linux-kernel - BUG: bad unlock balance detected! -- [<c017986d>] generic_sync_sb

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Message-ID: <a44ae5cd0701091917o13fc3badud118364a5e8be9dd@mail.gmail.com>
Date:	Tue, 9 Jan 2007 21:17:30 -0600
From:	"Miles Lane" <miles.lane@...il.com>
To:	"Andrew Morton" <akpm@...l.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: BUG: bad unlock balance detected! -- [<c017986d>] generic_sync_sb_inodes+0x26a/0x275

[ BUG: bad unlock balance detected! ]
-------------------------------------
swapper/0 is trying to release lock (inode_lock) at:
[<c017986d>] generic_sync_sb_inodes+0x26a/0x275
but there are no more locks to release!

other info that might help us debug this:
1 lock held by swapper/0:
 #0:  (&type->s_umount_key){--..}, at: [<c0161eb2>] sget+0x1e4/0x31c

stack backtrace:
 [<c0104ebb>] show_trace_log_lvl+0x1a/0x2f
 [<c010559b>] show_trace+0x12/0x14
 [<c010564d>] dump_stack+0x16/0x18
 [<c0132252>] print_unlock_inbalance_bug+0xec/0xf9
 [<c013421d>] lock_release_non_nested+0x95/0x150
 [<c013442d>] lock_release+0x155/0x17c
 [<c02d62ce>] _spin_unlock+0x16/0x3d
 [<c017986d>] generic_sync_sb_inodes+0x26a/0x275
 [<c0179895>] sync_sb_inodes+0x1d/0x20
 [<c017990d>] sync_inodes_sb+0x75/0x7d
 [<c0161ff7>] __fsync_super+0xd/0x66
 [<c016205b>] fsync_super+0xb/0x19
 [<c01620b2>] do_remount_sb+0x49/0x101
 [<c016257c>] get_sb_single+0x77/0x8c
 [<c0198c40>] sysfs_get_sb+0x1c/0x1e
 [<c016243b>] vfs_kern_mount+0x81/0xf1
 [<c01624c1>] kern_mount+0x16/0x18
 [<c03d040a>] sysfs_init+0x57/0xa5
 [<c03cefd8>] mnt_init+0xc5/0x1c2
 [<c03ceced>] vfs_caches_init+0x138/0x149
 [<c03be9e8>] start_kernel+0x1fb/0x344
 [<00000000>] 0x0
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