This bug was filed from the Socorro interface and is report bp-ad5cdf89-a443-4791-8968-654652150207. ============================================================= This crash happens intermittently during page loading with dom.ipc.plugins.asyncInit set to true. A plugin is not being initialized in this stack, but I've only seen this crash happen in my profiles that have asyncInit enabled. Crash occurs both with e10s and non-e10s. Maybe one of the plugin experts could help interpret this stack?
25 crashes in Nightly since January 1st https://crash-stats.mozilla.com/signature/?date=%3E2015-01-01&version=38.0a1&signature=mozilla%3A%3Aplugins%3A%3APluginScriptableObjectParent%3A%3AGetPropertyHelper%28void*%2C+bool*%2C+bool*%2C+_NPVariant*%29&_columns=date&_columns=product&_columns=version&_columns=build_id&_columns=platform&_columns=reason&_columns=address&page=1
Are there any URLs that this occurs consistently with?
(In reply to Aaron Klotz [:aklotz] (please use needinfo) from comment #2) > Are there any URLs that this occurs consistently with? I can't reproduce it reliably but I've had this crash happen two more times today. All 3 times I had the Plugin Hang UI appear, I then clicked "Stop plugin" and then got the crash.
A call stack from the original hang that spawned the plugin hang ui would be very useful here.
Ok i'll keep an eye out
Created attachment 8561162 [details] [diff] [review] Better error checking The initial hang is still important to investigate for this bug, but this is a speculative fix that might help with the crashing.
Created attachment 8562518 [details] hangStack.txt I got another one of these hangs tonight. The Plugin Hang UI popped up, but then Firefox crashed before I could attach a debugger. I was able to reproduce the hang a second time, and this time I captured this main-thread stack while the Plugin Hang UI was still active. Obviously, I can't be 100% sure this is the same hang. When I resumed Firefox after a few minutes, it did not crash.
Related crash signature? https://crash-stats.mozilla.com/report/index/d5f0c7c7-27a3-4fdc-89c2-2a31c2150212
Created attachment 8563739 [details] [diff] [review] Check for null actor I compared a crash report from yesterdays build against the binaries of the build itself. Based upon the state of the registers in that crash dump I was able to deduce that the crash is due to a null actor, presumably due to plugin-container termination. This patch is not speculative; it will definitely eliminate the crashes for this signature.
(In reply to Vladan Djeric (:vladan) -- please needinfo! from comment #10) > Related crash signature? > https://crash-stats.mozilla.com/report/index/d5f0c7c7-27a3-4fdc-89c2- > 2a31c2150212 That looks like a content bug. There's a null pointer to the nsPluginInstanceOwner object. Please file separately.
2 years ago
Flagging checkin-needed for patch https://bugzilla.mozilla.org/attachment.cgi?id=8563739 https://treeherder.mozilla.org/#/jobs?repo=try&revision=e63c87f2adda
Socorro  shows zero crashes over the past 4 weeks.