| Message ID | f617d4d10690af09968af6f829e923a1a61c8545.1652982525.git.esyr@redhat.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Fix kprobe_multi interface issues for 5.18 | expand |
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c index 26cf99c..d6db124 100644 --- a/kernel/trace/bpf_trace.c +++ b/kernel/trace/bpf_trace.c @@ -2412,7 +2412,7 @@ int bpf_kprobe_multi_link_attach(const union bpf_attr *attr, struct bpf_prog *pr int err; /* no support for 32bit archs yet */ - if (sizeof(u64) != sizeof(void *)) + if (sizeof(u64) != sizeof(void *) || in_compat_syscall()) return -EOPNOTSUPP; if (prog->expected_attach_type != BPF_TRACE_KPROBE_MULTI)
Since bpf_kprobe_multi_link_attach doesn't support 32-bit kernels for whatever reason, having it enabled for compat processes on 64-bit kernels makes even less sense due to discrepances in the type sizes that it does not handle. Fixes: 0dcac272540613d4 ("bpf: Add multi kprobe link") Signed-off-by: Eugene Syromiatnikov <esyr@redhat.com> --- kernel/trace/bpf_trace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)