From 5b7cdc24632566a514dc0a6255269f653de84d1b Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Fri, 15 Dec 2023 10:18:26 +0100 Subject: [PATCH] bpf: Add missing BPF_LINK_TYPE invocations Pengfei Xu reported [1] Syzkaller/KASAN issue found in bpf_link_show_fdinfo. The reason is missing BPF_LINK_TYPE invocation for uprobe multi link and for several other links, adding that. [1] https://lore.kernel.org/bpf/ZXptoKRSLspnk2ie@xpf.sh.intel.com/ Fixes: 89ae89f53d20 ("bpf: Add multi uprobe link") Fixes: e420bed02507 ("bpf: Add fd-based tcx multi-prog infra with link support") Fixes: 84601d6ee68a ("bpf: add bpf_link support for BPF_NETFILTER programs") Fixes: 35dfaad7188c ("netkit, bpf: Add bpf programmable net device") Reported-by: Pengfei Xu Signed-off-by: Jiri Olsa --- include/linux/bpf_types.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/linux/bpf_types.h b/include/linux/bpf_types.h index fc0d6f32c6876..38cbdaec6bdfc 100644 --- a/include/linux/bpf_types.h +++ b/include/linux/bpf_types.h @@ -148,3 +148,7 @@ BPF_LINK_TYPE(BPF_LINK_TYPE_PERF_EVENT, perf) #endif BPF_LINK_TYPE(BPF_LINK_TYPE_KPROBE_MULTI, kprobe_multi) BPF_LINK_TYPE(BPF_LINK_TYPE_STRUCT_OPS, struct_ops) +BPF_LINK_TYPE(BPF_LINK_TYPE_NETFILTER, netfilter) +BPF_LINK_TYPE(BPF_LINK_TYPE_TCX, tcx) +BPF_LINK_TYPE(BPF_LINK_TYPE_UPROBE_MULTI, uprobe_multi) +BPF_LINK_TYPE(BPF_LINK_TYPE_NETKIT, netkit)