On Thu, 2024-12-12 at 14:50 +0100, Mikhail Zaslonko wrote:
> Since the input data length passed to zlib_compress_folios() can be
> arbitrary, always setting strm.avail_in to a multiple of PAGE_SIZE
> may
> cause read-in bytes to exceed the input range. Currently this
> triggers
> an assert in btrfs_compress_folios() on the debug kernel. But it may
> potentially lead to data corruption.
> Fix strm.avail_in calculation for S390 hardware acceleration path.
>
> Signed-off-by: Mikhail Zaslonko <zaslonko@xxxxxxxxxxxxx>
> Fixes: fd1e75d0105d ("btrfs: make compression path to be subpage
> compatible")
> ---
> fs/btrfs/zlib.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
Acked-by: Ilya Leoshkevich <iii@xxxxxxxxxxxxx>
