Bug 1466850

Summary: nfs-utils x86_64 1:2.1.1-5.rc4 hangs NFS and NFS-server after DNF install w/ divide error: 0000
Product: [Fedora] Fedora Reporter: RobbieTheK <rkudyba>
Component: firewalldAssignee: Eric Garver <egarver>
Status: CLOSED EOL QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: unspecified    
Version: 26CC: amessina, bcodding, bfields, h.reindl, jlayton, jpopelka, rkudyba, smayhew, steved, twoerner
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
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Fixed In Version: Doc Type: If docs needed, set a value
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Clone Of: Environment:
Last Closed: 2018-05-29 12:30:19 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description RobbieTheK 2017-06-30 14:37:01 UTC
Caused NFS to hang to the point we had to reboot.
nfs-utils x86_64 1:2.1.1-5.rc4.fc25
kernel at the time was 4.11.5-200.fc25.x86_64

Logs:
Jun 29 02:23:27 dsm rpc.idmapd: rpc.idmapd: conf_reinit: open ("(null)", O_RDONLY) failed
Jun 29 02:23:27 dsm rpc.idmapd: rpc.idmapd: conf_reinit: open ("(null)", O_RDONLY) failed
Jun 29 02:23:27 dsm kernel: nfsd: last server has exited, flushing export cache
Jun 29 02:23:27 dsm systemd: Starting NFS server and services...
Jun 29 02:23:27 dsm kernel: divide error: 0000 [#1] SMP
Jun 29 02:23:27 dsm kernel: Modules linked in: fuse arc4 md4 nls_utf8 cifs ccm rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache cfg80211 rfkill nf_log_ipv4 nf_log_common xt_LOG xt_limit xt_multiport ipt_MASQUERADE nf_nat_masquerade_ipv4 ip6t_REJECT nf_reject_ipv6 nf_con
ntrack_ipv6 iptable_nat nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 xt_conntrack nf_nat nf_conntrack libcrc32c ip6table_filter ip6_tables iptable_mangle joydev coretemp kvm iTCO_wdt gpio_ich iTCO_vendor_support irqbypass ses ipmi_ssif enclosure dcdbas 
scsi_transport_sas i5000_edac ipmi_si edac_core lpc_ich ipmi_devintf i5k_amb ipmi_msghandler shpchp tpm_tis tpm_tis_core tpm nfsd auth_rpcgss nfs_acl lockd grace sunrpc binfmt_misc uas usb_storage amdkfd amd_iommu_v2 radeon i2c_algo_bit drm_kms_helper ttm drm ata_gene
ric pata_acpi serio_raw
Jun 29 02:23:27 dsm kernel: megaraid_sas bnx2
Jun 29 02:23:27 dsm kernel: CPU: 4 PID: 7781 Comm: rpc.nfsd Not tainted 4.11.5-200.fc25.x86_64 #1
Jun 29 02:23:27 dsm kernel: Hardware name: Dell Inc. PowerEdge 1950/0TT740, BIOS 2.2.6 02/05/2008
Jun 29 02:23:27 dsm kernel: task: ffff9290e5034880 task.stack: ffffa770ce0c4000
Jun 29 02:23:27 dsm kernel: RIP: 0010:svc_pool_for_cpu+0x2b/0x80 [sunrpc]
Jun 29 02:23:27 dsm kernel: RSP: 0018:ffffa770ce0c7c18 EFLAGS: 00010246
Jun 29 02:23:27 dsm kernel: RAX: 0000000000000000 RBX: ffff9290286a6000 RCX: 0000000000000002
