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[bpf-next,v2,12/15] selftests/bpf: Add unit tests for new sdiv/smod insns

Message ID 20230713060831.396527-1-yhs@fb.com (mailing list archive)
State Superseded
Delegated to: BPF
Headers show
Series bpf: Support new insns from cpu v4 | expand

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Commit Message

Yonghong Song July 13, 2023, 6:08 a.m. UTC 
Add unit tests for sdiv/smod insns.

Signed-off-by: Yonghong Song <yhs@fb.com>
---
 .../selftests/bpf/prog_tests/verifier.c       |   2 +
 .../selftests/bpf/progs/verifier_sdiv.c       | 763 ++++++++++++++++++
 2 files changed, 765 insertions(+)
 create mode 100644 tools/testing/selftests/bpf/progs/verifier_sdiv.c

Comments

Eduard Zingerman July 18, 2023, 11:10 p.m. UTC | #1 
On Wed, 2023-07-12 at 23:08 -0700, Yonghong Song wrote:
> Add unit tests for sdiv/smod insns.
> 
> Signed-off-by: Yonghong Song <yhs@fb.com>
> ---
>  .../selftests/bpf/prog_tests/verifier.c       |   2 +
>  .../selftests/bpf/progs/verifier_sdiv.c       | 763 ++++++++++++++++++
>  2 files changed, 765 insertions(+)
>  create mode 100644 tools/testing/selftests/bpf/progs/verifier_sdiv.c
> 
> diff --git a/tools/testing/selftests/bpf/prog_tests/verifier.c b/tools/testing/selftests/bpf/prog_tests/verifier.c
> index 885532540bc3..a591d7b673f1 100644
> --- a/tools/testing/selftests/bpf/prog_tests/verifier.c
> +++ b/tools/testing/selftests/bpf/prog_tests/verifier.c
> @@ -54,6 +54,7 @@
>  #include "verifier_ringbuf.skel.h"
>  #include "verifier_runtime_jit.skel.h"
>  #include "verifier_scalar_ids.skel.h"
> +#include "verifier_sdiv.skel.h"
>  #include "verifier_search_pruning.skel.h"
>  #include "verifier_sock.skel.h"
>  #include "verifier_spill_fill.skel.h"
> @@ -159,6 +160,7 @@ void test_verifier_regalloc(void)             { RUN(verifier_regalloc); }
>  void test_verifier_ringbuf(void)              { RUN(verifier_ringbuf); }
>  void test_verifier_runtime_jit(void)          { RUN(verifier_runtime_jit); }
>  void test_verifier_scalar_ids(void)           { RUN(verifier_scalar_ids); }
> +void test_verifier_sdiv(void)                 { RUN(verifier_sdiv); }
>  void test_verifier_search_pruning(void)       { RUN(verifier_search_pruning); }
>  void test_verifier_sock(void)                 { RUN(verifier_sock); }
>  void test_verifier_spill_fill(void)           { RUN(verifier_spill_fill); }
> diff --git a/tools/testing/selftests/bpf/progs/verifier_sdiv.c b/tools/testing/selftests/bpf/progs/verifier_sdiv.c
> new file mode 100644
> index 000000000000..d92098d670ef
> --- /dev/null
> +++ b/tools/testing/selftests/bpf/progs/verifier_sdiv.c
> @@ -0,0 +1,763 @@
> +// SPDX-License-Identifier: GPL-2.0
> +
> +#include <linux/bpf.h>
> +#include <bpf/bpf_helpers.h>
> +#include "bpf_misc.h"
> +
> +SEC("socket")
> +__description("SDIV32, non-zero imm divisor, check 1")
> +__success __success_unpriv __retval(-20)
> +__naked void sdiv32_non_zero_imm_1(void)
> +{
> +	asm volatile ("					\
> +	w0 = -41;					\
> +	w0 s/= 2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV32, non-zero imm divisor, check 2")
> +__success __success_unpriv __retval(-20)
> +__naked void sdiv32_non_zero_imm_2(void)
> +{
> +	asm volatile ("					\
> +	w0 = 41;					\
> +	w0 s/= -2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV32, non-zero imm divisor, check 3")
> +__success __success_unpriv __retval(20)
> +__naked void sdiv32_non_zero_imm_3(void)
> +{
> +	asm volatile ("					\
> +	w0 = -41;					\
> +	w0 s/= -2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV32, non-zero imm divisor, check 4")
> +__success __success_unpriv __retval(-21)
> +__naked void sdiv32_non_zero_imm_4(void)
> +{
> +	asm volatile ("					\
> +	w0 = -42;					\
> +	w0 s/= 2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV32, non-zero imm divisor, check 5")
> +__success __success_unpriv __retval(-21)
> +__naked void sdiv32_non_zero_imm_5(void)
> +{
> +	asm volatile ("					\
> +	w0 = 42;					\
> +	w0 s/= -2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV32, non-zero imm divisor, check 6")
> +__success __success_unpriv __retval(21)
> +__naked void sdiv32_non_zero_imm_6(void)
> +{
> +	asm volatile ("					\
> +	w0 = -42;					\
> +	w0 s/= -2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV32, non-zero imm divisor, check 7")
