On 06/07/2016 09:03 PM, Kuthonuzo Luruo wrote: Next time, when/if you send patch series, send patches in one thread, i.e. patches should be replies to the cover letter. Your patches are not linked together, which makes them harder to track.
> Currently, KASAN may fail to detect concurrent deallocations of the same > object due to a race in kasan_slab_free(). This patch makes double-free > detection more reliable by serializing access to KASAN object metadata. > New functions kasan_meta_lock() and kasan_meta_unlock() are provided to > lock/unlock per-object metadata. Double-free errors are now reported via > kasan_report(). > > Per-object lock concept from suggestion/observations by Dmitry Vyukov. > So, I still don't like this, this too way hacky and complex. I have some thoughts about how to make this lockless and robust enough. I'll try to sort this out tomorrow.
