提交 6a28b446 编写于 作者: A Alexei Starovoitov 提交者: Daniel Borkmann

selftests/bpf: adjust test_align expected output

since verifier started to print liveness state of the registers
adjust expected output of test_align.
Now this test checks for both proper alignment handling by verifier
and correctness of liveness marks.
Signed-off-by: NAlexei Starovoitov <ast@kernel.org>
Acked-by: NDaniel Borkmann <daniel@iogearbox.net>
Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>
上级 914cb781
...@@ -64,11 +64,11 @@ static struct bpf_align_test tests[] = { ...@@ -64,11 +64,11 @@ static struct bpf_align_test tests[] = {
.matches = { .matches = {
{1, "R1=ctx(id=0,off=0,imm=0)"}, {1, "R1=ctx(id=0,off=0,imm=0)"},
{1, "R10=fp0"}, {1, "R10=fp0"},
{1, "R3=inv2"}, {1, "R3_w=inv2"},
{2, "R3=inv4"}, {2, "R3_w=inv4"},
{3, "R3=inv8"}, {3, "R3_w=inv8"},
{4, "R3=inv16"}, {4, "R3_w=inv16"},
{5, "R3=inv32"}, {5, "R3_w=inv32"},
}, },
}, },
{ {
...@@ -92,17 +92,17 @@ static struct bpf_align_test tests[] = { ...@@ -92,17 +92,17 @@ static struct bpf_align_test tests[] = {
.matches = { .matches = {
{1, "R1=ctx(id=0,off=0,imm=0)"}, {1, "R1=ctx(id=0,off=0,imm=0)"},
{1, "R10=fp0"}, {1, "R10=fp0"},
{1, "R3=inv1"}, {1, "R3_w=inv1"},
{2, "R3=inv2"}, {2, "R3_w=inv2"},
{3, "R3=inv4"}, {3, "R3_w=inv4"},
{4, "R3=inv8"}, {4, "R3_w=inv8"},
{5, "R3=inv16"}, {5, "R3_w=inv16"},
{6, "R3=inv1"}, {6, "R3_w=inv1"},
{7, "R4=inv32"}, {7, "R4_w=inv32"},
{8, "R4=inv16"}, {8, "R4_w=inv16"},
{9, "R4=inv8"}, {9, "R4_w=inv8"},
{10, "R4=inv4"}, {10, "R4_w=inv4"},
{11, "R4=inv2"}, {11, "R4_w=inv2"},
}, },
}, },
{ {
...@@ -121,12 +121,12 @@ static struct bpf_align_test tests[] = { ...@@ -121,12 +121,12 @@ static struct bpf_align_test tests[] = {
.matches = { .matches = {
{1, "R1=ctx(id=0,off=0,imm=0)"}, {1, "R1=ctx(id=0,off=0,imm=0)"},
{1, "R10=fp0"}, {1, "R10=fp0"},
{1, "R3=inv4"}, {1, "R3_w=inv4"},
{2, "R3=inv8"}, {2, "R3_w=inv8"},
{3, "R3=inv10"}, {3, "R3_w=inv10"},
{4, "R4=inv8"}, {4, "R4_w=inv8"},
{5, "R4=inv12"}, {5, "R4_w=inv12"},
{6, "R4=inv14"}, {6, "R4_w=inv14"},
}, },
}, },
{ {
...@@ -143,10 +143,10 @@ static struct bpf_align_test tests[] = { ...@@ -143,10 +143,10 @@ static struct bpf_align_test tests[] = {
.matches = { .matches = {
{1, "R1=ctx(id=0,off=0,imm=0)"}, {1, "R1=ctx(id=0,off=0,imm=0)"},
{1, "R10=fp0"}, {1, "R10=fp0"},
{1, "R3=inv7"}, {1, "R3_w=inv7"},
{2, "R3=inv7"}, {2, "R3_w=inv7"},
{3, "R3=inv14"}, {3, "R3_w=inv14"},
{4, "R3=inv56"}, {4, "R3_w=inv56"},
}, },
}, },
...@@ -185,18 +185,18 @@ static struct bpf_align_test tests[] = { ...@@ -185,18 +185,18 @@ static struct bpf_align_test tests[] = {
.prog_type = BPF_PROG_TYPE_SCHED_CLS, .prog_type = BPF_PROG_TYPE_SCHED_CLS,
.matches = { .matches = {
{7, "R0=pkt(id=0,off=8,r=8,imm=0)"}, {7, "R0=pkt(id=0,off=8,r=8,imm=0)"},
