On Thu, Jul 08 2021 at 15:37, Thomas Gleixner wrote:
> The recent commit which fixed the entry/exit mismatch on failed 32-bit
> syscalls got the ordering vs. instrumentation_end() wrong, which makes
> objtool complain about tracer invocation in an instrumentation disabled
> region.
>
> Stick the offending local_irq_disable() into the instrumentation enabled
> region so objtool stops complaining.
>
> Fixes: 5d5675df792f ("x86/entry: Fix entry/exit mismatch on failed fast 32-bit syscalls")
Bah. I looked at the wrong branch. It's fixed already in Linus tree:
commit 240001d4e3041832e8a2654adc3ccf1683132b92
Author: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Date: Mon Jun 21 13:12:34 2021 +0200
x86/entry: Fix noinstr fail in __do_fast_syscall_32()
Though that lacks a CC: stable tag, which would have been appropriate
because 5d5675df792f ("x86/entry: Fix entry/exit mismatch on failed fast
32-bit syscalls") has been backported.
Can the stable folks pick this up please?
Thanks,
tglx
