Created attachment 288395 [details] dmesg output Mounting a NFS volume and then performing a write() operation on any file causes this panic to occur. The write() of course never completes, and the calling process hangs in an unkillable state. The mount options are: rw,vers=4.1,fsc,async,hard,rsize=1048576,wsize=1048576,timeo=900,retrans=5,_netdev,auto,x-systemd.automount,x-systemd.device-timeout=10,timeo=14,x-systemd.requires=network-online.target,nodev,nosuid,noatime,nodiratime See dmesg output attached
Maybe not too surprisingly, removing the fsc mount option causes the panic to no longer happen, but of course with degraded performance.
I misread the stack trace, apparently the crash happens with a write() and then doing a read() shortly after
This seems to be a duplicate of bug 208883 where a fix was proposed