re: panic: locking xyz against myself (linux DRM?!)

[matthew green <mrg%eterna.com.au@localhost>]

> I've been offering the attached patch to try to debug the source of
> the problem before the symptom you described happens.  I haven't
> gotten any diagnostics back from anyone yet.  If you can, please try
> it out and let me know.

i've got this running on my laptop but i'm not using it very heavily
right now.

however, i did see a problem with this patch on a different system
i meant to tell you about... ah, good, the console log is still handy:

radeondrmkmsfb0 at radeon0
radeon0: info: registered panic notifier
wsdisplay0 at radeondrmkmsfb0 kbdmux 1
panic: kernel diagnostic assertion "l->l_exlocks == 0" failed: file "/usr/src5/sys/sys/userret.h", line 87 53 exlocks held
cpu0: Begin traceback...
vpanic(c0ae3318,dc7f2f1c,dc7f2f9c,c083941d,c0ae3318,c0ab4a0d,c0ae32e0,c0ae32b4,57,35) at netbsd:vpanic+0x121
kern_assert(c0ae3318,c0ab4a0d,c0ae32e0,c0ae32b4,57,35,dc7f2f58,c0688593,0,c4acbd80) at netbsd:kern_assert+0x23
trap() at netbsd:trap+0xbae
--- trap (number 6) ---
bbbefe30:
cpu0: End traceback...
fatal breakpoint trap in supervisor mode
trap type 1 code 0 eip c022a654 cs 8 eflags 246 cr2 bbbefe30 ilevel 0 esp dc7f2f00
curlwp 0xc4ab2000 pid 1 lid 1 lowest kstack 0xdc7f02c0
Stopped in pid 1.1 (init) at    netbsd:breakpoint+0x4:  popl    %ebp

i didn't look any further right then, i just reverted the patch.

config options appear to be just DIAGNOSTIC and makeoptions DEBUG.


.mrg.