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selftests/bpf: Add verifier tests for code pattern '<const> <cond_op> <non_const>'

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Add various tests for code pattern '<const> <cond_op> <non_const>' to
exercise the previous verifier patch.

The following are veristat changed number of processed insns stat
comparing the previous patch vs. this patch:

File                                                   Program                                               Insns (A)  Insns (B)  Insns  (DIFF)
-----------------------------------------------------  ----------------------------------------------------  ---------  ---------  -------------
test_seg6_loop.bpf.linked3.o                           __add_egr_x                                               12423      12314  -109 (-0.88%)

Only one program is affected with minor change.

Signed-off-by: Yonghong Song <yhs@fb.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20230406164510.1047757-1-yhs@fb.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Yonghong Song 2023-04-06 09:45:10 -07:00 committed by Alexei Starovoitov
parent 953d9f5bea
commit 23a88fae9f
1 changed files with 460 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

460
tools/testing/selftests/bpf/progs/verifier_bounds_deduction_non_const.c
View File

@ -176,4 +176,464 @@ l1_%=: \
: __clobber_all);
}
SEC("socket")
__description("check deducing bounds from non-const, jmp64, <const> > <non_const>, 1")
__success __retval(0)
__naked void deducing_bounds_from_non_const_9(void)
{
asm volatile (" \
call %[bpf_ktime_get_ns]; \
r2 = 0; \
if r2 > r0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: \
r0 -= r1; \
exit; \
" :
: __imm(bpf_ktime_get_ns)
: __clobber_all);
}
SEC("socket")
__description("check deducing bounds from non-const, jmp64, <const> > <non_const>, 2")
__success __retval(0)
__naked void deducing_bounds_from_non_const_10(void)
{
asm volatile (" \
call %[bpf_ktime_get_ns]; \
if r0 < 4 goto l0_%=; \
r2 = 4; \
if r2 > r0 goto l1_%=; \
l0_%=: \
r0 = 0; \
exit; \
l1_%=: \
r0 -= r1; \
exit; \
" :
: __imm(bpf_ktime_get_ns)
: __clobber_all);
}
SEC("socket")
__description("check deducing bounds from non-const, jmp64, <const> >= <non_const>")
__success __retval(0)
__naked void deducing_bounds_from_non_const_11(void)
{
asm volatile (" \
call %[bpf_ktime_get_ns]; \
if r0 < 4 goto l0_%=; \
r2 = 3; \
if r2 >= r0 goto l1_%=; \
l0_%=: \
r0 = 0; \
exit; \
l1_%=: \
r0 -= r1; \
exit; \
" :
: __imm(bpf_ktime_get_ns)
: __clobber_all);
}
SEC("socket")
__description("check deducing bounds from non-const, jmp64, <const> < <non_const>")
__success __retval(0)
__naked void deducing_bounds_from_non_const_12(void)
{
asm volatile (" \
call %[bpf_ktime_get_ns]; \
if r0 > 4 goto l0_%=; \
r2 = 4; \
if r2 < r0 goto l1_%=; \
l0_%=: \
r0 = 0; \
exit; \
l1_%=: \
r0 -= r1; \
exit; \
" :
: __imm(bpf_ktime_get_ns)
: __clobber_all);
}
SEC("socket")
__description("check deducing bounds from non-const, jmp64, <const> <= <non_const>")
__success __retval(0)
__naked void deducing_bounds_from_non_const_13(void)
{
asm volatile (" \
call %[bpf_ktime_get_ns]; \
if r0 >= 4 goto l0_%=; \
r2 = 4; \
if r2 <= r0 goto l1_%=; \
l0_%=: \
r0 = 0; \
exit; \
l1_%=: \
r0 -= r1; \
exit; \
" :
: __imm(bpf_ktime_get_ns)
: __clobber_all);
}
