On Mon, Nov 12, 2018 at 09:17:16PM +0000, Trond Myklebust wrote: > On Mon, 2018-11-12 at 13:24 -0500, bfields@xxxxxxxxxxxx wrote: > > On Mon, Nov 12, 2018 at 05:59:33PM +0000, Trond Myklebust wrote: > > > On Sat, 2018-11-10 at 16:49 -0500, Bruce Fields wrote: > > > > Looks like it's the fault of > > > > > > > > 07d02a67b7faae "SUNRPC: Simplify lookup code" > > > > > > I'm having trouble reproducing this bug. I've tried both cthon and > > > xfstests in a loop, so far without success (both NFSv3 and v4.1, > > > but > > > only sec=sys). Is there anything else you're doing that I might > > > try? > > > > > > e.g. Are you running multiple workloads in parallel? Different > > > users?.. > > > > Nothing that interesting. Currently it's connectathon over v4, v3, > > v4/krb5, v3/krb5, v4/krb5i, v4/krb5p, v4.1, v4.1/krb5, but just > > serially > > one after the other. Then some pynfs tests (which bypass the > > client), > > then xfstests over v4.2/sys. And also a few one-off locking tests of > > my > > own that probably aren't a factor here. > > > > (Hah, I just realized I was mounting with vers=4 and assuming that > > meant > > 4.0, but actually it's changed over time depending on the defaults, > > so > > currently those "v4" runs are actually all 4.2. Gah.) > > Are you perhaps both using RPCSEC_GSS w/ integrity checking for your > EXCHANGE_ID authentication? The client will attempt to use that by > default if rpc.gssd is running. Yes, in addition to the krb5i mount I'd expect the sys/krb5/krb5p mounts are using krb5i for EXCHANGE_ID. > I ask because I think the issue might be with RPCSEC_GSS, specifically > with the RPCSEC_GSS context destroy code, hence the 2 patches that I > just sent out. Looks like my tests pass after applying those two patches. --b.
