Hi- > On Aug 12, 2020, at 5:24 AM, sea you <seayou@xxxxxxxxx> wrote: > > After upgrading the kernel to 5.4.0-39-generic, the very same happened again. > You could find more information here on LaunchPad > https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe/+bug/1885265 > > Anyone else experienced this? This definitely looks like a bug to me > at this point. Thanks for the bug report. This appears to be a distributor's kernel and ZFS (which is an out- of-tree filesystem) is the backend. The distributor will have to drill down on this issue with a recent upstream kernel and a native filesystem to demonstrate we have an upstream bug. > On Thu, May 14, 2020 at 12:26 PM sea you <seayou@xxxxxxxxx> wrote: >> >> Hi all, >> >> Today we've seen a kernel panic that looks like related to delegations >> and laundromat >> >> ... >> [1388051.959652] Call Trace: >> [1388051.959984] unhash_delegation_locked+0x39/0xa0 [nfsd] >> [1388051.960631] laundromat_main+0x235/0x5a0 [nfsd] >> [1388051.961234] process_one_work+0x1fd/0x3f0 >> [1388051.961803] worker_thread+0x34/0x410 >> [1388051.962281] kthread+0x121/0x140 >> [1388051.962698] ? process_one_work+0x3f0/0x3f0 >> [1388051.963210] ? kthread_park+0xb0/0xb0 >> [1388051.963690] ret_from_fork+0x22/0x40 >> .... >> >> In the link below you'll find what has been captured from the console. >> >> https://pastebin.com/raw/CdpMfUAK >> >> I couldn't really find any reference to this in the mailing list >> history so I assume we might have hit a bug that is unknown so far. >> >> Best regards, >> Doma -- Chuck Lever
