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Re: kern/58730: NFS client locks up waiting on nfscn2
The following reply was made to PR kern/58730; it has been noted by GNATS.
From: Martin Husemann <martin%duskware.de@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc:
Subject: Re: kern/58730: NFS client locks up waiting on nfscn2
Date: Tue, 8 Oct 2024 18:10:30 +0200
The client seems to loose all networking, on the server I see ARP requests
from the client (with a longish delay between small batches).
I am not sure why getty on the console hangs though (unless it is paged
out, which seems unlikely).
A bit more ddb output from another instance of the hang below.
Martin
db> ps
PID LID S CPU FLAGS STRUCT LWP * NAME WAIT
5593 5593 3 0 1000000 c46d9180 sh nfscn2
22609 22609 3 0 180 c4716480 tail kqueue
506 506 3 0 180 c2f72240 tcsh pause
504 504 3 0 180 c340f900 rxvt select
436 436 3 0 180 c2fdf880 tcsh pause
1077 1077 3 0 180 c2f727c0 sshd-session poll
1970 1970 3 0 180 c2f72d40 sshd-session poll
288 288 3 0 180 c340fbc0 tee pipe_rd
289 289 3 0 180 c36db6c0 atf-report pipe_rd
290 290 3 0 180 c36db400 tee pipe_rd
925 925 3 0 1c0 c2fdf300 atf-run pipe_rd
350 350 3 0 180 c3604680 sh wait
340 340 3 0 180 c2f72500 sh wait
252 252 3 0 0 c2f44200 getty rwlock
1654 1654 3 0 40 c36db140 cron nfssnd
558 558 3 0 180 c3604c00 inetd kqueue
730 730 3 0 180 c3604940 sshd poll
200 200 3 0 180 c3604100 ntpd pause
237 237 3 0 180 c340f640 rpcbind poll
732 538 3 0 180 c340f380 named parked
732 733 3 0 180 c340f0c0 timer parked
732 638 3 0 180 c3055b80 isc-net-0001 kqueue
732 765 3 0 180 c30558c0 isc-net-0000 kqueue
732 732 3 0 180 c3055600 named sigwait
757 757 3 0 0 c3055340 syslogd nfsrcv
494 494 3 0 180 c2fdfb40 dhcpcd poll
497 497 3 0 180 c2fdf5c0 dhcpcd poll
492 492 3 0 180 c3055080 dhcpcd poll
486 486 3 0 180 c2fdf040 dhcpcd poll
91 91 3 0 180 c2f72a80 wdogctl nanoslp
1 1 3 0 180 c2e99c80 init wait
0 21568 5 0 240 c36043c0 (zombie)
0 1650 3 0 200 c2f444c0 swapiod swapiod
0 106 3 0 200 c2f44d00 pooldrain pooldrain
0 105 3 0 240 c2f44a40 ioflush nfssnd
0 104 3 0 200 c2f44780 pgdaemon pgdaemon
0 101 3 0 200 c2ebdcc0 nfsio nfsiod
0 100 3 0 200 c2ebda00 nfsio nfsiod
0 99 3 0 200 c2ebd740 nfsio nfsiod
0 98 3 0 200 c2ebd480 nfsio nfsiod
0 97 3 0 200 c2e58140 swdmover swdmvr
0 96 3 0 200 c2ebd1c0 usb0 usbevt
0 60 3 0 200 c2e58400 rt_free rt_free
0 59 3 0 200 c2e586c0 unpgc unpgc
0 58 3 0 200 c2e58980 icmp6_wqinput/0 icmp6_wqinput
0 57 3 0 200 c2e58c40 nd6_timer nd6_timer
0 56 3 0 200 c2e99180 icmp_wqinput/0 icmp_wqinput
0 55 3 0 200 c2e99440 rt_timer rt_timer
0 31 3 0 200 c2e99700 vmem_rehash vmem_rehash
0 30 3 0 200 c2e999c0 sdmmc0 mmctaskq
0 21 3 0 200 c2b55c00 entbutler entropy
0 20 3 0 240 c2b55940 atabus1 atath
0 19 3 0 240 c2b55680 atabus0 atath
