Andy Lutomirski 65cacec1ba 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>

2016-01-13 10:34:40 +01:00

..

.gitignore

x86, selftests: Add sigreturn selftest

2015-04-08 08:22:02 +02:00

check_cc.sh

selftests, x86: Rework x86 target architecture detection

2015-05-12 20:02:40 -06:00

entry_from_vm86.c

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

2015-10-31 09:50:25 +01:00

ldt_gdt.c

selftests/x86, x86/ldt: Add a selftest for modify_ldt()

2015-07-31 10:24:37 +02:00

Makefile

selftests/x86: Test __kernel_sigreturn and __kernel_rt_sigreturn

2016-01-13 10:34:40 +01:00

ptrace_syscall.c

selftests/x86: Add a test for ptrace syscall restart and arg modification

2015-10-07 11:34:07 +02:00

raw_syscall_helper_32.S

selftests/x86: Add a test for ptrace syscall restart and arg modification

2015-10-07 11:34:07 +02:00

sigreturn.c

x86, selftests: Add sigreturn selftest

2015-04-08 08:22:02 +02:00

single_step_syscall.c

x86, selftests: Add single_step_syscall test

2015-04-16 12:41:49 +02:00

syscall_arg_fault.c

x86/entry, selftests/x86: Add a test for 32-bit fast syscall arg faults

2015-07-07 10:58:30 +02:00

syscall_nt.c

selftests/x86: Add syscall_nt selftest

2015-08-18 09:43:38 +02:00

sysret_ss_attrs.c

x86, selftests: Add a test for the "sysret_ss_attrs" bug

2015-05-08 13:33:59 +02:00

test_FCMOV.c

x86/fpu/math-emu, selftests: Add tests for FCMOV and FCOMI insns

2015-09-20 10:19:52 +02:00

test_FCOMI.c

x86/fpu/math-emu, selftests: Add tests for FCMOV and FCOMI insns

2015-09-20 10:19:52 +02:00

test_FISTTP.c

x86/fpu/math-emu, selftests: Add test for FISTTP instructions

2015-09-20 16:19:01 +02:00

test_syscall_vdso.c

x86/asm/entry/32, selftests: Add 'test_syscall_vdso' test

2015-09-18 09:40:48 +02:00

thunks_32.S

x86/asm/entry/32, selftests: Add 'test_syscall_vdso' test

2015-09-18 09:40:48 +02:00

thunks.S

x86, selftests: Add a test for the "sysret_ss_attrs" bug

2015-05-08 13:33:59 +02:00

trivial_32bit_program.c

selftests, x86: Rework x86 target architecture detection

2015-05-12 20:02:40 -06:00

trivial_64bit_program.c

selftest, x86: fix incorrect comment

2015-05-26 15:58:41 -06:00

unwind_vdso.c

selftests/x86: Style fixes for the 'unwind_vdso' test

2015-10-14 16:56:28 +02:00

vdso_restorer.c

selftests/x86: Test __kernel_sigreturn and __kernel_rt_sigreturn

2016-01-13 10:34:40 +01:00