From 4e0b1b0731bd355a4dee279a270bdd5b29e68b85 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Tue, 6 Dec 2022 15:59:34 +0100 Subject: [PATCH] HID: bpf: enforce HID_BPF dependencies As mentioned in the link below, having JIT and BPF is not enough to have fentry/fexit/fmod_ret APIs. This resolves the error that happens on a system without tracing enabled when hid-bpf tries to load itself. Link: https://lore.kernel.org/r/CABRcYmKyRchQhabi1Vd9RcMQFCcb=EtWyEbFDFRTc-L-U8WhgA@mail.gmail.com Fixes: f5c27da4e3c8 ("HID: initial BPF implementation") Signed-off-by: Benjamin Tissoires Reviewed-by: Florent Revest Reviewed-by: Jiri Kosina Link: https://lore.kernel.org/r/20221206145936.922196-4-benjamin.tissoires@redhat.com --- drivers/hid/bpf/Kconfig | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/hid/bpf/Kconfig b/drivers/hid/bpf/Kconfig index 298634fc33351..03f52145b83b6 100644 --- a/drivers/hid/bpf/Kconfig +++ b/drivers/hid/bpf/Kconfig @@ -4,7 +4,8 @@ menu "HID-BPF support" config HID_BPF bool "HID-BPF support" default HID_SUPPORT - depends on BPF && BPF_SYSCALL + depends on BPF && BPF_SYSCALL && \ + DYNAMIC_FTRACE_WITH_DIRECT_CALLS help This option allows to support eBPF programs on the HID subsystem. eBPF programs can fix HID devices in a lighter way than a full -- 2.30.2