nfs secure and kernel 5.11.0

[isanaud]

Since kernel update to 5.11.0-27, nfs is not mounted. I get "mount.nfs: access denied by server while mounting perso-env.univ-rennes1.fr:/homedir" error.

If I start with kernel 5.8.0-40 or 5.8.0-55 nfs works fine.

lsb_release -rd
Description: Ubuntu 20.04.3 LTS
Release: 20.04

Here is the log generated in syslog.log when I try to mount the nfs share :

Sep 7 16:58:01 localhost kernel: [ 3421.211160] NFS: parsing nfs mount option 'source'
Sep 7 16:58:01 localhost kernel: [ 3421.211169] NFS: parsing nfs mount option 'sec'
Sep 7 16:58:01 localhost kernel: [ 3421.211170] NFS: parsing sec=krb5i option
Sep 7 16:58:01 localhost kernel: [ 3421.211171] NFS: parsing nfs mount option 'rsize'
Sep 7 16:58:01 localhost kernel: [ 3421.211173] NFS: parsing nfs mount option 'wsize'
Sep 7 16:58:01 localhost kernel: [ 3421.211173] NFS: parsing nfs mount option 'vers'
Sep 7 16:58:01 localhost kernel: [ 3421.211174] NFS: parsing nfs mount option 'addr'
Sep 7 16:58:01 localhost kernel: [ 3421.211176] NFS: parsing nfs mount option 'clientaddr'
Sep 7 16:58:01 localhost kernel: [ 3421.211178] NFS: MNTPATH: '/homedir'
Sep 7 16:58:01 localhost kernel: [ 3421.211192] --> nfs4_try_get_tree()
Sep 7 16:58:01 localhost kernel: [ 3421.211217] NFS: get client cookie (0x00000000d9ee28bb/0x00000000acddf283)
Sep 7 16:58:01 localhost kernel: [ 3421.212538] nfs_callback_create_svc: service created
Sep 7 16:58:01 localhost kernel: [ 3421.212540] NFS: create per-net callback data; net=f0000098
Sep 7 16:58:01 localhost kernel: [ 3421.212596] nfs_callback_up: service started
Sep 7 16:58:01 localhost kernel: [ 3421.212597] NFS: nfs4_discover_server_trunking: testing 'perso-env.univ-rennes1.fr'
Sep 7 16:58:01 localhost kernel: [ 3421.370800] NFS: nfs4_discover_server_trunking: status = -93
Sep 7 16:58:01 localhost kernel: [ 3421.370807] --> nfs4_proc_destroy_session
Sep 7 16:58:01 localhost kernel: [ 3421.370817] nfs4_destroy_session Destroy backchannel for xprt 00000000b9884bbb
Sep 7 16:58:01 localhost kernel: [ 3421.370822] NFS: destroy per-net callback data; net=f0000098
Sep 7 16:58:01 localhost kernel: [ 3421.370852] nfs_callback_down: service destroyed
Sep 7 16:58:01 localhost kernel: [ 3421.370865] NFS: releasing client cookie (0x00000000d9ee28bb/0x00000000acddf283)
Sep 7 16:58:01 localhost kernel: [ 3421.370886] NFS4: Couldn't follow remote path
Sep 7 16:58:01 localhost kernel: [ 3421.370887] <-- nfs4_try_get_tree() = -93 [error]
Sep 7 16:58:01 localhost kernel: [ 3421.370948] NFS: parsing nfs mount option 'source'
Sep 7 16:58:01 localhost kernel: [ 3421.370951] NFS: parsing nfs mount option 'sec'
Sep 7 16:58:01 localhost kernel: [ 3421.370952] NFS: parsing sec=krb5i option
Sep 7 16:58:01 localhost kernel: [ 3421.370954] NFS: parsing nfs mount option 'rsize'
Sep 7 16:58:01 localhost kernel: [ 3421.370956] NFS: parsing nfs mount option 'wsize'
Sep 7 16:58:01 localhost kernel: [ 3421.370957] NFS: parsing nfs mount option 'vers'
Sep 7 16:58:01 localhost kernel: [ 3421.370959] NFS: parsing nfs mount option 'addr'
Sep 7 16:58:01 localhost kernel: [ 3421.370961] NFS: parsing nfs mount option 'clientaddr'
Sep 7 16:58:01 localhost kernel: [ 3421.370963] NFS: MNTPATH: '/homedir'
Sep 7 16:58:01 localhost kernel: [ 3421.370965] --> nfs4_try_get_tree()
Sep 7 16:58:01 localhost kernel: [ 3421.370970] NFS: get client cookie (0x0000000074a5c991/0x00000000acddf283)
Sep 7 16:58:01 localhost kernel: [ 3421.372032] nfs_callback_create_svc: service created
