Closed Bug 1558852 Opened 2 months ago Closed 2 months ago

Mozilla Firefox Nightly 69.0a1 (2019-06-12) crashes in [@ CheckCharsInCharRange ]

Categories

(Core :: XPConnect, defect, blocker)

69 Branch
x86_64
Windows 7
defect
Not set
blocker

Tracking

()

VERIFIED FIXED
mozilla69
Tracking Status
firefox-esr60 --- unaffected
firefox67 --- unaffected
firefox67.0.1 --- unaffected
firefox68 --- unaffected
firefox69 blocking verified

People

(Reporter: Virtual, Assigned: emk)

References

(Regression)

Details

(Keywords: crash, nightly-community, regression)

Crash Data

STR:

  1. Open some website pages in few tabs
    and wait some time to enjoy crash in [@ CheckCharsInCharRange ]

Crashlog report:
https://crash-stats.mozilla.org/report/index/ddef306f-dbc0-443f-92c2-06d000190612

Regression caused probably by:
Bug #1557254

Flags: needinfo?(VYV03354)
Has Regression Range: --- → yes
Has STR: --- → yes

Slightly different top of the stack but looks the same as bug 1558836 to me.

Note that without a JS stack it's unclear to me why this is crashing. Some JS setter is being called, but without someone catching this in a debugger I don't see how we can know which setter it is.

I don't suppose you have any idea about more specific steps to reproduce?

Flags: needinfo?(Virtual)

Unfortunately, I don't have reliable STR. I just opened few website pages in tabs. I went AFK for moment and when I came I encounter this crash. I tried to reproduce it with same website pages, but it didn't happen. It happens randomly and very rarely in my case.

Flags: needinfo?(Virtual)

I hit this crash twice today already, both times while the screensaver was running and I wasn't interacting with Firefox at all.
bp-a0d19645-1e7a-4914-acbb-5e0bb0190612
bp-67c571fb-04d8-4dc0-ad29-001e20190612

(Note that it was a parent process crash, so I needed to restart Firefox.)

I can't give a STR either but this crashes firefox straight away for me, I'm unable to start it (safe mode or not), sometimes I see the main window for a brief moment and sometimes not.

I also hit this crash twice on Nightly today, both times when I had left my machine unattended and I wasn't interacting with Firefox.
bp-21042dd9-e5e6-4c8b-b3d4-068d10190612
bp-f2537e80-9423-4482-b520-f88240190612

Bug 1557254 has been backed out and Nightly respins are underway.

Assignee: nobody → VYV03354
Status: NEW → RESOLVED
Closed: 2 months ago
Flags: needinfo?(VYV03354)
Resolution: --- → FIXED
Target Milestone: --- → mozilla69

Looks fixed. Thank you very much! \o/

Severity: critical → blocker
Status: RESOLVED → VERIFIED
Crash Signature: [@ CheckCharsInCharRange ] → [@ CheckCharsInCharRange ] [@ CheckCharsInCharRange(char16_t const*, unsigned int)]
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