| commit | 4a875ce6ff678d01648e89f1186debd5a1db6377 | [log] [tgz] |
|---|---|---|
| author | Josh Gao <jmgao@google.com> | Thu Jun 30 14:20:18 2016 -0700 |
| committer | Josh Gao <jmgao@google.com> | Wed Jul 13 16:49:02 2016 -0700 |
| tree | bfca8adb748c7396243bc1914c06758d23082c5f | |
| parent | 34ae543dc3b9c577c39eb9d7063e2f72747f5d26 [diff] |
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.
Bug: http://b/29555636
Change-Id: I4dfe1ea30e2c211d2389321bd66e3684dd757591