Jun 29 02:23:27 dsm kernel: RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff928ec3d45500
Jun 29 02:23:27 dsm kernel: RBP: ffffa770ce0c7c18 R08: ffff928ec3d45528 R09: 0000000000018783
Jun 29 02:23:27 dsm kernel: R10: ffffffffc06fb100 R11: 0000000000000000 R12: ffff9290286a6010
Jun 29 02:23:27 dsm kernel: R13: ffff9290286a6018 R14: ffff928ec3d45528 R15: ffff928ec3d45500
Jun 29 02:23:27 dsm kernel: FS:  00007f0f69cacc40(0000) GS:ffff9290efd00000(0000) knlGS:0000000000000000
Jun 29 02:23:27 dsm kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jun 29 02:23:27 dsm kernel: CR2: 00007ffede0fe0a8 CR3: 00000001fb7c4000 CR4: 00000000000006e0
Jun 29 02:23:27 dsm kernel: Call Trace:
Jun 29 02:23:27 dsm kernel: svc_xprt_do_enqueue+0xef/0x260 [sunrpc]
Jun 29 02:23:27 dsm kernel: svc_xprt_received+0x47/0x90 [sunrpc]
Jun 29 02:23:27 dsm kernel: svc_add_new_perm_xprt+0x76/0x90 [sunrpc]
Jun 29 02:23:27 dsm kernel: svc_addsock+0x14b/0x200 [sunrpc]
Jun 29 02:23:27 dsm kernel: ? recalc_sigpending+0x1b/0x50
Jun 29 02:23:27 dsm kernel: ? __getnstimeofday64+0x41/0xd0
Jun 29 02:23:27 dsm kernel: ? do_gettimeofday+0x29/0x90
Jun 29 02:23:27 dsm kernel: write_ports+0x255/0x2c0 [nfsd]
Jun 29 02:23:27 dsm kernel: ? _copy_from_user+0x4e/0x80
Jun 29 02:23:27 dsm kernel: ? write_recoverydir+0x100/0x100 [nfsd]
Jun 29 02:23:27 dsm kernel: nfsctl_transaction_write+0x48/0x80 [nfsd]
Jun 29 02:23:27 dsm kernel: __vfs_write+0x37/0x160
Jun 29 02:23:27 dsm kernel: ? __inet_hash+0xd2/0x260
Jun 29 02:23:27 dsm kernel: vfs_write+0xb5/0x1a0
Jun 29 02:23:27 dsm kernel: SyS_write+0x55/0xc0
Jun 29 02:23:27 dsm kernel: entry_SYSCALL_64_fastpath+0x1a/0xa9
Jun 29 02:23:27 dsm kernel: RIP: 0033:0x7f0f695c8ae0
Jun 29 02:23:27 dsm kernel: RSP: 002b:00007ffede056ba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
Jun 29 02:23:27 dsm kernel: RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f0f695c8ae0
Jun 29 02:23:27 dsm kernel: RDX: 0000000000000002 RSI: 00005637ab1dd600 RDI: 0000000000000003
Jun 29 02:23:27 dsm kernel: RBP: 00007ffede056ba0 R08: 0000000000000001 R09: 0000000000000002
Jun 29 02:23:27 dsm kernel: R10: 0000000000000064 R11: 0000000000000246 R12: 0000000000000004
Jun 29 02:23:27 dsm kernel: R13: 00005637abfa37a0 R14: 00005637abfa3720 R15: 00007ffede056658
Jun 29 02:23:27 dsm kernel: Code: 66 66 66 66 90 48 8b 87 98 00 00 00 55 48 89 e5 48 83 78 08 00 74 10 8b 05 97 51 02 00 83 f8 01 74 40 83 f8 02 74 19 31 c0 31 d2 <f7> b7 88 00 00 00 5d 89 d0 48 c1 e0 07 48 03 87 90 00 00 00 c3 
Jun 29 02:23:27 dsm kernel: RIP: svc_pool_for_cpu+0x2b/0x80 [sunrpc] RSP: ffffa770ce0c7c18
Jun 29 02:23:27 dsm kernel: ---[ end trace 7a2bfc4aacf7a21e ]---

Comment 1 RobbieTheK 2017-07-01 02:14:49 UTC
NFS and NFS-server just won't start now.