SEC("socket")
__description("check deducing bounds from non-const, jmp64, <const> == <non_const>")
__success __retval(0)
__naked void deducing_bounds_from_non_const_14(void)
{
asm volatile (" \
call %[bpf_ktime_get_ns]; \
if r0 < 3 goto l0_%=; \
r2 = 2; \
if r2 == r0 goto l1_%=; \
l0_%=: \
r0 = 0; \
exit; \
l1_%=: \
r0 -= r1; \
exit; \
" :
: __imm(bpf_ktime_get_ns)
: __clobber_all);
}
SEC("socket")
__description("check deducing bounds from non-const, jmp64, <const> s> <non_const>")
__success __retval(0)
__naked void deducing_bounds_from_non_const_15(void)
{
asm volatile (" \
call %[bpf_ktime_get_ns]; \
if r0 s< 4 goto l0_%=; \
r2 = 4; \
if r2 s> r0 goto l1_%=; \
l0_%=: \
r0 = 0; \
exit; \
l1_%=: \
r0 -= r1; \
exit; \
" :
: __imm(bpf_ktime_get_ns)
: __clobber_all);
}
SEC("socket")
__description("check deducing bounds from non-const, jmp64, <const> s>= <non_const>")
__success __retval(0)
__naked void deducing_bounds_from_non_const_16(void)
{
asm volatile (" \
call %[bpf_ktime_get_ns]; \
if r0 s< 4 goto l0_%=; \
r2 = 3; \
if r2 s>= r0 goto l1_%=; \
l0_%=: \
r0 = 0; \
exit; \
l1_%=: \
r0 -= r1; \
exit; \
" :
: __imm(bpf_ktime_get_ns)
: __clobber_all);
}
SEC("socket")
__description("check deducing bounds from non-const, jmp64, <const> s< <non_const>")
__success __retval(0)
__naked void deducing_bounds_from_non_const_17(void)
{
asm volatile (" \
call %[bpf_ktime_get_ns]; \
if r0 s> 4 goto l0_%=; \
r2 = 4; \
if r2 s< r0 goto l1_%=; \
l0_%=: \
r0 = 0; \
exit; \
l1_%=: \
r0 -= r1; \
exit; \
" :
: __imm(bpf_ktime_get_ns)
: __clobber_all);
}
SEC("socket")
__description("check deducing bounds from non-const, jmp64, <const> s<= <non_const>")
__success __retval(0)
__naked void deducing_bounds_from_non_const_18(void)
{
asm volatile (" \
call %[bpf_ktime_get_ns]; \
if r0 s> 4 goto l0_%=; \
r2 = 5; \
if r2 s<= r0 goto l1_%=; \
l0_%=: \
r0 = 0; \
exit; \
l1_%=: \
r0 -= r1; \
exit; \
" :
: __imm(bpf_ktime_get_ns)
: __clobber_all);
}
SEC("socket")
__description("check deducing bounds from non-const, jmp64, <const> != <non_const>")
__success __retval(0)
__naked void deducing_bounds_from_non_const_19(void)
{
asm volatile (" \
call %[bpf_ktime_get_ns]; \
if r0 < 3 goto l0_%=; \
r2 = 2; \
if r2 != r0 goto l0_%=; \
goto l1_%=; \
l0_%=: \
r0 = 0; \
exit; \
l1_%=: \
r0 -= r1; \
exit; \
" :
: __imm(bpf_ktime_get_ns)
: __clobber_all);
}
SEC("socket")
__description("check deducing bounds from non-const, jmp32, <const> > <non_const>, 1")
__success __retval(0)
__naked void deducing_bounds_from_non_const_20(void)
{
asm volatile (" \
call %[bpf_ktime_get_ns]; \
w2 = 0; \
if w2 > w0 goto l0_%=; \
r0 = 0; \
exit; \
l0_%=: \
r0 -= r1; \
exit; \
" :
: __imm(bpf_ktime_get_ns)
: __clobber_all);
}
SEC("socket")
__description("check deducing bounds from non-const, jmp32, <const> > <non_const>, 2")
__success __retval(0)
__naked void deducing_bounds_from_non_const_21(void)
{
asm volatile (" \
call %[bpf_ktime_get_ns]; \
if w0 < 4 goto l0_%=; \
w2 = 4; \
if w2 > w0 goto l1_%=; \
l0_%=: \
r0 = 0; \
exit; \
l1_%=: \
r0 -= r1; \
exit; \
" :
: __imm(bpf_ktime_get_ns)
: __clobber_all);
}
SEC("socket")
__description("check deducing bounds from non-const, jmp32, <const> >= <non_const>")
__success __retval(0)
__naked void deducing_bounds_from_non_const_22(void)
{
asm volatile (" \
call %[bpf_ktime_get_ns]; \
