module: Wait for RCU synchronizing before releasing a module
Wait for RCU synchronizing on failure path of module loading before releasing struct module, because the memory of mod->list can still be accessed by list walkers (e.g. kallsyms). Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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