Resent: BUG in RT 45-01 when RT program dumps core

[kus Kusche Klaus]

Quoting my mail from Apr 11th (received no response up to now):
> When a process running with RT priority dumps core,
> I get the following BUG:
> 
> Apr 11 13:44:23 OF455 kern.err kernel: BUG: rtc2:833 RT task 
> yield()-ing!
> Apr 11 13:44:23 OF455 kern.warn kernel:  [<c026dad1>] 
> yield+0x61/0x70 (8)
> Apr 11 13:44:23 OF455 kern.warn kernel:  [<c0151e49>] 
> coredump_wait+0x79/0xc0 (20)
> Apr 11 13:44:23 OF455 kern.warn kernel:  [<c0151f83>] 
> do_coredump+0xf3/0x200 (92)
> Apr 11 13:44:23 OF455 kern.warn kernel:  [<c0136789>] 
> kmem_cache_free+0x49/0x120 (32)
> Apr 11 13:44:23 OF455 kern.warn kernel:  [<c012abdb>] 
> atomic_dec_and_spin_lock+0x3b/0x50 (24)
> Apr 11 13:44:23 OF455 kern.warn kernel:  [<c011c9a5>] 
> __dequeue_signal+0x105/0x160 (20)
> Apr 11 13:44:23 OF455 kern.warn kernel:  [<c011e734>] 
> get_signal_to_deliver+0x334/0x350 (48)
> Apr 11 13:44:23 OF455 kern.warn kernel:  [<c01027f8>] 
> do_signal+0x98/0x180 (44)
> Apr 11 13:44:23 OF455 kern.warn kernel:  [<c0106b56>] 
> timer_interrupt+0x46/0x70 (108)
> Apr 11 13:44:23 OF455 kern.warn kernel:  [<c012c9eb>] 
> handle_IRQ_event+0x5b/0xe0 (8)
> Apr 11 13:44:23 OF455 kern.warn kernel:  [<c012cba1>] 
> __do_IRQ+0x111/0x190 (48)
> Apr 11 13:44:23 OF455 kern.warn kernel:  [<c010d590>] 
> do_page_fault+0x0/0x530 (16)
> Apr 11 13:44:23 OF455 kern.warn kernel:  [<c0102917>] 
> do_notify_resume+0x37/0x3c (8)
> Apr 11 13:44:23 OF455 kern.warn kernel:  [<c0102ae6>] 
> work_notifysig+0x13/0x15 (8)

This is still absolutely reproducable, in RT 7.47-01,
with slight variations in the stack trace.

Is this something to worry about?

-- 
Klaus Kusche                 (Software Development - Control Systems)
KEBA AG             Gewerbepark Urfahr, A-4041 Linz, Austria (Europe)
Tel: +43 / 732 / 7090-3120                 Fax: +43 / 732 / 7090-6301
E-Mail: kus@xxxxxxxx                                WWW: www.keba.com
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