Also seeing:

Jun 30 21:49:52 ourserver systemd[1]: Starting NFSv4 ID-name mapping service...
Jun 30 21:49:52 ourserver rpc.idmapd[16991]: rpc.idmapd: conf_reinit: open
("(null)", O_RDONLY) failed
Jun 30 21:49:52 ourserver rpc.idmapd[16991]: rpc.idmapd: conf_reinit: open
("(null)", O_RDONLY) failed
Jun 30 21:49:52 ourserver systemd[1]: Started NFSv4 ID-name mapping service.

I also added this to https://bugzilla.linux-nfs.org/show_bug.cgi?id=308

Comment 2 RobbieTheK 2017-07-01 17:10:01 UTC
I added the Linux kernel Bugzilla can this be pushed through? We start summer classes Monday and no users can log in and Grub does not have any 4.10 kernels.

Comment 3 Harald Reindl 2017-07-02 17:43:14 UTC
> and Grub does not have any 4.10 kernels

and why don#t you just donwload whatever kernel builds you need from koji?

https://koji.fedoraproject.org/koji/packageinfo?packageID=8
https://koji.fedoraproject.org/koji/packageinfo?buildStart=50&packageID=8&buildOrder=-completion_time&tagOrder=name&tagStart=100#buildlist

Comment 4 RobbieTheK 2017-07-02 17:49:24 UTC
I'm a little skittish as to how to do that and which packages are needed, e.g., debug, core, etc. Is there a doc that shows how to downgrade? I've Googled with mixed results.

Comment 5 Harald Reindl 2017-07-02 17:54:37 UTC
frankly "rpm -qa | grep kernel" shows you what sub packages are installed and some yum/dnf/rpm/rpm --force dance are basics with trial and error in doubt

Comment 6 RobbieTheK 2017-07-02 18:38:25 UTC
OK that helped a little:
rpm -qa | grep kernel | grep 7
kernel-devel-4.11.7-200.fc25.x86_64
kernel-core-4.11.7-200.fc25.x86_64
kernel-tools-libs-4.11.7-200.fc25.x86_64
kernel-4.11.7-200.fc25.x86_64
kernel-tools-libs-devel-4.11.7-200.fc25.x86_64
kernel-modules-4.11.7-200.fc25.x86_64
kernel-headers-4.11.7-200.fc25.x86_64
kernel-modules-extra-4.11.7-200.fc25.x86_64
kernel-tools-4.11.7-200.fc25.x86_64

So I downloaded these:
kernel-4.10.16-200.fc25.x86_64.rpm
kernel-core-4.10.16-200.fc25.x86_64.rpm
kernel-devel-4.10.16-200.fc25.x86_64.rpm
kernel-headers-4.10.16-200.fc25.x86_64.rpm
kernel-modules-4.10.16-200.fc25.x86_64.rpm
kernel-modules-extra-4.10.16-200.fc25.x86_64.rpm
kernel-tools-4.10.16-200.fc25.x86_64.rpm
kernel-tools-libs-4.10.16-200.fc25.x86_64.rpm
kernel-tools-libs-devel-4.10.16-200.fc25.x86_64.rpm

But running: rpm -ivh --oldpackage kernel*
error: Failed dependencies:
	kernel-headers < 4.11.7-200.fc25 is obsoleted by (installed) kernel-headers-4.11.7-200.fc25.x86_64

Any suggestions? Thanks for your help so far.

