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Subject: 'BUG: scheduling with irqs disabled' when umounting NFS volume
From: Lee Revell <rlrevell@joe-job.com>
To: linux-kernel <linux-kernel@vger.kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>, Trond Myklebust <trond.myklebust@fys.uio.no>
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Date: Fri, 08 Apr 2005 16:15:11 -0400
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Kernel is 2.6.12-rc1-RT-V0.7.43-05.

BUG: scheduling with irqs disabled: umount/0x00000000/20612
caller is schedule_timeout+0x63/0xc0
 [<c01033d3>] dump_stack+0x23/0x30 (20)
 [<c02b4f5a>] schedule+0xea/0x140 (36)
 [<c02b5b23>] schedule_timeout+0x63/0xc0 (64)
 [<c02b5744>] interruptible_sleep_on_timeout+0x74/0xe0 (64)
 [<c01cf898>] lockd_down+0xb8/0x140 (24)
 [<c01c2137>] nfs_kill_super+0x77/0x80 (16)
 [<c016033c>] deactivate_super+0x8c/0xb0 (28)
 [<c0178bc1>] sys_umount+0x41/0x90 (88)
 [<c0178c2e>] sys_oldumount+0x1e/0x20 (16)
 [<c0102dee>] syscall_call+0x7/0xb (-8124)
---------------------------
| preempt count: 00000001 ]
| 1-level deep critical section nesting:
----------------------------------------
.. [<c01320ad>] .... print_traces+0x1d/0x60
.....[<c01033d3>] ..   ( <= dump_stack+0x23/0x30)

Lee