> +__success __success_unpriv __retval(21)
> +__naked void sdiv32_non_zero_imm_7(void)
> +{
> +	asm volatile ("					\
> +	w0 = 42;					\
> +	w0 s/= 2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV32, non-zero imm divisor, check 8")
> +__success __success_unpriv __retval(20)
> +__naked void sdiv32_non_zero_imm_8(void)
> +{
> +	asm volatile ("					\
> +	w0 = 41;					\
> +	w0 s/= 2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV32, non-zero reg divisor, check 1")
> +__success __success_unpriv __retval(-20)
> +__naked void sdiv32_non_zero_reg_1(void)
> +{
> +	asm volatile ("					\
> +	w0 = -41;					\
> +	w1 = 2;						\
> +	w0 s/= w1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV32, non-zero reg divisor, check 2")
> +__success __success_unpriv __retval(-20)
> +__naked void sdiv32_non_zero_reg_2(void)
> +{
> +	asm volatile ("					\
> +	w0 = 41;					\
> +	w1 = -2;					\
> +	w0 s/= w1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV32, non-zero reg divisor, check 3")
> +__success __success_unpriv __retval(20)
> +__naked void sdiv32_non_zero_reg_3(void)
> +{
> +	asm volatile ("					\
> +	w0 = -41;					\
> +	w1 = -2;					\
> +	w0 s/= w1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV32, non-zero reg divisor, check 4")
> +__success __success_unpriv __retval(-21)
> +__naked void sdiv32_non_zero_reg_4(void)
> +{
> +	asm volatile ("					\
> +	w0 = -42;					\
> +	w1 = 2;						\
> +	w0 s/= w1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV32, non-zero reg divisor, check 5")
> +__success __success_unpriv __retval(-21)
> +__naked void sdiv32_non_zero_reg_5(void)
> +{
> +	asm volatile ("					\
> +	w0 = 42;					\
> +	w1 = -2;					\
> +	w0 s/= w1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV32, non-zero reg divisor, check 6")
> +__success __success_unpriv __retval(21)
> +__naked void sdiv32_non_zero_reg_6(void)
> +{
> +	asm volatile ("					\
> +	w0 = -42;					\
> +	w1 = -2;					\
> +	w0 s/= w1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV32, non-zero reg divisor, check 7")
> +__success __success_unpriv __retval(21)
> +__naked void sdiv32_non_zero_reg_7(void)
> +{
> +	asm volatile ("					\
> +	w0 = 42;					\
> +	w1 = 2;						\
> +	w0 s/= w1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV32, non-zero reg divisor, check 8")
> +__success __success_unpriv __retval(20)
> +__naked void sdiv32_non_zero_reg_8(void)
> +{
> +	asm volatile ("					\
> +	w0 = 41;					\
> +	w1 = 2;						\
> +	w0 s/= w1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV64, non-zero imm divisor, check 1")
> +__success __success_unpriv __retval(-20)
> +__naked void sdiv64_non_zero_imm_1(void)
> +{
> +	asm volatile ("					\
> +	r0 = -41;					\
> +	r0 s/= 2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV64, non-zero imm divisor, check 2")
> +__success __success_unpriv __retval(-20)
> +__naked void sdiv64_non_zero_imm_2(void)
> +{
> +	asm volatile ("					\
> +	r0 = 41;					\
> +	r0 s/= -2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV64, non-zero imm divisor, check 3")
> +__success __success_unpriv __retval(20)
> +__naked void sdiv64_non_zero_imm_3(void)
> +{
> +	asm volatile ("					\
> +	r0 = -41;					\
> +	r0 s/= -2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV64, non-zero imm divisor, check 4")
> +__success __success_unpriv __retval(-21)
> +__naked void sdiv64_non_zero_imm_4(void)
> +{
> +	asm volatile ("					\
> +	r0 = -42;					\
> +	r0 s/= 2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV64, non-zero imm divisor, check 5")
> +__success __success_unpriv __retval(-21)
> +__naked void sdiv64_non_zero_imm_5(void)
> +{
> +	asm volatile ("					\
> +	r0 = 42;					\
> +	r0 s/= -2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV64, non-zero imm divisor, check 6")
> +__success __success_unpriv __retval(21)
> +__naked void sdiv64_non_zero_imm_6(void)
> +{
> +	asm volatile ("					\
> +	r0 = -42;					\
> +	r0 s/= -2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV64, non-zero reg divisor, check 1")
> +__success __success_unpriv __retval(-20)
> +__naked void sdiv64_non_zero_reg_1(void)
> +{
> +	asm volatile ("					\
> +	r0 = -41;					\
> +	r1 = 2;						\
> +	r0 s/= r1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV64, non-zero reg divisor, check 2")
> +__success __success_unpriv __retval(-20)
