Collection of random crashes

jacco · Post by **jacco** » 2026-06-10, 08:54

Still crashing with 34.3.01, will do some mroe checking later.

Post by **Moonchild** » 2026-06-10, 09:18

Hmm.
For those still experiencing crashes, can you post a stacktrace?

jacco · Post by **jacco** » 2026-06-10, 09:58

My stacktrace, but it was not with a fresh profile, I'll try to test that later today.

dinosaur · Post by **dinosaur** » 2026-06-10, 10:03

Moonchild wrote: ↑
2026-06-10, 09:18
For those still experiencing crashes, can you post a stacktrace?

That won't help (no symbol in binary). It just crashes somewhere in libxul.so.

However, I already posted the messages PM spits out in the console (when started from it) when crashing: there's apparently a NaN happening and that could be the root cause of the issue.

As for the Inspector issue, PM does not crash per se (it just freezes), and here again, even running PM under gdb and interrupting it when it freeze, I'd just get a bunch of hexadecimal addresses without any function name in the backtrace. Also, the Inspector issue happens as well with PM 34.2

To get useful stack traces under Linux with a release build (i.e. a binary without debug symbols), you'd need to implement an exception handler using ELFIO to decode the addresses on the stack and print the corresponding trace with function/method names in a text file before bailing out.

Post by **Moonchild** » 2026-06-10, 10:59

Well, not very helpful to pinpoint, but helpful enough to point out it's a different crash than what was focused on for the point release (since fontconfig is called low in the stack).
So yeah, this is something else. Feel free to open an issue on the issue tracker with as much detail as possible. if possible reproduce it with a locally built version of the browser so you have the symbols available.

dinosaur · Post by **dinosaur** » 2026-06-10, 20:05

Moonchild wrote: ↑
2026-06-10, 10:59
if possible reproduce it with a locally built version of the browser so you have the symbols available.

Can't happen to get the build system to generate or not strip debug symbols. I did add ac_add_options --enable-debug-symbols and ac_add_options --disable-install-strip to .mozconfig but to no avail.

Sessh · Post by **Sessh** » 2026-06-10, 20:33

dinosaur wrote: ↑
2026-06-09, 08:04
In the same vein, browse to the Second Life forums (from a blank profile) and press CTRL SHIFT C to open the Inspector: total freeze of PM.

I can also repro this with 34.3.0.1.

adoxa · Post by **adoxa** » 2026-06-11, 00:14

I reported the inspector freeze a while ago.

dinosaur · Post by **dinosaur** » 2026-06-11, 14:08

adoxa wrote: ↑
2026-06-11, 00:14
I reported the inspector freeze a while ago.

Indeed, when disabling layout.css.nesting.enabled, the freeze does not happen. Same bug then. Likely an infinite loop somewhere when encountering a nested CSS item.

Post by **Moonchild** » 2026-06-11, 14:38

Filed Issue #3119 (UXP)

Sessh · Post by **Sessh** » 2026-06-11, 19:59

FWIW, I do open up devtools semi-frequently and that site was the first one I saw that causes a crash, so that site must be doing something that not every site does that breaks PM's CSS pre-processing?

jacco · Post by **jacco** » 2026-06-11, 21:00

No more crashes on Duckduckgo for me. I haven't tried Google Sheets again, since that also now crashes in Firefox, so I guess the problem is on Google's end, they probably did something nasty for non-Chrome browsers again.

dinosaur · Post by **dinosaur** » 2026-06-13, 09:50

FYI, the crash described here also happens with PM 34.3.0.1 under Windows (just reproduced it: I boot Windows so rarely that I did not try it before).

Dont kiss your hedgehog · Post by **Dont kiss your hedgehog** » 2026-06-22, 13:29

Opening any New York Times page almost always crashes pm.

dinosaur · Post by **dinosaur** » 2026-06-24, 18:47

I'm afraid the crash described here is still impacting PM 34.3.1...

Post by **Night Wing** » 2026-06-24, 19:02

Dont kiss your hedgehog wrote: ↑
2026-06-22, 13:29
Opening any New York Times page almost always crashes pm.

Since you didn't provide a link, I hope I have the correct site.

I went to the NY Times site, chose a topic on their main page and went to open that page. My 64 bit linux (GTK3) Pale Moon 34.3.1 running in 64 bit MX Linux 25.2 (Infinity) Xfce did not crash. What it did do was put up an ad for my email address.

I tried a second page and the same thing happened. Ditto for a third page. The screenshot for it is below.

Dont kiss your hedgehog · Post by **Dont kiss your hedgehog** » 2026-06-25, 14:09

I've had many pm crashes today with New York Times pages. They are not consistent. Load a page. Crash. Restore. Loads Ok.
This page crashed pm after loading correctly 5 times:
https://www.nytimes.com/2026/06/25/opin ... 265c8287f2
and this one:
https://www.nytimes.com/2026/06/23/us/t ... 265c8287f2

This hint from moonchild is very helpful. Crashes are less annoying, just restore and go:

"What you want is setting the preference browser.sessionstore.max_resumed_crashes to 0 -- this prevents automatic session restoration after a crash or unexpected shutdown, and immediately shows the about:sessionrestore next startup. The default for this is 1, meaning it will try to automatically restore the session once before the sessionrestore page is shown, which is what you don't seem to want for your workflow."

Win11
pm 34.3.1 64bit

UCyborg · Post by **UCyborg** » 2026-06-29, 09:24

Yay, another crash, after navigating away from GitHub, in mozjs.dll: 0x38f758, code 0x00000005

This is in Nuck-TH's SSE2 build version 34.3.1. Looks like I don't have dump generation working on this Windows installation, so nothing else to go off.

Octopuss · Post by **Octopuss** » 2026-07-06, 09:30

Got a crash after quite some time when opening https://sym.gg/legacy/index.html?game=b ... comparison.
Dump uploaded.

Code: Select all

Faulting application name: palemoon.exe, version: 6.9.0.9669, time stamp: 0x6a3981ec
Faulting module name: mozjs.dll, version: 0.0.0.0, time stamp: 0x6a39835a
Exception code: 0xc0000005
Fault offset: 0x000000000013245d
Faulting process id: 0x3FAC
Faulting application start time: 0x1DD0B8B755F6064
Faulting application path: C:\Program Files\Pale Moon\palemoon.exe
Faulting module path: C:\Program Files\Pale Moon\mozjs.dll
Report Id: 83b12b39-6692-4559-9817-4c5c08367d6c
Faulting package full name: 
Faulting package-relative application ID:

troubleshooting information

AppCrashView

Post by **Night Wing** » 2026-07-06, 13:51

Octopuss wrote: ↑
2026-07-06, 09:30
Got a crash after quite some time when opening https://sym.gg/legacy/index.html?game=b ... comparison.

I cannot get the SYM site to crash. This includes opening and closing the tab for the site multiple times. The screenshot of it is below.

At the time of this posting I am using 64 bit (GTK3) linux Pale Moon 34.3.1 running in 64 bit MX Linux 25.2 (Infinity) Xfce. This also includes having uBlock Origin 1.16.6.1 enabled for the site.

Pale Moon forum

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