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Date: Sun, 03 Sep 2006 22:26:35 +0200
From: Krzysztof Halasa <khc@...waw.pl>
To: <linux-kernel@...r.kernel.org>
Subject: 2.6.18rc5: NFSd possible recursive locking
Hi,
another one (details available on request):
[ INFO: possible recursive locking detected ]
---------------------------------------------
nfsd/1566 is trying to acquire lock:
(&inode->i_mutex){--..}, at: [<c0334e0c>] mutex_lock+0x1c/0x20
but task is already holding lock:
(&inode->i_mutex){--..}, at: [<c0334e0c>] mutex_lock+0x1c/0x20
other info that might help us debug this:
2 locks held by nfsd/1566:
#0: (hash_sem){..--}, at: [<c01b292d>] exp_readlock+0xd/0x10
#1: (&inode->i_mutex){--..}, at: [<c0334e0c>] mutex_lock+0x1c/0x20
stack backtrace:
[<c0103522>] show_trace+0x12/0x20
[<c0103b79>] dump_stack+0x19/0x20
[<c012dfab>] __lock_acquire+0x8db/0xd70
[<c012e7b6>] lock_acquire+0x76/0xa0
[<c0334c06>] __mutex_lock_slowpath+0x66/0x250
[<c0334e0c>] mutex_lock+0x1c/0x20
[<c01afd1d>] nfsd_setattr+0x46d/0x5b0
[<c01b12da>] nfsd_create_v3+0x4da/0x540
[<c01b6574>] nfsd3_proc_create+0x104/0x170
[<c01ab7d8>] nfsd_dispatch+0x88/0x1e0
[<c03248d4>] svc_process+0x3f4/0x6e0
[<c01abce1>] nfsd+0x191/0x300
[<c0100c85>] kernel_thread_helper+0x5/0x10
--
Krzysztof Halasa
--
VGER BF report: U 0.502044
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