> +__naked void sdiv64_non_zero_reg_2(void)
> +{
> +	asm volatile ("					\
> +	r0 = 41;					\
> +	r1 = -2;					\
> +	r0 s/= r1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV64, non-zero reg divisor, check 3")
> +__success __success_unpriv __retval(20)
> +__naked void sdiv64_non_zero_reg_3(void)
> +{
> +	asm volatile ("					\
> +	r0 = -41;					\
> +	r1 = -2;					\
> +	r0 s/= r1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV64, non-zero reg divisor, check 4")
> +__success __success_unpriv __retval(-21)
> +__naked void sdiv64_non_zero_reg_4(void)
> +{
> +	asm volatile ("					\
> +	r0 = -42;					\
> +	r1 = 2;						\
> +	r0 s/= r1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV64, non-zero reg divisor, check 5")
> +__success __success_unpriv __retval(-21)
> +__naked void sdiv64_non_zero_reg_5(void)
> +{
> +	asm volatile ("					\
> +	r0 = 42;					\
> +	r1 = -2;					\
> +	r0 s/= r1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV64, non-zero reg divisor, check 6")
> +__success __success_unpriv __retval(21)
> +__naked void sdiv64_non_zero_reg_6(void)
> +{
> +	asm volatile ("					\
> +	r0 = -42;					\
> +	r1 = -2;					\
> +	r0 s/= r1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD32, non-zero imm divisor, check 1")
> +__success __success_unpriv __retval(-1)
> +__naked void smod32_non_zero_imm_1(void)
> +{
> +	asm volatile ("					\
> +	w0 = -41;					\
> +	w0 s%%= 2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD32, non-zero imm divisor, check 2")
> +__success __success_unpriv __retval(1)
> +__naked void smod32_non_zero_imm_2(void)
> +{
> +	asm volatile ("					\
> +	w0 = 41;					\
> +	w0 s%%= -2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD32, non-zero imm divisor, check 3")
> +__success __success_unpriv __retval(-1)
> +__naked void smod32_non_zero_imm_3(void)
> +{
> +	asm volatile ("					\
> +	w0 = -41;					\
> +	w0 s%%= -2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD32, non-zero imm divisor, check 4")
> +__success __success_unpriv __retval(0)
> +__naked void smod32_non_zero_imm_4(void)
> +{
> +	asm volatile ("					\
> +	w0 = -42;					\
> +	w0 s%%= 2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD32, non-zero imm divisor, check 5")
> +__success __success_unpriv __retval(0)
> +__naked void smod32_non_zero_imm_5(void)
> +{
> +	asm volatile ("					\
> +	w0 = 42;					\
> +	w0 s%%= -2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD32, non-zero imm divisor, check 6")
> +__success __success_unpriv __retval(0)
> +__naked void smod32_non_zero_imm_6(void)
> +{
> +	asm volatile ("					\
> +	w0 = -42;					\
> +	w0 s%%= -2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD32, non-zero reg divisor, check 1")
> +__success __success_unpriv __retval(-1)
> +__naked void smod32_non_zero_reg_1(void)
> +{
> +	asm volatile ("					\
> +	w0 = -41;					\
> +	w1 = 2;						\
> +	w0 s%%= w1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD32, non-zero reg divisor, check 2")
> +__success __success_unpriv __retval(1)
> +__naked void smod32_non_zero_reg_2(void)
> +{
> +	asm volatile ("					\
> +	w0 = 41;					\
> +	w1 = -2;					\
> +	w0 s%%= w1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD32, non-zero reg divisor, check 3")
> +__success __success_unpriv __retval(-1)
> +__naked void smod32_non_zero_reg_3(void)
> +{
> +	asm volatile ("					\
> +	w0 = -41;					\
> +	w1 = -2;					\
> +	w0 s%%= w1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD32, non-zero reg divisor, check 4")
> +__success __success_unpriv __retval(0)
> +__naked void smod32_non_zero_reg_4(void)
> +{
> +	asm volatile ("					\
> +	w0 = -42;					\
> +	w1 = 2;						\
> +	w0 s%%= w1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD32, non-zero reg divisor, check 5")
> +__success __success_unpriv __retval(0)
> +__naked void smod32_non_zero_reg_5(void)
> +{
> +	asm volatile ("					\
> +	w0 = 42;					\
> +	w1 = -2;					\
> +	w0 s%%= w1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD32, non-zero reg divisor, check 6")
> +__success __success_unpriv __retval(0)
> +__naked void smod32_non_zero_reg_6(void)
> +{
> +	asm volatile ("					\
> +	w0 = -42;					\
> +	w1 = -2;					\
> +	w0 s%%= w1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD64, non-zero imm divisor, check 1")
