1266302 - crash in mozilla::AudioBlockCopyChannelWithScale_SSE

Status: RESOLVED WORKSFORME

(Core :: Web Audio, defect)

Description

[Nicholas Nethercote [inactive]]

This bug was filed from the Socorro interface and is 
report bp-b3c2e16b-1157-4183-8757-81b912160419.
=============================================================

New crash in Nightly 20160419030312. It's the #1 top crash builds since then, with 103 occurrences across 40 installations.

Seems likely that it's related to bug 1266047 and bug 1266112.

Comment 1

[Nicholas Nethercote [inactive]]

dminor, can you please investigate?

Comment 2

[Dan Minor [:dminor]]

This should be fixed by the patch in Bug 1266047 which hasn't been merged into central yet.

Comment 3

[Nicholas Nethercote [inactive]]

This crash hasn't been seen since since Nightly 20160422030223. Thank you for the fix.

Comment 4

[Nicholas Nethercote [inactive]]

dminor, this has returned in Nightly 20160502030207 with 18 occurrences, and a couple more in the subsequent Nightly, across several installations. Some examples:

https://crash-stats.mozilla.com/report/index/fe2f58ec-0743-497e-9cd8-1ba2b2160503
https://crash-stats.mozilla.com/report/index/9ba93fce-ab09-48bd-afe5-5bc782160504
https://crash-stats.mozilla.com/report/index/907e25ed-83e8-4b05-9cfc-e58e32160503

Any idea what might have happened?

Comment 5

[Dan Minor [:dminor]]

These are showing up because I removed extra alignment checks in Bug 1266112. It looks like Bug 1270055 is the underlying cause.

Comment 6

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

Is this now fixed by bug 1270055 ?

Comment 7

[Dan Minor [:dminor]]

I believe so, I don't see any crashes since build 20160505030327.