[PATCH bpf-next v2 0/2] limit bpf_core_types_are_compat recursion

From: Matteo Croce
Date: Wed Feb 02 2022 - 16:13:35 EST


From: Matteo Croce <mcroce@xxxxxxxxxxxxx>

As formerly discussed on the BPF mailing list:
https://lore.kernel.org/bpf/CAADnVQJDax2j0-7uyqdqFEnpB57om_z+Cqmi1O2QyLpHqkVKwA@xxxxxxxxxxxxxx/

Matteo Croce (2):
bpf: limit bpf_core_types_are_compat() recursion
selftests/bpf: test maximum recursion depth for
bpf_core_types_are_compat()

include/linux/btf.h | 5 +
kernel/bpf/btf.c | 105 +++++++++++++++++-
.../selftests/bpf/bpf_testmod/bpf_testmod.c | 3 +
tools/testing/selftests/bpf/progs/core_kern.c | 14 +++
4 files changed, 126 insertions(+), 1 deletion(-)

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2.34.1