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 --- tools/testing/shared/maple-shim.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 tools/testing/shared/maple-shim.c (limited to 'tools/testing/shared/maple-shim.c') diff --git a/tools/testing/shared/maple-shim.c b/tools/testing/shared/maple-shim.c new file mode 100644 index 000000000..16252ee61 --- /dev/null +++ b/tools/testing/shared/maple-shim.c @@ -0,0 +1,14 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +/* Very simple shim around the maple tree. */ + +#include "maple-shared.h" +#include + +#include "../../../lib/maple_tree.c" + +void maple_rcu_cb(struct rcu_head *head) { + struct maple_node *node = container_of(head, struct maple_node, rcu); + + kmem_cache_free(maple_node_cache, node); +} -- cgit v1.3.1