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...
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