On Julia 1.12.1 I just ran into a segfault for no apparent reason (I didn't ^C or anything):
(MyPkg) pkg> add LinearSolve@3
Resolving package versions...
Unexpected error 9 on netlink descriptor 34.
[933559] signal 6 (-6): Aborted
in expression starting at none:0
Allocations: 114568033 (Pool: 114562563; Big: 5470); GC: 144
Aborted (core dumped)
I realize that this won't be especially useful without an RR trace, but reporting anyway in case someone can figure out what went wrong from the debug info.