Comment 7 Harald Reindl 2017-07-02 18:44:29 UTC
you don't need "kernel-headers" and "kernel-devel" at all for normal operations except akmod for build out-of-tree modules in case of crappy hardware and you missed the hint about --force as well look at "man rpm" - there is also --nodeps in case you know what you are doing and case of a kernel downgrade you usually do

Comment 8 RobbieTheK 2017-07-03 02:14:10 UTC
I was able to downgrade to 4.10.16-200.fc25.x86_64. All of our servers except the master NIS server seem to be responding OK. I've rebooted them all with this kernel but the master NIS server still hangs when I try to 'su' as a NIS user. No problems with a local or root user. Here are some systemctl's. One thing I do recall changing is enabling NetworkManager while network was running. Any other ideas? You've been so helpful.

 systemctl status nfs
* nfs-server.service - NFS server and services
   Loaded: loaded (/usr/lib/systemd/system/nfs-server.service; enabled; vendor preset: disabled)
  Drop-In: /run/systemd/generator/nfs-server.service.d
           `-order-with-mounts.conf
   Active: active (exited) since Sun 2017-07-02 15:49:03 EDT; 6h ago
  Process: 6252 ExecStopPost=/usr/sbin/exportfs -f (code=exited, status=0/SUCCESS)
  Process: 6249 ExecStopPost=/usr/sbin/exportfs -au (code=exited, status=0/SUCCESS)
  Process: 6246 ExecStop=/usr/sbin/rpc.nfsd 0 (code=exited, status=0/SUCCESS)
  Process: 6268 ExecStart=/usr/sbin/rpc.nfsd $RPCNFSDARGS (code=exited, status=0/SUCCESS)
  Process: 6264 ExecStartPre=/usr/sbin/exportfs -r (code=exited, status=0/SUCCESS)
 Main PID: 6268 (code=exited, status=0/SUCCESS)
    Tasks: 0 (limit: 4915)
   CGroup: /system.slice/nfs-server.service

Jul 02 15:49:03 oursever systemd[1]: Starting NFS server and services...
Jul 02 15:49:03 oursever systemd[1]: Started NFS server and services.
[root@dsm localguy]# systemctl status nfs-server
* nfs-server.service - NFS server and services
   Loaded: loaded (/usr/lib/systemd/system/nfs-server.service; enabled; vendor preset: disabled)
  Drop-In: /run/systemd/generator/nfs-server.service.d
           `-order-with-mounts.conf
   Active: active (exited) since Sun 2017-07-02 15:49:03 EDT; 6h ago
  Process: 6252 ExecStopPost=/usr/sbin/exportfs -f (code=exited, status=0/SUCCESS)
  Process: 6249 ExecStopPost=/usr/sbin/exportfs -au (code=exited, status=0/SUCCESS)
  Process: 6246 ExecStop=/usr/sbin/rpc.nfsd 0 (code=exited, status=0/SUCCESS)
  Process: 6268 ExecStart=/usr/sbin/rpc.nfsd $RPCNFSDARGS (code=exited, status=0/SUCCESS)
  Process: 6264 ExecStartPre=/usr/sbin/exportfs -r (code=exited, status=0/SUCCESS)
 Main PID: 6268 (code=exited, status=0/SUCCESS)
    Tasks: 0 (limit: 4915)
   CGroup: /system.slice/nfs-server.service

Jul 02 15:49:03 ourserver systemd[1]: Starting NFS server and services...
Jul 02 15:49:03 ourserver systemd[1]: Started NFS server and services.

 systemctl status autofs    
* autofs.service - Automounts filesystems on demand
   Loaded: loaded (/usr/lib/systemd/system/autofs.service; enabled; vendor preset: disabled)
   Active: active (running) since Sun 2017-07-02 22:03:11 EDT; 5min ago
  Process: 20094 ExecStart=/usr/sbin/automount $OPTIONS --pid-file /run/autofs.pid (code=exited, status=0/SUCCESS)
 Main PID: 20096 (automount)
    Tasks: 12 (limit: 4915)
   CGroup: /system.slice/autofs.service
           |-20096 /usr/sbin/automount --pid-file /run/autofs.pid
           |-20395 /usr/bin/mount -t nfs -s -o rw,nolock erdos:/home/users /u/erdos
           `-20396 /sbin/mount.nfs erdos:/home/users /u/erdos -s -o rw,nolock

