David Vernet 67efbd57bc selftests/bpf: Add testcases for ptr_*_or_null_ in bpf_kptr_xchg ... The second argument of the bpf_kptr_xchg() helper function is ARG_PTR_TO_BTF_ID_OR_NULL. A recent patch fixed a bug whereby the verifier would fail with an internal error message if a program invoked the helper with a PTR_TO_BTF_ID | PTR_MAYBE_NULL register. This testcase adds some testcases to ensure that it fails gracefully moving forward. Before the fix, these testcases would have failed an error resembling the following: ; p = bpf_kfunc_call_test_acquire(&(unsigned long){0}); 99: (7b) *(u64 *)(r10 -16) = r7 ; frame1: ... 100: (bf) r1 = r10 ; frame1: ... 101: (07) r1 += -16 ; frame1: ... ; p = bpf_kfunc_call_test_acquire(&(unsigned long){0}); 102: (85) call bpf_kfunc_call_test_acquire#13908 ; frame1: R0_w=ptr_or_null_prog_test_ref_kfunc... ; p = bpf_kptr_xchg(&v->ref_ptr, p); 103: (bf) r1 = r6 ; frame1: ... 104: (bf) r2 = r0 ; frame1: R0_w=ptr_or_null_prog_test_ref_kfunc... 105: (85) call bpf_kptr_xchg#194 verifier internal error: invalid PTR_TO_BTF_ID register for type match Signed-off-by: David Vernet <void@manifault.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20230330145203.80506-2-void@manifault.com		2023-03-30 14:12:22 -07:00
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crypto/chacha20-s390
cxl	Merge branch 'for-6.3/cxl-rr-emu' into cxl/next	2023-02-14 16:06:10 -08:00
fault-injection
ktest	ktest: Restore stty setting at first in dodie	2023-02-20 11:52:27 -05:00
kunit	kunit: kunit.py extract handlers	2023-02-08 14:25:30 -07:00
memblock	Revert "mm: Always release pages to the buddy allocator in memblock_free_late()."	2023-02-07 13:07:37 +02:00
nvdimm
radix-tree	maple_tree: remove the parameter entry of mas_preallocate	2023-02-02 22:32:52 -08:00
scatterlist
selftests	selftests/bpf: Add testcases for ptr_*_or_null_ in bpf_kptr_xchg	2023-03-30 14:12:22 -07:00
vsock	test/vsock: vsock_perf utility	2023-01-12 12:53:54 +01:00