From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:58304 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751052AbeBTK0H (ORCPT ); Tue, 20 Feb 2018 05:26:07 -0500 Subject: Patch "selftests/x86: Do not rely on "int $0x80" in test_mremap_vdso.c" has been added to the 4.14-stable tree To: linux@dominikbrodowski.net, dsafonov@virtuozzo.com, gregkh@linuxfoundation.org, luto@kernel.org, mingo@kernel.org, peterz@infradead.org, tglx@linutronix.de, torvalds@linux-foundation.org Cc: , From: Date: Tue, 20 Feb 2018 11:25:55 +0100 Message-ID: <15191223554194@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled selftests/x86: Do not rely on "int $0x80" in test_mremap_vdso.c to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: selftests-x86-do-not-rely-on-int-0x80-in-test_mremap_vdso.c.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 2cbc0d66de0480449c75636f55697c7ff3af61fc Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Sun, 11 Feb 2018 12:10:11 +0100 Subject: selftests/x86: Do not rely on "int $0x80" in test_mremap_vdso.c From: Dominik Brodowski commit 2cbc0d66de0480449c75636f55697c7ff3af61fc upstream. On 64-bit builds, we should not rely on "int $0x80" working (it only does if CONFIG_IA32_EMULATION=y is enabled). Without this patch, the move test may succeed, but the "int $0x80" causes a segfault, resulting in a false negative output of this self-test. Signed-off-by: Dominik Brodowski Cc: Andy Lutomirski Cc: Dmitry Safonov Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-kselftest@vger.kernel.org Cc: shuah@kernel.org Link: http://lkml.kernel.org/r/20180211111013.16888-4-linux@dominikbrodowski.net Signed-off-by: Ingo Molnar Signed-off-by: Greg Kroah-Hartman --- tools/testing/selftests/x86/test_mremap_vdso.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/tools/testing/selftests/x86/test_mremap_vdso.c +++ b/tools/testing/selftests/x86/test_mremap_vdso.c @@ -90,8 +90,12 @@ int main(int argc, char **argv, char **e vdso_size += PAGE_SIZE; } +#ifdef __i386__ /* Glibc is likely to explode now - exit with raw syscall */ asm volatile ("int $0x80" : : "a" (__NR_exit), "b" (!!ret)); +#else /* __x86_64__ */ + syscall(SYS_exit, ret); +#endif } else { int status; Patches currently in stable-queue which might be from linux@dominikbrodowski.net are queue-4.14/x86-entry-64-interleave-xor-register-clearing-with-push-instructions.patch queue-4.14/x86-entry-64-merge-the-pop_c_regs-and-pop_extra_regs-macros-into-a-single-pop_regs-macro.patch queue-4.14/x86-entry-64-remove-the-unused-icebp-macro.patch queue-4.14/x86-entry-64-use-push_and_clean_regs-in-more-cases.patch queue-4.14/selftests-x86-disable-tests-requiring-32-bit-support-on-pure-64-bit-systems.patch queue-4.14/x86-entry-64-fix-paranoid_entry-frame-pointer-warning.patch queue-4.14/x86-entry-64-merge-save_c_regs-and-save_extra_regs-remove-unused-extensions.patch queue-4.14/selftests-x86-do-not-rely-on-int-0x80-in-single_step_syscall.c.patch queue-4.14/selftests-x86-fix-vdso-selftest-segfault-for-vsyscall-none.patch queue-4.14/x86-entry-64-indent-push_and_clear_regs-and-pop_regs-properly.patch queue-4.14/selftests-x86-clean-up-and-document-sscanf-usage.patch queue-4.14/selftests-x86-do-not-rely-on-int-0x80-in-test_mremap_vdso.c.patch queue-4.14/x86-entry-64-get-rid-of-the-alloc_pt_gpregs_on_stack-and-save_and_clear_regs-macros.patch queue-4.14/x86-entry-64-introduce-the-push_and_clean_regs-macro.patch