[haiku-bugs] [Haiku] #9842: x86-64 panics early in boot when built with KDEBUG_LEVEL 0
- From: "anevilyak" <trac@xxxxxxxxxxxx>
- Date: Sat, 29 Jun 2013 18:27:32 -0000
#9842: x86-64 panics early in boot when built with KDEBUG_LEVEL 0
---------------------------+------------------------------
Reporter: anevilyak | Owner: xyzzy
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: System/Kernel | Version: R1/Development
Keywords: | Blocked By:
Blocking: | Has a Patch: 0
Platform: x86-64 |
---------------------------+------------------------------
This only seems to occur with level 0 specifically ; levels 1 and 2 boot
normally here.
A screenshot of the panic screen is attached, along with a readelf dump of
the corresponding kernel image. As best as I can tell, the backtrace
leading up to the page fault itself was:
{{{
9 ffffffff81004e10 (+ 192) ffffffff80133568 memcpy_generic
10 ffffffff81004ed0 (+ 64) ffffffff800fe02e _ZL15write_to_bufferP11ri
11 ffffffff81004f10 (+ 16) ffffffff800fe324 ring_buffer_write
12 ffffffff81004f20 (+ 48) ffffffff8008dfa6 syslog_write
13 ffffffff81004f50 (+ 128) ffffffff8008ed4f debug_init_post_settings
14 ffffffff81004fd0 (+ 32) ffffffff8005d0d3 _start
}}}
This seems somewhat puzzling though, since debug_init_post_settings
doesn't in fact call syslog_write that I can see, so I may have done
something wrong on that front. This panic is 100% reproducible, so please
let me know if I can enable anything else to help get more information.
--
Ticket URL: <http://dev.haiku-os.org/ticket/9842>
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