CVS commit: src/sys/kern

["Kamil Rytarowski" <kamil%netbsd.org@localhost>]

Module Name:    src
Committed By:   kamil
Date:           Wed May  1 17:02:40 UTC 2019

Modified Files:
        src/sys/kern: sys_ptrace_common.c

Log Message:
Disallow resuming program with PC=0x0 in ptrace(2)

If the address parameter is 0, report error.
It's a popular mistake to set Program Counter to 0x0.
In certain kernels this is allowable parameter and causes
portability issue.

Disallow explicitly zeroed PC, instead of triggering
a harder to debug crash later.


To generate a diff of this commit:
cvs rdiff -u -r1.50 -r1.51 src/sys/kern/sys_ptrace_common.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.