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AndroidSystemCore

debuggerd: verify that traced threads belong to the right process.

Josh Gao authored 8 years ago

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

d7603583

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d7603583 8 years ago

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