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Extend the verifier_linked_scalars BPF selftest with a rX += rX test such that the div-by-zero path is rejected in the fixed case. # LDLIBS=-static PKG_CONFIG='pkg-config --static' ./vmtest.sh -- ./test_progs -t verifier_linked_scalars [...] ./test_progs -t verifier_linked_scalars #612/1 verifier_linked_scalars/scalars: find linked scalars:OK #612/2 verifier_linked_scalars/sync_linked_regs_preserves_id:OK #612/3 verifier_linked_scalars/scalars_neg:OK #612/4 verifier_linked_scalars/scalars_neg_sub:OK #612/5 verifier_linked_scalars/scalars_neg_alu32_add:OK #612/6 verifier_linked_scalars/scalars_neg_alu32_sub:OK #612/7 verifier_linked_scalars/scalars_pos:OK #612/8 verifier_linked_scalars/scalars_sub_neg_imm:OK #612/9 verifier_linked_scalars/scalars_double_add:OK #612/10 verifier_linked_scalars/scalars_sync_delta_overflow:OK #612/11 verifier_linked_scalars/scalars_sync_delta_overflow_large_range:OK #612/12 verifier_linked_scalars/scalars_alu32_big_offset:OK #612/13 verifier_linked_scalars/scalars_alu32_basic:OK #612/14 verifier_linked_scalars/scalars_alu32_wrap:OK #612/15 verifier_linked_scalars/scalars_alu32_zext_linked_reg:OK #612/16 verifier_linked_scalars/scalars_alu32_alu64_cross_type:OK #612/17 verifier_linked_scalars/scalars_alu32_alu64_regsafe_pruning:OK #612/18 verifier_linked_scalars/alu32_negative_offset:OK #612/19 verifier_linked_scalars/spurious_precision_marks:OK #612/20 verifier_linked_scalars/scalars_self_add_clears_id:OK #612/21 verifier_linked_scalars/scalars_self_add_alu32_clears_id:OK #612 verifier_linked_scalars:OK Summary: 1/21 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/r/20260407192421.508817-3-daniel@iogearbox.net Signed-off-by: Alexei Starovoitov <ast@kernel.org>