On Wed, 30 Sep 2009, Luis Claudio R. Goncalves wrote:
> Hello,
>
> This is apparently a new manifestation of the same issue I have been chasing
> for quite a while and have been failing in a very shameful way to fix. In
> the original issue, whenever I run deluge (bit torrent client) at
> SCHED_FIFO, I got the error message below and system would freeze / panic
> during shutdown:
>
> ================================================
> [ BUG: lock held when returning to user space! ]
> ------------------------------------------------
> deluged/3035 is leaving the kernel with locks still held!
> 1 lock held by deluged/3035:
> #0: (&lock->lock){......}, at: [<ffffffffa02ae965>] ipt_do_table+0x10c/0x5f3 [ip_tables]
Yikes. Can you please decode the code line for ffffffffa02ae965 ? Does
the bug happen with function tracer enabled ? If yes, enable
ftrace_dump_on_oops hook up a serial console and capture the dump.
> BUG: unable to handle kernel paging request at 0000001e316060fe
> IP: [<ffffffff811ff3e8>] plist_add+0x54/0xba
The list is corrupted. Looks like we look at stale data. ftrace output
might help there as well.
Thanks,
tglx
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