FMEM and DD segmentation fault


banderas20

New Member
Apr 23, 2019
5
Ratings
3
3
#1
Hi all,

I am trying to acquire a live memory dump from an Ubuntu system. This is what I do:

1. Download fmem tool
2. Compile it with make and run ./sh
3. A /dev/fmem is created

I know this is a special file and I have to specify the size for dd. However, I either end up with a small file or I get a Segmentation Fault error:

The RAM is 2GB size. My commands are:

Code:
dd if=/dev/fmem of=./dumpfile.raw count=400
It works but the file is not complete

Code:
dd if=/dev/fmem of=./dumpfile.raw bs=1MB count=2000

dd if=/dev/fmem of=./dumpfile.raw count=500
Error: Segmentation fault

The version of fmem is 1.5

On top of that, if I download version 1.6 and run 'make', it gives me compilation errors :(

Any clue?

Thanks in advance!
 

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