mount.nfs partially freezes my system

[Thomas]

Binary package hint: nfs-common

Description: Ubuntu 8.04.1
Release: 8.04

nfs-common:
  Installed: 1:1.1.2-2ubuntu2.1
  Candidate: 1:1.1.2-2ubuntu2.1
  Version table:
 *** 1:1.1.2-2ubuntu2.1 0
        500 http://gb.archive.ubuntu.com hardy-updates/main Packages
        100 /var/lib/dpkg/status
     1:1.1.2-2ubuntu2 0
        500 http://gb.archive.ubuntu.com hardy/main Packages

I have a NFS disk which is automounted. Randomly, when I run a script which access to this disk, my system partially freezes, ie. I cannot open new applications and the gnome panel is no more usable (clicking on it does nothing), but I can still use the already opened applications. I expect to not have my system freezing when I access to a NFS storage ;-)

dmesg gives:

{noformat}
[104788.657580] Pid: 10026, comm: mount.nfs Tainted: P (2.6.24-19-generic #1)
[104788.657582] EIP: 0060:[<c01a7c39>] EFLAGS: 00010206 CPU: 1
[104788.657588] EIP is at graft_tree+0x39/0xf0
[104788.657590] EAX: f23b5198 EBX: ffffffec ECX: 00000000 EDX: ed4fff2c
[104788.657592] ESI: f6bb1780 EDI: ed4fff2c EBP: 00000020 ESP: ed4ffe04
[104788.657594] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[104788.657596] Process mount.nfs (pid: 10026, ti=ed4fe000 task=f6b89700 task.ti=ed4fe000)
[104788.657598] Stack: ed4fff2c ed4fff30 f6bb1780 c01a7fd2 00200000 f6bb1780 ed44e000 ee7fa000
[104788.657603] c01a90eb 00000000 ee692000 00000020 00000246 00000000 00000001 00000040
[104788.657608] 00000007 f6b89700 001280d2 00000000 c01730d0 00000044 0000014e f79fde94
[104788.657613] Call Trace:
[104788.657619] [<c01a7fd2>] do_add_mount+0x72/0x100
[104788.657625] [<c01a90eb>] do_mount+0x5fb/0x700
[104788.657634] [<c01730d0>] __alloc_pages+0x60/0x3a0
[104788.657643] [<c0121084>] kunmap_atomic+0x84/0xb0
[104788.657646] [<c012103d>] kunmap_atomic+0x3d/0xb0
[104788.657652] [<c017dbf7>] handle_mm_fault+0x387/0x730
[104788.657657] [<c012103d>] kunmap_atomic+0x3d/0xb0
[104788.657666] [<c031e0bf>] do_page_fault+0x13f/0x730
[104788.657676] [<c01730d0>] __alloc_pages+0x60/0x3a0
[104788.657680] [<c031df80>] do_page_fault+0x0/0x730
[104788.657684] [<c031c752>] error_code+0x72/0x80
[104788.657692] [<c01a7a55>] copy_mount_options+0xa5/0x140
[104788.657699] [<c01a9807>] sys_mount+0x77/0xb0
[104788.657705] [<c01043c2>] sysenter_past_esp+0x6b/0xa9
[104788.657712] [<c0310000>] unix_stream_sendmsg+0x1a0/0x390
[104788.657719] =======================
[104788.657720] Code: 04 89 c6 89 7c 24 08 8b 40 14 89 d7 8b 40 30 85 c0 79 11 89 d8 8b 74 24 04 8b 1c 24 8b 7c 24 08 83 c4 0c c3 8b 02 b3 ec 8b 48 0c <0f> b7 41 6a 25 00 f0 00 00 3d 00 40 00 00 8b 46 10 0f 94 c2 8b
[104788.657747] EIP: [<c01a7c39>] graft_tree+0x39/0xf0 SS:ESP 0068:ed4ffe04
[104788.657752] ---[ end trace 5a0e9a03be5bbf98 ]---
{noformat}

[Aaron Straus (aaron-merfinllc)]

Hi Thomas, please see the 214810 bug and the workaround we're using (using the Intrepid kernel)