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When a crashing process is in a different PID namespace than the handler, the crasher doesn't have a way of knowing its own thread ID in the handler's namespace and the kernel lacks mechanisms to perform this translation before Linux 4.1 (where the information is present in /proc/<pid>/status:NSPid). This patch gives the handler a way of identifying the requesting thread by sending a stack address along with the crash dump request, which the handler can search for in each of the process' threads. This information is useful both for attaching exception information to the right thread and to allow the handler to send signals to the correct thread when using a shared socket connection. Bug: crashpad:284, crashpad:286 Change-Id: I4fa366c8fb17f932b056265cf71a4af160ba342f Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/1558828 Commit-Queue: Joshua Peraza <jperaza@chromium.org> Reviewed-by: Mark Mentovai <mark@chromium.org>
Crashpad
Crashpad is a crash-reporting system.
Documentation
- Project status
- Developing Crashpad: instructions for getting the source code, building, testing, and contributing to the project.
- Crashpad interface documentation
- Crashpad tool man pages
- Crashpad overview design
Source Code
Crashpad’s source code is hosted in a Git repository at https://chromium.googlesource.com/crashpad/crashpad.
Other Links
- Bugs can be reported at the Crashpad issue tracker.
- The Crashpad bots perform automated builds and tests.
- crashpad-dev is the Crashpad developers’ mailing list.