Sep 7 16:58:01 localhost kernel: [ 3421.372034] NFS: create per-net callback data; net=f0000098
Sep 7 16:58:01 localhost kernel: [ 3421.372081] nfs_callback_up: service started
Sep 7 16:58:01 localhost kernel: [ 3421.372083] NFS: nfs4_discover_server_trunking: testing 'perso-env.univ-rennes1.fr'
Sep 7 16:58:01 localhost kernel: [ 3421.542850] --> nfs4_proc_create_session clp=0000000074a5c991 session=0000000028a54e79
Sep 7 16:58:01 localhost kernel: [ 3421.542858] nfs4_init_channel_attrs: Fore Channel : max_rqst_sz=1049620 max_resp_sz=1049480 max_ops=8 max_reqs=64
Sep 7 16:58:01 localhost kernel: [ 3421.542862] nfs4_init_channel_attrs: Back Channel : max_rqst_sz=4096 max_resp_sz=4096 max_resp_sz_cached=0 max_ops=2 max_reqs=16
Sep 7 16:58:01 localhost kernel: [ 3421.543599] --> nfs4_setup_session_slot_tables
Sep 7 16:58:01 localhost kernel: [ 3421.543602] --> nfs4_realloc_slot_table: max_reqs=48, tbl->max_slots 0
Sep 7 16:58:01 localhost kernel: [ 3421.543610] nfs4_realloc_slot_table: tbl=00000000f0cd7226 slots=00000000580231a9 max_slots=48
Sep 7 16:58:01 localhost kernel: [ 3421.543613] <-- nfs4_realloc_slot_table: return 0
Sep 7 16:58:01 localhost kernel: [ 3421.543614] --> nfs4_realloc_slot_table: max_reqs=16, tbl->max_slots 0
Sep 7 16:58:01 localhost kernel: [ 3421.543617] nfs4_realloc_slot_table: tbl=000000000dfde2fa slots=00000000baa5c9be max_slots=16
Sep 7 16:58:01 localhost kernel: [ 3421.543619] <-- nfs4_realloc_slot_table: return 0
Sep 7 16:58:01 localhost kernel: [ 3421.543621] slot table setup returned 0
Sep 7 16:58:01 localhost kernel: [ 3421.543623] nfs4_proc_create_session client>seqid 102 sessionid 540311899:389113:101:12
Sep 7 16:58:01 localhost kernel: [ 3421.543627] <-- nfs4_proc_create_session
Sep 7 16:58:01 localhost kernel: [ 3421.543629] nfs4_schedule_state_renewal: requeueing work. Lease period = 5
Sep 7 16:58:01 localhost kernel: [ 3421.543658] --> nfs41_proc_reclaim_complete
Sep 7 16:58:01 localhost kernel: [ 3421.543663] NFS: nfs4_discover_server_trunking: status = 0
Sep 7 16:58:01 localhost kernel: [ 3421.543712] --> nfs41_call_sync_prepare data->seq_server 00000000159ac010
Sep 7 16:58:01 localhost kernel: [ 3421.543772] --> nfs4_alloc_slot used_slots=0000 highest_used=4294967295 max_slots=48
Sep 7 16:58:01 localhost kernel: [ 3421.543776] <-- nfs4_alloc_slot used_slots=0001 highest_used=0 slotid=0
Sep 7 16:58:01 localhost kernel: [ 3421.543782] encode_sequence: sessionid=540311899:389113:101:12 seqid=1 slotid=0 max_slotid=0 cache_this=0
Sep 7 16:58:01 localhost kernel: [ 3421.544244] --> nfs4_reclaim_complete_done
Sep 7 16:58:01 localhost kernel: [ 3421.544248] --> nfs4_alloc_slot used_slots=0001 highest_used=0 max_slots=48
Sep 7 16:58:01 localhost kernel: [ 3421.544251] <-- nfs4_alloc_slot used_slots=0003 highest_used=1 slotid=1
Sep 7 16:58:01 localhost kernel: [ 3421.544253] nfs4_free_slot: slotid 1 highest_used_slotid 0
Sep 7 16:58:01 localhost kernel: [ 3421.544255] nfs41_sequence_process: Error 0 free the slot
Sep 7 16:58:01 localhost kernel: [ 3421.544257] nfs4_free_slot: slotid 0 highest_used_slotid 4294967295
Sep 7 16:58:01 localhost kernel: [ 3421.544259] <-- nfs4_reclaim_complete_done
Sep 7 16:58:01 localhost kernel: [ 3421.544264] <-- nfs41_proc_reclaim_complete status=0
Sep 7 16:58:01 localhost kernel: [ 3421.544266] --> nfs4_alloc_slot used_slots=0000 highest_used=4294967295 max_slots=16
Sep 7 16:58:01 localhost kernel: [ 3421.544268] <-- nfs4_alloc_slot used_slots=0001 highest_used=0 slotid=0
