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Diffstat (limited to 'tools/testing/selftests/bpf/progs/verifier_int_ptr.c')
-rw-r--r--tools/testing/selftests/bpf/progs/verifier_int_ptr.c157
1 files changed, 157 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/verifier_int_ptr.c b/tools/testing/selftests/bpf/progs/verifier_int_ptr.c
new file mode 100644
index 000000000000..b054f9c48143
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/verifier_int_ptr.c
@@ -0,0 +1,157 @@
+// 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("cgroup/sysctl")
+__description("ARG_PTR_TO_LONG uninitialized")
+__failure __msg("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 (0x0; 0x0)+-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";