996825 - Crash in profile sampler

Status: RESOLVED WORKSFORME

(Core :: Gecko Profiler, defect)

Description

[Eric Rescorla (:ekr)]

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000000
[Switching to process 770 thread 0x931f]
JSScript::offsetToPC (this=0x11fd99448, offset=75) at jsscript.h:947
947	        JS_ASSERT(offset < length());
(gdb) bt
#0  JSScript::offsetToPC (this=0x11fd99448, offset=75) at jsscript.h:947
#1  0x000000010642e8b0 in js::ProfileEntry::pc (this=0x10f800cc0) at SPSProfiler.cpp:330
#2  0x0000000104c3722f in addProfileEntry (entry=@0x10f800cc0, aProfile=@0x1234a38b0, stack=0x10f800a00, lastpc=0x0) at TableTicker.cpp:345
#3  0x0000000104c2de06 in doSampleStackTrace (aStack=0x10f800a00, aProfile=@0x1234a38b0, sample=0x1208e9e08) at TableTicker.cpp:555
#4  0x0000000104c2dba6 in TableTicker::InplaceTick (this=0x1234a35f0, sample=0x1208e9e08) at TableTicker.cpp:634
#5  0x0000000104c2d97a in TableTicker::Tick (this=0x1234a35f0, sample=0x1208e9e08) at TableTicker.cpp:572
#6  0x0000000104c44613 in SamplerThread::SampleContext (this=0x125456f10, sampler=0x1234a35f0, thread_profile=0x1234a38b0) at platform-macos.cc:269
#7  0x0000000104c44432 in SamplerThread::Run (this=0x125456f10) at platform-macos.cc:222
#8  0x0000000104c3155c in ThreadEntry (arg=0x125456f10) at platform-macos.cc:103
#9  0x00007fff8b875772 in _pthread_start ()
#10 0x00007fff8b8621a1 in thread_start ()
(gdb) run

Comment 1

[Eric Rescorla (:ekr)]

I don't have STR for this. I was in the middle of a WebRTC call and it crashed.

Comment 2

[Wayne Mery (:wsmwk)]

Have you seen this since, under similar circumstances?

Comment 3

[Eric Rescorla (:ekr)]

No

Comment 4

[Marcela (Please NI request to Brindusa Tot)]

Closing this as resolved- worksforme, there were no crashes with this signature in the last 6 months.