[Openmcl-devel] Error in kernel

Sunil Mishra smishra at sfmishras.com
Thu Mar 8 06:40:29 UTC 2007


I found an actual error in my program. I was trying to access an unbound
inherited slot in a condition. But getting a kernel error for such a
problem is unexpected.

Sunil

Sunil Mishra wrote:
> Hi,
> 
> I am writing a web based application, threaded naturally, on top of
> hunchentoot (http://weitz.de/hunchentoot/). I'm writing on an intel mac
> with the 021407 snapshot updated to the latest CVS. Below is all the
> information I could gather. Let me know if you need any additional
> information, I'll be glad to get it to you.
> 
> Sunil
> 
> 
> 
> ? Unhandled exception 4 at 0x3000401ccccb, context->regs at #xb0f679c0
> ? for help
> [3741] OpenMCL kernel debugger: b
> current thread: tcr = 0x6048e0, native thread ID = 0x7f03, interrupts
> enabled
> 
> 
> (#x00000000044299D8) #x0000300042B47A14 : #<Anonymous Function
> #x0000300042B4796F> + 165
> (#x0000000004429A08) #x00003000404B947C : #<Function SIGNAL
> #x00003000404B8FEF> + 1165
> (#x0000000004429A60) #x00003000405700D4 : #<Function %ERROR
> #x000030004057005F> + 117
> (#x0000000004429A88) #x0000300042B3D6BC : #<Function CLASS-NOT-FOUND
> #x0000300042B3D65F> + 93
> (#x0000000004429AB0) #x0000300042B3D7B4 : #<Function PRESENT-CLASS
> #x0000300042B3D72F> + 133
> (#x0000000004429AE8) #x0000300042B47554 : #<Function body1830
> #x0000300042B4717F> + 981
> (#x0000000004429B30) #x0000300042B47E5C : #<Function PRESENT-OBJECT
> #x0000300042B47AAF> + 941
> (#x0000000004429BC0) #x0000300041F7C2CC : #<Function PROCESS-REQUEST
> #x0000300041F7B68F> + 3133
> (#x0000000004429D28) #x0000300041F7F47C : #<Function PROCESS-CONNECTION
> #x0000300041F7DCFF> + 6013
> (#x0000000004429EC8) #x000030004043D37C : #<Function
> RUN-PROCESS-INITIAL-FORM #x000030004043D0BF> + 701
> (#x0000000004429F48) #x000030004043DCFC : #<Anonymous Function
> #x000030004043DB6F> + 397
> (#x0000000004429F98) #x00003000403F5D4C : #<Anonymous Function
> #x00003000403F5BDF> + 365
> [3741] OpenMCL kernel debugger: l
> %rsi (arg_z) = 9
> %rdi (arg_y) = #<5-element vector subtag = 75 @#x0000300042C2871D
> (SLOT-VECTOR)>
> %r8  (arg_x) = #<3-element vector subtag = 86 @#x0000300042B3F13D
> (INSTANCE)>
> ------
> %r13 (fn) = #<Function %MAYBE-STD-SLOT-VALUE-USING-CLASS #x00003000401CC98F>
> %r10 (ra0) = tagged return address: #<Anonymous Function
> #x0000300042B4796F> + 165
> ------
> %r15 (save0) = #<3-element vector subtag = 86 @#x0000300042B3EDFD
> (INSTANCE)>
> %r14 (save1) = 2
> %r12 (save2) = #<3-element vector subtag = 86 @#x0000300042C286FD
> (INSTANCE)>
> %r11 (save3) = ERROR
> ------
> %rbx (temp0) = #(() #<3-element vector subtag = 86 @#x0000300042B3EE9D
> (INSTANCE)> #<3-element vector subtag = 86 @#x0000300042B3EDFD
> (INSTANCE)> #<3-element vector subtag = 86 @#x0000300042B3ED5D
> (INSTANCE)> #<3-element vector subtag = 86 @#x0000300042B3ECBD (INSTAN...
> %r9  (temp1) = #<Anonymous Function #x0000300042B3E5EF>
> %rcx (temp2) = #<imm #x0000000000000022>
> ------
> [3741] OpenMCL kernel debugger: r
> rax = 0x0000000000000028      r8  = 0x0000300042B3F13D
> rcx = 0x0000000000000022      r9  = 0x0000300042B3E5EF
> rdx = 0x0000000000000002      r10 = 0x0000300042B47A14
> rbx = 0x0000300042B3E70D      r11 = 0x00000000000031AE
> rsp = 0x00000000044299A8      r12 = 0x0000300042C286FD
> rbp = 0x00000000044299D8      r13 = 0x00003000401CC98F
> rsi = 0x0000000000000048      r14 = 0x0000000000000010
> rdi = 0x0000300042C2871D      r15 = 0x0000300042B3EDFD
> rip = 0x00003000401CCCCB   rflags = 0x0000000000000246
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