Re: Kernel 6.5-rc2: system crash on suspend bisected

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Michael S. Tsirkin wrote:
On Thu, Jul 20, 2023 at 03:21:10PM -0500, Bjorn Helgaas wrote:
[+cc regressions list]

On Wed, Jul 19, 2023 at 11:36:51PM -0400, Woody Suwalski wrote:
Laptop shows a kernel crash trace after a first suspend to ram, on a second
attempt to suspend it becomes frozen solid. This is 100% repeatable with a
6.5-rc2 kernel, not happening with a 6.4 kernel - see the attached dmesg

I have bisected the kernel uilds and it points to :
[40613da52b13fb21c5566f10b287e0ca8c12c4e9] PCI: acpiphp: Reassign resources
on bridge if necessary

Reversing this patch seems to fix the kernel crash problem on my laptop.
Thank you very much for all your work debugging, bisecting, and
reporting this!  This is incredibly helpful.

Original report, including complete dmesg logs for both v6.4 and

I queued up a revert of 40613da52b13 ("PCI: acpiphp: Reassign
resources on bridge if necessary") (on my for-linus branch for v6.5).

It looks like a NULL pointer dereference; hopefully the fix is obvious
and I can drop the revert and replace it with the fix.

Patch on list now:
Confirm works OK.
Tested-by: Woody Suwalski <terraluna977@xxxxxxxxx>

Thanks, Woody

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