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 --- tools/bootconfig/samples/bad-array-space-comment.bconf | 5 +++++ 1 file changed, 5 insertions(+) create mode 100644 tools/bootconfig/samples/bad-array-space-comment.bconf (limited to 'tools/bootconfig/samples/bad-array-space-comment.bconf') diff --git a/tools/bootconfig/samples/bad-array-space-comment.bconf b/tools/bootconfig/samples/bad-array-space-comment.bconf new file mode 100644 index 000000000..fda19e47d --- /dev/null +++ b/tools/bootconfig/samples/bad-array-space-comment.bconf @@ -0,0 +1,5 @@ +key = # comment + "value1", # comment1 + "value2" # comment2 +, + "value3" -- cgit v1.3.1