grsecurity forums

Hi,

at the moment i am encounter following problem if i visit specific websites:

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[66750.873917] grsec: Invalid alignment/Bus error occurred at 0000031d9ef20028 in /usr/lib64/chromium-browser/chrome[chrome:9878] uid/euid:1000/1000 gid/egid:1000/1000, parent /usr/lib64/chromium-browser/chrome[chrome:8474] uid/euid:1000/1000 gid/egid:1000/1000

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[66750.873943] grsec: bruteforce prevention initiated for the next 30 minutes or until service restarted, stalling each fork 30 seconds.  Please investigate the crash report for /usr/lib64/chromium-browser/chrome[chrome:9878] uid/euid:1000/1000 gid/egid:1000/1000, parent /usr/lib64/chromium-browser/chrome[chrome:8474] uid/euid:1000/1000 gid/egid:1000/1000

For example the chrome extension webpage. This bug seems to be reproducible.

Regards Zaolin

1. can you post your kernel config?
2. if you have UDEREF enabled, can try without it?
3. what sites trigger this?

Do you have paxmarks on your chromium executable? I got similar errors without paxmarks (iirc -m on the chrome binary is sufficient).
I'm on chromium 32.x right now and have no issues with pax if the binary is marked correctly...

Edit: To make it sure: I'm on Gentoo and normally use the beta releases: 29.x also worked fine.