Messages in this thread | | | Date | Tue, 4 Sep 2007 18:39:33 +0200 | From | "anon... anon.al" <> | Subject | Race condition: calling remove_proc_entry in cleanup_module (module_exit) while someone's using procfile |
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Hi!
There is a race condition if an instance is executing "__exit device_exit" and calls remove_proc_entry, while someone is still using the procfile, right?.
static void __exit device_exit(void) { // what if the procfile is still in use? remove_proc_entry(PROC_FILE_NAME, &proc_root); }
To remove this race condition, the code in "__exit device_exit" must a) be sure that no other instance is in procfile functions b) call remove_proc_entry before any other instance accesses the procfile
*** Is this at all possible if a race-condition is to be avoided? If yes: which mechanism can be used?
Thanks -Albert - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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