This is a note to let you know that I've just added the patch titled

selftests, x86, protection_keys: fix wrong offset in siginfo

to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: selftests-x86-protection_keys-fix-wrong-offset-in-siginfo.patch and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From 2195bff041486eb7fcceaf058acaedcd057efbdc Mon Sep 17 00:00:00 2001

From: Dave Hansen dave.hansen@linux.intel.com Date: Fri, 3 Feb 2017 10:51:35 -0800 Subject: selftests, x86, protection_keys: fix wrong offset in siginfo

From: Dave Hansen dave.hansen@linux.intel.com

commit 2195bff041486eb7fcceaf058acaedcd057efbdc upstream.

The siginfo contains a bunch of information about the fault. For protection keys, it tells us which protection key's permissions were violated.

The wrong offset in here leads to reading garbage and thus failures in the tests.

We should probably eventually move this over to using the kernel's headers defining the siginfo instead of a hard-coded offset. But, for now, just do the simplest fix.

Signed-off-by: Dave Hansen dave.hansen@linux.intel.com Cc: Ingo Molnar mingo@kernel.org Cc: Shuah Khan shuahkh@osg.samsung.com Signed-off-by: Shuah Khan shuahkh@osg.samsung.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- tools/testing/selftests/x86/protection_keys.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/tools/testing/selftests/x86/protection_keys.c +++ b/tools/testing/selftests/x86/protection_keys.c @@ -192,7 +192,7 @@ void lots_o_noops_around_write(int *writ #define SYS_pkey_alloc 381 #define SYS_pkey_free 382 #define REG_IP_IDX REG_EIP -#define si_pkey_offset 0x18 +#define si_pkey_offset 0x14 #else #define SYS_mprotect_key 329 #define SYS_pkey_alloc 330

Patches currently in stable-queue which might be from dave.hansen@linux.intel.com are

queue-4.9/x86-pkeys-selftests-rename-si_pkey-to-siginfo_pkey.patch queue-4.9/signal-testing-don-t-look-for-__si_fault-in-userspace.patch queue-4.9/selftests-x86-protection_keys-fix-wrong-offset-in-siginfo.patch