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  • Josh Gao's avatar
    DO NOT MERGE: debuggerd: verify that traced threads belong to the right process. · 8d6ca194
    Josh Gao authored 
    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
    8d6ca194
backtrace.c 4.62 KB