Hi, On Thu, May 28, 2020 at 04:42:09PM +0800, kernel test robot wrote: > Greetings, > > 0day kernel testing robot got the below dmesg and the first bad commit is > > https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > > commit 0604a4fd53020a98f029e7fd56d896a136ff2357 > Author: Joerg Roedel <jroedel@xxxxxxx> > AuthorDate: Sat May 16 15:19:37 2020 +1000 > Commit: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> > CommitDate: Sat May 16 15:19:37 2020 +1000 Tried to reproduce this today and found another bug in KVM along the way. But anyway, I wasn't able to reproduce this on latest linux-next. By looking at the exact commit-id reported above, I found that this report is a false-positive. Above commit-id refers to an old version of the patch-set which does not call arch_sync_kernel_mappings() in map_kernel_range_noflush(). So the oops comes from missing synchronization there. But that is fixed already in latest next/master. Regards, Joerg