Guenter Roeck <linux@xxxxxxxxxxxx> writes: > On Wed, Sep 02, 2020 at 05:12:22PM +0530, Aneesh Kumar K.V wrote: >> pte_clear_tests operate on an existing pte entry. Make sure that >> is not a none pte entry. >> >> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxx> > > This patch causes all riscv64 images to crash. Reverting it > as well as the follow-up patch fixes the problem, but there are > still several warning messages starting with > BUG kmem_cache (Not tainted): Freechain corrupt > I did not try to track down this other problem. > > A detailed crash log is at > https://kerneltests.org/builders/qemu-riscv64-next/builds/523/steps/qemubuildcommand/logs/stdio > > Bisect log is attached. https://lore.kernel.org/linux-mm/87zh5wx51b.fsf@xxxxxxxxxxxxx This was mentioned earlier. The RANDOM_OR_VALUE used is interacting with some of the riscv page table accessors. -aneesh
