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1700147697
Add __force annotations to casts that convert between __user and kernel address spaces. These casts are intentional: - In bpf_send_signal_common(), the value is stored in si_value.sival_ptr which is typed as void __user *, but the value comes from a BPF program parameter. - In the bpf_*_dynptr() kfuncs, user pointers are cast to const void * before being passed to copy helper functions that correctly handle the user address space through copy_from_user variants. Without __force, sparse reports: warning: cast removes address space '__user' of expression Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20260115184509.3585759-1-mykyta.yatsenko5@gmail.com Closes: https://lore.kernel.org/oe-kbuild-all/202601131740.6C3BdBaB-lkp@intel.com/