From: Ovidiu Panait
stable inclusion
from linux-4.19.193
commit c905bfe767e98a13dd886bf241ba9ee0640a53ff
category: bugfix
issue: #I42H19
CVE: NA
--------------------------------
Backport the missing selftest part of commit 7da6cd690c43 ("bpf: improve
verifier branch analysis") in order to fix the following test_verifier
failures:
...
Unexpected success to load!
0: (b7) r0 = 0
1: (75) if r0 s>= 0x0 goto pc+1
3: (95) exit
processed 3 insns (limit 131072), stack depth 0
Unexpected success to load!
0: (b7) r0 = 0
1: (75) if r0 s>= 0x0 goto pc+1
3: (95) exit
processed 3 insns (limit 131072), stack depth 0
...
The changesets apply with a minor context difference.
Fixes: 7da6cd690c43 ("bpf: improve verifier branch analysis")
Signed-off-by: Ovidiu Panait
Signed-off-by: Greg Kroah-Hartman
Signed-off-by: Yang Yingliang
Signed-off-by: Yu Changchun
---
tools/testing/selftests/bpf/test_verifier.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/bpf/test_verifier.c b/tools/testing/selftests/bpf/test_verifier.c
index fdc093f29..a34552aad 100644
--- a/tools/testing/selftests/bpf/test_verifier.c
+++ b/tools/testing/selftests/bpf/test_verifier.c
@@ -7867,7 +7867,7 @@ static struct bpf_test tests[] = {
BPF_JMP_IMM(BPF_JA, 0, 0, -7),
},
.fixup_map1 = { 4 },
- .errstr = "R0 invalid mem access 'inv'",
+ .errstr = "unbounded min value",
.errstr_unpriv = "R1 has unknown scalar with mixed signed bounds",
.result = REJECT,
},
@@ -9850,7 +9850,7 @@ static struct bpf_test tests[] = {
"check deducing bounds from const, 5",
.insns = {
BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_JMP_IMM(BPF_JSGE, BPF_REG_0, 0, 1),
+ BPF_JMP_IMM(BPF_JSGE, BPF_REG_0, 1, 1),
BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
BPF_EXIT_INSN(),
},
--
2.22.0
