The crash doesn't happen in Troubleshoot Mode.

https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode

Safe Mode is a troubleshooting mode that temporarily turns off hardware acceleration, resets some settings, and disables add-ons (extensions and themes), any userChrome.css/userContent.css files, and some other advanced features to help you assess whether these are causing the problem. If the problem goes away, that tells us one thing. If it does not, that tells us something else.

bp-c4c48207-a133-4c95-b337-0fd6b0210607 Signature: mozilla::ipc::FatalError | mozilla::dom::PContentChild::OnMessageReceived

Uptime 1 seconds

MOZ_CRASH Reason (Sanitized) : IPDL error: "Error deserializing 'SharedMemoryHandle[]'". abort()ing as a result.

Crash Reason SIGSEGV /SEGV_MAPERR

Available Virtual Memory 5,222,428,672 bytes (5.22 GB) Available Page File 0 bytes Available Physical Memory 1,264,271,360 bytes (1.26 GB)

This is for Sumo's Related Bugs 1686205 RESOLVED DUPLICATE Crash in [@ mozilla::ipc::FatalError | mozilla::dom::PContentChild::OnMessageReceived]

1664151 NEW --- Crash in [@ mozilla::ipc::FatalError | mozilla::ipc::IProtocol::HandleFatalError | mozilla::dom::PContentChild::OnMessageReceived] IPDL error: "Error deserializing 'SharedMemoryHandle[]'". abort()ing as a result.

Are you currently using a version from the repositories of your Linux distribution? Try the Firefox version from the official Mozilla server: https://www.mozilla.org/en-US/firefox/all/

This could be a memory issue from the talk on the bug report.

I called for more help.