Both chrome and chrome-dev, and I have eliminated the possibility of custom flags and hard drive failure since I just got this SSD.
GPU is an r9-280x, CPU is an i5-4670, 8gb of RAM. Tabs open when it happened: 3. Chrome://flags are at stock values. This does not happen on gentoo, with the exact same profile copied over from solus.
Attached is the core dump (of a crash that happened a few days ago) and the dmesg output (current, tab crash).
Update: it outright crashed now.