Puranjay Mohan 197d34b169 selftests/bpf: Test a multi-slot argument before a struct_ops arena argument ... The trampoline reads the __arena flag from the btf_func_model per argument but stores the ctx one register slot at a time, so the two only line up if every preceding argument occupies exactly one slot. Every arena-bearing member of bpf_testmod_ops3 takes single-slot arguments, so nothing exercises the mapping and a mis-indexed arg_flags lookup would go unnoticed on any architecture. Add test_arena_multislot(), whose first argument is a 16-byte struct passed by value. It fills ctx[0] and ctx[1], putting the arena pointer at argument index one but slot two. The callback checks both halves of the struct before dereferencing ctx[2], so a JIT that walks registers instead of arguments converts the wrong slot and fails the test. Signed-off-by: Puranjay Mohan <puranjay@kernel.org> Acked-by: Xu Kuohai <xukuohai@huawei.com> Link: https://lore.kernel.org/bpf/20260813190356.335181-8-puranjay@kernel.org Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>		2026-08-14 05:55:03 +02:00
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.gitignore
bpf_test_modorder_x.c
bpf_test_modorder_y.c
bpf_test_no_cfi.c
bpf_test_rqspinlock.c	selftests/bpf: Add success stats to rqspinlock stress test	2025-11-29 09:35:36 -08:00
bpf_testmod_kfunc.h	selftests/bpf: Test a multi-slot argument before a struct_ops arena argument	2026-08-14 05:55:03 +02:00
bpf_testmod-events.h	selftests/bpf: test bpf_get_func_arg() for tp_btf	2026-01-21 09:31:35 -08:00
bpf_testmod.c	selftests/bpf: Test a multi-slot argument before a struct_ops arena argument	2026-08-14 05:55:03 +02:00
bpf_testmod.h	selftests/bpf: Test a multi-slot argument before a struct_ops arena argument	2026-08-14 05:55:03 +02:00
Makefile	selftests/bpf: Fix test_kmods KDIR to honor O= and distro kernels	2026-06-05 14:20:57 -07:00