Changes in V2->V3: V2: https://lore.kernel.org/all/20230917000045.56377-1-puranjay12@xxxxxxxxx/ - Use unwinder from stacktrace.c rather than open coding the unwind logic. - Fix a bug in the prologue related to BPF_FP (Xu Kuohai) Changes in V1->V2: V1: https://lore.kernel.org/all/20230912233942.6734-1-puranjay12@xxxxxxxxx/ - Remove exceptions from DENYLIST.aarch64 as they are supported now. The base support for exceptions was merged with [1] and it was enabled for x86-64. This patch set enables the support on ARM64, all sefltests are passing: # ./test_progs -a exceptions #74/1 exceptions/exception_throw_always_1:OK #74/2 exceptions/exception_throw_always_2:OK #74/3 exceptions/exception_throw_unwind_1:OK #74/4 exceptions/exception_throw_unwind_2:OK #74/5 exceptions/exception_throw_default:OK #74/6 exceptions/exception_throw_default_value:OK #74/7 exceptions/exception_tail_call:OK #74/8 exceptions/exception_ext:OK #74/9 exceptions/exception_ext_mod_cb_runtime:OK #74/10 exceptions/exception_throw_subprog:OK #74/11 exceptions/exception_assert_nz_gfunc:OK #74/12 exceptions/exception_assert_zero_gfunc:OK #74/13 exceptions/exception_assert_neg_gfunc:OK #74/14 exceptions/exception_assert_pos_gfunc:OK #74/15 exceptions/exception_assert_negeq_gfunc:OK #74/16 exceptions/exception_assert_poseq_gfunc:OK #74/17 exceptions/exception_assert_nz_gfunc_with:OK #74/18 exceptions/exception_assert_zero_gfunc_with:OK #74/19 exceptions/exception_assert_neg_gfunc_with:OK #74/20 exceptions/exception_assert_pos_gfunc_with:OK #74/21 exceptions/exception_assert_negeq_gfunc_with:OK #74/22 exceptions/exception_assert_poseq_gfunc_with:OK #74/23 exceptions/exception_bad_assert_nz_gfunc:OK #74/24 exceptions/exception_bad_assert_zero_gfunc:OK #74/25 exceptions/exception_bad_assert_neg_gfunc:OK #74/26 exceptions/exception_bad_assert_pos_gfunc:OK #74/27 exceptions/exception_bad_assert_negeq_gfunc:OK #74/28 exceptions/exception_bad_assert_poseq_gfunc:OK #74/29 exceptions/exception_bad_assert_nz_gfunc_with:OK #74/30 exceptions/exception_bad_assert_zero_gfunc_with:OK #74/31 exceptions/exception_bad_assert_neg_gfunc_with:OK #74/32 exceptions/exception_bad_assert_pos_gfunc_with:OK #74/33 exceptions/exception_bad_assert_negeq_gfunc_with:OK #74/34 exceptions/exception_bad_assert_poseq_gfunc_with:OK #74/35 exceptions/exception_assert_range:OK #74/36 exceptions/exception_assert_range_with:OK #74/37 exceptions/exception_bad_assert_range:OK #74/38 exceptions/exception_bad_assert_range_with:OK #74/39 exceptions/non-throwing fentry -> exception_cb:OK #74/40 exceptions/throwing fentry -> exception_cb:OK #74/41 exceptions/non-throwing fexit -> exception_cb:OK #74/42 exceptions/throwing fexit -> exception_cb:OK #74/43 exceptions/throwing extension (with custom cb) -> exception_cb:OK #74/44 exceptions/throwing extension -> global func in exception_cb:OK #74/45 exceptions/exception_ext_mod_cb_runtime:OK #74/46 exceptions/throwing extension (with custom cb) -> global func in exception_cb:OK #74/47 exceptions/exception_ext:OK #74/48 exceptions/non-throwing fentry -> non-throwing subprog:OK #74/49 exceptions/throwing fentry -> non-throwing subprog:OK #74/50 exceptions/non-throwing fentry -> throwing subprog:OK #74/51 exceptions/throwing fentry -> throwing subprog:OK #74/52 exceptions/non-throwing fexit -> non-throwing subprog:OK #74/53 exceptions/throwing fexit -> non-throwing subprog:OK #74/54 exceptions/non-throwing fexit -> throwing subprog:OK #74/55 exceptions/throwing fexit -> throwing subprog:OK #74/56 exceptions/non-throwing fmod_ret -> non-throwing subprog:OK #74/57 exceptions/non-throwing fmod_ret -> non-throwing global subprog:OK #74/58 exceptions/non-throwing extension -> non-throwing subprog:OK #74/59 exceptions/non-throwing extension -> throwing subprog:OK #74/60 exceptions/non-throwing extension -> non-throwing subprog:OK #74/61 exceptions/non-throwing extension -> throwing global subprog:OK #74/62 exceptions/throwing extension -> throwing global subprog:OK #74/63 exceptions/throwing extension -> non-throwing global subprog:OK #74/64 exceptions/non-throwing extension -> main subprog:OK #74/65 exceptions/throwing extension -> main subprog:OK #74/66 exceptions/reject_exception_cb_type_1:OK #74/67 exceptions/reject_exception_cb_type_2:OK #74/68 exceptions/reject_exception_cb_type_3:OK #74/69 exceptions/reject_exception_cb_type_4:OK #74/70 exceptions/reject_async_callback_throw:OK #74/71 exceptions/reject_with_lock:OK #74/72 exceptions/reject_subprog_with_lock:OK #74/73 exceptions/reject_with_rcu_read_lock:OK #74/74 exceptions/reject_subprog_with_rcu_read_lock:OK #74/75 exceptions/reject_with_rbtree_add_throw:OK #74/76 exceptions/reject_with_reference:OK #74/77 exceptions/reject_with_cb_reference:OK #74/78 exceptions/reject_with_cb:OK #74/79 exceptions/reject_with_subprog_reference:OK #74/80 exceptions/reject_throwing_exception_cb:OK #74/81 exceptions/reject_exception_cb_call_global_func:OK #74/82 exceptions/reject_exception_cb_call_static_func:OK #74/83 exceptions/reject_multiple_exception_cb:OK #74/84 exceptions/reject_exception_throw_cb:OK #74/85 exceptions/reject_exception_throw_cb_diff:OK #74/86 exceptions/reject_set_exception_cb_bad_ret1:OK #74/87 exceptions/reject_set_exception_cb_bad_ret2:OK #74/88 exceptions/check_assert_eq_int_min:OK #74/89 exceptions/check_assert_eq_int_max:OK #74/90 exceptions/check_assert_eq_zero:OK #74/91 exceptions/check_assert_eq_llong_min:OK #74/92 exceptions/check_assert_eq_llong_max:OK #74/93 exceptions/check_assert_lt_pos:OK #74/94 exceptions/check_assert_lt_zero:OK #74/95 exceptions/check_assert_lt_neg:OK #74/96 exceptions/check_assert_le_pos:OK #74/97 exceptions/check_assert_le_zero:OK #74/98 exceptions/check_assert_le_neg:OK #74/99 exceptions/check_assert_gt_pos:OK #74/100 exceptions/check_assert_gt_zero:OK #74/101 exceptions/check_assert_gt_neg:OK #74/102 exceptions/check_assert_ge_pos:OK #74/103 exceptions/check_assert_ge_zero:OK #74/104 exceptions/check_assert_ge_neg:OK #74/105 exceptions/check_assert_range_s64:OK #74/106 exceptions/check_assert_range_u64:OK #74/107 exceptions/check_assert_single_range_s64:OK #74/108 exceptions/check_assert_single_range_u64:OK #74/109 exceptions/check_assert_generic:OK #74/110 exceptions/check_assert_with_return:OK #74 exceptions:OK Summary: 1/110 PASSED, 0 SKIPPED, 0 FAILED [1] https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/commit/?h=for-next&id=ec6f1b4db95b7eedb3fe85f4f14e08fa0e9281c3 Puranjay Mohan (2): arm64: stacktrace: Implement arch_bpf_stack_walk() for the BPF JIT bpf, arm64: support exceptions arch/arm64/kernel/stacktrace.c | 26 ++++++ arch/arm64/net/bpf_jit_comp.c | 87 +++++++++++++++----- tools/testing/selftests/bpf/DENYLIST.aarch64 | 1 - 3 files changed, 94 insertions(+), 20 deletions(-) -- 2.40.1
