Commit-ID: 226f1f729ce277720fab60c91dd1b12574cfe66c Gitweb: http://git.kernel.org/tip/226f1f729ce277720fab60c91dd1b12574cfe66c Author: Andy Lutomirski <luto@xxxxxxxxxx> AuthorDate: Fri, 30 Oct 2015 22:42:45 -0700 Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx> CommitDate: Sat, 31 Oct 2015 09:50:25 +0100 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@xxxxxxxxxx> Cc: Brian Gerst <brgerst@xxxxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Borislav Petkov <bp@xxxxxxxxx> Cc: Stas Sergeev <stsp@xxxxxxx> Link: http://lkml.kernel.org/r/08f83295460a80e41dc5e3e81ec40d6844d316f5.1446270067.git.luto@xxxxxxxxxx Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> --- tools/testing/selftests/x86/entry_from_vm86.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/testing/selftests/x86/entry_from_vm86.c b/tools/testing/selftests/x86/entry_from_vm86.c index 421c607..d075ea0 100644 --- a/tools/testing/selftests/x86/entry_from_vm86.c +++ b/tools/testing/selftests/x86/entry_from_vm86.c @@ -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); } -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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