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fix: bug for ptrace_attach self pid

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Ken Sato
2018-03-01 09:37:12 +09:00
parent 1796c20b88
commit 7ad6f9595c
1 changed files with 7 additions and 0 deletions
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7
kernel/syscall.c
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@@ -6088,6 +6088,13 @@ static int ptrace_attach(int pid)
error = -ESRCH; error = -ESRCH;
goto out; goto out;
} }
if (proc->pid == pid) {
thread_unlock(thread, &lock);
error = -EPERM;
goto out;
}
child = thread->proc; child = thread->proc;
dkprintf("ptrace_attach(): pid requested:%d, thread->tid:%d, thread->proc->pid=%d, thread->proc->parent=%p\n", pid, thread->tid, thread->proc->pid, thread->proc->parent); dkprintf("ptrace_attach(): pid requested:%d, thread->tid:%d, thread->proc->pid=%d, thread->proc->parent=%p\n", pid, thread->tid, thread->proc->pid, thread->proc->parent);