Re: [PATCH v2] x86/asm/entry/32, selftests: Add test_syscall_vdso test

[Ingo Molnar]

* Denys Vlasenko <dvlasenk@xxxxxxxxxx> wrote:

> The test is fairly simplistic: it checks that all registers
> are preserved across 32-bit syscall via VDSO.
> 
> Run-tested:
> 
> $ ./test_syscall_vdso_32
> [RUN]	Executing 6-argument 32-bit syscall via VDSO
> [Ok]	Arguments are preserved across syscall
> [RUN]	Executing 6-argument 32-bit syscall via INT 80
> [Ok]	Arguments are preserved across syscall
> [RUN]	Running tests under ptrace
> [RUN]	Executing 6-argument 32-bit syscall via VDSO
> [Ok]	Arguments are preserved across syscall
> [RUN]	Executing 6-argument 32-bit syscall via INT 80
> [Ok]	Arguments are preserved across syscall

Just curious: is there a kernel sha1 where this test would fail? Or did you try to 
provoke an information leak perhaps?

Thanks,

	Ingo
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