• Andy Lutomirski's avatar
    x86, selftests: Add sigreturn selftest · 3f705dfd
    Andy Lutomirski authored
    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: default avatarAndy Lutomirski <luto@kernel.org>
    Acked-by: default avatarShuah 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: default avatarIngo Molnar <mingo@kernel.org>
    3f705dfd
Makefile 1.21 KB