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bugfix #144: Do not free kstack when the main thread exits

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Yifan Wu 2024-03-03 22:09:17 +08:00
parent 03c4188c08
commit aaab6d3dd6
1 changed files with 7 additions and 0 deletions
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7
os/src/task/mod.rs
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@ -127,6 +127,13 @@ pub fn exit_current_and_run_next(exit_code: i32) {
process_inner.memory_set.recycle_data_pages(); process_inner.memory_set.recycle_data_pages();
// drop file descriptors // drop file descriptors
process_inner.fd_table.clear(); process_inner.fd_table.clear();
// Remove all tasks except for the main thread itself.
// This is because we are still using the kstack under the TCB
// of the main thread. This TCB, including its kstack, will be
// deallocated when the process is reaped via waitpid.
while process_inner.tasks.len() > 1 {
process_inner.tasks.pop();
}
} }
drop(process); drop(process);
// we do not have to save task context // we do not have to save task context