if w0 < 4 goto l0_%=; \
w2 = 3; \
if w2 >= w0 goto l1_%=; \
l0_%=: \
r0 = 0; \
exit; \
l1_%=: \
r0 -= r1; \
exit; \
" :
: __imm(bpf_ktime_get_ns)
: __clobber_all);
}
SEC("socket")
__description("check deducing bounds from non-const, jmp32, <const> < <non_const>")
__success __retval(0)
__naked void deducing_bounds_from_non_const_23(void)
{
asm volatile (" \
call %[bpf_ktime_get_ns]; \
if w0 > 4 goto l0_%=; \
w2 = 4; \
if w2 < w0 goto l1_%=; \
l0_%=: \
r0 = 0; \
exit; \
l1_%=: \
r0 -= r1; \
exit; \
" :
: __imm(bpf_ktime_get_ns)
: __clobber_all);
}
SEC("socket")
__description("check deducing bounds from non-const, jmp32, <const> <= <non_const>")
__success __retval(0)
__naked void deducing_bounds_from_non_const_24(void)
{
asm volatile (" \
call %[bpf_ktime_get_ns]; \
if w0 >= 4 goto l0_%=; \
w2 = 4; \
if w2 <= w0 goto l1_%=; \
l0_%=: \
r0 = 0; \
exit; \
l1_%=: \
r0 -= r1; \
exit; \
" :
: __imm(bpf_ktime_get_ns)
: __clobber_all);
}
SEC("socket")
__description("check deducing bounds from non-const, jmp32, <const> == <non_const>")
__success __retval(0)
__naked void deducing_bounds_from_non_const_25(void)
{
asm volatile (" \
call %[bpf_ktime_get_ns]; \
if w0 < 4 goto l0_%=; \
w2 = 3; \
if w2 == w0 goto l1_%=; \
l0_%=: \
r0 = 0; \
exit; \
l1_%=: \
r0 -= r1; \
exit; \
" :
: __imm(bpf_ktime_get_ns)
: __clobber_all);
}
SEC("socket")
__description("check deducing bounds from non-const, jmp32, <const> s> <non_const>")
__success __retval(0)
__naked void deducing_bounds_from_non_const_26(void)
{
asm volatile (" \
call %[bpf_ktime_get_ns]; \
if w0 s< 4 goto l0_%=; \
w2 = 4; \
if w2 s> w0 goto l1_%=; \
l0_%=: \
r0 = 0; \
exit; \
l1_%=: \
r0 -= r1; \
exit; \
" :
: __imm(bpf_ktime_get_ns)
: __clobber_all);
}
SEC("socket")
__description("check deducing bounds from non-const, jmp32, <const> s>= <non_const>")
__success __retval(0)
__naked void deducing_bounds_from_non_const_27(void)
{
asm volatile (" \
call %[bpf_ktime_get_ns]; \
if w0 s< 4 goto l0_%=; \
w2 = 3; \
if w2 s>= w0 goto l1_%=; \
l0_%=: \
r0 = 0; \
exit; \
l1_%=: \
r0 -= r1; \
exit; \
" :
: __imm(bpf_ktime_get_ns)
: __clobber_all);
}
SEC("socket")
__description("check deducing bounds from non-const, jmp32, <const> s< <non_const>")
__success __retval(0)
__naked void deducing_bounds_from_non_const_28(void)
{
asm volatile (" \
call %[bpf_ktime_get_ns]; \
if w0 s> 4 goto l0_%=; \
w2 = 5; \
if w2 s< w0 goto l1_%=; \
l0_%=: \
r0 = 0; \
exit; \
l1_%=: \
r0 -= r1; \
exit; \
" :
: __imm(bpf_ktime_get_ns)
: __clobber_all);
}
SEC("socket")
__description("check deducing bounds from non-const, jmp32, <const> s<= <non_const>")
__success __retval(0)
__naked void deducing_bounds_from_non_const_29(void)
{
asm volatile (" \
call %[bpf_ktime_get_ns]; \
if w0 s>= 4 goto l0_%=; \
w2 = 4; \
if w2 s<= w0 goto l1_%=; \
l0_%=: \
r0 = 0; \
exit; \
l1_%=: \
r0 -= r1; \
exit; \
" :
: __imm(bpf_ktime_get_ns)
: __clobber_all);
}
SEC("socket")
__description("check deducing bounds from non-const, jmp32, <const> != <non_const>")
__success __retval(0)
__naked void deducing_bounds_from_non_const_30(void)
{
asm volatile (" \
call %[bpf_ktime_get_ns]; \
if w0 < 3 goto l0_%=; \
w2 = 2; \
if w2 != w0 goto l0_%=; \
goto l1_%=; \
l0_%=: \
r0 = 0; \
exit; \
l1_%=: \
r0 -= r1; \
exit; \
" :
: __imm(bpf_ktime_get_ns)
: __clobber_all);
}
char _license[] SEC("license") = "GPL";