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All pointer offsets are now represented solely using `reg->var_off` and min/max fields, simplifying pointer tracking code and making it easier to widen pointer registers for loop convergence checks. Patch 1 is a preparatory refactoring of check_reg_sane_offset(). Patch 2 is the main change, moving pointer offsets from `reg->off` to `reg->var_off`. Patch 3 renames the now-repurposed `reg->off` field to `reg->delta`, reflecting its remaining role as a constant delta between linked scalar registers. --- Eduard Zingerman (3): bpf: split check_reg_sane_offset() in two parts bpf: use reg->var_off instead of reg->off for pointers bpf: rename bpf_reg_state->off to bpf_reg_state->delta include/linux/bpf_verifier.h | 5 +- kernel/bpf/log.c | 10 +- kernel/bpf/verifier.c | 363 +++++++++------------ .../testing/selftests/bpf/prog_tests/linked_list.c | 4 +- .../selftests/bpf/progs/exceptions_assert.c | 2 +- tools/testing/selftests/bpf/progs/iters.c | 6 +- .../selftests/bpf/progs/mem_rdonly_untrusted.c | 2 +- tools/testing/selftests/bpf/progs/verifier_align.c | 40 +-- .../testing/selftests/bpf/progs/verifier_bounds.c | 2 +- .../bpf/progs/verifier_direct_packet_access.c | 4 +- tools/testing/selftests/bpf/progs/verifier_gotox.c | 4 +- .../bpf/progs/verifier_helper_packet_access.c | 2 +- .../bpf/progs/verifier_helper_value_access.c | 4 +- .../testing/selftests/bpf/progs/verifier_int_ptr.c | 2 +- .../selftests/bpf/progs/verifier_meta_access.c | 2 +- .../selftests/bpf/progs/verifier_spill_fill.c | 8 +- .../selftests/bpf/progs/verifier_stack_ptr.c | 4 +- .../selftests/bpf/progs/verifier_value_ptr_arith.c | 10 +- .../bpf/progs/verifier_xdp_direct_packet_access.c | 64 ++-- tools/testing/selftests/bpf/verifier/calls.c | 2 +- 20 files changed, 235 insertions(+), 305 deletions(-) --- base-commit: 4475cdac12c46fc26ee815de1b43cfe9f8375140 change-id: 20260211-ptrs-off-migration-9ad00d0c3f93