[CRIU] Migration ...

[Cyrill Gorcunov]

On Tue, Jan 27, 2015 at 02:03:17PM +0300, Cyrill Gorcunov wrote:
> > [878588.364797] test2[28350]: segfault at 3431474570 ip
> > 0000003431474570 sp 00007fffbf522cc8 error 14
> > 
> > Further evidence of the segmentation violation suffered by the
> > reinstated process. I have attached the checkpoint directory
> > (compressed) ...
> 
> Thanks. I'll ping you once I find any clue.

OK, from the images you've sent me

[878588.364797] test2[28350]: segfault at 3431474570 ip 0000003431474570 sp 00007fffbf522cc8 error 14

in mm image we've

{
        start: 0x00003431400000
        end: 0x0000343158a000
        pgoff: 0000000000000000
        shmid: 0x00000000000004
        prot: 0x5
        flags: 0x2
        status: 0x41
        fd: 0xffffffffffffffff
        fdflags: 0
}


which in turn points to

id: 0x4 flags: 0 pos: 0000000000000000 fown: { uid: 0 euid: 0 signum: 0 pid_type: 0 pid: 0 }  name: "/lib64/libc-2.12.so" size: 0x000000001d6668 

so it looks like something is failing inside libc library upon restore, neeed to take
a look into libc source code (if only I'm not missing something obvious).

	Cyrill