| commit | 36dd1443670c571fa9f4a8904479c6bd8e8444c6 | [log] [tgz] |
|---|---|---|
| author | Josh Gao <jmgao@google.com> | Thu Jul 14 16:05:10 2016 -0700 |
| committer | Josh Gao <jmgao@google.com> | Mon Jul 18 19:35:45 2016 +0000 |
| tree | 6ef64d1329523a31da0e478043a92bd26ef83947 | |
| parent | 71da8e7537b05f7e5b107e3f9f6476c2493f0cbc [diff] |
DO NOT MERGE: debuggerd: verify that traced threads belong to the right process.
Fix two races in debuggerd's PTRACE_ATTACH logic:
1. The target thread in a crash dump request could exit between the
/proc/<pid>/task/<tid> check and the PTRACE_ATTACH.
2. Sibling threads could exit between listing /proc/<pid>/task and the
PTRACE_ATTACH.
Backport of NYC change I4dfe1ea30e2c211d2389321bd66e3684dd757591
Bug: http://b/29555636
Change-Id: I320f47216b21018d3f613cfbbaaff40b3548ef36