Commit 226f1f72 authored Oct 30, 2015 by Andy Lutomirski Committed by Thomas Gleixner Oct 31, 2015

selftests/x86: Add a fork() to entry_from_vm86 to catch fork bugs



Mere possession of vm86 state is strange.  Make sure that nothing
gets corrupted if we fork after calling vm86().

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Stas Sergeev <stsp@list.ru>
Link: http://lkml.kernel.org/r/08f83295460a80e41dc5e3e81ec40d6844d316f5.1446270067.git.luto@kernel.org


Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

parent ababae44

tools/testing/selftests/x86/entry_from_vm86.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -230,5 +230,9 @@ int main(void)
		}
		clearhandler(SIGSEGV);

		/* Make sure nothing explodes if we fork. */
		if (fork() > 0)
		return 0;

		return (nerrs == 0 ? 0 : 1);
		}