Enhance core dump debugging #2827
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
I've found that when a core dump is taken by the OS without the extra settings that makes it copy shared libraries binaries into the dump, SOS doesn't work as it relies on the libcoreclr.so ELF header to be present. I have discovered a way to make lldb read that data from the image of the libcoreclr.so that it has loaded together with the dump. This change makes it possible to use SOS even for the above mentioned dump cases. In fact, it allows SOS to read any data that were mapped as read only from any shared library loaded in the process.
mikem8361
approved these changes
Jan 24, 2022
Sign up for free
to subscribe to this conversation on GitHub.
Already have an account?
Sign in.
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
I've found that when a core dump is taken by the OS without the extra
settings that makes it copy shared libraries binaries into the dump,
SOS doesn't work as it relies on the libcoreclr.so ELF header to be
present.
I have discovered a way to make lldb read that data from the image of
the libcoreclr.so that it has loaded together with the dump.
This change makes it possible to use SOS even for the above mentioned
dump cases. In fact, it allows SOS to read any data that were mapped as
read only from any shared library loaded in the process.