In other words up to 10% of all the crashes Firefox users see are not software bugs, they're caused by hardware defects! If I subtract crashes that are caused by resource exhaustion (such as out-of-memory crashes) this number goes up to around 15%. This is a bit skewed because users with flaky hardware will crash more often than users with functioning machines, but even then this dwarfs all the previous estimates I saw regarding this problem. 3/5

@gabrielesvelto I don't have any numbers on this, but anecdotally, this seems to match with the experience from btrfs. The filesystem does a lot of consistency checking, and is very good at detecting corruption from bad hardware. We see a lot of problem reports on IRC where we can confidently identify it as bad hardware.

It's not always the RAM. Sometimes it's the power supply, or power regulation on the motherboard: the "bad bits" move around in those cases.

And then there's the disks...

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