{7, "R3=inv(id=0,umax_value=255,var_off=(0x0; 0xff))"}, {7, "R3_w=inv(id=0,umax_value=255,var_off=(0x0; 0xff))"},
{8, "R3=inv(id=0,umax_value=510,var_off=(0x0; 0x1fe))"}, {8, "R3_w=inv(id=0,umax_value=510,var_off=(0x0; 0x1fe))"},
{9, "R3=inv(id=0,umax_value=1020,var_off=(0x0; 0x3fc))"}, {9, "R3_w=inv(id=0,umax_value=1020,var_off=(0x0; 0x3fc))"},
{10, "R3=inv(id=0,umax_value=2040,var_off=(0x0; 0x7f8))"}, {10, "R3_w=inv(id=0,umax_value=2040,var_off=(0x0; 0x7f8))"},
{11, "R3=inv(id=0,umax_value=4080,var_off=(0x0; 0xff0))"}, {11, "R3_w=inv(id=0,umax_value=4080,var_off=(0x0; 0xff0))"},
{18, "R3=pkt_end(id=0,off=0,imm=0)"}, {18, "R3=pkt_end(id=0,off=0,imm=0)"},
{18, "R4=inv(id=0,umax_value=255,var_off=(0x0; 0xff))"}, {18, "R4_w=inv(id=0,umax_value=255,var_off=(0x0; 0xff))"},
{19, "R4=inv(id=0,umax_value=8160,var_off=(0x0; 0x1fe0))"}, {19, "R4_w=inv(id=0,umax_value=8160,var_off=(0x0; 0x1fe0))"},
{20, "R4=inv(id=0,umax_value=4080,var_off=(0x0; 0xff0))"}, {20, "R4_w=inv(id=0,umax_value=4080,var_off=(0x0; 0xff0))"},
{21, "R4=inv(id=0,umax_value=2040,var_off=(0x0; 0x7f8))"}, {21, "R4_w=inv(id=0,umax_value=2040,var_off=(0x0; 0x7f8))"},
{22, "R4=inv(id=0,umax_value=1020,var_off=(0x0; 0x3fc))"}, {22, "R4_w=inv(id=0,umax_value=1020,var_off=(0x0; 0x3fc))"},
{23, "R4=inv(id=0,umax_value=510,var_off=(0x0; 0x1fe))"}, {23, "R4_w=inv(id=0,umax_value=510,var_off=(0x0; 0x1fe))"},
}, },
}, },
{ {
...@@ -217,16 +217,16 @@ static struct bpf_align_test tests[] = { ...@@ -217,16 +217,16 @@ static struct bpf_align_test tests[] = {
}, },
.prog_type = BPF_PROG_TYPE_SCHED_CLS, .prog_type = BPF_PROG_TYPE_SCHED_CLS,
.matches = { .matches = {
{7, "R3=inv(id=0,umax_value=255,var_off=(0x0; 0xff))"}, {7, "R3_w=inv(id=0,umax_value=255,var_off=(0x0; 0xff))"},
{8, "R4=inv(id=0,umax_value=255,var_off=(0x0; 0xff))"}, {8, "R4_w=inv(id=0,umax_value=255,var_off=(0x0; 0xff))"},
{9, "R4=inv(id=0,umax_value=255,var_off=(0x0; 0xff))"}, {9, "R4_w=inv(id=0,umax_value=255,var_off=(0x0; 0xff))"},
{10, "R4=inv(id=0,umax_value=255,var_off=(0x0; 0xff))"}, {10, "R4_w=inv(id=0,umax_value=255,var_off=(0x0; 0xff))"},
{11, "R4=inv(id=0,umax_value=510,var_off=(0x0; 0x1fe))"}, {11, "R4_w=inv(id=0,umax_value=510,var_off=(0x0; 0x1fe))"},
{12, "R4=inv(id=0,umax_value=255,var_off=(0x0; 0xff))"}, {12, "R4_w=inv(id=0,umax_value=255,var_off=(0x0; 0xff))"},
{13, "R4=inv(id=0,umax_value=1020,var_off=(0x0; 0x3fc))"}, {13, "R4_w=inv(id=0,umax_value=1020,var_off=(0x0; 0x3fc))"},
{14, "R4=inv(id=0,umax_value=255,var_off=(0x0; 0xff))"}, {14, "R4_w=inv(id=0,umax_value=255,var_off=(0x0; 0xff))"},
{15, "R4=inv(id=0,umax_value=2040,var_off=(0x0; 0x7f8))"}, {15, "R4_w=inv(id=0,umax_value=2040,var_off=(0x0; 0x7f8))"},
