| commit | 8d6ca194ee77c3e084afe24a5f566fa1cbd6b89c | [log] [tgz] |
|---|---|---|
| author | Josh Gao <jmgao@google.com> | Thu Jul 14 13:57:42 2016 -0700 |
| committer | Josh Gao <jmgao@google.com> | Thu Jul 14 16:19:49 2016 -0700 |
| tree | 319a7d7b4b119273772269515819ec638bf007b5 | |
| parent | 008efb756fea8a9e66a1825b546e9dc392c72bec [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: I93f6423e6de38e2bc6c75d8d33052da4cd2daa8a