f5a7e1a108
Fixes races where threads on another CPU are joining the exiting thread, since it could still be running when the joiners wake up on a different CPU. Fixes problems where the thread object is still being used by the kernel when the fn_abort() function is called, preventing the thread object from being recycled or freed back to a slab pool. Fixes a race where a thread is aborted from one CPU while it self-aborts on another CPU, that was currently worked around with a busy-wait. Precedent for doing this comes from FreeRTOS, which also performs final thread cleanup in the idle thread. Some logic in z_thread_single_abort() rearranged such that when we release sched_spinlock, the thread object pointer is never dereferenced by the kernel again; join waiters or fn_abort() logic may free it immediately. An assertion added to z_thread_single_abort() to ensure it never gets called with thread == _current outside of an ISR. Some logic has been added to ensure z_thread_single_abort() tasks don't run more than once. Fixes: #26486 Related to: #23063 #23062 Signed-off-by: Andrew Boie <andrew.p.boie@intel.com> |
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| .. | ||
| core | ||
| include | ||
| CMakeLists.txt | ||
| Kconfig | ||
| Linux.aarch64.cmake | ||