]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
x86, selftests: Add sigreturn selftest
authorAndy Lutomirski <luto@kernel.org>
Tue, 7 Apr 2015 06:11:06 +0000 (23:11 -0700)
committerIngo Molnar <mingo@kernel.org>
Wed, 8 Apr 2015 06:22:02 +0000 (08:22 +0200)
commit3f705dfdf85a6416f5f12e52b7610144a99cbedc
tree02811abaaa5b30ad49d932376a4fa8b8b7917797
parent69df353ff305805fc16082d0c5bfa6e20fa8b863
x86, selftests: Add sigreturn selftest

This is my sigreturn test, added mostly unchanged from its old
home. It exercises the sigreturn(2) syscall, specifically
focusing on its interactions with various IRET corner cases.

It tests for correct behavior in several areas that were
historically dangerously buggy. For example, it exercises espfix
on kernels of both bitnesses under various conditions, and it
contains testcases for several now-fixed bugs in IRET error
handling.

If you run it on older kernels without the fixes, your system will
crash. It probably won't eat your data in the process.

There is no released kernel on which the sigreturn_64 test will
pass, but it passes on tip:x86/asm.

I plan to switch to lib.mk for Linux 4.2.

I'm not using the ksft_ helpers at all yet.  I can do that later.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Acked-by: Shuah Khan <shuahkh@osg.samsung.com>
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: Denys Vlasenko <vda.linux@googlemail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Shuah Khan <shuah.kh@samsung.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/89d10b76b92c7202d8123654dc8d36701c017b3d.1428386971.git.luto@kernel.org
[ Fixed empty format string GCC build warning in trivial_32bit_program.c ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
tools/testing/selftests/Makefile
tools/testing/selftests/x86/.gitignore [new file with mode: 0644]
tools/testing/selftests/x86/Makefile [new file with mode: 0644]
tools/testing/selftests/x86/run_x86_tests.sh [new file with mode: 0644]
tools/testing/selftests/x86/sigreturn.c [new file with mode: 0644]
tools/testing/selftests/x86/trivial_32bit_program.c [new file with mode: 0644]