selftests/x86: Add a test for process_vm_readv() on the vsyscall page

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get_gate_page() is a piece of somewhat alarming code to make
get_user_pages() work on the vsyscall page.  Test it via
process_vm_readv().

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: Jann Horn <jannh@google.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Kernel Hardening <kernel-hardening@lists.openwall.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lkml.kernel.org/r/0fe34229a9330e8f9de9765967939cc4f1cf26b1.1561610354.git.luto@kernel.org

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Andy Lutomirski 2019-06-26 21:45:09 -07:00 • committed by Thomas Gleixner

parent 441cedab2d

commit 7f0a5e0755

1 changed files with 35 additions and 0 deletions

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tools/testing/selftests/x86/test_vsyscall.c

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