nfs-kernel-server failure on 5.4.43-sunxi64

Termo · June 19, 2020

Armbianmonitor:

update works on 5.4.28-sunxi64, so for sure kernel issue...

I fail to start the nfs-kernel-server on my neo2:

● nfs-server.service - NFS server and services
   Loaded: loaded (/lib/systemd/system/nfs-server.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Fri 2020-06-19 22:50:35 CEST; 57s ago
 Main PID: 28168 (code=exited, status=1/FAILURE)

Jun 19 22:50:35 neo2 systemd[1]: Starting NFS server and services...
Jun 19 22:50:35 neo2 rpc.nfsd[28168]: rpc.nfsd: writing fd to kernel failed: errno 111 (Connection refused)
Jun 19 22:50:35 neo2 rpc.nfsd[28168]: rpc.nfsd: unable to set any sockets for nfsd
Jun 19 22:50:35 neo2 systemd[1]: nfs-server.service: Main process exited, code=exited, status=1/FAILURE
Jun 19 22:50:35 neo2 systemd[1]: nfs-server.service: Failed with result 'exit-code'.
Jun 19 22:50:35 neo2 systemd[1]: Stopped NFS server and services.

and from dmesg:

[621412.035437] rpc.nfsd: page allocation failure: order:5, mode:0x40dc0(GFP_KERNEL|__GFP_COMP|__GFP_ZERO), nodemask=(null),cpuset=/,mems_allowed=0
[621412.035472] CPU: 2 PID: 25458 Comm: rpc.nfsd Not tainted 5.4.43-sunxi64 #20.05.2
[621412.035476] Hardware name: FriendlyARM NanoPi NEO 2 (DT)
[621412.035481] Call trace:
[621412.035498]  dump_backtrace+0x0/0x180
[621412.035505]  show_stack+0x14/0x20
[621412.035516]  dump_stack+0xb0/0xd8
[621412.035528]  warn_alloc+0xfc/0x168
[621412.035535]  __alloc_pages_slowpath+0x9c4/0x9f0
[621412.035543]  __alloc_pages_nodemask+0x214/0x298
[621412.035551]  alloc_pages_current+0x80/0xf0
[621412.035561]  kmalloc_order+0x1c/0x88
[621412.035624]  nfsd_file_cache_init+0x64/0x248 [nfsd]
[621412.035660]  nfsd_svc+0x198/0x288 [nfsd]
[621412.035695]  write_threads+0x94/0x110 [nfsd]
[621412.035729]  nfsctl_transaction_write+0x54/0x98 [nfsd]
[621412.035739]  __vfs_write+0x18/0x40
[621412.035745]  vfs_write+0xb0/0x1d0
[621412.035752]  ksys_write+0x64/0xe8
[621412.035759]  __arm64_sys_write+0x18/0x20
[621412.035770]  el0_svc_common.constprop.2+0x88/0x150
[621412.035777]  el0_svc_handler+0x20/0x80
[621412.035785]  el0_svc+0x8/0xc
[621412.035789] Mem-Info:
[621412.035810] active_anon:14680 inactive_anon:13376 isolated_anon:0
                 active_file:3920 inactive_file:3223 isolated_file:0
                 unevictable:0 dirty:8 writeback:0 unstable:0
                 slab_reclaimable:13144 slab_unreclaimable:17259
                 mapped:4842 shmem:176 pagetables:1074 bounce:0
                 free:29614 free_pcp:0 free_cma:26079
[621412.035827] Node 0 active_anon:58720kB inactive_anon:53504kB active_file:15680kB inactive_file:12892kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:19368kB dirty:32kB writeback:0kB shmem:704kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
[621412.035831] Node 0 DMA32 free:118456kB min:4396kB low:4980kB high:5564kB active_anon:58768kB inactive_anon:53512kB active_file:15644kB inactive_file:13036kB unevictable:0kB writepending:32kB present:524288kB managed:489208kB mlocked:0kB kernel_stack:3632kB pagetables:4296kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:104316kB
[621412.035852] lowmem_reserve[]: 0 0 0
[621412.035861] Node 0 DMA32: 2311*4kB (UMEHC) 571*8kB (UMEHC) 1032*16kB (UMEHC) 740*32kB (HC) 434*64kB (HC) 184*128kB (C) 40*256kB (C) 6*512kB (C) 0*1024kB 0*2048kB 0*4096kB = 118644kB
[621412.035910] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
[621412.035917] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=32768kB
[621412.035923] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
[621412.035929] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=64kB
[621412.035932] 7530 total pagecache pages
[621412.035939] 194 pages in swap cache
[621412.035945] Swap cache stats: add 24936974, delete 24936777, find 248269/24985229
[621412.035949] Free swap  = 48244kB
[621412.035952] Total swap = 244600kB
[621412.035955] 131072 pages RAM
[621412.035958] 0 pages HighMem/MovableOnly
[621412.035962] 8770 pages reserved
[621412.035965] 32768 pages cma reserved
[621412.035972] nfsd: unable to allocate nfsd_file_hashtbl

I will try to downgrade kernel and see if this solves the issue

Regards

Termo

Edited June 19, 2020 by Termo
found working kernel