Simply P6.0.1 RC2: зависает размонтирование расшаренного каталога

[Igor Zakhrebetkov]

Michael Shigorin пишет:
> Безотносительно источника проблемы -- возможно, поможет объехать umount -l
не помогает, команда umount /mnt/win -f -l висит уже около часа.

В messages повторяющиеся сообщения вида :
=======================================
Nov  9 13:31:14 alt6simple kernel: [  275.952162] CIFS VFS: default security mechanism 
requested.  The default security mechanism will be upgraded from ntlm to ntlmv2 in 
kernel release 3.1
Nov  9 13:46:58 alt6simple -- MARK --
Nov  9 14:01:01 alt6simple crond[8657]: (root) CMD (run-parts /etc/cron.hourly)
Nov  9 14:12:21 alt6simple kernel: [ 2743.040087] CIFS VFS: Server 10.99.0.99 has not 
responded in 300 seconds. Reconnecting...
Nov  9 14:26:58 alt6simple -- MARK --
Nov  9 14:46:38 alt6simple kernel: [ 4800.257097] INFO: task umount:10031 blocked for 
more than 120 seconds.
Nov  9 14:46:38 alt6simple kernel: [ 4800.257110] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Nov  9 14:46:38 alt6simple kernel: [ 4800.257120] umount          D e68a06b4     0 10031 
   7496 0x00000000
Nov  9 14:46:38 alt6simple kernel: [ 4800.257132]  d380fd30 00200082 c10cc72d e68a06b4 
00000016 00000000 00000000 00000000
Nov  9 14:46:38 alt6simple kernel: [ 4800.257144]  c15b1b80 e6c54070 c15b1b80 c15b1b80 
36306e03 0000042c c15b1b80 e7405b80
Nov  9 14:46:38 alt6simple kernel: [ 4800.257155]  e6c54070 e6e7a030 00000001 e7d78920 
e7d78940 c15248c0 00000003 000280da
Nov  9 14:46:38 alt6simple kernel: [ 4800.257165] Call Trace:
Nov  9 14:46:38 alt6simple kernel: [ 4800.257181]  [<c10cc72d>] ? find_get_page+0x1d/0x90
Nov  9 14:46:38 alt6simple kernel: [ 4800.257193]  [<c103eff4>] schedule+0x34/0x50
Nov  9 14:46:38 alt6simple kernel: [ 4800.257203]  [<c1377dde>] 
__mutex_lock_slowpath+0xbe/0x120
Nov  9 14:46:38 alt6simple kernel: [ 4800.257213]  [<c117122a>] ? find_nls+0x7a/0xc0
Nov  9 14:46:38 alt6simple kernel: [ 4800.257221]  [<c1377949>] mutex_lock+0x19/0x30
Nov  9 14:46:38 alt6simple kernel: [ 4800.257235]  [<e9e22794>] 
cifs_reconnect_tcon+0x104/0x2a0 [cifs]
Nov  9 14:46:38 alt6simple kernel: [ 4800.257244]  [<c102b6b7>] ? 
kmap_atomic_prot+0x47/0x100
Nov  9 14:46:38 alt6simple kernel: [ 4800.257252]  [<c111ddce>] ? do_lookup+0x3e/0x2e0
Nov  9 14:46:38 alt6simple kernel: [ 4800.257261]  [<e9e2294f>] smb_init+0x1f/0x90 [cifs]
Nov  9 14:46:38 alt6simple kernel: [ 4800.257271]  [<e9e276dc>] 
CIFSSMBQPathInfo+0x3c/0x220 [cifs]
Nov  9 14:46:38 alt6simple kernel: [ 4800.257282]  [<e9e3a31b>] 
cifs_get_inode_info+0x2fb/0x480 [cifs]
Nov  9 14:46:38 alt6simple kernel: [ 4800.257290]  [<c112b704>] ? 
vfsmount_lock_local_unlock+0x14/0x20
Nov  9 14:46:38 alt6simple kernel: [ 4800.257300]  [<e9e327f5>] ? 
build_path_from_dentry+0xc5/0x240 [cifs]
Nov  9 14:46:38 alt6simple kernel: [ 4800.257309]  [<e9e32848>] ? 
build_path_from_dentry+0x118/0x240 [cifs]
Nov  9 14:46:38 alt6simple kernel: [ 4800.257316]  [<c1378cf8>] ? _raw_spin_lock+0x8/0x10
Nov  9 14:46:38 alt6simple kernel: [ 4800.257325]  [<e9e3d563>] ? _GetXid+0x53/0x80 [cifs]
Nov  9 14:46:38 alt6simple kernel: [ 4800.257334]  [<e9e3bb49>] 
cifs_revalidate_dentry_attr+0x119/0x1a0 [cifs]
Nov  9 14:46:38 alt6simple kernel: [ 4800.257344]  [<e9e3bc93>] cifs_getattr+0x53/0x120 
[cifs]
Nov  9 14:46:38 alt6simple kernel: [ 4800.257351]  [<c11173f9>] vfs_getattr+0x39/0x110
Nov  9 14:46:38 alt6simple kernel: [ 4800.257360]  [<e9e3bc40>] ? 
cifs_revalidate_dentry+0x30/0x30 [cifs]
Nov  9 14:46:38 alt6simple kernel: [ 4800.257366]  [<c1117545>] vfs_fstatat+0x75/0x90
Nov  9 14:46:38 alt6simple kernel: [ 4800.257371]  [<c111759b>] vfs_stat+0x1b/0x20
Nov  9 14:46:38 alt6simple kernel: [ 4800.257376]  [<c1117904>] sys_stat64+0x14/0x30
Nov  9 14:46:38 alt6simple kernel: [ 4800.257382]  [<c112cad3>] ? mntput+0x13/0x20
Nov  9 14:46:38 alt6simple kernel: [ 4800.257387]  [<c111c1f5>] ? path_put+0x15/0x20
Nov  9 14:46:38 alt6simple kernel: [ 4800.257392]  [<c1117881>] ? sys_readlinkat+0x61/0xa0
Nov  9 14:46:38 alt6simple kernel: [ 4800.257397]  [<c11178e7>] ? sys_readlink+0x27/0x30
Nov  9 14:46:38 alt6simple kernel: [ 4800.257403]  [<c1378f79>] syscall_call+0x7/0xb
Nov  9 14:48:19 alt6simple consolehelper[10211]: executing "/usr/sbin/acc": (igorz --> 
root --> root)
Nov  9 14:48:19 alt6simple alteratord: alteratord shutdown succeeded
Nov  9 14:48:38 alt6simple kernel: [ 4920.256084] INFO: task umount:10031 blocked for 
more than 120 seconds.
Nov  9 14:48:38 alt6simple kernel: [ 4920.256088] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Nov  9 14:48:38 alt6simple kernel: [ 4920.256090] umount          D e68a06b4     0 10031 
   7496 0x00000000
Nov  9 14:48:38 alt6simple kernel: [ 4920.256094]  d380fd30 00200082 c10cc72d e68a06b4 
00000016 00000000 00000000 00000000
Nov  9 14:48:38 alt6simple kernel: [ 4920.256098]  c15b1b80 e6c54070 c15b1b80 c15b1b80 
36306e03 0000042c c15b1b80 e7405b80
Nov  9 14:48:38 alt6simple kernel: [ 4920.256102]  e6c54070 e6e7a030 00000001 e7d78920 
e7d78940 c15248c0 00000003 000280da
Nov  9 14:48:38 alt6simple kernel: [ 4920.256106] Call Trace:
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-- 
Igor Z