{16, "R4=inv(id=0,umax_value=4080,var_off=(0x0; 0xff0))"}, {16, "R4_w=inv(id=0,umax_value=4080,var_off=(0x0; 0xff0))"},
}, },
}, },
{ {
...@@ -257,14 +257,14 @@ static struct bpf_align_test tests[] = { ...@@ -257,14 +257,14 @@ static struct bpf_align_test tests[] = {
}, },
.prog_type = BPF_PROG_TYPE_SCHED_CLS, .prog_type = BPF_PROG_TYPE_SCHED_CLS,
.matches = { .matches = {
{4, "R5=pkt(id=0,off=0,r=0,imm=0)"}, {4, "R5_w=pkt(id=0,off=0,r=0,imm=0)"},
{5, "R5=pkt(id=0,off=14,r=0,imm=0)"}, {5, "R5_w=pkt(id=0,off=14,r=0,imm=0)"},
{6, "R4=pkt(id=0,off=14,r=0,imm=0)"}, {6, "R4_w=pkt(id=0,off=14,r=0,imm=0)"},
{10, "R2=pkt(id=0,off=0,r=18,imm=0)"}, {10, "R2=pkt(id=0,off=0,r=18,imm=0)"},
{10, "R5=pkt(id=0,off=14,r=18,imm=0)"}, {10, "R5=pkt(id=0,off=14,r=18,imm=0)"},
{10, "R4=inv(id=0,umax_value=255,var_off=(0x0; 0xff))"}, {10, "R4_w=inv(id=0,umax_value=255,var_off=(0x0; 0xff))"},
{14, "R4=inv(id=0,umax_value=65535,var_off=(0x0; 0xffff))"}, {14, "R4_w=inv(id=0,umax_value=65535,var_off=(0x0; 0xffff))"},
{15, "R4=inv(id=0,umax_value=65535,var_off=(0x0; 0xffff))"}, {15, "R4_w=inv(id=0,umax_value=65535,var_off=(0x0; 0xffff))"},
}, },
}, },
{ {
...@@ -320,11 +320,11 @@ static struct bpf_align_test tests[] = { ...@@ -320,11 +320,11 @@ static struct bpf_align_test tests[] = {
* alignment of 4. * alignment of 4.
*/ */
{8, "R2=pkt(id=0,off=0,r=8,imm=0)"}, {8, "R2=pkt(id=0,off=0,r=8,imm=0)"},
{8, "R6=inv(id=0,umax_value=1020,var_off=(0x0; 0x3fc))"}, {8, "R6_w=inv(id=0,umax_value=1020,var_off=(0x0; 0x3fc))"},
/* Offset is added to packet pointer R5, resulting in /* Offset is added to packet pointer R5, resulting in
* known fixed offset, and variable offset from R6. * known fixed offset, and variable offset from R6.
*/ */
{11, "R5=pkt(id=1,off=14,r=0,umax_value=1020,var_off=(0x0; 0x3fc))"}, {11, "R5_w=pkt(id=1,off=14,r=0,umax_value=1020,var_off=(0x0; 0x3fc))"},
/* At the time the word size load is performed from R5, /* At the time the word size load is performed from R5,
* it's total offset is NET_IP_ALIGN + reg->off (0) + * it's total offset is NET_IP_ALIGN + reg->off (0) +
* reg->aux_off (14) which is 16. Then the variable * reg->aux_off (14) which is 16. Then the variable
...@@ -336,11 +336,11 @@ static struct bpf_align_test tests[] = { ...@@ -336,11 +336,11 @@ static struct bpf_align_test tests[] = {
/* Variable offset is added to R5 packet pointer, /* Variable offset is added to R5 packet pointer,
* resulting in auxiliary alignment of 4. * resulting in auxiliary alignment of 4.
*/ */
{18, "R5=pkt(id=2,off=0,r=0,umax_value=1020,var_off=(0x0; 0x3fc))"}, {18, "R5_w=pkt(id=2,off=0,r=0,umax_value=1020,var_off=(0x0; 0x3fc))"},
/* Constant offset is added to R5, resulting in /* Constant offset is added to R5, resulting in
* reg->off of 14. * reg->off of 14.
