Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

in_node_exporter_metrics: fix size of core_throttles_set #9476

Open
wants to merge 1 commit into
base: master
Choose a base branch
from

Conversation

faran1512
Copy link

@faran1512 faran1512 commented Oct 9, 2024

…nux.c

The issue is in ne_cpu_linux.c
In core_throttles_set[n][m], n has size 32 only.
On my PC, I have 44 cores and physical_package_id can have max value of 88.

On line 140 we see:
if (core_throttles_set[physical_package_id][core_id] != 0)

This accesses array at index 88, that has size of only 32.
This causes a segmentation fault.
Because we access data from invalid address outside the range of buffer.

Fix: The size is changed to 256 to accomodate high core count.

Signed-off-by: Faran Abdullah [email protected]


Enter [N/A] in the box, if an item is not applicable to your change.

Testing
Before we can approve your change; please submit the following in a comment:

  • [N/A] Example configuration file for the change
  • [N/A] Debug log output from testing the change
  • [N/A] Attached Valgrind output that shows no leaks or memory corruption was found

If this is a change to packaging of containers or native binaries then please confirm it works for all targets.

  • [N/A] Run local packaging test showing all targets (including any new ones) build.
  • [N/A] Set ok-package-test label to test for all targets (requires maintainer to do).

Documentation

  • [N/A] Documentation required for this feature

Backporting

  • [N/A] Backport to latest stable release.

Fluent Bit is licensed under Apache 2.0, by submitting this pull request I understand that this code will be released under the terms of that license.

…nux.c

In core_throttles_set[n][m], n has size 32 only.
On my PC, I have 44 cores and physical_package_id can have max value of 88. 

On  line 140 we see:
 if (core_throttles_set[physical_package_id][core_id] != 0)

This causes a segmentation fault as we access data from invalid address outside the range of buffer. 

The size is changed to 256 to accomodate high core count. 

Signed-off-by: Faran Abdullah [email protected]

Signed-off-by: Faran Abdullah <[email protected]>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Projects
None yet
Development

Successfully merging this pull request may close these issues.

1 participant