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Fix process channel cleanup after exit - #298
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pauljccode wants to merge 1 commit into
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pauljccode wants to merge 1 commit into
pauljccode wants to merge 1 commit into
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Detach exited processes before freeing them so delayed channel cleanup cannot signal a newer process through reused heap storage. Let the existing EOF exchange close drained channels, make cleanup after normal exit safe, and release the callback context on every exit path.
This was referenced Oct 3, 2026
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An exited process can leave a dangling pointer in its channel. If the allocator reuses that address, closing the old channel can send
SIGINTto a newer child. The failing log shows a new child receivingSIGINTimmediately after delayed channel-close requests, consistent with this defect; allocator reuse was not captured.Detach the process in the exit callback, allow cleanup after normal exit, and free the callback context on every exit path. Remove the read-time shutdown to avoid freeing the detached channel while
channel_readstill uses it. Non-interactive channels retain read-response-before-close ordering.Related to #64 and #65, which addressed callbacks retaining a freed channel; this fixes a channel retaining a freed process.
Verification:
post/test/cmd_execrepetitions per platform.