Build: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b8pre) Gecko/20101007 Firefox/4.0b8pre This is a new crash signature. Crashes first appeared in b7pre/20100929 build. It is #130 top crasher in b7pre build for the last week. Signature js::gc::MarkChildren UUID d3cc13dc-0617-45f3-8ef4-80c2f2101007 Time 2010-10-07 09:15:33.3146 Uptime 56 Last Crash 77 seconds before submission Install Age 87 seconds since version was first installed. Product Firefox Version 4.0b8pre Build ID 20101007042624 Branch 2.0 OS Windows NT OS Version 6.1.7600 CPU x86 CPU Info GenuineIntel family 6 model 15 stepping 6 Crash Reason EXCEPTION_ACCESS_VIOLATION_WRITE Crash Address 0x0 App Notes AdapterVendorID: 10de, AdapterDeviceID: 0422 Frame Module Signature [Expand] Source 0 @0x9c8b1fb 1 mozjs.dll js::gc::MarkChildren js/src/jsgcinlines.h:199 2 mozjs.dll js::gc::MarkObject js/src/jsgcinlines.h:179 3 mozjs.dll fun_trace js/src/jsfun.cpp:2085 4 mozjs.dll js_TraceObject js/src/jsobj.cpp:6175 The regression range is: http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=c257bfb8cad0&tochange=a60414d076b5 More reports at: http://crash-stats.mozilla.com/report/list?product=Firefox&query_search=signature&query_type=exact&query=&range_value=4&range_unit=weeks&hang_type=any&process_type=any&plugin_field=&plugin_query_type=&plugin_query=&do_query=1&admin=&signature=js%3A%3Agc%3A%3AMarkChildren
It is #31 top crasher in 4.0b8 for the last week.
It is #35 top crasher in 4.0b11.
I have had this crash today with Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:5.0a2) Gecko/20110515 Firefox/5.0a2 ID:20110515042002 Crash report: bp-7559beb0-88eb-4b9f-b820-0e1332110520 Firefox crashed while it was in the background.
OS: Windows 7 → All
Hardware: x86 → All
It is #37 top crasher in 4.0.1 and #7 top crasher in 5.0b2
tracking-firefox5: --- → ?
the volume has increased quite a bit on 4.0.1 in the last few weeks. not sure if this reflects a regression in 4.0.1 or just migration of users up from 3.6, or both. here are some snapshots of a few days in may showing that growth. js::gc::MarkChildren date total breakdown by build crashes count build, count build, ... 20110501 267 159 4.0.12011041322, 62 4.02011031805, 15 4.0b112011020314, 8 4.0b122011022221, 4 4.0b82010121417, 4 4.0b102011012116, 3 5.0a22011050104, 3 5.0a22011043004, 3 4.0b72010110414, 1 5.0a22011042904, 1 4.2a1pre2011041203, 1 4.0b92011011019, 1 4.0b122011022200, 1 4.0.1pre2011041103, 1 4.02011030319, 20110508 331 255 4.0.12011041322, 27 4.02011031805, 14 4.0b112011020314, 9 4.0b122011022221, 6 4.0b92011011019, 6 4.0b102011012116, 3 5.02011042714, 3 4.0b82010121417, 2 6.0a12011042603, 2 5.0a22011050804, 2 4.0b72010110414, 1 5.0a22011050204, 1 4.02011030319, 20110509 383 307 4.0.12011041322, 26 4.02011031805, 10 4.0b112011020314, 7 5.02011042714, 6 5.0a22011050804, 6 4.0b82010121417, 6 4.0b122011022221, 4 4.0b92011011019, 3 5.0a22011050904, 3 4.0b72010110414, 3 4.0b102011012116, 1 5.0a22011050404, 1 5.0a22011042204, --- 20110524 640 436 4.0.12011041322, 114 5.02011051719, 28 5.02011042714, 23 4.02011031805, 8 4.0b112011020314, 5 4.0b92011011019, 4 5.0a22011052304, 4 4.0b122011022221, 3 5.0a22011052404, 3 5.0a22011052204, 3 4.0b82010121417, 2 4.2a1pre2011041203, 2 4.0b72010110414, 1 5.0a22011051904, 1 5.0a22011051004, 1 4.0b102011012116, 1 4.0.12011041400, 1 4.02011030319,
This probably should be on the list in bug 613650.
We are going to + this because there is a clear regression to deal with and I think we need to look at making 5 more stable.
tracking-firefox5: ? → +
I tried to look into when this had a volume regression on trunk or 5.0, but that's really hard to find out as it had one-digit numbers on trunk most of the time and fluctuations there are hard to analyze. From 4.0b13pre builds to the end of April on trunk, the rate stayed about the same, in the 1-digit range on crashes and topcrash ranks in double digits. On aurora, with even fewer people testing, the crash rate is about the same, the rank going into the top 10 at times, though. In the first 5.0 beta build though, which actually is a 04-27 aurora build, this was a top 10 crasher all along. What's remarkable on trunk though is that on 2011-04-30 it seemed to change the signature to js::gc::MarkChildren(JSTracer*, js::Shape const*) and even since a few days before then, this signature barely shows up any more on Nightly builds - in fact we only have only one single crash report in js::gc::MarkChildren with a 6.0a1 build on a higher build ID than 20110509030631 - that one being bp-e1485f28-c875-4ae5-93fc-d2dfc2110515 with a nightly from the 15th but since then, we don't have any at all in 6.0a1 or 7.0a1 - will be interesting what Aurora 6 looks like (and I really hope we'll get Aurora to eclipse Nightly in ADUs one day, as right now it's the other way round, which makes crash analysis herd).
I spoke to dmandelin about this...his comments - This is one of the GC bug signatures. It can't be solved in the short term, because the cause of the crash is arbitrarily far in time and code from the point of the crash. I generally try to persuade people not to bother with these. Bill and I have some ideas for trying to attack it, but they are all heavyweight diagnostics that send back tiny bits of info". Removing the tracking flag since we can't do much for FF5.
tracking-firefox5: + → ---
Crash Signature: [@ js::gc::MarkChildren ]
FWIW, js::gc::MarkChildren is #6 crash for Thunderbird 5. Of those users who we've had contact with a) most had many crash signatures, most notably UnmarkGrayChildren (our #1 crash) b) TB6 resolved their crashes So for thunderbird, it would seem js::gc::MarkChildren is gone due to Bug 660778 - Stack Overflow Crash - whose patch is in TB6 beta 1. (js::gc::MarkChildren does seem arbitrary. But for completeness js::gc::MarkChildren with recent activity are: bug 643839 landed in T5 5/FF 5, bug 649152 hasn't landed)
Occurs in Mobile, but I'm uncertain if it's the same issue : https://crash-stats.mozilla.com/report/list?range_value=7&range_unit=days&date=2011-11-06&signature=js%3A%3Agc%3A%3AMarkChildren&version=Fennec%3A10.0a1
It happens at a very low volume: * 84 crashes in 22.0 * 4 in 23.0b9
Crash Signature: [@ js::gc::MarkChildren ] → [@ js::gc::MarkChildren ] [@ js::gc::MarkChildren(JSTracer*, js::types::TypeObject*) ] [@ js::gc::MarkChildren(JSTracer*, JSObject*) ] [@ js::gc::MarkChildren(JSTracer*, JSScript*) ] [@ js::gc::MarkChildren(JSTracer*, js::Shape const*) ]
Summary: crash [@ js::gc::MarkChildren ] → crash in js::gc::MarkChildren
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