User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:100.0) Gecko/20100101 Firefox/100.0

Steps to reproduce:

Run Nightly and exit it.

Actual results:

The journal contains a coredump notification.

Core was generated by `/opt/nightly/firefox-bin -contentproc -parentBuildID 20211201050507 -prefsLen 7'.
Program terminated with signal SIGSYS, Bad system call.
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
38	../sysdeps/unix/sysv/linux/x86_64/syscall.S: Datei oder Verzeichnis nicht gefunden.

(gdb) bt
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f9ae216e1fc in mozilla::SandboxCrash(int, siginfo_t*, void*, void const*) () at /opt/nightly/libxul.so
#2  0x00007f9aee04b4ca in mozilla::SigSysHandler(int, siginfo_t*, void*) () at /opt/nightly/libmozsandbox.so
#3  0x00007f9aee00e8e0 in <signal handler called> () at /lib/x86_64-linux-gnu/libpthread.so.0
#4  __pthread_setaffinity_new (th=<optimized out>, cpusetsize=128, cpuset=0x7f9aed77dd10) at pthread_setaffinity.c:36
#5  0x00007f9adf492753 in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#6  0x00007f9adf491ec7 in  () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#7  0x00007f9aee003eae in start_thread (arg=0x7f9aed77e640) at pthread_create.c:463
#8  0x00007f9aedbc0a5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Expected results:

No crash should happen.

The Bugbug bot thinks this bug should belong to the 'Core::Security: Process Sandboxing' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.