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

..

breakpoints

selftests: breakpoint: Actually build it

2015-11-03 16:55:08 -07:00

capabilities

selftests/capabilities: Add tests for capability evolution

2015-09-04 16:54:41 -07:00

cpu-hotplug

selftests: change cpu on-off-test.sh name to be unique

2015-04-01 10:32:52 -06:00

efivarfs

selftests: add .gitignore for efivarfs

2015-10-15 20:00:32 -06:00

exec

selftests: exec: revert to default emit rule

2015-09-14 16:45:05 -06:00

firmware

selftests: firmware: skip timeout checks for kernels without user mode helper

2015-08-05 17:07:19 -07:00

ftrace

selftests: kprobe: Choose an always-defined function to probe

2015-11-03 16:54:51 -07:00

futex

tools:testing/selftests: fix typo in futex/README

2015-11-16 19:22:49 -07:00

ipc

selftest/ipc: enable cross compilation

2015-04-02 12:41:52 -06:00

kcmp

selftests: Set CC using CROSS_COMPILE once in lib.mk

2015-03-19 15:16:51 -06:00

lib

selftests: run lib/test_printf module

2015-11-06 17:50:42 -08:00

membarrier

membarrier: clean up selftest

2015-09-22 15:09:53 -07:00

memfd

selftests: Make scripts executable

2015-11-03 16:54:57 -07:00

memory-hotplug

selftests: Change memory on-off-test.sh name to be unique

2015-04-01 10:33:02 -06:00

mount

selftests/mount: output WARN messages when mount test skipped

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

mqueue

selftests: Add missing #include directives

2015-11-03 16:53:53 -07:00

net

selftests/net: test extended BPF fanout mode

2015-08-17 14:22:48 -07:00

powerpc

Merge tag 'powerpc-4.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2015-11-05 23:38:43 -08:00

pstore

selftests/pstore: add pstore test scripts going with reboot

2015-10-15 20:00:32 -06:00

ptrace

selftests: Introduce minimal shared logic for running tests

2015-03-13 15:13:40 -06:00

rcutorture

torture: Place console.log files correctly from the get-go

2015-12-05 17:58:34 -08:00

seccomp

selftests/seccomp: Get page size from sysconf

2015-11-18 16:56:53 -07:00

size

selftests: Set CC using CROSS_COMPILE once in lib.mk

2015-03-19 15:16:51 -06:00

static_keys

selftests: Make scripts executable

2015-11-03 16:54:57 -07:00

sysctl

selftests: Add install target

2015-03-13 15:21:56 -06:00

timers

Merge tag 'linux-kselftest-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

2015-11-10 20:46:45 -08:00

user

selftests: Introduce minimal shared logic for running tests

2015-03-13 15:13:40 -06:00

vm

Merge branch 'akpm' (patches from Andrew)

2015-11-10 21:14:23 -08:00

x86

selftests/x86: Test __kernel_sigreturn and __kernel_rt_sigreturn

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

zram

seltests/zram: fix syntax error

2015-09-14 16:40:57 -06:00

gen_kselftest_tar.sh

selftests: Add tool to generate kselftest tar archive

2015-03-24 08:43:19 -06:00

kselftest_install.sh

selftests: Add kselftest install tool

2015-03-24 08:43:05 -06:00

kselftest.h

kselftest: Add exit code defines

2015-05-26 15:58:08 -06:00

lib.mk

selftests: change install command to rsync

2015-09-14 16:43:51 -06:00

Makefile

Merge tag 'linux-kselftest-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

2015-11-10 20:46:45 -08:00