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 --- arch/powerpc/boot/of.h | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 arch/powerpc/boot/of.h (limited to 'arch/powerpc/boot/of.h') diff --git a/arch/powerpc/boot/of.h b/arch/powerpc/boot/of.h new file mode 100644 index 000000000..31b2f5dfd --- /dev/null +++ b/arch/powerpc/boot/of.h @@ -0,0 +1,47 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _PPC_BOOT_OF_H_ +#define _PPC_BOOT_OF_H_ + +#include "swab.h" + +typedef void *phandle; +typedef u32 ihandle; + +void of_init(void *promptr); +int of_call_prom(const char *service, int nargs, int nret, ...); +unsigned int of_claim(unsigned long virt, unsigned long size, + unsigned long align); +void *of_vmlinux_alloc(unsigned long size); +void of_exit(void); +void *of_finddevice(const char *name); +int of_getprop(const void *phandle, const char *name, void *buf, + const int buflen); +int of_setprop(const void *phandle, const char *name, const void *buf, + const int buflen); + +/* Console functions */ +void of_console_init(void); + +typedef u16 __be16; +typedef u32 __be32; +typedef u64 __be64; + +#ifdef __LITTLE_ENDIAN__ +#define cpu_to_be16(x) swab16(x) +#define be16_to_cpu(x) swab16(x) +#define cpu_to_be32(x) swab32(x) +#define be32_to_cpu(x) swab32(x) +#define cpu_to_be64(x) swab64(x) +#define be64_to_cpu(x) swab64(x) +#else +#define cpu_to_be16(x) (x) +#define be16_to_cpu(x) (x) +#define cpu_to_be32(x) (x) +#define be32_to_cpu(x) (x) +#define cpu_to_be64(x) (x) +#define be64_to_cpu(x) (x) +#endif + +#define PROM_ERROR (-1u) + +#endif /* _PPC_BOOT_OF_H_ */ -- cgit v1.3.1