[U-Boot] [PATCH v1] fs: ubifs: Fix UBIFS decompression on 64 bit

[Heiko Schocher]

Hello Paul,

Am 05.11.2018 um 06:09 schrieb Paul Davey:
> Add local size_t variable to crypto_comp_decompress as intermediate
> storage for destination length to avoid memory corruption and incorrect
> results on 64 bit targets.
> 
> This is what linux does for the various lz compression implementations.
> 
> Signed-off-by: Paul Davey <paul.davey at alliedtelesis.co.nz>
> Cc: Heiko Schocher <hs at denx.de>
> ---
> 
> When attempting to use ubifs on a MIPS64 platform I found that it would fail
> decompression for the file I was attempting to load.
> 
> Further investigation found that this was due to the pointer cast from unsigned
> int * to size_t * in the decompression wrapper.  This will cause any big endian
> 64 bit platform to fail to load any ubifs file that requires decompression and
> at least cause little endian 64 bit platforms to silently write 0 over 4 bytes
> of stack memory.
> 
>   fs/ubifs/ubifs.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)

Applied to u-boot-ubi.git master

Thanks!

bye,
Heiko
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