802105 - Flash-related crash [@ LzmaDec_DecodeReal ]

Status: RESOLVED INCOMPLETE

(Core Graveyard :: Plug-ins, defect)

Description

[Benoit Jacob [:bjacob] (mostly away)]

We have crashes with signature LzmaDec_DecodeReal, here is a crash-stats query:
https://crash-stats.mozilla.com/query/query?query_type=simple&do_query=1&query=LzmaDec_DecodeReal

Example crash report:
https://crash-stats.mozilla.com/report/index/0dfe92f6-48ae-42a0-952a-f470d2121013

Selena's data in bug 797068 shows that this is highly correlated to the GPU device ID being 0x1132 which is the very old Intel i815 integrated graphics.

Indeed, over 3 days, we got 105 crashes with this signature, all of which had this device ID without exception. Including all signatures, there had been 2491 crashes with this device ID.

The above crash report showed that no form of GPU acceleration had been used by Gecko ("D3D Layers-") so this can't be helped by GPU blacklisting on our side.

It is likely that Flash is trying to utilize the GPU there, and shouldn't. This may be worth reporting to Adobe.

Comment 1

[Benjamin Smedberg]

woot jeromie, we got one!

Comment 2

[Benoit Jacob [:bjacob] (mostly away)]

Strange as it is for over 100 crashes, I wonder if they might all come from the same unique machine. Indeed, all the crashes I see here have exact same characteristics (CPU, Windows version, Flash version, driver version).

Comment 3

[Robert Kaiser]

(In reply to Benoit Jacob [:bjacob] from comment #2)
> Strange as it is for over 100 crashes, I wonder if they might all come from
> the same unique machine. Indeed, all the crashes I see here have exact same
> characteristics (CPU, Windows version, Flash version, driver version).

Same install time on all of them, so yes, pretty surely the exact same installation. It's extremely unlikely that two people with a so similar system would install Firefox 14.0 at exactly the same second. ;-)

Comment 4

[Benjamin Smedberg]

From the duplicate data, this doesn't look like it's worth tracking.