I can confirm that this is somehow related to GPU because when I
disabled hardware acceleration in Chrome settings the system has been
stable for 100 days. When GPU hardware acceleration is enabled, the
system crashes randomly, sometimes within hours, sometimes in a couple
of days. I'm pretty sure
$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 58
model name : Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz
stepping: 9
microcode : 0x21
cpu MHz : 3147.576
cache size : 6144 KB
physical id : 0
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