Comment 2 for bug 240071

Pid: 3753, comm: postgres Not tainted (2.6.24-19-xen #1)
Jul 16 15:20:26 zeus kernel: [26239.210572] BUG: soft lockup - CPU#0 stuck for 11s! [postgres:3753]
Jul 16 15:20:26 zeus kernel: [26239.210635]
Jul 16 15:20:26 zeus kernel: [26239.210637] Pid: 3753, comm: postgres Not tainted (2.6.24-19-xen #1)
Jul 16 15:20:26 zeus kernel: [26239.210639] EIP: 0061:[dm_mod:_spin_lock+0x7/0x10] EFLAGS: 00000286 CPU: 0
Jul 16 15:20:26 zeus kernel: [26239.210646] EIP is at _spin_lock+0x7/0x10
Jul 16 15:20:26 zeus kernel: [26239.210648] EAX: c1dce98c EBX: 00000000 ECX: 2414c000 EDX: c1dce980
Jul 16 15:20:26 zeus kernel: [26239.210650] ESI: 00000000 EDI: ec397d90 EBP: 0002414c ESP: e4691ee0
Jul 16 15:20:26 zeus kernel: [26239.210651] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0069
Jul 16 15:20:26 zeus kernel: [26239.210655] CR0: 8005003b CR2: b7b640a0 CR3: 018d2000 CR4: 00000660
Jul 16 15:20:26 zeus kernel: [26239.210658] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
Jul 16 15:20:26 zeus kernel: [26239.210660] DR6: ffff0ff0 DR7: 00000400
Jul 16 15:20:26 zeus kernel: [26239.210661] [_pin_lock+0xfd/0x190] _pin_lock+0xfd/0x190
Jul 16 15:20:26 zeus kernel: [26239.210677] [mm_unpin+0x1a/0x30] mm_unpin+0x1a/0x30
Jul 16 15:20:26 zeus kernel: [26239.210681] [arch_exit_mmap+0x81/0x190] arch_exit_mmap+0x81/0x190
Jul 16 15:20:26 zeus kernel: [26239.210684] [do_page_fault+0x366/0xe90] do_page_fault+0x366/0xe90
Jul 16 15:20:26 zeus kernel: [26239.210688] [exit_mmap+0x17/0x100] exit_mmap+0x17/0x100
Jul 16 15:20:26 zeus kernel: [26239.210692] [usbcore:down_read+0x8/0x9a0] down_read+0x8/0x20
Jul 16 15:20:26 zeus kernel: [26239.210695] [mmput+0x23/0x80] mmput+0x23/0x80
Jul 16 15:20:26 zeus kernel: [26239.210698] [do_exit+0x165/0x8b0] do_exit+0x165/0x8b0
Jul 16 15:20:26 zeus kernel: [26239.210702] [vfs_write+0x11e/0x170] vfs_write+0x11e/0x170
Jul 16 15:20:26 zeus kernel: [26239.210707] [do_group_exit+0x2a/0xa0] do_group_exit+0x2a/0xa0
Jul 16 15:20:26 zeus kernel: [26239.210710] [syscall_call+0x7/0x0b] syscall_call+0x7/0xb
Jul 16 15:20:26 zeus kernel: [26239.210714] [vcc_getsockopt+0x150/0x170] vcc_getsockopt+0x150/0x170
Jul 16 15:20:26 zeus kernel: [26239.210719] =======================
Jul 16 15:20:38 zeus kernel: [26251.024575] BUG: soft lockup - CPU#0 stuck for 11s! [postgres:3753]