> +__success __success_unpriv __retval(-1)
> +__naked void smod64_non_zero_imm_1(void)
> +{
> +	asm volatile ("					\
> +	r0 = -41;					\
> +	r0 s%%= 2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD64, non-zero imm divisor, check 2")
> +__success __success_unpriv __retval(1)
> +__naked void smod64_non_zero_imm_2(void)
> +{
> +	asm volatile ("					\
> +	r0 = 41;					\
> +	r0 s%%= -2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD64, non-zero imm divisor, check 3")
> +__success __success_unpriv __retval(-1)
> +__naked void smod64_non_zero_imm_3(void)
> +{
> +	asm volatile ("					\
> +	r0 = -41;					\
> +	r0 s%%= -2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD64, non-zero imm divisor, check 4")
> +__success __success_unpriv __retval(0)
> +__naked void smod64_non_zero_imm_4(void)
> +{
> +	asm volatile ("					\
> +	r0 = -42;					\
> +	r0 s%%= 2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD64, non-zero imm divisor, check 5")
> +__success __success_unpriv __retval(-0)
> +__naked void smod64_non_zero_imm_5(void)
> +{
> +	asm volatile ("					\
> +	r0 = 42;					\
> +	r0 s%%= -2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD64, non-zero imm divisor, check 6")
> +__success __success_unpriv __retval(0)
> +__naked void smod64_non_zero_imm_6(void)
> +{
> +	asm volatile ("					\
> +	r0 = -42;					\
> +	r0 s%%= -2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD64, non-zero imm divisor, check 7")
> +__success __success_unpriv __retval(0)
> +__naked void smod64_non_zero_imm_7(void)
> +{
> +	asm volatile ("					\
> +	r0 = 42;					\
> +	r0 s%%= 2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD64, non-zero imm divisor, check 8")
> +__success __success_unpriv __retval(1)
> +__naked void smod64_non_zero_imm_8(void)
> +{
> +	asm volatile ("					\
> +	r0 = 41;					\
> +	r0 s%%= 2;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD64, non-zero reg divisor, check 1")
> +__success __success_unpriv __retval(-1)
> +__naked void smod64_non_zero_reg_1(void)
> +{
> +	asm volatile ("					\
> +	r0 = -41;					\
> +	r1 = 2;						\
> +	r0 s%%= r1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD64, non-zero reg divisor, check 2")
> +__success __success_unpriv __retval(1)
> +__naked void smod64_non_zero_reg_2(void)
> +{
> +	asm volatile ("					\
> +	r0 = 41;					\
> +	r1 = -2;					\
> +	r0 s%%= r1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD64, non-zero reg divisor, check 3")
> +__success __success_unpriv __retval(-1)
> +__naked void smod64_non_zero_reg_3(void)
> +{
> +	asm volatile ("					\
> +	r0 = -41;					\
> +	r1 = -2;					\
> +	r0 s%%= r1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD64, non-zero reg divisor, check 4")
> +__success __success_unpriv __retval(0)
> +__naked void smod64_non_zero_reg_4(void)
> +{
> +	asm volatile ("					\
> +	r0 = -42;					\
> +	r1 = 2;						\
> +	r0 s%%= r1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD64, non-zero reg divisor, check 5")
> +__success __success_unpriv __retval(0)
> +__naked void smod64_non_zero_reg_5(void)
> +{
> +	asm volatile ("					\
> +	r0 = 42;					\
> +	r1 = -2;					\
> +	r0 s%%= r1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD64, non-zero reg divisor, check 6")
> +__success __success_unpriv __retval(0)
> +__naked void smod64_non_zero_reg_6(void)
> +{
> +	asm volatile ("					\
> +	r0 = -42;					\
> +	r1 = -2;					\
> +	r0 s%%= r1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD64, non-zero reg divisor, check 7")
> +__success __success_unpriv __retval(0)
> +__naked void smod64_non_zero_reg_7(void)
> +{
> +	asm volatile ("					\
> +	r0 = 42;					\
> +	r1 = 2;						\
> +	r0 s%%= r1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD64, non-zero reg divisor, check 8")
> +__success __success_unpriv __retval(1)
> +__naked void smod64_non_zero_reg_8(void)
> +{
> +	asm volatile ("					\
> +	r0 = 41;					\
> +	r1 = 2;						\
> +	r0 s%%= r1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SDIV32, zero divisor")
> +__success __success_unpriv __retval(42)
> +__naked void sdiv32_zero_divisor(void)
> +{
> +	asm volatile ("					\
> +	w0 = 42;					\
> +	w1 = 0;						\
> +	w2 = -1;					\
> +	w2 s/= w1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}

Maybe add "w0 = w2" in the end to check how division by zero modifies
the DST register?

