Incomprehensible crash report, Memory access in the middle of valid range!
Incomprehensible crash report, Memory access in the middle of valid range!
- Subject: Incomprehensible crash report, Memory access in the middle of valid range!
- From: Jeremy Sagan <email@hidden>
- Date: Sun, 16 Sep 2012 17:01:56 -0400
I received a crash report from a user. The crash is in a Coreaudio
callback.
I don't understand this crash report as the invalid address is
directly in the middle of the shared memory range.
Isn't 0x000000000391f000 in the middle of
0000000003917000-0000000003920000?
Does this indicate bad memory or is there something I am not
understanding here?
Date/Time: 2012-09-16 08:19:51.899 -0500
OS Version: Mac OS X 10.7.4 (11E53)
Report Version: 9
Interval Since Last Report: 2174245 sec
Crashes Since Last Report: 56
Per-App Interval Since Last Report: 170275 sec
Per-App Crashes Since Last Report: 50
Anonymous UUID: 46BA7954-E28C-4893-
B31D-6B8D86DAF626
Crashed Thread: 23 com.apple.audio.IOThread.client
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x000000000391f000
VM Regions Near 0x391f000:
VM_ALLOCATE 0000000003915000-0000000003917000 [ 8K]
rw-/rwx SM=PRV
--> shared memory 0000000003917000-0000000003920000 [ 36K]
rw-/rw- SM=SHM
CG shared images 0000000003924000-000000000392c000 [ 32K]
rw-/rw- SM=SHM
Application Specific Information:
objc[847]: garbage collection is OFF
<snip>
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