os/bluestore: do not segv on kraken upgrade debug print #16992
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
When loading an onode from kraken we have a compat path that calls get_ref before the SharedBlob pointer is initialized. This is fine except that if debugging is enabled the operator<< on the Blob will segv on printing *b.shared_blob (which is NULL). Fix operator<< to print something else if it is NULL. shared_blob does get set up right after the call to decode() so having it be NULL at this point is otherwise harmless. Fixes: http://tracker.ceph.com/issues/20977 Signed-off-by: Sage Weil <sage@redhat.com>
xiexingguo
approved these changes
Aug 12, 2017
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
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Outdated suggestions cannot be applied.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.
When loading an onode from kraken we have a compat path that calls
get_ref before the SharedBlob pointer is initialized. This is fine except
that if debugging is enabled the operator<< on the Blob will segv on
printing *b.shared_blob (which is NULL).
Fix operator<< to print something else if it is NULL. shared_blob does
get set up right after the call to decode() so having it be NULL at this
point is otherwise harmless.
Fixes: http://tracker.ceph.com/issues/20977
Signed-off-by: Sage Weil sage@redhat.com