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Re: __{read,write}_once

On 08.11.2019 13:40, Mindaugas Rasiukevicius wrote:
>>> There is more code in the NetBSD kernel which needs fixing.  I would say
>>> pretty much all lock-free code should be audited.
>> I believe KCSAN can greatly help with that, since it automatically reports
>> concurrent accesses. Up to us then to switch to atomic, or other kinds of
>> markers like READ_ONCE.
> Is there a CSAN i.e. such sanitizer for userspace applications?

No.. there is TSan. If it would be useful to get CSan in userspace it
probably shouldn't be too difficult to write it. At least full TSan is
heavy and requires 64bit CPU.

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