Re: [PATCH v2 30/33] s390/uaccess: Add KMSAN support to put_user() and get_user()

On Tue, Nov 21, 2023 at 11:03 PM Ilya Leoshkevich wrote: > > put_user() uses inline assembly with precise constraints, so Clang is > in principle capable of instrumenting it automatically. Unfortunately, > one of the constraints contains a dereferenced user pointer, and Clang > does not currently

[PATCH v2 30/33] s390/uaccess: Add KMSAN support to put_user() and get_user()

put_user() uses inline assembly with precise constraints, so Clang is in principle capable of instrumenting it automatically. Unfortunately, one of the constraints contains a dereferenced user pointer, and Clang does not currently distinguish user and kernel pointers. Therefore KMSAN attempts to ac