Re: mulckPatch_eieio
Re: mulckPatch_eieio
- Subject: Re: mulckPatch_eieio
- From: Godfrey van der Linden <email@hidden>
- Date: Wed, 25 May 2005 12:22:45 -0700
Looks like a double panic to me.
The first panic is significant not the second one.
Check out whatever function '0x002302EC' is in this kernel, as it is
being passed in a NULL pointer.
Godfrey
On 05/25/2005, at 11:59 , Eric Long wrote:
Hi,
Can anyone explain what mulckPatch_eieio is and what might cause a
panic to
occur within it?
We have a socket layer NKE that exhibits a problem related to it.
On the
first run of a particular third party application, providing it's
never been
run before on the machine, on 10.3.x systems, we see a panic.
The backtrace shows this:
#0 0x0008da08 in mulckPatch_eieio ()
#1 0x00017cec in ipc_port_release_sonce ()
#2 0x00236c50 in connect ()
#3 0x00246d84 in unix_syscall ()
#4 0x000941c0 in shandler ()
#5 0x000392f0 in zone_page_alloc ()
Cannot access memory at address 0xbfffd770
It's difficult to reproduce and only seems to occur in this one
obscure
instance. Our NKE intercepts the connect() and puts it on hold
temporarily,
It then allows the connect to proceed normally. But then things go
boom.
It never happens again with the app. We have never seen it happen
anywhere
else.
The panic log shows:
Unresolved kernel trap(cpu 0): 0x300 - Data access
DAR=0x0000000000000011
PC=0x00000000002302EC
Latest crash info for cpu 0:
Exception state (sv=0x22095C80)
PC=0x002302EC; MSR=0x00009030; DAR=0x00000011; DSISR=0x40000000;
LR=0x0023030C; R1=0x11FEBE30; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x0023030C 0x0023518C 0x002452B4 0x00094200 0x00090009
Proceeding back via exception chain:
Exception state (sv=0x22095C80)
previously dumped as "Latest" state. skipping...
Exception state (sv=0x24A30780)
PC=0x90031C6C; MSR=0x0200F030; DAR=0x0089A008; DSISR=0x42000000;
LR=0x30844AFC; R1=0xBFFFD750; XCP=0x00000030 (0xC00 - System call)
panic(cpu 0): 0x300 - Data access
Latest stack backtrace for cpu 0:
Backtrace:
0x000836E4 0x00083BC8 0x0001EDA4 0x00090C60 0x0009406C
Proceeding back via exception chain:
Exception state (sv=0x22095C80)
PC=0x002302EC; MSR=0x00009030; DAR=0x00000011; DSISR=0x40000000;
LR=0x0023030C; R1=0x11FEBE30; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x0023030C 0x0023518C 0x002452B4 0x00094200 0x00090009
Exception state (sv=0x24A30780)
PC=0x90031C6C; MSR=0x0200F030; DAR=0x0089A008; DSISR=0x42000000;
LR=0x30844AFC; R1=0xBFFFD750; XCP=0x00000030 (0xC00 - System call)
Thoughts?
Thanks in advance,
Eric Long
______________________________________________________________________
_____
Macintosh Software Engineer
Allume Systems, Inc. http://www.allume.com
245 Westridge Drive, Watsonville, CA 95076 (831) 761-6200 x628
N 36° 54.768 W 121° 46.990
Matt. 11:28
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