diff options
| author | Andy Lutomirski <luto@kernel.org> | 2016-01-12 11:56:15 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-01-13 10:34:40 +0100 |
| commit | 65cacec1ba908a153cfb19c4de596a108f95970c (patch) | |
| tree | d14443d39d595e39158ab97cbacca7b9fd736485 /tools/testing/selftests/x86/Makefile | |
| parent | 2f0c0b2d96b1205efb14347009748d786c2d9ba5 (diff) | |
selftests/x86: Test __kernel_sigreturn and __kernel_rt_sigreturn
The vdso-based sigreturn mechanism is fragile and isn't used by
modern glibc so, if we break it, we'll only notice when someone
tests an unusual libc.
Add an explicit selftest.
[ I wrote this while debugging a Bionic breakage -- my first guess
was that I had somehow messed up sigreturn. I've caused problems in
that code before, and it's really easy to fail to notice it because
there's nothing on a modern distro that needs vdso-based sigreturn. ]
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/32946d714156879cd8e5d8eab044cd07557ed558.1452628504.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/testing/selftests/x86/Makefile')
| -rw-r--r-- | tools/testing/selftests/x86/Makefile | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/testing/selftests/x86/Makefile b/tools/testing/selftests/x86/Makefile index 398bb0e6e38c..d0c473f65850 100644 --- a/tools/testing/selftests/x86/Makefile +++ b/tools/testing/selftests/x86/Makefile @@ -7,7 +7,8 @@ include ../lib.mk TARGETS_C_BOTHBITS := single_step_syscall sysret_ss_attrs syscall_nt ptrace_syscall TARGETS_C_32BIT_ONLY := entry_from_vm86 syscall_arg_fault sigreturn test_syscall_vdso unwind_vdso \ test_FCMOV test_FCOMI test_FISTTP \ - ldt_gdt + ldt_gdt \ + vdso_restorer TARGETS_C_32BIT_ALL := $(TARGETS_C_BOTHBITS) $(TARGETS_C_32BIT_ONLY) BINARIES_32 := $(TARGETS_C_32BIT_ALL:%=%_32) |