[PATCH v3 00/10] ext4: Overflow fixes

[Simon Glass]

Hi Tom,

On Wed, 14 May 2025 at 23:50, Tom Rini <trini at konsulko.com> wrote:
>
> 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.

If you'd like to review the series, please do. I just checked again
and it applies fine to your tree.

Regards,
Simon