tree df1f9c23f7425a836ab8095859e89638d6be2321
parent 325eeebc47d9f8ac07c5e390f46c8f58a1621180
author Josh Gao <jmgao@google.com> 1487301448 -0800
committer Josh Gao <jmgao@google.com> 1487301969 -0800

crash_dump: remove unneeded/faulty checks.

We already check our /proc/`getppid()` fd every time we attach a thread, so
these were unneeded at best. The one that happened after dropping
capabilities was actively wrong, though, because /proc/pid access
checks happen on every operation. (only on some kernels?)

Also, add a check that getppid() doesn't change after opening
/proc/getppid().

Bug: http://b/35241370
Test: debuggerd -b `pidof com.android.bluetooth`
Change-Id: I807439d8c2afd027f3c382face50167a8a7946c4