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mmap(0,,,MAP_FIXED,,) is *useful*mmap(0,,,MAP_FIXED,,) is *useful*Posted Jul 17, 2009 19:39 UTC (Fri) by iabervon (subscriber, #722)In reply to: mmap(0,,,MAP_FIXED,,) is *useful* by jreiser Parent article: Linux 2.6.30 exploit posted
It's not the address space of the debugger, it's the process being debugged, right? So you wouldn't actually have any code running while the processor has a mapping in the TLB at address zero, because fraid is stopped and gdb is probing it indirectly. So you wouldn't care if any process which has a mapping at address zero has lousy performance on return from interrupt or system call.
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