Re: [PATCH 1/2] linux-user: Validate mmap/mprotect prot value

[Laurent Vivier]

Le 19/05/2020 à 20:56, Richard Henderson a écrit :
> The kernel will return -EINVAL for bits set in the prot argument
> that are unknown or invalid.  Previously we were simply cropping
> out the bits that we care about.
> 
> Introduce validate_prot_to_pageflags to perform this check in a
> single place between the two syscalls.  Differentiate between
> the target and host versions of prot.  Compute the qemu internal
> page_flags value at the same time.
> 
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>  linux-user/mmap.c | 106 +++++++++++++++++++++++++++++++---------------
>  1 file changed, 73 insertions(+), 33 deletions(-)
> 

Applied to my linux-user-for-5.2 branch.

Thanks,
Laurent