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CPU0 CPU1
work_queue(a) work_queue(a)
-> work_cancel(a)
-> work_cancel(a)
-> enter_critical()
-> sq_addlast(a)
-> leave_critical()
-> enter_critical()
-> sq_addlast(a) // double add, wrong
-> leave_critical()
Also, this happens in mulit-threads in one CPU.
Fix:
work_cancel() should in critical section.
Signed-off-by: ligd <liguiding1@xiaomi.com>
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| .. | ||
| clock | ||
| environ | ||
| group | ||
| init | ||
| irq | ||
| module | ||
| mqueue | ||
| paging | ||
| pthread | ||
| sched | ||
| semaphore | ||
| signal | ||
| task | ||
| timer | ||
| tls | ||
| wdog | ||
| wqueue | ||
| Kconfig | ||
| Makefile | ||