[haiku-bugs] Re: [Haiku] #10259: CDDA-related KDL: ASCII string corrupts kernel structures
- From: "ttcoder" <trac@xxxxxxxxxxxx>
- Date: Wed, 27 Nov 2013 22:17:13 -0000
#10259: CDDA-related KDL: ASCII string corrupts kernel structures
-------------------------+----------------------------
Reporter: ttcoder | Owner: nobody
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: - General | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
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Comment (by ttcoder):
Regarding that part of the backtrace,
{{{
_user_stop_notifying + 0x84
}}}
I'm getting the feeling that the code has "gone into the weeds". It makes
no sense that it would take 130+ bytes of machine code to implement a two-
line C function when it takes less than 60 bytes for stop_watching(), and
reading the disassembly for stop_watching() makes sense to me (with some
effort) whereas the disassembly for the purported user_stop_notifying()
makes no sense at all; so that would support the "gone crazy" idea but
maybe I'm missing something..
If reg.IP has gone to the weeds then nothing can be trusted in the
registers and the stack pointer ..etc and it will be very difficult to
determine what went wrong from this KDL... and I'm fscked again, sigh.
--
Ticket URL: <http://dev.haiku-os.org/ticket/10259#comment:4>
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