jerpelea opened a new pull request, #21291:
URL: https://github.com/apache/nuttx/pull/21291
## Summary
Fix two related consistency issues in task_reparent().
Reject task_reparent(0, child) when the current parent does not have a
valid parent process.
A parent PID of zero previously resolved to the idle task's
g_kthread_group.
This could incorrectly move the child into the kernel-thread group
and discard its retained child status.
The invalid grandparent case now returns -ESRCH.
Update the child's tg_ppid only after child-status accounting has been
migrated successfully.
The previous implementation changed tg_ppid before removing the
child record from the old parent.
If the expected child-status entry was missing, the function
returned -ENOENT after partially changing the relationship.
The new implementation leaves the original parent relationship
unchanged when child-status migration fails.
Apply both fixes to configurations with and without HAVE_GROUP_MEMBERS.
## Impact
RELEASE
## Testing
CI
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