commit 02e425668f5c9deb42787d10001a3b605993ad15
author Andy Lutomirski <luto@kernel.org> Wed Oct 03 16:23:49 2018 -0700
committer Ingo Molnar <mingo@kernel.org> Thu Oct 04 08:17:50 2018 +0200
tree 4694f40f6acceb4c1715cc8b9e1b08ee19eaf014
parent 88296bd42b4e9d24e138a68b337c235b5cac89a7

x86/vdso: Fix vDSO syscall fallback asm constraint regression

When I added the missing memory outputs, I failed to update the
index of the first argument (ebx) on 32-bit builds, which broke the
fallbacks.  Somehow I must have screwed up my testing or gotten
lucky.

Add another test to cover gettimeofday() as well.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Fixes: 715bd9d12f84 ("x86/vdso: Fix asm constraints on vDSO syscall fallbacks")
Link: http://lkml.kernel.org/r/21bd45ab04b6d838278fa5bebfa9163eceffa13c.1538608971.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>