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I've got a full-heap core dump from a dead process on an x86 Linux machine (kernel 2.6.35-22 if it matters), which I'm attempting to debug in GDB. Is there a GDB command I can use that means "show me a list of all the memory address regions allocated by this process?" In other words, can I figure out what all the possible valid memory addresses are that I can examine in this dump? The reason I ask is that I need to search across the entire process heap for a certain binary string, and in order to use the find command, I need to have a start and end address. Simply searching from 0x00 to 0xff.. doesn't work because find halts as soon as it encounters an address it can't access: (gdb) find /w 0x10000000, 0xff000000, 0x12345678 warning: Unable to access target memory at 0x105ef883, halting search. So I need to get a list of all the readable address regions in memory so I can search them one at a time. (The reason I need to do that is I need to find all the structs in memory that point at a certain address.) None of show mem , show proc , info mem , info proc seem to do what I need.

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