Jul 02 22:03:11 ourserver systemd[1]: Starting Automounts filesystems on demand...
Jul 02 22:03:11 ourserver systemd[1]: Started Automounts filesystems on demand.

systemctl status ypserv
* ypserv.service - NIS/YP (Network Information Service) Server
   Loaded: loaded (/usr/lib/systemd/system/ypserv.service; enabled; vendor preset: disabled)
   Active: active (running) since Sun 2017-07-02 22:03:04 EDT; 6min ago
 Main PID: 19642 (ypserv)
   Status: "Processing requests..."
    Tasks: 1 (limit: 4915)
   CGroup: /system.slice/ypserv.service
           `-19642 /usr/sbin/ypserv -f

Jul 02 22:03:04 ourserver systemd[1]: Starting NIS/YP (Network Information Service) Server...
Jul 02 22:03:04 ourserver systemd[1]: Started NIS/YP (Network Information Service) Server.

systemctl status ypbind
* ypbind.service - NIS/YP (Network Information Service) Clients to NIS Domain Binder
   Loaded: loaded (/usr/lib/systemd/system/ypbind.service; enabled; vendor preset: disabled)
   Active: active (running) since Sun 2017-07-02 22:03:11 EDT; 6min ago
  Process: 20079 ExecStartPost=/usr/libexec/ypbind-post-waitbind (code=exited, status=0/SUCCESS)
  Process: 20043 ExecStartPre=/usr/sbin/setsebool allow_ypbind=1 (code=exited, status=1/FAILURE)
  Process: 20030 ExecStartPre=/usr/libexec/ypbind-pre-setdomain (code=exited, status=0/SUCCESS)
 Main PID: 20053 (ypbind)
   Status: "Processing requests..."
    Tasks: 4 (limit: 4915)
   CGroup: /system.slice/ypbind.service
           `-20053 /usr/sbin/ypbind -n

Jul 02 22:03:11 ourserver systemd[1]: Starting NIS/YP (Network Information Service) Clients to NIS Domain Binder...
Jul 02 22:03:11 ourserver setsebool[20043]: setsebool:  SELinux is disabled.
Jul 02 22:03:11 ourserver systemd[1]: Started NIS/YP (Network Information Service) Clients to NIS Domain Binder.

systemctl status network
* network.service - LSB: Bring up/down networking
   Loaded: loaded (/etc/rc.d/init.d/network; generated; vendor preset: disabled)
   Active: active (exited) since Sun 2017-07-02 22:03:12 EDT; 7min ago
     Docs: man:systemd-sysv-generator(8)
  Process: 19588 ExecStop=/etc/rc.d/init.d/network stop (code=exited, status=0/SUCCESS)
  Process: 20031 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=0/SUCCESS)

Jul 02 22:03:11 ourserver systemd[1]: Starting LSB: Bring up/down networking...
Jul 02 22:03:11 ourserver network[20031]: Bringing up loopback interface:  [  OK  ]
Jul 02 22:03:12 ourserver network[20031]: Bringing up interface eth0:  [  OK  ]
Jul 02 22:03:12 ourserver systemd[1]: Started LSB: Bring up/down networking.

systemctl status NetworkManager
* NetworkManager.service - Network Manager
   Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled; vendor preset: enabled)
   Active: active (running) since Sun 2017-07-02 22:03:05 EDT; 7min ago
     Docs: man:NetworkManager(8)
 Main PID: 19893 (NetworkManager)
    Tasks: 3 (limit: 4915)
   CGroup: /system.slice/NetworkManager.service
           `-19893 /usr/sbin/NetworkManager --no-daemon