*/ */
{19, "R5=pkt(id=2,off=14,r=0,umax_value=1020,var_off=(0x0; 0x3fc))"}, {19, "R5_w=pkt(id=2,off=14,r=0,umax_value=1020,var_off=(0x0; 0x3fc))"},
/* At the time the word size load is performed from R5, /* At the time the word size load is performed from R5,
* its total fixed offset is NET_IP_ALIGN + reg->off * its total fixed offset is NET_IP_ALIGN + reg->off
* (14) which is 16. Then the variable offset is 4-byte * (14) which is 16. Then the variable offset is 4-byte
...@@ -352,18 +352,18 @@ static struct bpf_align_test tests[] = { ...@@ -352,18 +352,18 @@ static struct bpf_align_test tests[] = {
/* Constant offset is added to R5 packet pointer, /* Constant offset is added to R5 packet pointer,
* resulting in reg->off value of 14. * resulting in reg->off value of 14.
*/ */
{26, "R5=pkt(id=0,off=14,r=8"}, {26, "R5_w=pkt(id=0,off=14,r=8"},
/* Variable offset is added to R5, resulting in a /* Variable offset is added to R5, resulting in a
* variable offset of (4n). * variable offset of (4n).
*/ */
{27, "R5=pkt(id=3,off=14,r=0,umax_value=1020,var_off=(0x0; 0x3fc))"}, {27, "R5_w=pkt(id=3,off=14,r=0,umax_value=1020,var_off=(0x0; 0x3fc))"},
/* Constant is added to R5 again, setting reg->off to 18. */ /* Constant is added to R5 again, setting reg->off to 18. */
{28, "R5=pkt(id=3,off=18,r=0,umax_value=1020,var_off=(0x0; 0x3fc))"}, {28, "R5_w=pkt(id=3,off=18,r=0,umax_value=1020,var_off=(0x0; 0x3fc))"},
/* And once more we add a variable; resulting var_off /* And once more we add a variable; resulting var_off
* is still (4n), fixed offset is not changed. * is still (4n), fixed offset is not changed.
* Also, we create a new reg->id. * Also, we create a new reg->id.
*/ */
{29, "R5=pkt(id=4,off=18,r=0,umax_value=2040,var_off=(0x0; 0x7fc))"}, {29, "R5_w=pkt(id=4,off=18,r=0,umax_value=2040,var_off=(0x0; 0x7fc))"},
/* At the time the word size load is performed from R5, /* At the time the word size load is performed from R5,
* its total fixed offset is NET_IP_ALIGN + reg->off (18) * its total fixed offset is NET_IP_ALIGN + reg->off (18)
* which is 20. Then the variable offset is (4n), so * which is 20. Then the variable offset is (4n), so
...@@ -410,11 +410,11 @@ static struct bpf_align_test tests[] = { ...@@ -410,11 +410,11 @@ static struct bpf_align_test tests[] = {
* alignment of 4. * alignment of 4.
*/ */
{8, "R2=pkt(id=0,off=0,r=8,imm=0)"}, {8, "R2=pkt(id=0,off=0,r=8,imm=0)"},
{8, "R6=inv(id=0,umax_value=1020,var_off=(0x0; 0x3fc))"}, {8, "R6_w=inv(id=0,umax_value=1020,var_off=(0x0; 0x3fc))"},
/* Adding 14 makes R6 be (4n+2) */ /* Adding 14 makes R6 be (4n+2) */
{9, "R6=inv(id=0,umin_value=14,umax_value=1034,var_off=(0x2; 0x7fc))"}, {9, "R6_w=inv(id=0,umin_value=14,umax_value=1034,var_off=(0x2; 0x7fc))"},
/* Packet pointer has (4n+2) offset */ /* Packet pointer has (4n+2) offset */
{11, "R5=pkt(id=1,off=0,r=0,umin_value=14,umax_value=1034,var_off=(0x2; 0x7fc))"}, {11, "R5_w=pkt(id=1,off=0,r=0,umin_value=14,umax_value=1034,var_off=(0x2; 0x7fc))"},
{13, "R4=pkt(id=1,off=4,r=0,umin_value=14,umax_value=1034,var_off=(0x2; 0x7fc))"}, {13, "R4=pkt(id=1,off=4,r=0,umin_value=14,umax_value=1034,var_off=(0x2; 0x7fc))"},
/* At the time the word size load is performed from R5, /* At the time the word size load is performed from R5,
* its total fixed offset is NET_IP_ALIGN + reg->off (0) * its total fixed offset is NET_IP_ALIGN + reg->off (0)
...@@ -426,11 +426,11 @@ static struct bpf_align_test tests[] = { ...@@ -426,11 +426,11 @@ static struct bpf_align_test tests[] = {
/* Newly read value in R6 was shifted left by 2, so has /* Newly read value in R6 was shifted left by 2, so has
* known alignment of 4. * known alignment of 4.
