trace: skip NULL address in add_print_address#2
Open
JqqJiaziLi wants to merge 1 commit intofujitsu:masterfrom
Open
trace: skip NULL address in add_print_address#2JqqJiaziLi wants to merge 1 commit intofujitsu:masterfrom
JqqJiaziLi wants to merge 1 commit intofujitsu:masterfrom
Conversation
If trace_printk() uses a format that is not constant, corresponding entry in __trace_printk_fmt section will set to NULL. This NULL address cause add_print_address return -1, finally, trace cmd cannot work. Just skip NULL address. Related kernel commit: 3debb0a9ddb1 (tracing: Fix trace_printk() to print when not using bprintk())
This file contains hidden or 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
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
If trace_printk() uses a format that is not constant, corresponding entry in __trace_printk_fmt section will set to NULL.
This NULL address cause add_print_address return -1, finally, trace cmd cannot work.
Just skip NULL address.
Related kernel commit:
3debb0a9ddb1 (tracing: Fix trace_printk() to print when not using bprintk())