0 18 3 0 200 c2b553c0 usbtask-dr usbtsk
0 17 3 0 200 c2b55100 usbtask-hc usbtsk
0 16 3 0 200 c2b39bc0 sysmon smtaskq
0 15 3 0 200 c2b39900 pmfsuspend pmfsuspend
0 14 3 0 200 c2b39640 pmfevent pmfevent
0 13 3 0 200 c2b39380 sopendfree sopendfr
0 12 3 0 200 c2b390c0 ifwdog ifwdog
0 11 3 0 200 c2a6db80 iflnkst iflnkst
0 10 3 0 200 c2a6d8c0 nfssilly nfssilly
0 9 3 0 200 c2a6d600 pooldisp pooldisp
0 8 3 0 200 c2a6d340 modunload mod_unld
0 7 3 0 200 c2a6d080 xcall/0 xcall
0 6 1 0 200 c2a6cb40 softser/0
0 5 1 0 40200 c2a6c880 softclk/0
0 4 1 0 200 c2a6c5c0 softbio/0
0 3 1 0 200 c2a6c300 softnet/0
0 > 2 1 0 201 c2a6c040 idle/0
0 0 3 0 200 c051b700 swapper uvm
db> show all tstiles
PID LID COMMAND WAITING-FOR TYPE WAIT-CHANNEL
5593 5593 sh 0 kpause c46d9180
22609 22609 tail 0 cv c470e8b8
506 506 tcsh 0 kpause c2f72240
504 504 rxvt 0 select c2a5d9c0
436 436 tcsh 0 kpause c2fdf880
1077 1077 sshd-session 0 select c2a5d9c0
1970 1970 sshd-session 0 select c2a5d9c0
288 288 tee 0 cv c2f6f704
289 289 atf-report 0 cv c2f6f654
290 290 tee 0 cv c2f6f5a4
925 925 atf-run 0 cv c2f6f7b4
350 350 sh 0 cv c35ff2cc
340 340 sh 0 cv c2eb27c4
252 252 getty c36db140 rwlock c2f3e160
1654 1654 cron 0 cv c2b4994c
558 558 inetd 0 cv c36f1af8
730 730 sshd 0 select c2a5d9c0
200 200 ntpd 0 kpause c3604100
237 237 rpcbind 0 select c2a5d9c0
732 538 named 0 lwp_park c340f380
732 733 named 0 lwp_park c340f0c0
732 638 named 0 cv c340b378
732 765 named 0 cv c33fadf8
732 732 named 0 cv c3055768
757 757 syslogd 0 cv c2b49944
494 494 dhcpcd 0 select c2a5d9c0
497 497 dhcpcd 0 select c2a5d9c0
492 492 dhcpcd 0 select c2a5d9c0
486 486 dhcpcd 0 select c2a5d9c0
91 91 wdogctl 0 kpause c2f72a80
1 1 init 0 cv c2eb202c
0 1650 system 0 cv c35f6aec
0 106 system 0 cv netbsd:uvmpd_pool_drain_c
v
0 105 system 0 cv c2b4994c
0 104 system 0 sleep netbsd:uvm+0x68
0 101 system 0 cv c2f38604
0 100 system 0 cv c2f38584
0 99 system 0 cv c2f38504
0 98 system 0 cv c2f38484
0 97 system 0 sleep netbsd:swdmover_cv
0 96 system 0 cv c2b4e264
0 60 system 0 cv c2e9aaec
0 59 system 0 cv netbsd:unp_thread_cv
0 58 system 0 cv c2e9a8ac
0 57 system 0 cv c2e9a7ec
0 56 system 0 cv c2e9a66c
0 55 system 0 cv c2e9a5ac
0 31 system 0 cv c2e9a2ac
0 30 system 0 cv c2e40b8c
0 21 system 0 cv netbsd:entropy_global+0xf
0
0 20 system 0 cv c2e4e10c
0 19 system 0 cv c2b5390c
0 18 system 0 cv netbsd:usb_taskq+0x2c
0 17 system 0 cv netbsd:usb_taskq+0xc
0 16 system 0 cv netbsd:sysmon_task_queue_
cv
0 15 system 0 cv c2a6bbac
0 14 system 0 cv c2a6baec
0 13 system 0 cv netbsd:pendfree_thread_cv
0 12 system 0 cv c2a6b96c
0 11 system 0 cv c2a6b8ac
0 10 system 0 cv c2a6b72c
0 9 system 0 cv c2a6b4d4
0 8 system 0 cv netbsd:module_thread_cv
0 7 system 0 cv netbsd:cpu_info_store+0x8
0 0 system 0 kpause netbsd:lwp0
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