Messages in this thread | | | Date | Tue, 26 May 1998 00:47:23 +0200 | From | Andreas Haumer <> | Subject | Linux-2.0.34 & crashme |
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Hi Alan, hi all,
after spending days stress-testing my various Linux-machines (under Linux-2.0.34pre16) with heavy disk-I/O, network-I/O, high CPU-load, forking and flood-pinging, without a single hickup since the ISDN problems were solved, I went crazy: I remembered the famous "crashme" program, which creates and executes lots of illegal code.
Well, I tried it both as root and as unprivileged user, and guess what: Linux-2.0.34pre16 locked solid in both cases after just about 10 minutes... :-( No logfile-entry, no "oops" on the console, just dead!
I checked it with one of my HP-UX 10.20 machines, and it survived more than 1 hour before I stopped the "crashme" process.
I think I remember someone was claiming Linux is immune against these "crashme" programs? It's _very_ bad a normal, unprivileged user can lock the machine with crashme! Does anyone have other results with crashme & Linux-2.0.34 (be they better or worse)?
The DUT was system 3 (if you remember my previous test results), a big server machine with 16GB SW-RAID5, Dual 2940UW, 256MB RAM AMD K6-233, and I enabled almost every function when configuring the test kernel. I'll try it with a smaller kernel next time, just to see if it makes any difference...
- andreas
-- Andreas Haumer | email: andreas@xss.co.at | PGP key available *x Software + Systeme | phone: +43.1.6001508 | on request. Buchengasse 67/8 | +43.664.3004449 | A-1100 Vienna, Austria | fax: +43.1.6001507 |
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