linux-kernel - bpf selftest failed in 5.4.210 kernel

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Message-ID: <CAPXMrf-C5XEUfOJd3GCtgtHOkc8DxDGbLxE5=GFmr+Py0zKxJA@mail.gmail.com>
Date:   Wed, 17 Aug 2022 21:22:00 +0300
From:   RAJESH DASARI <raajeshdasari@...il.com>
To:     stable@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, jean-philippe@...aro.org,
        df@...gle.com
Subject: bpf selftest failed in 5.4.210 kernel

Hi ,

We are running bpf selftests on 5.4.210 kernel version and we see that
test case 11 of  test_align failed. Please find the below error.

selftests: bpf: test_align
Test  11: pointer variable subtraction ... Failed to find match 16:
R5_w=pkt(id=2,off=0,r=0,umin_value=2,umax_value=1082,var_off=(0x2;
0xfffffffc)
# func#0 @0
# 0: R1=ctx(id=0,off=0,imm=0) R10=fp0
# 0: (61) r2 = *(u32 *)(r1 +76)
# 1: R1=ctx(id=0,off=0,imm=0) R2_w=pkt(id=0,off=0,r=0,imm=0) R10=fp0
# 1: (61) r3 = *(u32 *)(r1 +80)

For complete errors please see the attached file. The same test case
execution was successful in the 5.4.209 version , could you please let
me know any known issue with the recent changes in 5.4.210 and how to
fix these errors.

Thanks,
Rajesh Dasari.

Download attachment "test_align_bpf_error" of type "application/octet-stream" (7435 bytes)