strace-4.10 cannot decode string

Tue Mar 31 00:00:21 UTC 2015

Hi,

On Thu, Mar 12, 2015 at 02:00:05PM +0000, Justin Huang wrote:
> Hi strace-developers,
> 
> I ran the sample hello.c code on strace 4.5.8 and 4.10.  Version 4.5.8 can show the text print "hello world" with write() in log while 4.10 only show some number which may be the address.

Looks like a hardened kernel where process_vm_readv fails with EPERM.
To confirm this hypothesis, try the patch from
http://sourceforge.net/p/strace/mailman/message/33674829/

-- 
ldv
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