From 506ada89629ec7059b96ecfb0dc7d33ece0103ca Mon Sep 17 00:00:00 2001 From: Eduard Zingerman Date: Fri, 4 Sep 2026 17:05:56 -0700 Subject: bpf: mark a NULL kfunc argument precise check_kfunc_arg() allows bpf_register_is_null() for nullable arguments w/o marking the underlying scalar register precise. Hence a checkpoint created on such a path would prune against arbitrary scalar value. Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)") Signed-off-by: Eduard Zingerman Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com Signed-off-by: Alexei Starovoitov --- net/ipv6/exthdrs_offload.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 net/ipv6/exthdrs_offload.c (limited to 'net/ipv6/exthdrs_offload.c') diff --git a/net/ipv6/exthdrs_offload.c b/net/ipv6/exthdrs_offload.c new file mode 100644 index 000000000..4c00398f4 --- /dev/null +++ b/net/ipv6/exthdrs_offload.c @@ -0,0 +1,48 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * IPV6 GSO/GRO offload support + * Linux INET6 implementation + * + * IPV6 Extension Header GSO/GRO support + */ +#include +#include "ip6_offload.h" + +static const struct net_offload rthdr_offload = { + .flags = INET6_PROTO_GSO_EXTHDR, +}; + +static const struct net_offload dstopt_offload = { + .flags = INET6_PROTO_GSO_EXTHDR, +}; + +static const struct net_offload hbh_offload = { + .flags = INET6_PROTO_GSO_EXTHDR, +}; + +int __init ipv6_exthdrs_offload_init(void) +{ + int ret; + + ret = inet6_add_offload(&rthdr_offload, IPPROTO_ROUTING); + if (ret) + goto out; + + ret = inet6_add_offload(&dstopt_offload, IPPROTO_DSTOPTS); + if (ret) + goto out_rt; + + ret = inet6_add_offload(&hbh_offload, IPPROTO_HOPOPTS); + if (ret) + goto out_dstopts; + +out: + return ret; + +out_dstopts: + inet6_del_offload(&dstopt_offload, IPPROTO_DSTOPTS); + +out_rt: + inet6_del_offload(&rthdr_offload, IPPROTO_ROUTING); + goto out; +} -- cgit v1.3.1