*/ */
{18, "R6=inv(id=0,umax_value=1020,var_off=(0x0; 0x3fc))"}, {18, "R6_w=inv(id=0,umax_value=1020,var_off=(0x0; 0x3fc))"},
/* Added (4n) to packet pointer's (4n+2) var_off, giving /* Added (4n) to packet pointer's (4n+2) var_off, giving
* another (4n+2). * another (4n+2).
*/ */
{19, "R5=pkt(id=2,off=0,r=0,umin_value=14,umax_value=2054,var_off=(0x2; 0xffc))"}, {19, "R5_w=pkt(id=2,off=0,r=0,umin_value=14,umax_value=2054,var_off=(0x2; 0xffc))"},
{21, "R4=pkt(id=2,off=4,r=0,umin_value=14,umax_value=2054,var_off=(0x2; 0xffc))"}, {21, "R4=pkt(id=2,off=4,r=0,umin_value=14,umax_value=2054,var_off=(0x2; 0xffc))"},
/* At the time the word size load is performed from R5, /* At the time the word size load is performed from R5,
* its total fixed offset is NET_IP_ALIGN + reg->off (0) * its total fixed offset is NET_IP_ALIGN + reg->off (0)
...@@ -473,11 +473,11 @@ static struct bpf_align_test tests[] = { ...@@ -473,11 +473,11 @@ static struct bpf_align_test tests[] = {
.prog_type = BPF_PROG_TYPE_SCHED_CLS, .prog_type = BPF_PROG_TYPE_SCHED_CLS,
.result = REJECT, .result = REJECT,
.matches = { .matches = {
{4, "R5=pkt(id=0,off=0,r=0,imm=0)"}, {4, "R5_w=pkt(id=0,off=0,r=0,imm=0)"},
/* ptr & 0x40 == either 0 or 0x40 */ /* ptr & 0x40 == either 0 or 0x40 */
{5, "R5=inv(id=0,umax_value=64,var_off=(0x0; 0x40))"}, {5, "R5_w=inv(id=0,umax_value=64,var_off=(0x0; 0x40))"},
/* ptr << 2 == unknown, (4n) */ /* ptr << 2 == unknown, (4n) */
{7, "R5=inv(id=0,smax_value=9223372036854775804,umax_value=18446744073709551612,var_off=(0x0; 0xfffffffffffffffc))"}, {7, "R5_w=inv(id=0,smax_value=9223372036854775804,umax_value=18446744073709551612,var_off=(0x0; 0xfffffffffffffffc))"},
/* (4n) + 14 == (4n+2). We blow our bounds, because /* (4n) + 14 == (4n+2). We blow our bounds, because
* the add could overflow. * the add could overflow.
*/ */
...@@ -485,7 +485,7 @@ static struct bpf_align_test tests[] = { ...@@ -485,7 +485,7 @@ static struct bpf_align_test tests[] = {
/* Checked s>=0 */ /* Checked s>=0 */
{10, "R5=inv(id=0,umin_value=2,umax_value=9223372036854775806,var_off=(0x2; 0x7ffffffffffffffc))"}, {10, "R5=inv(id=0,umin_value=2,umax_value=9223372036854775806,var_off=(0x2; 0x7ffffffffffffffc))"},
/* packet pointer + nonnegative (4n+2) */ /* packet pointer + nonnegative (4n+2) */
{12, "R6=pkt(id=1,off=0,r=0,umin_value=2,umax_value=9223372036854775806,var_off=(0x2; 0x7ffffffffffffffc))"}, {12, "R6_w=pkt(id=1,off=0,r=0,umin_value=2,umax_value=9223372036854775806,var_off=(0x2; 0x7ffffffffffffffc))"},
{14, "R4=pkt(id=1,off=4,r=0,umin_value=2,umax_value=9223372036854775806,var_off=(0x2; 0x7ffffffffffffffc))"}, {14, "R4=pkt(id=1,off=4,r=0,umin_value=2,umax_value=9223372036854775806,var_off=(0x2; 0x7ffffffffffffffc))"},
/* NET_IP_ALIGN + (4n+2) == (4n), alignment is fine. /* NET_IP_ALIGN + (4n+2) == (4n), alignment is fine.
