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/mutex.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 rust/helpers/mutex.c (limited to 'rust/helpers/mutex.c') diff --git a/rust/helpers/mutex.c b/rust/helpers/mutex.c new file mode 100644 index 000000000..1b07d6e64 --- /dev/null +++ b/rust/helpers/mutex.c @@ -0,0 +1,30 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include + +__rust_helper void rust_helper_mutex_lock(struct mutex *lock) +{ + mutex_lock(lock); +} + +__rust_helper int rust_helper_mutex_trylock(struct mutex *lock) +{ + return mutex_trylock(lock); +} + +__rust_helper void rust_helper___mutex_init(struct mutex *mutex, + const char *name, + struct lock_class_key *key) +{ + __mutex_init(mutex, name, key); +} + +__rust_helper void rust_helper_mutex_assert_is_held(struct mutex *mutex) +{ + lockdep_assert_held(mutex); +} + +__rust_helper void rust_helper_mutex_destroy(struct mutex *lock) +{ + mutex_destroy(lock); +} -- cgit v1.3.1