Messages in this thread | | | Date | Sun, 24 Jul 2005 09:15:26 -0400 | From | UmaMaheswari Devi <> | Subject | kernel debugging |
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I am new to kernel hacking and am facing problems in trying to peek at the runtime values of some kernel variables using gdb.
I am issuing the gdb command as follows: gdb vmlinux /proc/kcore This displays the message /proc/kcore: Operation not permitted before the (gdb) prompt is displayed. gdb then prints a value of 0 for any valid variable that is requested.
vmlinux appears to be OK, as gdb correctly identifies undefined variables. The problem seems to be with /proc/kcore. This file has a permission of 400. I am using the Red Hat distribution.
Any help is appreciated.
Thanks, Uma.
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