Sep 7 16:58:01 localhost kernel: [ 3421.544270] nfs4_free_slot: slotid 0 highest_used_slotid 4294967295
Sep 7 16:58:01 localhost kernel: [ 3421.544272] --> nfs4_alloc_slot used_slots=0000 highest_used=4294967295 max_slots=48
Sep 7 16:58:01 localhost kernel: [ 3421.544274] <-- nfs4_alloc_slot used_slots=0001 highest_used=0 slotid=0
Sep 7 16:58:01 localhost kernel: [ 3421.544281] --> nfs4_alloc_slot used_slots=0001 highest_used=0 max_slots=48
Sep 7 16:58:01 localhost kernel: [ 3421.544283] <-- nfs4_alloc_slot used_slots=0003 highest_used=1 slotid=1
Sep 7 16:58:01 localhost kernel: [ 3421.544285] nfs4_free_slot: slotid 1 highest_used_slotid 0
Sep 7 16:58:01 localhost kernel: [ 3421.544294] --> nfs41_call_sync_prepare data->seq_server 00000000159ac010
Sep 7 16:58:01 localhost kernel: [ 3421.587850] nfs41_sequence_process: Error 1 free the slot
Sep 7 16:58:01 localhost kernel: [ 3421.587857] nfs4_free_slot: slotid 0 highest_used_slotid 4294967295
Sep 7 16:58:01 localhost kernel: [ 3421.587867] nfs4_get_rootfh: getroot error = 13
Sep 7 16:58:01 localhost kernel: [ 3421.587876] --> nfs4_proc_destroy_session
Sep 7 16:58:01 localhost kernel: [ 3421.588616] <-- nfs4_proc_destroy_session
Sep 7 16:58:01 localhost kernel: [ 3421.588619] nfs4_destroy_session Destroy backchannel for xprt 00000000a3a061bf
Sep 7 16:58:01 localhost kernel: [ 3421.589883] NFS: destroy per-net callback data; net=f0000098
Sep 7 16:58:01 localhost kernel: [ 3421.589919] nfs_callback_down: service destroyed
Sep 7 16:58:01 localhost kernel: [ 3421.589933] NFS: releasing client cookie (0x0000000074a5c991/0x00000000acddf283)
Sep 7 16:58:01 localhost kernel: [ 3421.589949] NFS4: Couldn't follow remote path
Sep 7 16:58:01 localhost kernel: [ 3421.589950] <-- nfs4_try_get_tree() = -13 [error]
Sep 7 16:58:01 localhost kernel: [ 3421.590015] NFS: parsing nfs mount option 'source'
Sep 7 16:58:01 localhost kernel: [ 3421.590019] NFS: parsing nfs mount option 'sec'
Sep 7 16:58:01 localhost kernel: [ 3421.590020] NFS: parsing sec=krb5i option
Sep 7 16:58:01 localhost kernel: [ 3421.590022] NFS: parsing nfs mount option 'rsize'
Sep 7 16:58:01 localhost kernel: [ 3421.590024] NFS: parsing nfs mount option 'wsize'
Sep 7 16:58:01 localhost kernel: [ 3421.590025] NFS: parsing nfs mount option 'vers'
Sep 7 16:58:01 localhost kernel: [ 3421.590027] NFS: parsing nfs mount option 'addr'
Sep 7 16:58:01 localhost kernel: [ 3421.590029] NFS: parsing nfs mount option 'clientaddr'
Sep 7 16:58:01 localhost kernel: [ 3421.590031] NFS: MNTPATH: '/homedir'
Sep 7 16:58:01 localhost kernel: [ 3421.590033] --> nfs4_try_get_tree()
Sep 7 16:58:01 localhost kernel: [ 3421.590039] NFS: get client cookie (0x00000000f4eac06d/0x00000000acddf283)
Sep 7 16:58:01 localhost kernel: [ 3421.592740] nfs_callback_create_svc: service created
Sep 7 16:58:01 localhost kernel: [ 3421.592743] NFS: create per-net callback data; net=f0000098
Sep 7 16:58:01 localhost kernel: [ 3421.592801] nfs_callback_up: service started
Sep 7 16:58:01 localhost kernel: [ 3421.592803] NFS: nfs4_discover_server_trunking: testing 'perso-env.univ-rennes1.fr'
Sep 7 16:58:01 localhost kernel: [ 3421.763844] --> nfs4_proc_create_session clp=00000000f4eac06d session=0000000074a5c991
Sep 7 16:58:01 localhost kernel: [ 3421.763851] nfs4_init_channel_attrs: Fore Channel : max_rqst_sz=1049620 max_resp_sz=1049480 max_ops=8 max_reqs=64
Sep 7 16:58:01 localhost kernel: [ 3421.763854] nfs4_init_channel_attrs: Back Channel : max_rqst_sz=4096 max_resp_sz=4096 max_resp_sz_cached=0 max_ops=2 max_reqs=16
