On Mon, Jun 27, 2022 at 11:09:57PM -0700, Christoph Hellwig wrote: > On Tue, Jun 28, 2022 at 08:07:52AM +0200, Greg Kroah-Hartman wrote: > > On Tue, Jun 28, 2022 at 04:03:55AM +0000, yangx.jy@xxxxxxxxxxx wrote: > > > Hi everyone, > > > > > > Running blktests nvme/032 on kernel v5.19-rc2+ which enables > > > CONFIG_LOCKDEP and CONFIG_PROVE_LOCKING triggered the below WARNING. > > > > What was happening when this trace was created? It looks like you were > > manually removing a PCI device from the system through sysfs? Why would > > blktests do that? > > To test how the block layer copes with the fact that the underlying > device goes away. Ah, so it's a fake PCI device, or is it a real one? Anyway, it's a valid thing to do, I'll look at the report in a bit...