Gilles Chanteperdrix wrote: > Jan Kiszka wrote: >> Hi Gilles, >> >> trying to understand the cb_read/write lock usage, some question came up >> here: What prevents that the mutexq iteration in pse51_mutex_check_init >> races against pse51_mutex_destroy_internal? >> >> If nothing, then I wonder if we actually have to iterate over the whole >> queue to find out whether a given object has been initialized and >> registered already or not. Can't this be encoded differently? > > We actually iterate over the queue only if the magic happens to be > correct, which is not the common case.
However, there remains a race window with other threads removing other mutex objects in parallel, changing the queue - risking a kernel oops. And that is what worries me. It's unlikely. but possible. It's unclean. Jan
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