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Opened on 05/20/05 at 11:25:37
Closed on 04/03/14 at 08:23:56
#788 closed defect (fixed)
Priority inheritance mechanism may activate a deleted task
| Reported by: | jacques.seronie-vivien | Owned by: | Joel Sherrill |
|---|---|---|---|
| Priority: | normal | Milestone: | 4.11 |
| Component: | score | Version: | 4.6 |
| Severity: | major | Keywords: | |
| Cc: | bugs@…, chrisj@…, sebastian.huber@… | Blocked By: | |
| Blocking: |
Description
When a task T owning a semaphore is deleted, the semaphore still exists. If another task with higher priority than T tries to take the semaphore, the task T inherits its priority, and is activated (by the priority inheritance mechanism). As task T is deleted, its activation leads to a crash.
This corresponds to a wrong usage of the OS resources (deletion of a task still owning a semaphore) but it would be nice to improve OS robustness.
Release:
4.6.1
Environment:
build with solaris tools, sparc-rtems target, erc32 bsp
Attachments (2)
Change History (5)
comment:1 Changed on 05/20/05 at 18:40:15 by Joel Sherrill
| Status: | assigned → waiting |
|---|
Changed on 12/18/13 at 13:27:15 by Daniel Ramirez
| Attachment: | psx17-bug-proof.patch added |
|---|
comment:2 Changed on 01/13/14 at 14:35:29 by Sebastian Huber
| Cc: | Sebastian Huber added |
|---|---|
| Milestone: | 2 → Not Assigned |
| rep_platform: | → All |
Changed on 03/28/14 at 12:25:45 by Sebastian Huber
| Attachment: | 0001-score-PR788-Add-INTERNAL_ERROR_RESOURCE_IN_USE.patch added |
|---|
Detect resource in use and issue a fatal error.
comment:3 Changed on 04/03/14 at 08:23:56 by Sebastian Huber
| Milestone: | Not Assigned → 4.11 |
|---|---|
| Resolution: | → fixed |
| Status: | assigned → closed |
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