Jul 02 22:03:06 ourserver NetworkManager[19893]: <info>  [1499047386.0875] device (eth0): state change: config -> ip-config (reas
Jul 02 22:03:06 ourserver NetworkManager[19893]: <info>  [1499047386.0920] device (eth0): state change: ip-config -> ip-check (re
Jul 02 22:03:06 ourserver NetworkManager[19893]: <info>  [1499047386.1033] device (eth0): state change: ip-check -> secondaries (
Jul 02 22:03:06 ourserver NetworkManager[19893]: <info>  [1499047386.1038] device (eth0): state change: secondaries -> activated 
Jul 02 22:03:06 ourserver NetworkManager[19893]: <info>  [1499047386.1040] manager: NetworkManager state is now CONNECTED_LOCAL
Jul 02 22:03:06 ourserver NetworkManager[19893]: <info>  [1499047386.1452] manager: NetworkManager state is now CONNECTED_SITE
Jul 02 22:03:06 ourserver NetworkManager[19893]: <info>  [1499047386.1453] policy: set 'System eth0' (eth0) as default for IPv4 r
Jul 02 22:03:06 ourserver NetworkManager[19893]: <info>  [1499047386.1474] device (eth0): Activation: successful, device activate
Jul 02 22:03:06 ourserver NetworkManager[19893]: <info>  [1499047386.3320] manager: NetworkManager state is now CONNECTED_GLOBAL
Jul 02 22:03:11 ourserver NetworkManager[19893]: <info>  [1499047391.2042] manager: startup complete

Comment 9 RobbieTheK 2017-07-03 03:01:57 UTC
Also started ypserv with debug and got this:

Jul  2 22:38:08 dsm ypserv: #011ypdb_open("ourdomain", "hosts.byname")
Jul  2 22:38:08 dsm ypserv: Found: ourdomain/hosts.byname (0)
Jul  2 22:38:08 dsm ypserv: ypdb_close() called
Jul  2 22:38:08 dsm ypserv: #011-> Error #-3
Jul  2 22:38:11 dsm ypserv: ypproc_domain("ourdomain") [From: ourip:855]
Jul  2 22:38:11 dsm ypserv: connect from ourip
Jul  2 22:38:11 dsm ypserv: #011-> Ok.
Jul  2 22:38:16 dsm ypserv: ypproc_domain("ourdomain") [From: ourip:744]
Jul  2 22:38:16 dsm ypserv: connect from ourip
Jul  2 22:38:16 dsm ypserv: #011-> Ok.
Jul  2 22:38:30 dsm systemd: user: State 'stop-final-sigterm' timed out. Killing.
Jul  2 22:38:30 dsm systemd: user: Killing process 21434 (systemd) with signal SIGKILL.
Jul  2 22:38:30 dsm systemd: Failed to start User Manager for UID 6105.
Jul  2 22:38:30 dsm systemd: user: Unit entered failed state.
Jul  2 22:38:30 dsm systemd: user: Failed with result 'timeout'.

Any idea what Error #-3 is?

Comment 10 Steve Dickson 2017-10-05 17:55:18 UTC
I'm not seeing this as an NFS problem... What am I missing?

Comment 11 RobbieTheK 2017-10-05 18:00:31 UTC
The divide by zero error was fixed over the summer but the Error #-3 remains a mystery. I believe it's related to firewalld and this BZ: 1488616 which I've linked here. We had to disable firewalld and just use iptables to get NFS to work with NIS.

Comment 12 Steve Dickson 2017-10-16 12:22:38 UTC
(In reply to RobbieTheK from comment #11)
> The divide by zero error was fixed over the summer but the Error #-3 remains
> a mystery. I believe it's related to firewalld and this BZ: 1488616 which
> I've linked here. We had to disable firewalld and just use iptables to get
> NFS to work with NIS.

Fair enough... I'm going to change the component to firewalld so they
can have a look at this.

Comment 13 Fedora End Of Life 2018-05-03 08:10:50 UTC
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Comment 14 Fedora End Of Life 2018-05-29 12:30:19 UTC
Fedora 26 changed to end-of-life (EOL) status on 2018-05-29. Fedora 26
is no longer maintained, which means that it will not receive any
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If you can reproduce this bug against a currently maintained version of
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