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processes exits at the same time. The linux_emuldata structure is freed but p->p_emuldata is left as a dangling pointer to the just freed memory. The check for W_EXIT in the loop scanning the child processes isn't safe since the state of the child process can change right afterwards. Lock the process and check the W_EXIT before delivering signal. Submitted by: tegge Reviewed by: davidxu MFC after: 1 week |
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