Sep 7 16:58:01 localhost kernel: [ 3421.764640] --> nfs4_setup_session_slot_tables
Sep 7 16:58:01 localhost kernel: [ 3421.764676] --> nfs4_realloc_slot_table: max_reqs=48, tbl->max_slots 0
Sep 7 16:58:01 localhost kernel: [ 3421.764683] nfs4_realloc_slot_table: tbl=00000000fecc7110 slots=000000004bd43bc4 max_slots=48
Sep 7 16:58:01 localhost kernel: [ 3421.764686] <-- nfs4_realloc_slot_table: return 0
Sep 7 16:58:01 localhost kernel: [ 3421.764687] --> nfs4_realloc_slot_table: max_reqs=16, tbl->max_slots 0
Sep 7 16:58:01 localhost kernel: [ 3421.764690] nfs4_realloc_slot_table: tbl=0000000084108377 slots=00000000194a8fe3 max_slots=16
Sep 7 16:58:01 localhost kernel: [ 3421.764691] <-- nfs4_realloc_slot_table: return 0
Sep 7 16:58:01 localhost kernel: [ 3421.764692] slot table setup returned 0
Sep 7 16:58:01 localhost kernel: [ 3421.764693] nfs4_proc_create_session client>seqid 102 sessionid 540311901:389113:101:12
Sep 7 16:58:01 localhost kernel: [ 3421.764696] <-- nfs4_proc_create_session
Sep 7 16:58:01 localhost kernel: [ 3421.764698] nfs4_schedule_state_renewal: requeueing work. Lease period = 5
Sep 7 16:58:01 localhost kernel: [ 3421.764706] --> nfs41_proc_reclaim_complete
Sep 7 16:58:01 localhost kernel: [ 3421.764710] NFS: nfs4_discover_server_trunking: status = 0
Sep 7 16:58:01 localhost kernel: [ 3421.764747] --> nfs41_call_sync_prepare data->seq_server 00000000c8c952c7
Sep 7 16:58:01 localhost kernel: [ 3421.764802] --> nfs4_alloc_slot used_slots=0000 highest_used=4294967295 max_slots=48
Sep 7 16:58:01 localhost kernel: [ 3421.764805] <-- nfs4_alloc_slot used_slots=0001 highest_used=0 slotid=0
Sep 7 16:58:01 localhost kernel: [ 3421.764810] encode_sequence: sessionid=540311901:389113:101:12 seqid=1 slotid=0 max_slotid=0 cache_this=0
Sep 7 16:58:01 localhost kernel: [ 3421.765290] --> nfs4_reclaim_complete_done
Sep 7 16:58:01 localhost kernel: [ 3421.765302] --> nfs4_alloc_slot used_slots=0001 highest_used=0 max_slots=48
Sep 7 16:58:01 localhost kernel: [ 3421.765304] <-- nfs4_alloc_slot used_slots=0003 highest_used=1 slotid=1
Sep 7 16:58:01 localhost kernel: [ 3421.765306] nfs4_free_slot: slotid 1 highest_used_slotid 0
Sep 7 16:58:01 localhost kernel: [ 3421.765308] nfs41_sequence_process: Error 0 free the slot
Sep 7 16:58:01 localhost kernel: [ 3421.765309] nfs4_free_slot: slotid 0 highest_used_slotid 4294967295
Sep 7 16:58:01 localhost kernel: [ 3421.765330] <-- nfs4_reclaim_complete_done
Sep 7 16:58:01 localhost kernel: [ 3421.765334] <-- nfs41_proc_reclaim_complete status=0
Sep 7 16:58:01 localhost kernel: [ 3421.765336] --> nfs4_alloc_slot used_slots=0000 highest_used=4294967295 max_slots=16
Sep 7 16:58:01 localhost kernel: [ 3421.765338] <-- nfs4_alloc_slot used_slots=0001 highest_used=0 slotid=0
Sep 7 16:58:01 localhost kernel: [ 3421.765339] nfs4_free_slot: slotid 0 highest_used_slotid 4294967295
Sep 7 16:58:01 localhost kernel: [ 3421.765340] --> nfs4_alloc_slot used_slots=0000 highest_used=4294967295 max_slots=48
Sep 7 16:58:01 localhost kernel: [ 3421.765342] <-- nfs4_alloc_slot used_slots=0001 highest_used=0 slotid=0
Sep 7 16:58:01 localhost kernel: [ 3421.765346] --> nfs4_alloc_slot used_slots=0001 highest_used=0 max_slots=48
Sep 7 16:58:01 localhost kernel: [ 3421.765348] <-- nfs4_alloc_slot used_slots=0003 highest_used=1 slotid=1
Sep 7 16:58:01 localhost kernel: [ 3421.765349] nfs4_free_slot: slotid 1 highest_used_slotid 0
Sep 7 16:58:01 localhost kernel: [ 3421.765356] --> nfs41_call_sync_prepare data->seq_server 00000000c8c952c7
