On Tue, 2006-09-05 at 10:37 -0700, Miles Lane wrote:
> ieee1394: Node changed: 0-01:1023 -> 0-00:1023
> ieee1394: Node changed: 0-02:1023 -> 0-01:1023
> ieee1394: Node suspended: ID:BUS[0-00:1023] GUID[0080880002103eae]
>
> =============================================
> [ INFO: possible recursive locking detected ]
> 2.6.18-rc5-mm1 #2
> ---------------------------------------------
> knodemgrd_0/2321 is trying to acquire lock:
> (&s->rwsem){----}, at: [<f8958897>] nodemgr_probe_ne+0x311/0x38d [ieee1394]
>
> but task is already holding lock:
> (&s->rwsem){----}, at: [<f8959078>] nodemgr_host_thread+0x717/0x883 [ieee1394]
looks like a real bug to me:
nodemgr_node_probe() takes down_read(&class->subsys.rwsem) and then
calls nodemgr_probe_ne() which calls nodemgr_update_pdrv() which does
down_read(&class->subsys.rwsem).
Such recursive taking of rwsems is not allowed (rwsems are fair, if a
write comes in in between then there is a deadlock).
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
