Revert "selftests/bpf: Fix test_align verifier log patterns"
This partially reverts commit 6a9b3f0f3b
.
The upstream commit addresses multiple verifier changes, only one of
which was backported to v5.4. Therefore only keep the relevant changes
and revert the others.
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -475,10 +475,10 @@ static struct bpf_align_test tests[] = {
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*/
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{7, "R5_w=inv(id=0,smin_value=-9223372036854775806,smax_value=9223372036854775806,umin_value=2,umax_value=18446744073709551614,var_off=(0x2; 0xfffffffffffffffc)"},
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/* Checked s>=0 */
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{9, "R5=inv(id=0,umin_value=2,umax_value=9223372034707292158,var_off=(0x2; 0x7fffffff7ffffffc)"},
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{9, "R5=inv(id=0,umin_value=2,umax_value=9223372036854775806,var_off=(0x2; 0x7ffffffffffffffc))"},
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/* packet pointer + nonnegative (4n+2) */
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{11, "R6_w=pkt(id=1,off=0,r=0,umin_value=2,umax_value=9223372034707292158,var_off=(0x2; 0x7fffffff7ffffffc)"},
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{13, "R4_w=pkt(id=1,off=4,r=0,umin_value=2,umax_value=9223372034707292158,var_off=(0x2; 0x7fffffff7ffffffc)"},
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{11, "R6_w=pkt(id=1,off=0,r=0,umin_value=2,umax_value=9223372036854775806,var_off=(0x2; 0x7ffffffffffffffc))"},
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{13, "R4_w=pkt(id=1,off=4,r=0,umin_value=2,umax_value=9223372036854775806,var_off=(0x2; 0x7ffffffffffffffc))"},
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/* NET_IP_ALIGN + (4n+2) == (4n), alignment is fine.
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* We checked the bounds, but it might have been able
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* to overflow if the packet pointer started in the
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@ -486,7 +486,7 @@ static struct bpf_align_test tests[] = {
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* So we did not get a 'range' on R6, and the access
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* attempt will fail.
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*/
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{15, "R6_w=pkt(id=1,off=0,r=0,umin_value=2,umax_value=9223372034707292158,var_off=(0x2; 0x7fffffff7ffffffc)"},
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{15, "R6_w=pkt(id=1,off=0,r=0,umin_value=2,umax_value=9223372036854775806,var_off=(0x2; 0x7ffffffffffffffc))"},
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}
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},
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{
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@ -580,18 +580,18 @@ static struct bpf_align_test tests[] = {
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/* Adding 14 makes R6 be (4n+2) */
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{11, "R6_w=inv(id=0,umin_value=14,umax_value=74,var_off=(0x2; 0x7c))"},
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/* Subtracting from packet pointer overflows ubounds */
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{13, "R5_w=pkt(id=1,off=0,r=8,umin_value=18446744073709551542,umax_value=18446744073709551602,var_off=(0xffffffffffffff82; 0x7c)"},
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{13, "R5_w=pkt(id=1,off=0,r=8,umin_value=18446744073709551542,umax_value=18446744073709551602,var_off=(0xffffffffffffff82; 0x7c))"},
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/* New unknown value in R7 is (4n), >= 76 */
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{15, "R7_w=inv(id=0,umin_value=76,umax_value=1096,var_off=(0x0; 0x7fc))"},
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/* Adding it to packet pointer gives nice bounds again */
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{16, "R5_w=pkt(id=2,off=0,r=0,umin_value=2,umax_value=1082,var_off=(0x2; 0xfffffffc)"},
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{16, "R5_w=pkt(id=2,off=0,r=0,umin_value=2,umax_value=1082,var_off=(0x2; 0x7fc))"},
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/* At the time the word size load is performed from R5,
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* its total fixed offset is NET_IP_ALIGN + reg->off (0)
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* which is 2. Then the variable offset is (4n+2), so
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* the total offset is 4-byte aligned and meets the
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* load's requirements.
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*/
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{20, "R5=pkt(id=2,off=0,r=4,umin_value=2,umax_value=1082,var_off=(0x2; 0xfffffffc)"},
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{20, "R5=pkt(id=2,off=0,r=4,umin_value=2,umax_value=1082,var_off=(0x2; 0x7fc))"},
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},
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},
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};
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