Comment 15 for bug 1217189
Revision history for this message
| danmb (danmbox) wrote Re: Buffer I/O error on device zram0 (possibly causing complete machine lockup) | #15 |
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1b1ed1a
(Get the code!)
@damian-sawicki: yes, but once such memory errors DO occur, I think your system is basically compromised; you don't know when it will crash (*) and you don't know what else gets corrupted before the lock-up (why not filesystem errors, security etc?). That's why I would cut this at the root.
(*) In practice, of course, the system seems to actually crash when under heavy swapping the erroneous block gets used (possibly when the page is swapped back into memory?) But this is like overclocking, you never know what parts of the system might break.
We need to figure out why there aren't more people affected by this issue and how to get developers involved. Perhaps we should mark this as a security problem (because memory errors usually DO lead to security problems, even if writing an exploit could be hard)