> +
> +SEC("socket")
> +__description("SDIV64, zero divisor")
> +__success __success_unpriv __retval(42)
> +__naked void sdiv64_zero_divisor(void)
> +{
> +	asm volatile ("					\
> +	r0 = 42;					\
> +	r1 = 0;						\
> +	r2 = -1;					\
> +	r2 s/= r1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD32, zero divisor")
> +__success __success_unpriv __retval(42)
> +__naked void smod32_zero_divisor(void)
> +{
> +	asm volatile ("					\
> +	w0 = 42;					\
> +	w1 = 0;						\
> +	w2 = -1;					\
> +	w2 s%%= w1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +SEC("socket")
> +__description("SMOD64, zero divisor")
> +__success __success_unpriv __retval(42)
> +__naked void smod64_zero_divisor(void)
> +{
> +	asm volatile ("					\
> +	r0 = 42;					\
> +	r1 = 0;						\
> +	r2 = -1;					\
> +	r2 s%%= r1;					\
> +	exit;						\
> +"	::: __clobber_all);
> +}
> +
> +char _license[] SEC("license") = "GPL";
diff mbox series

Patch

diff --git a/tools/testing/selftests/bpf/prog_tests/verifier.c b/tools/testing/selftests/bpf/prog_tests/verifier.c
index 885532540bc3..a591d7b673f1 100644
--- a/tools/testing/selftests/bpf/prog_tests/verifier.c
+++ b/tools/testing/selftests/bpf/prog_tests/verifier.c
@@ -54,6 +54,7 @@ 
 #include "verifier_ringbuf.skel.h"
 #include "verifier_runtime_jit.skel.h"
 #include "verifier_scalar_ids.skel.h"
+#include "verifier_sdiv.skel.h"
 #include "verifier_search_pruning.skel.h"
 #include "verifier_sock.skel.h"
 #include "verifier_spill_fill.skel.h"
@@ -159,6 +160,7 @@  void test_verifier_regalloc(void)             { RUN(verifier_regalloc); }
 void test_verifier_ringbuf(void)              { RUN(verifier_ringbuf); }
 void test_verifier_runtime_jit(void)          { RUN(verifier_runtime_jit); }
 void test_verifier_scalar_ids(void)           { RUN(verifier_scalar_ids); }
+void test_verifier_sdiv(void)                 { RUN(verifier_sdiv); }
 void test_verifier_search_pruning(void)       { RUN(verifier_search_pruning); }
 void test_verifier_sock(void)                 { RUN(verifier_sock); }
 void test_verifier_spill_fill(void)           { RUN(verifier_spill_fill); }
diff --git a/tools/testing/selftests/bpf/progs/verifier_sdiv.c b/tools/testing/selftests/bpf/progs/verifier_sdiv.c
new file mode 100644
index 000000000000..d92098d670ef
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/verifier_sdiv.c
@@ -0,0 +1,763 @@ 
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/bpf.h>
+#include <bpf/bpf_helpers.h>
+#include "bpf_misc.h"
+
+SEC("socket")
+__description("SDIV32, non-zero imm divisor, check 1")
+__success __success_unpriv __retval(-20)
+__naked void sdiv32_non_zero_imm_1(void)
+{
+	asm volatile ("					\
+	w0 = -41;					\
+	w0 s/= 2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV32, non-zero imm divisor, check 2")
+__success __success_unpriv __retval(-20)
+__naked void sdiv32_non_zero_imm_2(void)
+{
+	asm volatile ("					\
+	w0 = 41;					\
+	w0 s/= -2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV32, non-zero imm divisor, check 3")
+__success __success_unpriv __retval(20)
+__naked void sdiv32_non_zero_imm_3(void)
+{
+	asm volatile ("					\
+	w0 = -41;					\
+	w0 s/= -2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV32, non-zero imm divisor, check 4")
+__success __success_unpriv __retval(-21)
+__naked void sdiv32_non_zero_imm_4(void)
+{
+	asm volatile ("					\
+	w0 = -42;					\
+	w0 s/= 2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV32, non-zero imm divisor, check 5")
+__success __success_unpriv __retval(-21)
+__naked void sdiv32_non_zero_imm_5(void)
+{
+	asm volatile ("					\
+	w0 = 42;					\
+	w0 s/= -2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV32, non-zero imm divisor, check 6")
+__success __success_unpriv __retval(21)
+__naked void sdiv32_non_zero_imm_6(void)
+{
+	asm volatile ("					\
+	w0 = -42;					\
+	w0 s/= -2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV32, non-zero imm divisor, check 7")
+__success __success_unpriv __retval(21)
+__naked void sdiv32_non_zero_imm_7(void)
+{
+	asm volatile ("					\
+	w0 = 42;					\
+	w0 s/= 2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV32, non-zero imm divisor, check 8")
+__success __success_unpriv __retval(20)
