Re: bpf selftest failed in 5.4.210 kernel

From: Greg KH
Date: Tue Aug 23 2022 - 03:04:18 EST


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