Re: kexec cannot find text map area if kaslr is enabled

2013-10-17 Thread Eric W. Biederman
HATAYAMA Daisuke writes: > Hello, > > I tried to use x86/kaslr branch to check if how it works with kdump > framework. As far as I can tell x86/kaslr is a pretty silly idea. There don't seem to be enough bits to make it hard to brute force, much less hard to guess. And it is a lot of pain to g

Re: kexec cannot find text map area if kaslr is enabled

2013-10-17 Thread HATAYAMA Daisuke
(2013/10/17 17:59), HATAYAMA Daisuke wrote: Hello, I tried to use x86/kaslr branch to check if how it works with kdump framework. Sorry, it's a branch of tip repository here: http://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/log/?h=x86/kaslr -- Thanks. HATAYAMA, Daisuke -- To unsubsc

kexec cannot find text map area if kaslr is enabled

2013-10-17 Thread HATAYAMA Daisuke
Hello, I tried to use x86/kaslr branch to check if how it works with kdump framework. I found kexec doesn't work. According to the message, it looks like kexec failing to find kernel text map area from kcore. $ sudo /sbin/kexec -p --command-line="ro root=UUID=cdd5e357-d223-47ee-9d6e-d1fa78b3f