* We checked the bounds, but it might have been able * We checked the bounds, but it might have been able
...@@ -530,11 +530,11 @@ static struct bpf_align_test tests[] = { ...@@ -530,11 +530,11 @@ static struct bpf_align_test tests[] = {
* alignment of 4. * alignment of 4.
*/ */
{7, "R2=pkt(id=0,off=0,r=8,imm=0)"}, {7, "R2=pkt(id=0,off=0,r=8,imm=0)"},
{9, "R6=inv(id=0,umax_value=1020,var_off=(0x0; 0x3fc))"}, {9, "R6_w=inv(id=0,umax_value=1020,var_off=(0x0; 0x3fc))"},
/* Adding 14 makes R6 be (4n+2) */ /* Adding 14 makes R6 be (4n+2) */
{10, "R6=inv(id=0,umin_value=14,umax_value=1034,var_off=(0x2; 0x7fc))"}, {10, "R6_w=inv(id=0,umin_value=14,umax_value=1034,var_off=(0x2; 0x7fc))"},
/* New unknown value in R7 is (4n) */ /* New unknown value in R7 is (4n) */
{11, "R7=inv(id=0,umax_value=1020,var_off=(0x0; 0x3fc))"}, {11, "R7_w=inv(id=0,umax_value=1020,var_off=(0x0; 0x3fc))"},
/* Subtracting it from R6 blows our unsigned bounds */ /* Subtracting it from R6 blows our unsigned bounds */
{12, "R6=inv(id=0,smin_value=-1006,smax_value=1034,var_off=(0x2; 0xfffffffffffffffc))"}, {12, "R6=inv(id=0,smin_value=-1006,smax_value=1034,var_off=(0x2; 0xfffffffffffffffc))"},
/* Checked s>= 0 */ /* Checked s>= 0 */
...@@ -583,15 +583,15 @@ static struct bpf_align_test tests[] = { ...@@ -583,15 +583,15 @@ static struct bpf_align_test tests[] = {
* alignment of 4. * alignment of 4.
*/ */
{7, "R2=pkt(id=0,off=0,r=8,imm=0)"}, {7, "R2=pkt(id=0,off=0,r=8,imm=0)"},
{10, "R6=inv(id=0,umax_value=60,var_off=(0x0; 0x3c))"}, {10, "R6_w=inv(id=0,umax_value=60,var_off=(0x0; 0x3c))"},
/* Adding 14 makes R6 be (4n+2) */ /* Adding 14 makes R6 be (4n+2) */
{11, "R6=inv(id=0,umin_value=14,umax_value=74,var_off=(0x2; 0x7c))"}, {11, "R6_w=inv(id=0,umin_value=14,umax_value=74,var_off=(0x2; 0x7c))"},
/* Subtracting from packet pointer overflows ubounds */ /* Subtracting from packet pointer overflows ubounds */
{13, "R5=pkt(id=1,off=0,r=8,umin_value=18446744073709551542,umax_value=18446744073709551602,var_off=(0xffffffffffffff82; 0x7c))"}, {13, "R5_w=pkt(id=1,off=0,r=8,umin_value=18446744073709551542,umax_value=18446744073709551602,var_off=(0xffffffffffffff82; 0x7c))"},
/* New unknown value in R7 is (4n), >= 76 */ /* New unknown value in R7 is (4n), >= 76 */
{15, "R7=inv(id=0,umin_value=76,umax_value=1096,var_off=(0x0; 0x7fc))"}, {15, "R7_w=inv(id=0,umin_value=76,umax_value=1096,var_off=(0x0; 0x7fc))"},
/* Adding it to packet pointer gives nice bounds again */ /* Adding it to packet pointer gives nice bounds again */
{16, "R5=pkt(id=2,off=0,r=0,umin_value=2,umax_value=1082,var_off=(0x2; 0x7fc))"}, {16, "R5_w=pkt(id=2,off=0,r=0,umin_value=2,umax_value=1082,var_off=(0x2; 0x7fc))"},
/* At the time the word size load is performed from R5, /* At the time the word size load is performed from R5,
* its total fixed offset is NET_IP_ALIGN + reg->off (0) * its total fixed offset is NET_IP_ALIGN + reg->off (0)
* which is 2. Then the variable offset is (4n+2), so * which is 2. Then the variable offset is (4n+2), so
......
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