Re: bpf selftest failed in 5.4.210 kernel

[Greg KH]

On Fri, Aug 19, 2022 at 07:20:11PM +0300, RAJESH DASARI wrote:
> Hi ,
> 
> I did some more tests ,  Please find the observation below.
> 
> step 1:  On v5.4.210 kernel , I reverted  only commit  bpf: Verifer,
> adjust_scalar_min_max_vals to always call update_reg_bounds()
> 7c1134c7da997523e2834dd516e2ddc51920699a , compiled the kernel and
> booted the system with the new kernel.
> step 2:  On system with newly compiled kernel , I clone the  v54.4.210
> source code  and  reverted  commit  selftests/bpf: Fix test_align
> verifier log patterns  and selftests/bpf: Fix "dubious pointer
> arithmetic" test , then ran the selftests, test_align test cases
> execution was successful.
> step 3: If i revert only selftests/bpf: Fix "dubious pointer
> arithmetic" test , test cases are still failing.
> 
> 
> 
> Please find the attached PDF for the other scenarios which I have executed.

For obvious reasons, we can't read random .pdf files sent to us.  Please
put it all in text.

thanks,

greg k-h