Sep 7 16:58:01 localhost kernel: [ 3421.806637] nfs41_sequence_process: Error 1 free the slot
Sep 7 16:58:01 localhost kernel: [ 3421.806644] nfs4_free_slot: slotid 0 highest_used_slotid 4294967295
Sep 7 16:58:01 localhost kernel: [ 3421.806654] nfs4_get_rootfh: getroot error = 13
Sep 7 16:58:01 localhost kernel: [ 3421.806663] --> nfs4_proc_destroy_session
Sep 7 16:58:01 localhost kernel: [ 3421.807382] <-- nfs4_proc_destroy_session
Sep 7 16:58:01 localhost kernel: [ 3421.807386] nfs4_destroy_session Destroy backchannel for xprt 00000000af9cbc69
Sep 7 16:58:01 localhost kernel: [ 3421.808551] NFS: destroy per-net callback data; net=f0000098
Sep 7 16:58:01 localhost kernel: [ 3421.808581] nfs_callback_down: service destroyed
Sep 7 16:58:01 localhost kernel: [ 3421.808629] NFS: releasing client cookie (0x00000000f4eac06d/0x00000000acddf283)
Sep 7 16:58:01 localhost kernel: [ 3421.808647] NFS4: Couldn't follow remote path
Sep 7 16:58:01 localhost kernel: [ 3421.808648] <-- nfs4_try_get_tree() = -13 [error]
Sep 7 16:58:01 localhost kernel: [ 3421.808717] NFS: parsing nfs mount option 'source'
Sep 7 16:58:01 localhost kernel: [ 3421.808721] NFS: parsing nfs mount option 'sec'
Sep 7 16:58:01 localhost kernel: [ 3421.808722] NFS: parsing sec=krb5i option
Sep 7 16:58:01 localhost kernel: [ 3421.808724] NFS: parsing nfs mount option 'rsize'
Sep 7 16:58:01 localhost kernel: [ 3421.808726] NFS: parsing nfs mount option 'wsize'
Sep 7 16:58:01 localhost kernel: [ 3421.808728] NFS: parsing nfs mount option 'vers'
Sep 7 16:58:01 localhost kernel: [ 3421.808729] NFS: parsing nfs mount option 'addr'
Sep 7 16:58:01 localhost kernel: [ 3421.808732] NFS: parsing nfs mount option 'clientaddr'
Sep 7 16:58:01 localhost kernel: [ 3421.808734] NFS: MNTPATH: '/homedir'
Sep 7 16:58:01 localhost kernel: [ 3421.808736] --> nfs4_try_get_tree()
Sep 7 16:58:01 localhost kernel: [ 3421.808742] NFS: get client cookie (0x00000000580ae727/0x0000000002d63c72)
Sep 7 16:58:01 localhost kernel: [ 3421.809896] nfs_callback_create_svc: service created
Sep 7 16:58:01 localhost kernel: [ 3421.809899] NFS: create per-net callback data; net=f0000098
Sep 7 16:58:01 localhost kernel: [ 3421.809961] nfs_callback_up: service started
Sep 7 16:58:01 localhost kernel: [ 3421.809962] NFS: nfs4_discover_server_trunking: testing 'perso-env.univ-rennes1.fr'
Sep 7 16:58:02 localhost kernel: [ 3421.986840] --> nfs4_proc_create_session clp=00000000580ae727 session=000000005dcda772
Sep 7 16:58:02 localhost kernel: [ 3421.986848] nfs4_init_channel_attrs: Fore Channel : max_rqst_sz=1049620 max_resp_sz=1049480 max_ops=8 max_reqs=64
Sep 7 16:58:02 localhost kernel: [ 3421.986851] nfs4_init_channel_attrs: Back Channel : max_rqst_sz=4096 max_resp_sz=4096 max_resp_sz_cached=0 max_ops=2 max_reqs=16
Sep 7 16:58:02 localhost kernel: [ 3421.987828] --> nfs4_setup_session_slot_tables
Sep 7 16:58:02 localhost kernel: [ 3421.987858] --> nfs4_realloc_slot_table: max_reqs=48, tbl->max_slots 0
Sep 7 16:58:02 localhost kernel: [ 3421.987867] nfs4_realloc_slot_table: tbl=0000000065356ffd slots=0000000051a899ef max_slots=48
Sep 7 16:58:02 localhost kernel: [ 3421.987869] <-- nfs4_realloc_slot_table: return 0
Sep 7 16:58:02 localhost kernel: [ 3421.987871] --> nfs4_realloc_slot_table: max_reqs=16, tbl->max_slots 0
Sep 7 16:58:02 localhost kernel: [ 3421.987873] nfs4_realloc_slot_table: tbl=0000000029c5325c slots=0000000092a73984 max_slots=16
Sep 7 16:58:02 localhost kernel: [ 3421.987875] <-- nfs4_realloc_slot_table: return 0
