2 ms·
IIUC steps 5-7 in the exploit cause around 2^32 oopses. I don't know much about the Linux kernel - could it perhaps have a limit on the number of oopses before
by azakai 4y ago
IIUC steps 5-7 in the exploit cause around 2^32 oopses. I don't know much about the Linux kernel - could it perhaps have a limit on the number of oopses before it halts the entire system?
The article explains why it is important to not do that in general, as an oops allows debugging and recovery etc. But 2^32 of them seems suspicious.
- roguebantha 4y agoYes, there is now an oops limit, specifically because of this technique - see the conclusion paragraph.
- azakai 4y agoAh, thanks! I should finish reading the entire article before commenting, sorry...
- spacepinball 4y agoYou'd think that be the rule; reflect, THEN discuss.
- roguebantha 4y agoTo the contrary, I appreciate azakai's enthusiasm for seeking solutions, and also credit the fact that they came up with exactly the same solution we used to mitigate the issue.