+__naked void sdiv32_non_zero_imm_8(void)
+{
+	asm volatile ("					\
+	w0 = 41;					\
+	w0 s/= 2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV32, non-zero reg divisor, check 1")
+__success __success_unpriv __retval(-20)
+__naked void sdiv32_non_zero_reg_1(void)
+{
+	asm volatile ("					\
+	w0 = -41;					\
+	w1 = 2;						\
+	w0 s/= w1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV32, non-zero reg divisor, check 2")
+__success __success_unpriv __retval(-20)
+__naked void sdiv32_non_zero_reg_2(void)
+{
+	asm volatile ("					\
+	w0 = 41;					\
+	w1 = -2;					\
+	w0 s/= w1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV32, non-zero reg divisor, check 3")
+__success __success_unpriv __retval(20)
+__naked void sdiv32_non_zero_reg_3(void)
+{
+	asm volatile ("					\
+	w0 = -41;					\
+	w1 = -2;					\
+	w0 s/= w1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV32, non-zero reg divisor, check 4")
+__success __success_unpriv __retval(-21)
+__naked void sdiv32_non_zero_reg_4(void)
+{
+	asm volatile ("					\
+	w0 = -42;					\
+	w1 = 2;						\
+	w0 s/= w1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV32, non-zero reg divisor, check 5")
+__success __success_unpriv __retval(-21)
+__naked void sdiv32_non_zero_reg_5(void)
+{
+	asm volatile ("					\
+	w0 = 42;					\
+	w1 = -2;					\
+	w0 s/= w1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV32, non-zero reg divisor, check 6")
+__success __success_unpriv __retval(21)
+__naked void sdiv32_non_zero_reg_6(void)
+{
+	asm volatile ("					\
+	w0 = -42;					\
+	w1 = -2;					\
+	w0 s/= w1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV32, non-zero reg divisor, check 7")
+__success __success_unpriv __retval(21)
+__naked void sdiv32_non_zero_reg_7(void)
+{
+	asm volatile ("					\
+	w0 = 42;					\
+	w1 = 2;						\
+	w0 s/= w1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV32, non-zero reg divisor, check 8")
+__success __success_unpriv __retval(20)
+__naked void sdiv32_non_zero_reg_8(void)
+{
+	asm volatile ("					\
+	w0 = 41;					\
+	w1 = 2;						\
+	w0 s/= w1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV64, non-zero imm divisor, check 1")
+__success __success_unpriv __retval(-20)
+__naked void sdiv64_non_zero_imm_1(void)
+{
+	asm volatile ("					\
+	r0 = -41;					\
+	r0 s/= 2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV64, non-zero imm divisor, check 2")
+__success __success_unpriv __retval(-20)
+__naked void sdiv64_non_zero_imm_2(void)
+{
+	asm volatile ("					\
+	r0 = 41;					\
+	r0 s/= -2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV64, non-zero imm divisor, check 3")
+__success __success_unpriv __retval(20)
+__naked void sdiv64_non_zero_imm_3(void)
+{
+	asm volatile ("					\
+	r0 = -41;					\
+	r0 s/= -2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV64, non-zero imm divisor, check 4")
+__success __success_unpriv __retval(-21)
+__naked void sdiv64_non_zero_imm_4(void)
+{
+	asm volatile ("					\
+	r0 = -42;					\
+	r0 s/= 2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV64, non-zero imm divisor, check 5")
+__success __success_unpriv __retval(-21)
+__naked void sdiv64_non_zero_imm_5(void)
+{
+	asm volatile ("					\
+	r0 = 42;					\
+	r0 s/= -2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV64, non-zero imm divisor, check 6")
+__success __success_unpriv __retval(21)
+__naked void sdiv64_non_zero_imm_6(void)
+{
+	asm volatile ("					\
+	r0 = -42;					\
+	r0 s/= -2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV64, non-zero reg divisor, check 1")
+__success __success_unpriv __retval(-20)
+__naked void sdiv64_non_zero_reg_1(void)
+{
+	asm volatile ("					\
+	r0 = -41;					\
+	r1 = 2;						\
+	r0 s/= r1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV64, non-zero reg divisor, check 2")
+__success __success_unpriv __retval(-20)
+__naked void sdiv64_non_zero_reg_2(void)
+{
+	asm volatile ("					\
+	r0 = 41;					\
+	r1 = -2;					\
+	r0 s/= r1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV64, non-zero reg divisor, check 3")
+__success __success_unpriv __retval(20)
+__naked void sdiv64_non_zero_reg_3(void)
+{
+	asm volatile ("					\
+	r0 = -41;					\
+	r1 = -2;					\
+	r0 s/= r1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV64, non-zero reg divisor, check 4")