Sep 7 16:58:02 localhost kernel: [ 3421.987887] slot table setup returned 0
Sep 7 16:58:02 localhost kernel: [ 3421.987888] nfs4_proc_create_session client>seqid 102 sessionid 540311903:389113:101:5
Sep 7 16:58:02 localhost kernel: [ 3421.987891] <-- nfs4_proc_create_session
Sep 7 16:58:02 localhost kernel: [ 3421.987892] nfs4_schedule_state_renewal: requeueing work. Lease period = 5
Sep 7 16:58:02 localhost kernel: [ 3421.987901] --> nfs41_proc_reclaim_complete
Sep 7 16:58:02 localhost kernel: [ 3421.987905] NFS: nfs4_discover_server_trunking: status = 0
Sep 7 16:58:02 localhost kernel: [ 3421.987944] --> nfs41_call_sync_prepare data->seq_server 000000000b957e9c
Sep 7 16:58:02 localhost kernel: [ 3421.988002] --> nfs4_alloc_slot used_slots=0000 highest_used=4294967295 max_slots=48
Sep 7 16:58:02 localhost kernel: [ 3421.988006] <-- nfs4_alloc_slot used_slots=0001 highest_used=0 slotid=0
Sep 7 16:58:02 localhost kernel: [ 3421.988011] encode_sequence: sessionid=540311903:389113:101:5 seqid=1 slotid=0 max_slotid=0 cache_this=0
Sep 7 16:58:02 localhost kernel: [ 3421.988526] --> nfs4_reclaim_complete_done
Sep 7 16:58:02 localhost kernel: [ 3421.988530] --> nfs4_alloc_slot used_slots=0001 highest_used=0 max_slots=48
Sep 7 16:58:02 localhost kernel: [ 3421.988533] <-- nfs4_alloc_slot used_slots=0003 highest_used=1 slotid=1
Sep 7 16:58:02 localhost kernel: [ 3421.988535] nfs4_free_slot: slotid 1 highest_used_slotid 0
Sep 7 16:58:02 localhost kernel: [ 3421.988537] nfs41_sequence_process: Error 0 free the slot
Sep 7 16:58:02 localhost kernel: [ 3421.988539] nfs4_free_slot: slotid 0 highest_used_slotid 4294967295
Sep 7 16:58:02 localhost kernel: [ 3421.988541] <-- nfs4_reclaim_complete_done
Sep 7 16:58:02 localhost kernel: [ 3421.988545] <-- nfs41_proc_reclaim_complete status=0
Sep 7 16:58:02 localhost kernel: [ 3421.988547] --> nfs4_alloc_slot used_slots=0000 highest_used=4294967295 max_slots=16
Sep 7 16:58:02 localhost kernel: [ 3421.988549] <-- nfs4_alloc_slot used_slots=0001 highest_used=0 slotid=0
Sep 7 16:58:02 localhost kernel: [ 3421.988551] nfs4_free_slot: slotid 0 highest_used_slotid 4294967295
Sep 7 16:58:02 localhost kernel: [ 3421.988552] --> nfs4_alloc_slot used_slots=0000 highest_used=4294967295 max_slots=48
Sep 7 16:58:02 localhost kernel: [ 3421.988554] <-- nfs4_alloc_slot used_slots=0001 highest_used=0 slotid=0
Sep 7 16:58:02 localhost kernel: [ 3421.988558] --> nfs4_alloc_slot used_slots=0001 highest_used=0 max_slots=48
Sep 7 16:58:02 localhost kernel: [ 3421.988560] <-- nfs4_alloc_slot used_slots=0003 highest_used=1 slotid=1
Sep 7 16:58:02 localhost kernel: [ 3421.988561] nfs4_free_slot: slotid 1 highest_used_slotid 0
Sep 7 16:58:02 localhost kernel: [ 3421.988568] --> nfs41_call_sync_prepare data->seq_server 000000000b957e9c
Sep 7 16:58:02 localhost kernel: [ 3422.032659] nfs41_sequence_process: Error 1 free the slot
Sep 7 16:58:02 localhost kernel: [ 3422.032665] nfs4_free_slot: slotid 0 highest_used_slotid 4294967295
Sep 7 16:58:02 localhost kernel: [ 3422.032674] nfs4_get_rootfh: getroot error = 13
Sep 7 16:58:02 localhost kernel: [ 3422.032682] --> nfs4_proc_destroy_session
Sep 7 16:58:02 localhost kernel: [ 3422.033346] <-- nfs4_proc_destroy_session
Sep 7 16:58:02 localhost kernel: [ 3422.033349] nfs4_destroy_session Destroy backchannel for xprt 00000000b9884bbb
Sep 7 16:58:02 localhost kernel: [ 3422.034770] NFS: destroy per-net callback data; net=f0000098
