Re: [PATCH v2 resend] seccomp: Make syscall skipping and nr changesmore consistent

[James Morris]

On Mon, 1 Oct 2012, Andy Lutomirski wrote:

> This fixes two issues that could cause incompatibility between
> kernel versions:
> 
>  - If a tracer uses SECCOMP_RET_TRACE to select a syscall number
>    higher than the largest known syscall, emulate the unknown
>    vsyscall by returning -ENOSYS.  (This is unlikely to make a
>    noticeable difference on x86-64 due to the way the system call
>    entry works.)
> 
>  - On x86-64 with vsyscall=emulate, skipped vsyscalls were buggy.
> 
> This updates the documentation accordingly.
> 
> Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
> Acked-by: Will Drewry <wad@xxxxxxxxxxxx>

Applied to
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security.git next-queue

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