Re: [GIT PULL] arm64 fixes for 6.13-rc3

From: Sasha Levin
Date: Mon Dec 16 2024 - 10:00:20 EST


On Mon, Dec 16, 2024 at 10:02:34AM +0000, Mark Rutland wrote:
On Sun, Dec 15, 2024 at 12:06:19PM -0500, Sasha Levin wrote:
On Fri, Dec 13, 2024 at 05:41:38PM +0000, Catalin Marinas wrote:
> - arm64 stacktrace: address some fallout from the recent changes to
> unwinding across exception boundaries

Hi Catalin, Mark,

It seems that kselftests can hit a warning that was addressed in the
commit above:

I assume you're referring to commit:

32ed1205682ec42a ("arm64: stacktrace: Skip reporting LR at exception boundaries")

... ?

I was actually thinking 65ac33bed8b9 ("arm64: stacktrace: Don't WARN
when unwinding other tasks"), sorry for the confusion

That was intended to fix this specific issue, as explained in the commit
message (with a very similar splat from running the ftrace kselftests).

Am I missing something? i.e. are you saying it *doesn't* fix that?

Right - LKFT is able to trigger the warning I copied on Linus's tree.

--
Thanks,
Sasha