On Tue 17-04-18 16:15:07, Pavlos Parissis wrote: > On 17/04/2018 04:02 μμ, Jan Kara wrote: > > On Tue 17-04-18 12:39:32, Pavlos Parissis wrote: > >> In one of our production servers where we run kernel version 4.14.32, I noticed > >> the following: > > > > OK, I was looking into this for some time and couldn't find a problem in > > 4.14.32 code. Can you try running a kernel with CONFIG_DEBUG_SLAB and > > CONFIG_DEBUG_PAGEALLOC enabled to hopefully catch the problem earlier? > > Thanks! > > > > I can certainly do that, but I can't reproduce that specific crash. So, > it may take days before we get a similar crash. Having said that, the > soft lockup issue, which I mentioned in another thread, happens once per > day, so I hope running a kernel with those debug settings will help you. Yes, the hope is debug checks will trigger faster than the actual data corruption (or softlockup) you've hit. Honza -- Jan Kara <jack@xxxxxxxx> SUSE Labs, CR