| commit | a50e8ffa7d56d1d6dc7d3eda7718cad6c6ac4b3d | [log] [tgz] |
|---|---|---|
| author | Josh Gao <jmgao@google.com> | Thu Jul 14 16:43:12 2016 -0700 |
| committer | Josh Gao <jmgao@google.com> | Mon Jul 18 13:23:29 2016 -0700 |
| tree | 8ef28b57582dc86881b2f5dc4255ac319d9002ce | |
| parent | 72bad95df5dc6603b0f99c4a089bc2f6684eda6d [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: I6c6efcf82a49bca140d761b2d1de04215ba4d252