Sep 7 16:58:02 localhost kernel: [ 3422.034800] nfs_callback_down: service destroyed
Sep 7 16:58:02 localhost kernel: [ 3422.034813] NFS: releasing client cookie (0x00000000580ae727/0x0000000002d63c72)
Sep 7 16:58:02 localhost kernel: [ 3422.034829] NFS4: Couldn't follow remote path
Sep 7 16:58:02 localhost kernel: [ 3422.034830] <-- nfs4_try_get_tree() = -13 [error]
Sep 7 16:58:02 localhost kernel: [ 3422.034895] NFS: parsing nfs mount option 'source'
Sep 7 16:58:02 localhost kernel: [ 3422.034899] NFS: parsing nfs mount option 'sec'
Sep 7 16:58:02 localhost kernel: [ 3422.034901] NFS: parsing sec=krb5i option
Sep 7 16:58:02 localhost kernel: [ 3422.034903] NFS: parsing nfs mount option 'rsize'
Sep 7 16:58:02 localhost kernel: [ 3422.034906] NFS: parsing nfs mount option 'wsize'
Sep 7 16:58:02 localhost kernel: [ 3422.034908] NFS: parsing nfs mount option 'vers'
Sep 7 16:58:02 localhost kernel: [ 3422.034910] NFS: parsing nfs mount option 'addr'
Sep 7 16:58:02 localhost kernel: [ 3422.034913] NFS: parsing nfs mount option 'clientaddr'
Sep 7 16:58:02 localhost kernel: [ 3422.034916] NFS: MNTPATH: '/homedir'
Sep 7 16:58:02 localhost kernel: [ 3422.034951] --> nfs4_try_get_tree()
Sep 7 16:58:02 localhost kernel: [ 3422.034958] NFS: get client cookie (0x00000000580ae727/0x0000000002d63c72)
Sep 7 16:58:02 localhost kernel: [ 3422.035943] nfs_callback_create_svc: service created
Sep 7 16:58:02 localhost kernel: [ 3422.035946] NFS: create per-net callback data; net=f0000098
Sep 7 16:58:02 localhost kernel: [ 3422.036000] nfs_callback_up: service started
Sep 7 16:58:02 localhost kernel: [ 3422.036002] NFS: nfs4_discover_server_trunking: testing 'perso-env.univ-rennes1.fr'
Sep 7 16:58:02 localhost kernel: [ 3422.205265] --> nfs4_proc_create_session clp=00000000580ae727 session=00000000dc2d7a6f
Sep 7 16:58:02 localhost kernel: [ 3422.205272] nfs4_init_channel_attrs: Fore Channel : max_rqst_sz=1049620 max_resp_sz=1049480 max_ops=8 max_reqs=64
Sep 7 16:58:02 localhost kernel: [ 3422.205275] nfs4_init_channel_attrs: Back Channel : max_rqst_sz=4096 max_resp_sz=4096 max_resp_sz_cached=0 max_ops=2 max_reqs=16
Sep 7 16:58:02 localhost kernel: [ 3422.206025] --> nfs4_setup_session_slot_tables
Sep 7 16:58:02 localhost kernel: [ 3422.206028] --> nfs4_realloc_slot_table: max_reqs=48, tbl->max_slots 0
Sep 7 16:58:02 localhost kernel: [ 3422.206718] nfs4_realloc_slot_table: tbl=00000000357b651b slots=000000009794ad00 max_slots=48
Sep 7 16:58:02 localhost kernel: [ 3422.206723] <-- nfs4_realloc_slot_table: return 0
Sep 7 16:58:02 localhost kernel: [ 3422.206725] --> nfs4_realloc_slot_table: max_reqs=16, tbl->max_slots 0
Sep 7 16:58:02 localhost kernel: [ 3422.206728] nfs4_realloc_slot_table: tbl=00000000af0b2cc4 slots=000000005204032e max_slots=16
Sep 7 16:58:02 localhost kernel: [ 3422.206729] <-- nfs4_realloc_slot_table: return 0
Sep 7 16:58:02 localhost kernel: [ 3422.206731] slot table setup returned 0
Sep 7 16:58:02 localhost kernel: [ 3422.206732] nfs4_proc_create_session client>seqid 102 sessionid 540311905:389113:101:5
Sep 7 16:58:02 localhost kernel: [ 3422.206735] <-- nfs4_proc_create_session
Sep 7 16:58:02 localhost kernel: [ 3422.206736] nfs4_schedule_state_renewal: requeueing work. Lease period = 5
Sep 7 16:58:02 localhost kernel: [ 3422.206744] --> nfs41_proc_reclaim_complete
Sep 7 16:58:02 localhost kernel: [ 3422.206749] NFS: nfs4_discover_server_trunking: status = 0
Sep 7 16:58:02 localhost kernel: [ 3422.206790] --> nfs41_call_sync_prepare data->seq_server 00000000c8c952c7
