[PATCH 4/4] selftests: Add test for sigaltstack(SS_ONSTACK|SS_AUTODISARM)

This patch adds the test case for SS_AUTODISARM flag. The test-case tries to set SS_AUTODISARM flag and checks if the nested signal corrupts the stack after swapcontext(). CC: Shuah Khan CC: linux-kernel@vger.kernel.org CC: linux-...@vger.kernel.org CC: Andy Lutomirski CC: Ingo Molnar CC: Oleg

[PATCH 4/4] selftests: Add test for sigaltstack(SS_ONSTACK|SS_AUTODISARM)

This patch adds the test case for SS_AUTODISARM flag. The test-case tries to set SS_AUTODISARM flag and checks if the nested signal corrupts the stack after swapcontext(). CC: Shuah Khan CC: linux-kernel@vger.kernel.org CC: linux-...@vger.kernel.org CC: Andy Lutomirski Signed-off-by: Stas Serge

[PATCH 4/4] selftests: Add test for sigaltstack(SS_ONSTACK|SS_AUTODISARM)

This patch adds the test case for SS_AUTODISARM flag. The test-case tries to set SS_AUTODISARM flag and checks if the nested signal corrupts the stack after swapcontext(). CC: Shuah Khan CC: linux-kernel@vger.kernel.org CC: linux-...@vger.kernel.org CC: Andy Lutomirski Signed-off-by: Stas Serge

[PATCH 4/4] selftests: Add test for sigaltstack(SS_ONSTACK | SS_AUTODISARM)

sigaltstack needs to be disabled before the signal handler can safely use swapcontext(). This patch adds the SS_AUTODISARM flag. This flag disables the sigaltstack when entering the signal handler. When returning from signal handler, the sigaltstack is restored by uc_stack. CC: Shuah Khan CC: lin