429758 - Hang [@ JS_GetPrototype] with Flash

Status: RESOLVED DUPLICATE of bug 429903

(Core Graveyard :: Plug-ins, defect)

Description

[Bob Clary [:bc] (inactive)]

I have been getting random hangs with recent Minefield builds on Centos5 x86_64 with 32bit Minefield builds and Flash 9 r124. I do have Flash restricted in terms of what it can write to the local disk.

Attaching to the processing and breaking show stacks very similar to:

#0  0xf72fff99 in JS_GetPrototype () from libmozjs.so
#1  0xf78fc5f9 in gfxFlattenedPath::Release () from libxul.so
#2  0xf78fd696 in gfxFlattenedPath::Release () from libxul.so
#3  0xf7545633 in std::vector<unsigned short, std::allocator<unsigned short> >::resize () from libxul.so
#4  0xf7545505 in std::vector<unsigned short, std::allocator<unsigned short> >::resize () from libxul.so
#5  0xf752ff20 in std::vector<unsigned short, std::allocator<unsigned short> >::resize () from libxul.so
#6  0xf7532388 in std::vector<unsigned short, std::allocator<unsigned short> >::resize () from libxul.so
#7  0xf7540cd6 in std::vector<unsigned short, std::allocator<unsigned short> >::resize () from libxul.so
#8  0xf753ca9f in std::vector<unsigned short, std::allocator<unsigned short> >::resize () from libxul.so
#9  0xf7cb6b49 in NS_InvokeByIndex_P () from libxul.so
#10 0xf779a82a in gfxTextRunFactory::Release () from libxul.so
#11 0xf779a575 in gfxTextRunFactory::Release () from libxul.so
#12 0xf7611be7 in std::vector<unsigned short, std::allocator<unsigned short> >::resize () from libxul.so
#13 0xf7b27a08 in gfxMatrix::operator* () from libxul.so
#14 0xf7b2606e in gfxMatrix::operator* () from libxul.so
#15 0xf7b21ca0 in gfxMatrix::operator* () from libxul.so
#16 0xf7b1e714 in gfxMatrix::operator* () from libxul.so
#17 0xf7b1e8cf in gfxMatrix::operator* () from libxul.so
#18 0xf0a0b68e in Flash_EnforceLocalSecurity () from .mozilla/plugins/libflashplayer.so
#19 0x0b624218 in ?? ()
#20 0xeedb3800 in ?? ()
#21 0x00000000 in ?? ()

I have no idea why there is a null pointer at the bottom of the stack.

bretr can also preproduce on Mac OS X although I have not been able to do so as of yet.

Comment 1

[Bret Reckard]

Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9pre) Gecko/2008042104 Minefield/3.0pre

I'm sorry to say, but Adblock Plus 0.7.5.4 seems to be the culprit for my OSX hang.  Once disabled, Flash seems to not be an issue.

Comment 2

[Justin Dolske [:Dolske]]

This looks like the same stack as in 429903, duping.