+__success __success_unpriv __retval(-21)
+__naked void sdiv64_non_zero_reg_4(void)
+{
+	asm volatile ("					\
+	r0 = -42;					\
+	r1 = 2;						\
+	r0 s/= r1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV64, non-zero reg divisor, check 5")
+__success __success_unpriv __retval(-21)
+__naked void sdiv64_non_zero_reg_5(void)
+{
+	asm volatile ("					\
+	r0 = 42;					\
+	r1 = -2;					\
+	r0 s/= r1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV64, non-zero reg divisor, check 6")
+__success __success_unpriv __retval(21)
+__naked void sdiv64_non_zero_reg_6(void)
+{
+	asm volatile ("					\
+	r0 = -42;					\
+	r1 = -2;					\
+	r0 s/= r1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD32, non-zero imm divisor, check 1")
+__success __success_unpriv __retval(-1)
+__naked void smod32_non_zero_imm_1(void)
+{
+	asm volatile ("					\
+	w0 = -41;					\
+	w0 s%%= 2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD32, non-zero imm divisor, check 2")
+__success __success_unpriv __retval(1)
+__naked void smod32_non_zero_imm_2(void)
+{
+	asm volatile ("					\
+	w0 = 41;					\
+	w0 s%%= -2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD32, non-zero imm divisor, check 3")
+__success __success_unpriv __retval(-1)
+__naked void smod32_non_zero_imm_3(void)
+{
+	asm volatile ("					\
+	w0 = -41;					\
+	w0 s%%= -2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD32, non-zero imm divisor, check 4")
+__success __success_unpriv __retval(0)
+__naked void smod32_non_zero_imm_4(void)
+{
+	asm volatile ("					\
+	w0 = -42;					\
+	w0 s%%= 2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD32, non-zero imm divisor, check 5")
+__success __success_unpriv __retval(0)
+__naked void smod32_non_zero_imm_5(void)
+{
+	asm volatile ("					\
+	w0 = 42;					\
+	w0 s%%= -2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD32, non-zero imm divisor, check 6")
+__success __success_unpriv __retval(0)
+__naked void smod32_non_zero_imm_6(void)
+{
+	asm volatile ("					\
+	w0 = -42;					\
+	w0 s%%= -2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD32, non-zero reg divisor, check 1")
+__success __success_unpriv __retval(-1)
+__naked void smod32_non_zero_reg_1(void)
+{
+	asm volatile ("					\
+	w0 = -41;					\
+	w1 = 2;						\
+	w0 s%%= w1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD32, non-zero reg divisor, check 2")
+__success __success_unpriv __retval(1)
+__naked void smod32_non_zero_reg_2(void)
+{
+	asm volatile ("					\
+	w0 = 41;					\
+	w1 = -2;					\
+	w0 s%%= w1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD32, non-zero reg divisor, check 3")
+__success __success_unpriv __retval(-1)
+__naked void smod32_non_zero_reg_3(void)
+{
+	asm volatile ("					\
+	w0 = -41;					\
+	w1 = -2;					\
+	w0 s%%= w1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD32, non-zero reg divisor, check 4")
+__success __success_unpriv __retval(0)
+__naked void smod32_non_zero_reg_4(void)
+{
+	asm volatile ("					\
+	w0 = -42;					\
+	w1 = 2;						\
+	w0 s%%= w1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD32, non-zero reg divisor, check 5")
+__success __success_unpriv __retval(0)
+__naked void smod32_non_zero_reg_5(void)
+{
+	asm volatile ("					\
+	w0 = 42;					\
+	w1 = -2;					\
+	w0 s%%= w1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD32, non-zero reg divisor, check 6")
+__success __success_unpriv __retval(0)
+__naked void smod32_non_zero_reg_6(void)
+{
+	asm volatile ("					\
+	w0 = -42;					\
+	w1 = -2;					\
+	w0 s%%= w1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD64, non-zero imm divisor, check 1")
+__success __success_unpriv __retval(-1)
+__naked void smod64_non_zero_imm_1(void)
+{
+	asm volatile ("					\
+	r0 = -41;					\
+	r0 s%%= 2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD64, non-zero imm divisor, check 2")
+__success __success_unpriv __retval(1)
+__naked void smod64_non_zero_imm_2(void)
+{
+	asm volatile ("					\
+	r0 = 41;					\
+	r0 s%%= -2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD64, non-zero imm divisor, check 3")
+__success __success_unpriv __retval(-1)
+__naked void smod64_non_zero_imm_3(void)
+{
+	asm volatile ("					\
+	r0 = -41;					\
