Files
threadx/utility
Frédéric Desbiens 5481fc75a0 Fixed the resource leaks on the xQueueCreate error paths (#582)
xQueueCreate() allocated the queue descriptor and its backing memory, then
created two ThreadX semaphores, and returned NULL on either semaphore failure
without releasing anything. Since no handle reached the caller, vQueueDelete()
could not be used to recover, so both allocations were lost. A failure on the
second semaphore additionally abandoned the read semaphore it had already
created, leaving a live ThreadX control block inside freed memory.

Release the backing memory and the descriptor on both paths, and delete the
read semaphore before returning when the write semaphore cannot be created.
This is the teardown order vQueueDelete() already uses, and it matches the
cleanup xTaskCreate() performs on its own error paths.

Verified with a fault injection harness that intercepts the ThreadX byte pool
and semaphore entry points to force tx_semaphore_create() to fail on a chosen
call. On a read semaphore failure the layer previously performed 2 allocations
and 0 releases, and on a write semaphore failure 2 allocations, 0 releases and
0 semaphore deletions. It now performs 2 releases in both cases and deletes
the read semaphore in the second, with the byte pool restored to its prior
state.

Fixes https://github.com/eclipse-threadx/threadx/issues/570

Assisted-by: Claude Code (Opus 5) <noreply@anthropic.com>
2026-08-09 07:28:19 -04:00
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