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// SPDX-License-Identifier: GPL-2.0
/* Converted from tools/testing/selftests/bpf/verifier/int_ptr.c */
#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>
#include "bpf_misc.h"
SEC("socket")
__description("ARG_PTR_TO_LONG uninitialized")
__success
__failure_unpriv __msg_unpriv("invalid indirect read from stack R4 off -16+0 size 8")
__naked void arg_ptr_to_long_uninitialized(void)
{
asm volatile (" \
/* bpf_strtoul arg1 (buf) */ \
r7 = r10; \
r7 += -8; \
r0 = 0x00303036; \
*(u64*)(r7 + 0) = r0; \
r1 = r7; \
/* bpf_strtoul arg2 (buf_len) */ \
r2 = 4; \
/* bpf_strtoul arg3 (flags) */ \
r3 = 0; \
/* bpf_strtoul arg4 (res) */ \
r7 += -8; \
r4 = r7; \
/* bpf_strtoul() */ \
call %[bpf_strtoul]; \
r0 = 1; \
exit; \
" :
: __imm(bpf_strtoul)
: __clobber_all);
}
SEC("socket")
__description("ARG_PTR_TO_LONG half-uninitialized")
/* in privileged mode reads from uninitialized stack locations are permitted */
__success __failure_unpriv
__msg_unpriv("invalid indirect read from stack R4 off -16+4 size 8")
__retval(0)
__naked void ptr_to_long_half_uninitialized(void)
{
asm volatile (" \
/* bpf_strtoul arg1 (buf) */ \
r7 = r10; \
r7 += -8; \
r0 = 0x00303036; \
*(u64*)(r7 + 0) = r0; \
r1 = r7; \
/* bpf_strtoul arg2 (buf_len) */ \
r2 = 4; \
/* bpf_strtoul arg3 (flags) */ \
r3 = 0; \
/* bpf_strtoul arg4 (res) */ \
r7 += -8; \
*(u32*)(r7 + 0) = r0; \
r4 = r7; \
/* bpf_strtoul() */ \
call %[bpf_strtoul]; \
r0 = 0; \
exit; \
" :
: __imm(bpf_strtoul)
: __clobber_all);
}
SEC("cgroup/sysctl")
__description("ARG_PTR_TO_LONG misaligned")
__failure __msg("misaligned stack access off 0+-20+0 size 8")
__naked void arg_ptr_to_long_misaligned(void)
{
asm volatile (" \
/* bpf_strtoul arg1 (buf) */ \
r7 = r10; \
r7 += -8; \
r0 = 0x00303036; \
*(u64*)(r7 + 0) = r0; \
r1 = r7; \
/* bpf_strtoul arg2 (buf_len) */ \
r2 = 4; \
/* bpf_strtoul arg3 (flags) */ \
r3 = 0; \
/* bpf_strtoul arg4 (res) */ \
r7 += -12; \
r0 = 0; \
*(u32*)(r7 + 0) = r0; \
*(u64*)(r7 + 4) = r0; \
r4 = r7; \
/* bpf_strtoul() */ \
call %[bpf_strtoul]; \
r0 = 1; \
exit; \
" :
: __imm(bpf_strtoul)
: __clobber_all);
}
SEC("cgroup/sysctl")
__description("ARG_PTR_TO_LONG size < sizeof(long)")
__failure __msg("invalid indirect access to stack R4 off=-4 size=8")
__naked void to_long_size_sizeof_long(void)
{
asm volatile (" \
/* bpf_strtoul arg1 (buf) */ \
r7 = r10; \
r7 += -16; \
r0 = 0x00303036; \
*(u64*)(r7 + 0) = r0; \
r1 = r7; \
/* bpf_strtoul arg2 (buf_len) */ \
r2 = 4; \
/* bpf_strtoul arg3 (flags) */ \
r3 = 0; \
/* bpf_strtoul arg4 (res) */ \
r7 += 12; \
*(u32*)(r7 + 0) = r0; \
r4 = r7; \
/* bpf_strtoul() */ \
call %[bpf_strtoul]; \
r0 = 1; \
exit; \
" :
: __imm(bpf_strtoul)
: __clobber_all);
}
SEC("cgroup/sysctl")
__description("ARG_PTR_TO_LONG initialized")
__success
__naked void arg_ptr_to_long_initialized(void)
{
asm volatile (" \
/* bpf_strtoul arg1 (buf) */ \
r7 = r10; \
r7 += -8; \
r0 = 0x00303036; \
*(u64*)(r7 + 0) = r0; \
r1 = r7; \
/* bpf_strtoul arg2 (buf_len) */ \
r2 = 4; \
/* bpf_strtoul arg3 (flags) */ \
r3 = 0; \
/* bpf_strtoul arg4 (res) */ \
r7 += -8; \
*(u64*)(r7 + 0) = r0; \
r4 = r7; \
/* bpf_strtoul() */ \
call %[bpf_strtoul]; \
r0 = 1; \
exit; \
" :
: __imm(bpf_strtoul)
: __clobber_all);
}
char _license[] SEC("license") = "GPL";
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