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Subjectstuck in D state on smbfs (2.6.0-test11)
Hi-

I backed up my Subversion repository to an SMB mount (attached to
Windows XP), then did 'svnadmin dump .' on the backup. svnadmin is now
stuck in the D state. It does not respond to signals. umount and
umount -f on the mount both fail with "Device is busy". Kernel is
2.6.0-test11 + Nick Piggin's v19 scheduler policy + Jeff Garzik's exp2
net patches.

Relevant sysrq-t output:

smbiod S C051DEE0 0 5096 1 5092 4765 (L-TLB)
ccc7ff9c 00000046 c7aad8c0 c051dee0 00000007 ccc7ff84 d0add300 c4284840
0003148a 00000000 00000000 0007a11e 00000002 0007a114 0000000c
99127e37
ccc7e000 ccc7ffc0 ccc7e000 ccc7ffec d0adfb3b cff95680 00000077
ccc7e000
Call Trace:
[<d0add300>] smb_recv_available+0x40/0x60 [smbfs]
[<d0adfb3b>] smbiod+0x8b/0x1af [smbfs]
[<c011afb0>] default_wake_function+0x0/0x20
[<d0adfab0>] smbiod+0x0/0x1af [smbfs]
[<c01082c9>] kernel_thread_helper+0x5/0xc

svnadmin D C051DEE0 604 5188 4842 4980 (L-TLB)
cb5dfcec 00000046 c7aac660 c051dee0 c051dee0 998dd2ec 00000009 00000000
00000000 00000000 c8e366e0 0007a011 0000010f 0007a11a 00000006
9ec7303b
00000000 c10bcb60 c1280750 cb5dfcf4 c011bf2e cb5dfd4c c0139b08
c10bcb60
Call Trace:
[<c011bf2e>] io_schedule+0xe/0x20
[<c0139b08>] __lock_page+0xa8/0xd0
[<c011c840>] autoremove_wake_function+0x0/0x50
[<c011c840>] autoremove_wake_function+0x0/0x50
[<c0177bb4>] mpage_writepages+0x2d4/0x320
[<d0aded10>] smb_writepage+0x0/0xd0 [smbfs]
[<c013f0a5>] do_writepages+0x35/0x40
[<c013954c>] __filemap_fdatawrite+0xdc/0xf0
[<c0139579>] filemap_fdatawrite+0x19/0x20
[<d0adf114>] smb_file_release+0x74/0x90 [smbfs]
[<c01564a6>] __fput+0x116/0x130
[<c014a294>] exit_mmap+0x164/0x190
[<c011caf6>] mmput+0x66/0xc0
[<c0120b10>] do_exit+0x140/0x3d0
[<c0120e8b>] do_group_exit+0x7b/0xb0
[<c012a2cd>] get_signal_to_deliver+0x1ed/0x380
[<c010a234>] do_signal+0xb4/0xf0
[<c0149243>] do_mmap_pgoff+0x3d3/0x6a0
[<c011afb0>] default_wake_function+0x0/0x20
[<c013295b>] do_futex+0x6b/0x80
[<c0132a85>] sys_futex+0x115/0x130
[<c010a2c9>] do_notify_resume+0x59/0x5c
[<c010a4a6>] work_notifysig+0x13/0x15

Killing smbiod and smbmount had no effect (although both processes died
successfully). Resetting the smb connection from the windows side was
noticed by the kernel (netstat stopped showing the connection), but also
had no effect on svnadmin.

After killing processes and the connection, 'ls /mnt/win' fails
gracefully with an i/o error.


Is there anything else I can do to help troubleshoot this?

Thanks,
Andy

Please CC me in replies.
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