Running v4.11-8118-g4ac4d584886a, I see this during boot on one of my
test machines during boot as it tries to mount two nfs mounts.
initcall init_nfs_v4+0x0/0x33 [nfsv4] returned 0 after 28480 usecs
calling init_kerberos_module+0x0/0x1000 [rpcsec_gss_krb5] @ 721
initcall init_kerberos_module+0x0/0x1000 [rpcsec_gss_krb5] returned 0 after 61 usecs
NFS: nfs4_discover_server_trunking unhandled error -512. Exiting with error EIO
NFS: nfs4_discover_server_trunking unhandled error -512. Exiting with error EIO
Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
CPU: 1 PID: 121 Comm: kworker/1:2 Not tainted 4.11.0-think+ #7
Workqueue: rpciod rpc_async_schedule [sunrpc]
task: ffff8804fd8c0040 task.stack: ffffc9000036c000
RIP: 0010:memcpy_erms+0x6/0x10
RSP: 0018:ffffc9000036faf8 EFLAGS: 00010282
RAX: ffff8804efc8c308 RBX: 0000000000000008 RCX: 0000000000000008
RDX: 0000000000000008 RSI: ffffc90000e2b940 RDI: ffff8804efc8c308
RBP: ffffc9000036fb20 R08: ffff8804ef1fbc28 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000002 R14: ffff8804efc8c308 R15: ffff8804efc8c2f8
FS: 0000000000000000(0000) GS:ffff880507a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90000e2b940 CR3: 00000004faf74000 CR4: 00000000001406e0
Call Trace:
? xdr_encode_opaque_fixed+0x37/0x70 [sunrpc]
? encode_exchange_id+0x220/0x220 [nfsv4]
encode_nfs4_verifier+0x2c/0x40 [nfsv4]
encode_exchange_id+0x53/0x220 [nfsv4]
? init_object+0x69/0xa0
? mark_held_locks+0x76/0xa0
? xdr_reserve_space+0x1c/0x140 [sunrpc]
? encode_exchange_id+0x220/0x220 [nfsv4]
nfs4_xdr_enc_exchange_id+0x7e/0xb0 [nfsv4]
rpcauth_wrap_req+0xa7/0xe0 [sunrpc]
call_transmit+0x1a5/0x2b0 [sunrpc]
? call_decode+0x810/0x810 [sunrpc]
? call_decode+0x810/0x810 [sunrpc]
__rpc_execute+0xb4/0x5d0 [sunrpc]
? process_one_work+0x1c2/0x6c0
rpc_async_schedule+0x12/0x20 [sunrpc]
process_one_work+0x24d/0x6c0
worker_thread+0x4e/0x3b0
kthread+0x117/0x150
? process_one_work+0x6c0/0x6c0
? kthread_create_on_node+0x70/0x70
ret_from_fork+0x2e/0x40
Code: 90 90 90 90 90 eb 1e 0f 1f 00 48 89 f8 48 89 d1 48 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 c3 66 0f 1f 44 00 00 48 89 f8 48 89 d1 <f3> a4 c3 0f 1f 80 00 00 00 00 48 89 f8 48 83 fa 20 72 7e 40 38
RIP: memcpy_erms+0x6/0x10 RSP: ffffc9000036faf8
CR2: ffffc90000e2b940