From 506ada89629ec7059b96ecfb0dc7d33ece0103ca Mon Sep 17 00:00:00 2001 From: Eduard Zingerman Date: Fri, 4 Sep 2026 17:05:56 -0700 Subject: bpf: mark a NULL kfunc argument precise check_kfunc_arg() allows bpf_register_is_null() for nullable arguments w/o marking the underlying scalar register precise. Hence a checkpoint created on such a path would prune against arbitrary scalar value. Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)") Signed-off-by: Eduard Zingerman Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com Signed-off-by: Alexei Starovoitov --- arch/alpha/lib/styncpy.S | 10 ++++++++++ 1 file changed, 10 insertions(+) create mode 100644 arch/alpha/lib/styncpy.S (limited to 'arch/alpha/lib/styncpy.S') diff --git a/arch/alpha/lib/styncpy.S b/arch/alpha/lib/styncpy.S new file mode 100644 index 000000000..f1078ff12 --- /dev/null +++ b/arch/alpha/lib/styncpy.S @@ -0,0 +1,10 @@ +#ifdef CONFIG_ALPHA_EV67 +#include "ev67-strncat.S" +#else +#include "strncat.S" +#endif +#ifdef CONFIG_ALPHA_EV6 +#include "ev6-stxncpy.S" +#else +#include "stxncpy.S" +#endif -- cgit v1.3.1