tree c528d1d67fca3180ad19b488db0e0165771322b9
parent 08ccc735a386bdfb410538c714ec7871fda21537
author Josh Gao <jmgao@google.com> 1555445828 -0700
committer Josh Gao <jmgao@google.com> 1555548823 -0700

debuggerd: call setsid in our children.

There appears to be a kernel bug that causes SIGHUP and SIGCONT to be
sent to the parent process group we spawn from if the process group
contains stopped jobs (e.g. the parent itself, because of wait_for_gdb).

Call setsid in all of our children to prevent this from happening.

Bug: http://b/31124563
Test: adb shell 'setprop debug.debuggerd.wait_for_gdb 1; killall -ABRT surfaceflinger'
Change-Id: I1a48d70886880a5bfbe2deb80d48deece55faf09
(cherry picked from commit 18cb6812474e00050efab19e242c8a04ed470bec)