+	r0 s%%= -2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD64, non-zero imm divisor, check 4")
+__success __success_unpriv __retval(0)
+__naked void smod64_non_zero_imm_4(void)
+{
+	asm volatile ("					\
+	r0 = -42;					\
+	r0 s%%= 2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD64, non-zero imm divisor, check 5")
+__success __success_unpriv __retval(-0)
+__naked void smod64_non_zero_imm_5(void)
+{
+	asm volatile ("					\
+	r0 = 42;					\
+	r0 s%%= -2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD64, non-zero imm divisor, check 6")
+__success __success_unpriv __retval(0)
+__naked void smod64_non_zero_imm_6(void)
+{
+	asm volatile ("					\
+	r0 = -42;					\
+	r0 s%%= -2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD64, non-zero imm divisor, check 7")
+__success __success_unpriv __retval(0)
+__naked void smod64_non_zero_imm_7(void)
+{
+	asm volatile ("					\
+	r0 = 42;					\
+	r0 s%%= 2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD64, non-zero imm divisor, check 8")
+__success __success_unpriv __retval(1)
+__naked void smod64_non_zero_imm_8(void)
+{
+	asm volatile ("					\
+	r0 = 41;					\
+	r0 s%%= 2;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD64, non-zero reg divisor, check 1")
+__success __success_unpriv __retval(-1)
+__naked void smod64_non_zero_reg_1(void)
+{
+	asm volatile ("					\
+	r0 = -41;					\
+	r1 = 2;						\
+	r0 s%%= r1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD64, non-zero reg divisor, check 2")
+__success __success_unpriv __retval(1)
+__naked void smod64_non_zero_reg_2(void)
+{
+	asm volatile ("					\
+	r0 = 41;					\
+	r1 = -2;					\
+	r0 s%%= r1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD64, non-zero reg divisor, check 3")
+__success __success_unpriv __retval(-1)
+__naked void smod64_non_zero_reg_3(void)
+{
+	asm volatile ("					\
+	r0 = -41;					\
+	r1 = -2;					\
+	r0 s%%= r1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD64, non-zero reg divisor, check 4")
+__success __success_unpriv __retval(0)
+__naked void smod64_non_zero_reg_4(void)
+{
+	asm volatile ("					\
+	r0 = -42;					\
+	r1 = 2;						\
+	r0 s%%= r1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD64, non-zero reg divisor, check 5")
+__success __success_unpriv __retval(0)
+__naked void smod64_non_zero_reg_5(void)
+{
+	asm volatile ("					\
+	r0 = 42;					\
+	r1 = -2;					\
+	r0 s%%= r1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD64, non-zero reg divisor, check 6")
+__success __success_unpriv __retval(0)
+__naked void smod64_non_zero_reg_6(void)
+{
+	asm volatile ("					\
+	r0 = -42;					\
+	r1 = -2;					\
+	r0 s%%= r1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD64, non-zero reg divisor, check 7")
+__success __success_unpriv __retval(0)
+__naked void smod64_non_zero_reg_7(void)
+{
+	asm volatile ("					\
+	r0 = 42;					\
+	r1 = 2;						\
+	r0 s%%= r1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD64, non-zero reg divisor, check 8")
+__success __success_unpriv __retval(1)
+__naked void smod64_non_zero_reg_8(void)
+{
+	asm volatile ("					\
+	r0 = 41;					\
+	r1 = 2;						\
+	r0 s%%= r1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV32, zero divisor")
+__success __success_unpriv __retval(42)
+__naked void sdiv32_zero_divisor(void)
+{
+	asm volatile ("					\
+	w0 = 42;					\
+	w1 = 0;						\
+	w2 = -1;					\
+	w2 s/= w1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SDIV64, zero divisor")
+__success __success_unpriv __retval(42)
+__naked void sdiv64_zero_divisor(void)
+{
+	asm volatile ("					\
+	r0 = 42;					\
+	r1 = 0;						\
+	r2 = -1;					\
+	r2 s/= r1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD32, zero divisor")
+__success __success_unpriv __retval(42)
+__naked void smod32_zero_divisor(void)
+{
+	asm volatile ("					\
+	w0 = 42;					\
+	w1 = 0;						\
+	w2 = -1;					\
+	w2 s%%= w1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+SEC("socket")
+__description("SMOD64, zero divisor")
+__success __success_unpriv __retval(42)
+__naked void smod64_zero_divisor(void)
+{
+	asm volatile ("					\
+	r0 = 42;					\
+	r1 = 0;						\
+	r2 = -1;					\
+	r2 s%%= r1;					\
+	exit;						\
+"	::: __clobber_all);
+}
+
+char _license[] SEC("license") = "GPL";