From 836b2fe544a5e9b5ce116622cb36fba33838c6fd Mon Sep 17 00:00:00 2001 From: Eduard Zingerman Date: Fri, 4 Sep 2026 01:33:23 -0700 Subject: selftests/bpf: Check that JMP32 pointer vs zero jumps are not predicted Add jmp32_ptr_vs_zero_jne: the fall-through of the 32-bit compare, which the verifier used to skip, contains an out of bounds map value access, hence w/o the previous patch the program is accepted. See previous patch for detailed description. Reported-by: Nicholas Carlini Suggested-by: Nicholas Carlini Signed-off-by: Eduard Zingerman Link: https://lore.kernel.org/bpf/20260904083325.2083493-6-eddyz87@gmail.com Signed-off-by: Kumar Kartikeya Dwivedi --- rust/helpers/slab.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 rust/helpers/slab.c (limited to 'rust/helpers/slab.c') diff --git a/rust/helpers/slab.c b/rust/helpers/slab.c new file mode 100644 index 000000000..9279f0824 --- /dev/null +++ b/rust/helpers/slab.c @@ -0,0 +1,17 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include + +__rust_helper void *__must_check __realloc_size(2) +rust_helper_krealloc_node_align(const void *objp, size_t new_size, unsigned long align, + gfp_t flags, int node) +{ + return krealloc_node_align(objp, new_size, align, flags, node); +} + +__rust_helper void *__must_check __realloc_size(2) +rust_helper_kvrealloc_node_align(const void *p, size_t size, unsigned long align, + gfp_t flags, int node) +{ + return kvrealloc_node_align(p, size, align, flags, node); +} -- cgit v1.3.1