Hi all,
I've got some brand-new CFNetwork code that, on the whole, has been
working very well. Today, without any visible provocation, the following
crash occurred. The top of the stack looks like this:
Exception: EXC_BAD_ACCESS (0x0001)
Codes: KERN_PROTECTION_FAILURE (0x0002) at 0x00000000
0 com.apple.CoreFoundation 0x9072e3ac CFArrayGetValueAtIndex + 56
1 com.apple.CFNetwork 0x90ef4928 _ExpireCacheEntries + 252
2 com.apple.CFNetwork 0x90ef44a8 _CreateLookup_NoLock + 292
3 com.apple.CFNetwork 0x90ef42c4 CFHostStartInfoResolution + 84
4 com.apple.CFNetwork 0x90ef3c7c _ScheduleAndStartLookup + 304
5 com.apple.CFNetwork 0x90ef3a98 _SocketStreamStartLookupForOpen_NoLock + 604
6 com.apple.CFNetwork 0x90ef377c _SocketStreamOpen + 264
7 com.apple.CoreFoundation 0x9075a5cc _CFStreamOpen + 116
8 com.apple.CoreFoundation 0x90797b84 CFReadStreamOpen + 148
Thread 5 crashed with PPC Thread State 64:
srr0: 0x000000009072e3ac srr1: 0x000000000000f030 vrsave: 0x0000000000000000
cr: 0x22008288 xer: 0x0000000000000004 lr: 0x000000009072e37c ctr: 0x000000009072e374
r0: 0x00000000069022f0 r1: 0x00000000f0315170 r2: 0x00000000a0728274 r3: 0x0000000000000000
r4: 0x0000000000000001 r5: 0x00000000f0315280 r6: 0x00000000ffffffff r7: 0x0000000000000000
r8: 0x0000000000000002 r9: 0x0000000000000010 r10: 0x0000000022200fdf r11: 0x00000000a0eef578
r12: 0x000000009072e374 r13: 0x0000000000000000 r14: 0x0000000000000000 r15: 0x0000000000000000
r16: 0x0000000000000000 r17: 0x0000000000000000 r18: 0x0000000000000000 r19: 0x00000000f0315280
r20: 0x00000000f0315210 r21: 0x00000000a0ef4834 r22: 0x00000000a0ef4834 r23: 0x00000000a0ef1ad4
r24: 0x0000000000000000 r25: 0x000000002217ef90 r26: 0x00000000f0315280 r27: 0x0000000000000002
r28: 0x0000000000000001 r29: 0x0000000000000000 r30: 0x00000000f0315210 r31: 0x000000009072e37c
I wouldn't go so far as to say that there's a bug in CFNetwork, because
I quite easily could have written a bug myself. However, it would be a
great help in diagnosing this if I knew where to start looking. Would it
be possible for anyone in the know to speculate as to what would cause
_ExpireCacheEntries to operate on a NULL CFArray, and how it might have
become so?
Thanks,
R.
--
Rich Siegel Bare Bones Software, Inc.
<email@hidden> <http://www.barebones.com/>
Someday I'll look back on all this and laugh... until they sedate me.
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