regression on aarch64? panic on boot

[Klaus Jensen]

On Jan 17 13:11, Martin Wilck wrote:
> On Tue, 2023-01-17 at 07:37 +0100, Christoph Hellwig wrote:
> > On Tue, Jan 17, 2023 at 07:31:59AM +0100, Klaus Jensen wrote:
> > > Good morning Christoph,
> > > 
> > > Yep, the above works.
> > 
> > Context for the newly added: This is dropping the newly added
> > PROBE_PREFER_ASYNCHRONOUS in nvme, which causes Klaus' arm64 (but not
> > other boot tests) to fail.  Any idea what could be going wrong there
> > probably in userspace?
> 
> If this is an aarch64 userspace issue, maybe related to
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107678 ?
> 
> That bug causes segfaults of user space programs if for some reason the
> unwind code is invoked. It happens only if libgcc_s.so is compiled with
> gcc 13, and the pauth CPU feature is enabled in qemu.
> 
> Martin
> 

I just observed the same panic on qemu emulated ppc64 as well. It's
pretty rare, maybe 1 in 20. 'rootwait' or removing the the prefer
asynchronous probe fixes it as well.
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