* [PATCH] arm64: patching: Annotate text_addrs, new_insns with __counted_by_ptr()
@ 2026-10-20 11:08 Thorsten Blum
0 siblings, 0 replies; only message in thread
From: Thorsten Blum @ 2026-10-20 11:08 UTC (permalink / raw)
To: Catalin Marinas, Will Deacon, Mark Rutland, Kees Cook,
Gustavo A. R. Silva, Thorsten Blum
Cc: linux-arm-kernel, linux-kernel, linux-hardening
Add __counted_by_ptr() to aarch64_insn_patch::text_addrs and
aarch64_insn_patch::new_insns to enable access bounds checking via
CONFIG_UBSAN_BOUNDS and CONFIG_FORTIFY_SOURCE.
Signed-off-by: Thorsten Blum <blum@kernel.org>
---
arch/arm64/kernel/patching.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/kernel/patching.c b/arch/arm64/kernel/patching.c
index 09f019c6547a..5fc7805a93f0 100644
--- a/arch/arm64/kernel/patching.c
+++ b/arch/arm64/kernel/patching.c
@@ -194,8 +194,8 @@ int __kprobes aarch64_insn_patch_text_nosync(void *addr, u32 insn)
}
struct aarch64_insn_patch {
- void **text_addrs;
- u32 *new_insns;
+ void **text_addrs __counted_by_ptr(insn_cnt);
+ u32 *new_insns __counted_by_ptr(insn_cnt);
int insn_cnt;
atomic_t cpu_count;
};
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2026-10-20 11:08 [PATCH] arm64: patching: Annotate text_addrs, new_insns with __counted_by_ptr() Thorsten Blum
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