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sem: fix NULL pointer when open CONFIG_PRIORITY_INHERITANCE
set CONFIG_PRIORITY_INHERITANCE=y set CONFIG_SEM_PREALLOCHOLDERS=0 semaphore/sem_holder.c:320:34: runtime error: member access within null pointer of type 'struct tcb_s' #0 0xd8b540 in nxsem_boostholderprio semaphore/sem_holder.c:320 #1 0xd8c1cf in nxsem_boost_priority semaphore/sem_holder.c:703 #2 0xda5dfa in nxsem_wait semaphore/sem_wait.c:145 #3 0xda61d9 in nxsem_wait_uninterruptible semaphore/sem_wait.c:248 #4 0x12f2477 in media_service_thread0 /home/ligd/platform/dev/apps/examples/hello/hello_main.c:44 #5 0x1204154 in pthread_startup pthread/pthread_create.c:59 #6 0x1cd906f in pthread_start pthread/pthread_create.c:139 #7 0xe72fcb in pre_start sim/sim_initialstate.c:52 Signed-off-by: ligd <liguiding1@xiaomi.com>
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