windbg中bp和bu的用法有什么不同的
个人使用习惯，驱动还没被加载的情况下设置断点用bu，这样，驱动一旦被加载，断点就生效了。一般情况下，用bp去设置断点。
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Unresolved Breakpoints (bu Breakpoints)
There are three primary differences between bp breakpoints and bu breakpoints:
A bp breakpoint location is always converted to an address. If a module change moves the code at which a bp breakpoint was set, the breakpoint remains at the same address. On the other hand, a bu breakpoint remains associated with the symbolic value (typically a symbol plus an offset) that was used, and it tracks this symbolic location even if its address changes.
If a bp breakpoint address is found in a loaded module, and if that module is later unloaded, the breakpoint is removed from the breakpoint list. On the other hand, bu breakpoints persist after repeated unloads and loads.
Breakpoints that you set with bp are not saved in WinDbg workspaces. Breakpoints that are set with bu are saved in workspaces.