
> - Add new patch to bring in linux/limits.h
> - Add new patch to bring in linux/overflow.h
> - Use Linux macros instead of gcc built-ins
> 
> Simon Glass (10):
>   Bring in linux/limits.h
>   Bring in linux/overflow.h
>   ext4: Avoid expr in declaration in ext4fs_get_bgdtable()
>   ext4: Create a var for the number of blocks to allocate
>   ext4: Check for overflow of block count
>   ext4: Bail out of no_blk_pergdt() if there are no blocks
>   ext4: Replace multiplication with an existing variable
>   ext4: Set a max limit on block-size in ext4fs_init()
>   ext4: Make sure there is at least one sector per block
>   ext4: Check for overflow when allocating tables
> 
>  fs/ext4/ext4_write.c     |  25 ++-
>  include/limits.h         |   2 +
>  include/linux/kernel.h   |  12 --
>  include/linux/limits.h   |  21 ++
>  include/linux/overflow.h | 443 +++++++++++++++++++++++++++++++++++++++
>  5 files changed, 487 insertions(+), 16 deletions(-)
>  create mode 100644 include/linux/limits.h
>  create mode 100644 include/linux/overflow.h
> 
> -- 
> 2.43.0
> 
> base-commit: c5a631df96de7421d10ee03dceed1b79db213026
> branch: sec3

Since this commit isn't mainline, there's nothing further to do with it.

-- 
Tom
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