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[HID,for-next,v2,3/4] HID: bpf: enforce HID_BPF dependencies

Message ID 20221205164856.705656-4-benjamin.tissoires@redhat.com
State New
Headers
Series HID: bpf: remove the need for ALLOW_ERROR_INJECTION and Kconfig fixes |

Commit Message

Benjamin Tissoires Dec. 5, 2022, 4:48 p.m. UTC 
  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 <benjamin.tissoires@redhat.com>
---
 drivers/hid/bpf/Kconfig | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/hid/bpf/Kconfig b/drivers/hid/bpf/Kconfig
index 298634fc3335..03f52145b83b 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