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 Thanks, Rajesh Dasari. On Sat, Aug 20, 2022 at 10:00 AM Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > 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