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authorPaolo Abeni <pabeni@redhat.com>2021-11-30 11:08:07 +0100
committerDaniel Borkmann <daniel@iogearbox.net>2021-12-13 22:28:27 +0100
commitc8064e5b4adac5e1255cf4f3b374e75b5376e7ca (patch)
treecf13a1529985dd7b541322e17aa4260258c53116 /drivers/net/tun.c
parent2cbad989033bff0256675c38f96f5faab852af4b (diff)
bpf: Let bpf_warn_invalid_xdp_action() report more info
In non trivial scenarios, the action id alone is not sufficient to identify the program causing the warning. Before the previous patch, the generated stack-trace pointed out at least the involved device driver. Let's additionally include the program name and id, and the relevant device name. If the user needs additional infos, he can fetch them via a kernel probe, leveraging the arguments added here. Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://lore.kernel.org/bpf/ddb96bb975cbfddb1546cf5da60e77d5100b533c.1638189075.git.pabeni@redhat.com
Diffstat (limited to 'drivers/net/tun.c')
-rw-r--r--drivers/net/tun.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 1572878c3403..0e5d2272f63a 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1551,7 +1551,7 @@ static int tun_xdp_act(struct tun_struct *tun, struct bpf_prog *xdp_prog,
case XDP_PASS:
break;
default:
- bpf_warn_invalid_xdp_action(act);
+ bpf_warn_invalid_xdp_action(tun->dev, xdp_prog, act);
fallthrough;
case XDP_ABORTED:
trace_xdp_exception(tun->dev, xdp_prog, act);