On Mon, Oct 28, 2019 at 11:40:19AM -0700, Bjorn Andersson wrote:
On Mon 28 Oct 10:48 PDT 2019, Mark Brown wrote:
On Mon, Oct 28, 2019 at 08:03:08AM -0700, kernelci.org bot wrote:
Today's -next (anf Friday's) fails to boot on db820c:
defconfig: gcc-8: apq8096-db820c: 1 failed lab
It looks like it deadlocks somewhere, the last things in the log are a failure to start ufshcd-qcom and then an RCU stall some time later:
db820c has been failing intermittently for a while now, it seems that booting with kpti enabled causes something to go wrong. There are nothing strange in the kernel logs and ftrace seems to indicate that all the CPUs are idling nicely.
Oh dear. Adding Catalin and Will. Is it definitely KPTI that's triggering stuff? It did turn up some bugs on other systems, though it's a bit strange it's only manifesting in KernelCI...