From: Ovidiu Panait ovidiu.panait@windriver.com
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 ovidiu.panait@windriver.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- tools/testing/selftests/bpf/test_verifier.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- 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(), },