Description of problem:
I logged into my user account.

This system is mostly a server accessed via SSH. I sometimes log into a GUI session.

Because it is a server, overcommit is disabled. I believe this is part of the problem since what I've read about "gigacage" it wants 100 GB of virtual RAM.

It should have a fallback plan because it cannot have 100 GB.

Version-Release number of selected component:
evolution-3.26.6-1.fc27

Additional info:
reporter:       libreport-2.9.3
backtrace_rating: 4
cmdline:        /usr/libexec/evolution/evolution-alarm-notify
crash_function: Gigacage::<lambda()>::operator()
executable:     /usr/libexec/evolution/evolution-alarm-notify
journald_cursor: s=25008ffaca9a431fa395d85cac4284fa;i=152e16f;b=2ee100f00efd4b0fa498a46dacc18d0d;m=7fef6a61ae;t=56a6728de2e6b;x=bc5badd1559c20c3
kernel:         4.15.15-300.fc27.x86_64
rootdir:        /
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 Gigacage::<lambda()>::operator() at /usr/src/debug/webkitgtk4-2.20.1-1.fc27.x86_64/Source/bmalloc/bmalloc/Gigacage.cpp:155
 #1 std::__invoke_impl<void, Gigacage::ensureGigacage()::<lambda()> > at /usr/include/c++/7/bits/invoke.h:60
 #2 std::__invoke<Gigacage::ensureGigacage()::<lambda()> > at /usr/include/c++/7/bits/invoke.h:95
 #3 std::<lambda()>::operator() at /usr/include/c++/7/mutex:672
 #5 std::<lambda()>::_FUN(void) at /usr/include/c++/7/mutex:677
 #6 __pthread_once_slow at pthread_once.c:116
 #7 __gthread_once at /usr/include/c++/7/x86_64-redhat-linux/bits/gthr-default.h:699
 #8 std::call_once<Gigacage::ensureGigacage()::<lambda()> > at /usr/include/c++/7/mutex:684
 #9 Gigacage::ensureGigacage at /usr/src/debug/webkitgtk4-2.20.1-1.fc27.x86_64/Source/bmalloc/bmalloc/Gigacage.cpp:108
 #10 bmalloc::Heap::Heap at /usr/src/debug/webkitgtk4-2.20.1-1.fc27.x86_64/Source/bmalloc/bmalloc/Heap.cpp:58