site_archiver@lists.apple.com Delivered-To: darwin-kernel@lists.apple.com User-agent: Microsoft-Entourage/11.1.0.040913 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 _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.a... This email sent to site_archiver@lists.apple.com