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Subjectfs/namespace.c:638 mntput_no_expire warn_on in 2.6.30.2

To whom it concerns or for kerneloops.org. I didn't look too closely,
but it seems to have leaked a reference on a device mapper mount point
so I couldn't umount anymore. This was with a kpartx loop back mount
of a file.

Kernel 2.6.30.2 (+ some totally unrelated patches)

-Andi

------------[ cut here ]------------
WARNING: at /home/lsrc/linux-2.6.30/fs/namespace.c:638 mntput_no_expire+0xcf/0x11b()
Hardware name:
Modules linked in: ...
Pid: 7180, comm: umount Tainted: G D 2.6.30.2-BASIL #7
Call Trace:
[<ffffffff8020e284>] dump_trace+0x6e/0x292
[<ffffffff805bccb3>] dump_stack+0x69/0x6f
[<ffffffff802376db>] warn_slowpath_common+0x77/0xa2
[<ffffffff802b78a1>] mntput_no_expire+0xcf/0x11b
[<ffffffff802b7e27>] sys_umount+0x2b7/0x2e2
[<ffffffff8020ba6b>] system_call_fastpath+0x16/0x1b
[<00007fa4d9d1c1c7>] 0x7fa4d9d1c1c7
---[ end trace 12f3f532ce924b4b ]---


--
ak@linux.intel.com -- Speaking for myself only.


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