linux-kernel - Re: bpf selftest failed in 5.4.210 kernel

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Message-ID: <YwR76AVTOsdXNpxh@kroah.com>
Date:   Tue, 23 Aug 2022 09:04:08 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     RAJESH DASARI <raajeshdasari@...il.com>
Cc:     Jean-Philippe Brucker <jean-philippe@...aro.org>,
        stable@...r.kernel.org, linux-kernel@...r.kernel.org, df@...gle.com
Subject: Re: bpf selftest failed in 5.4.210 kernel

On Mon, Aug 22, 2022 at 10:23:02PM +0300, RAJESH DASARI wrote:
> Hi,
> 
> Please find the test scenarios which I have tried.
> 
> Test 1:
> 
> Running system Kernel version (tag/commit) :  v5.4.210
> Kernel source code checkout : v5.4.210
> test_align test case execution status : Failure
> 
> Test 2:
> 
> Running system Kernel version (tag/commit) : v5.4.210
> Kernel source code checkout : v5.4.209
> test_align test case execution status : Failure
> 
> Test 3:
> 
> Running system Kernel version (tag/commit) : v5.4.209
> Kernel source code checkout : v5.4.209
> test_align test case execution status : Success
> 
> Test 4:
> 
> Running system Kernel version (tag/commit) : ACPI: APEI: Better fix to
> avoid spamming the console with old error logs ( Kernel compiled at
> this commit  and system is booted with this change)
> Kernel source code checkout : v5.4.210 but reverted selftests/bpf: Fix
> test_align verifier log patterns and selftests/bpf: Fix "dubious
> pointer arithmetic" test. If I revert only the Fix "dubious pointer
> arithmetic" test, the testcase still fails.
> test_align test case execution status : Success
> 
> Test 5:
> 
> Running system Kernel version (tag/commit) :  v5.4.210 but reverted
> commit (bpf: Verifer, adjust_scalar_min_max_vals to always call
> update_reg_bounds() )
> Kernel source code checkout : v5.4.210 but reverted selftests/bpf: Fix
> test_align verifier log patterns and selftests/bpf: Fix "dubious
> pointer arithmetic" test.
> test_align test case execution status : Success
> 
> Test 6 :
> 
> Running system Kernel version (tag/commit) : bpf: Test_verifier, #70
> error message updates for 32-bit right shift( Kernel compiled at this
> commit  and system is booted with this change)
> Kernel source code checkout : v5.4.209 or v5.4.210
> test_align test case execution status : Failure

I'm sorry, but I don't know what to do with this report at all.

Is there some failure somewhere?  If you use 'git bisect' do you find
the offending commit?

confused,

greg k-h