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[bpf-next,v2,0/2] bpf: Fix a umin > umax reg bound error

Message ID 20230314203424.4015351-1-xukuohai@huaweicloud.com
Headers show
Series bpf: Fix a umin > umax reg bound error | expand

Message

Xu Kuohai March 14, 2023, 8:34 p.m. UTC 
From: Xu Kuohai <xukuohai@huawei.com>

This patchset fixes a umin > umax reg bound error and adds cases for it.

v2:
1. add bound check to avoid min > max 
2. update 32-bit reg min/max when 64-bit reg value is a constant
3. add Fixes tag

v1: https://lore.kernel.org/bpf/20230307220449.2933650-1-xukuohai@huaweicloud.com/

Xu Kuohai (2):
  bpf: Fix a umin > umax reg bound error
  selftests/bpf: check bounds not in the 32-bit range

 kernel/bpf/verifier.c                         | 143 ++++++++++++------
 tools/testing/selftests/bpf/verifier/bounds.c | 121 +++++++++++++++
 2 files changed, 214 insertions(+), 50 deletions(-)