On 6/9/20 11:07 AM, Miklos Szeredi wrote:
While running xfstests[1] on overlayfs I get the following: BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. [...] Then when doing cat /proc/lockdep_chains I get this Oops: BUG: unable to handle page fault for address: ffffffff83b36da8 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 2262067 P4D 2262067 PUD 2263063 PMD 0
Thanks for the information. There are some corruption in the lock chain data some garbage shows up in your lockdep_chains. I will try to reproduce the error to in order to figure out where the bug is.
Thanks, Longman
