[Bug 1355829] [NEW] rpc.mountd segfaults after upgrading to 1.28-8ubuntu1

[Karol Czeryna]

Public bug reported:

After upgrading nfs-utils and nfs-kernel-server to 1.2.8-8ubuntu1 on my
NFS host server, rpc.mountd segfaulting when I want to connect from
another host.

Client is on Trusty, Host is on Utopic.

Aug 12 15:44:20 cthulu kernel: rpc.mountd[8075]: segfault at 0 ip 00000000004096a4 sp 00007ffffa3b8770 error 4 in rpc.mountd[400000+18000]
Aug 12 15:44:20 cthulu kernel: rpc.mountd[8014]: segfault at 0 ip 00000000004096a4 sp 00007fff4c8e1750 error 4 in rpc.mountd[400000+18000]

/etc/exports
/export 10.0.0.0/24(rw,fsid=0,no_subtree_check,async,no_root_squash)

/etc/fstab on client
10.0.0.1:/ /storage nfs4 _netdev,rw,nodev,noatime,nodiratime,noacl,acregmin=10,port=2049,rsize=1048576,wsize=1048576,timeo=14,nolock,intr,bg 0 0

Client:
Linux bender.em0.eu 3.13.0-32-generic #57-Ubuntu SMP Tue Jul 15 03:51:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

Host:
Linux cthulu.em0.eu 3.15.9-031509-generic #201408072114 SMP Fri Aug 8 01:15:48 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

** Affects: nfs-utils (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1355829

Title:
  rpc.mountd segfaults after upgrading to 1.28-8ubuntu1

Status in “nfs-utils” package in Ubuntu:
  New

Bug description:
  After upgrading nfs-utils and nfs-kernel-server to 1.2.8-8ubuntu1 on
  my NFS host server, rpc.mountd segfaulting when I want to connect from
  another host.

  Client is on Trusty, Host is on Utopic.

  Aug 12 15:44:20 cthulu kernel: rpc.mountd[8075]: segfault at 0 ip 00000000004096a4 sp 00007ffffa3b8770 error 4 in rpc.mountd[400000+18000]
  Aug 12 15:44:20 cthulu kernel: rpc.mountd[8014]: segfault at 0 ip 00000000004096a4 sp 00007fff4c8e1750 error 4 in rpc.mountd[400000+18000]

  /etc/exports
  /export 10.0.0.0/24(rw,fsid=0,no_subtree_check,async,no_root_squash)

  /etc/fstab on client
  10.0.0.1:/ /storage nfs4 _netdev,rw,nodev,noatime,nodiratime,noacl,acregmin=10,port=2049,rsize=1048576,wsize=1048576,timeo=14,nolock,intr,bg 0 0

  Client:
  Linux bender.em0.eu 3.13.0-32-generic #57-Ubuntu SMP Tue Jul 15 03:51:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

  Host:
  Linux cthulu.em0.eu 3.15.9-031509-generic #201408072114 SMP Fri Aug 8 01:15:48 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

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