On Sun, Jul 23, 2023 at 11:25:29AM +0200, Linux regression tracking (Thorsten Leemhuis) wrote: > On 23.07.23 11:17, Thorsten Leemhuis wrote: > > On 21.07.23 18:04, Greg Kroah-Hartman wrote: > >> From: Igor Mammedov <imammedo@xxxxxxxxxx> > >> > >> commit 40613da52b13fb21c5566f10b287e0ca8c12c4e9 upstream. > >> > >> When using ACPI PCI hotplug, hotplugging a device with large BARs may fail > >> if bridge windows programmed by firmware are not large enough. > >> > >> [...] > > > > Greg, just so you know, that patch (which is also queued for 6.1 and > > 5.15) is known to cause a regression in 6.5-rc. To quote > > https://lore.kernel.org/all/11fc981c-af49-ce64-6b43-3e282728bd1a@xxxxxxxxx/ > > > > ``` > > 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 output. > > > > 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. > > ``` > > Forgot to mention the reply from Bjorn: > > ``` > 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. > ``` Thanks, I've dropped this from the stable queues now. greg k-h