Sep 7 16:58:02 localhost kernel: [ 3422.206854] --> nfs4_alloc_slot used_slots=0000 highest_used=4294967295 max_slots=48
Sep 7 16:58:02 localhost kernel: [ 3422.206860] <-- nfs4_alloc_slot used_slots=0001 highest_used=0 slotid=0
Sep 7 16:58:02 localhost kernel: [ 3422.206867] encode_sequence: sessionid=540311905:389113:101:5 seqid=1 slotid=0 max_slotid=0 cache_this=0
Sep 7 16:58:02 localhost kernel: [ 3422.207302] --> nfs4_reclaim_complete_done
Sep 7 16:58:02 localhost kernel: [ 3422.207321] --> nfs4_alloc_slot used_slots=0001 highest_used=0 max_slots=48
Sep 7 16:58:02 localhost kernel: [ 3422.207324] <-- nfs4_alloc_slot used_slots=0003 highest_used=1 slotid=1
Sep 7 16:58:02 localhost kernel: [ 3422.207327] nfs4_free_slot: slotid 1 highest_used_slotid 0
Sep 7 16:58:02 localhost kernel: [ 3422.207329] nfs41_sequence_process: Error 0 free the slot
Sep 7 16:58:02 localhost kernel: [ 3422.207331] nfs4_free_slot: slotid 0 highest_used_slotid 4294967295
Sep 7 16:58:02 localhost kernel: [ 3422.207334] <-- nfs4_reclaim_complete_done
Sep 7 16:58:02 localhost kernel: [ 3422.207339] <-- nfs41_proc_reclaim_complete status=0
Sep 7 16:58:02 localhost kernel: [ 3422.207341] --> nfs4_alloc_slot used_slots=0000 highest_used=4294967295 max_slots=16
Sep 7 16:58:02 localhost kernel: [ 3422.207344] <-- nfs4_alloc_slot used_slots=0001 highest_used=0 slotid=0
Sep 7 16:58:02 localhost kernel: [ 3422.207346] nfs4_free_slot: slotid 0 highest_used_slotid 4294967295
Sep 7 16:58:02 localhost kernel: [ 3422.207348] --> nfs4_alloc_slot used_slots=0000 highest_used=4294967295 max_slots=48
Sep 7 16:58:02 localhost kernel: [ 3422.207350] <-- nfs4_alloc_slot used_slots=0001 highest_used=0 slotid=0
Sep 7 16:58:02 localhost kernel: [ 3422.207356] --> nfs4_alloc_slot used_slots=0001 highest_used=0 max_slots=48
Sep 7 16:58:02 localhost kernel: [ 3422.207359] <-- nfs4_alloc_slot used_slots=0003 highest_used=1 slotid=1
Sep 7 16:58:02 localhost kernel: [ 3422.207361] nfs4_free_slot: slotid 1 highest_used_slotid 0
Sep 7 16:58:02 localhost kernel: [ 3422.207369] --> nfs41_call_sync_prepare data->seq_server 00000000c8c952c7
Sep 7 16:58:02 localhost kernel: [ 3422.250182] nfs41_sequence_process: Error 1 free the slot
Sep 7 16:58:02 localhost kernel: [ 3422.250188] nfs4_free_slot: slotid 0 highest_used_slotid 4294967295
Sep 7 16:58:02 localhost kernel: [ 3422.250197] nfs4_get_rootfh: getroot error = 13
Sep 7 16:58:02 localhost kernel: [ 3422.250238] --> nfs4_proc_destroy_session
Sep 7 16:58:02 localhost kernel: [ 3422.250961] <-- nfs4_proc_destroy_session
Sep 7 16:58:02 localhost kernel: [ 3422.250964] nfs4_destroy_session Destroy backchannel for xprt 0000000003a1a9f5
Sep 7 16:58:02 localhost kernel: [ 3422.252306] NFS: destroy per-net callback data; net=f0000098
Sep 7 16:58:02 localhost kernel: [ 3422.252342] nfs_callback_down: service destroyed
Sep 7 16:58:02 localhost kernel: [ 3422.252358] NFS: releasing client cookie (0x00000000580ae727/0x0000000002d63c72)
Sep 7 16:58:02 localhost kernel: [ 3422.252377] NFS4: Couldn't follow remote path
Sep 7 16:58:02 localhost kernel: [ 3422.252378] <-- nfs4_try_get_tree() = -13 [error]

[Birger Brunswiek (birger)]

Kernel 5.10 removed support for RC4-HMAC (encryption type 23) for Kerberos. See https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e33d2a7b3041d7f8cd1f0a2a4ca42a5bc112b14e You were probably using this specific encryption type to authenticate. You want to make sure your keytab contains and your KDC support AES (encryption types 17 and 18).