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Message-ID: <9b004c45-45f8-4abb-a24e-bb47b369b1a5@roeck-us.net>
Date: Wed, 7 Feb 2024 20:15:43 -0800
From: Guenter Roeck <linux@...ck-us.net>
To: Charlie Jenkins <charlie@...osinc.com>
Cc: David Laight <David.Laight@...lab.com>,
Palmer Dabbelt <palmer@...belt.com>,
Andrew Morton <akpm@...ux-foundation.org>,
linux-kernel@...r.kernel.org, kernel test robot <lkp@...el.com>
Subject: Re: [PATCH v6 0/2] lib: checksum: Fix issues with checksum tests
On Wed, Feb 07, 2024 at 04:22:49PM -0800, Charlie Jenkins wrote:
> The ip_fast_csum and csum_ipv6_magic tests did not have the data
> types properly casted, and improperly misaligned data.
>
> Signed-off-by: Charlie Jenkins <charlie@...osinc.com>
I still get:
Failed unit tests:
mips:malta:checksum
mips64:malta:checksum
mipsel:malta:checksum
mipsel64:malta:checksum
parisc:B160L:checksum
parisc:C3700:checksum
parisc64:C3700:checksum
sh:rts7751r2dplus_defconfig:checksum
on parisc/parisc64:
# test_ip_fast_csum: ASSERTION FAILED at lib/checksum_kunit.c:463
Expected ( u64)csum_result == ( u64)expected, but
( u64)csum_result == 33754 (0x83da)
( u64)expected == 10946 (0x2ac2)
not ok 4 test_ip_fast_csum
ok 5 test_csum_ipv6_magic
# checksum: pass:4 fail:1 skip:0 total:5
# Totals: pass:4 fail:1 skip:0 total:5
mipsel/mipsel64 (little endian):
# test_csum_ipv6_magic: ASSERTION FAILED at lib/checksum_kunit.c:506
Expected ( u64)csum_result == ( u64)expected, but
( u64)csum_result == 18588 (0x489c)
( u64)expected == 12357 (0x3045)
not ok 5 test_csum_ipv6_magic
# checksum: pass:4 fail:1 skip:0 total:5
# Totals: pass:4 fail:1 skip:0 total:5
mips (big endian):
# test_csum_ipv6_magic: ASSERTION FAILED at lib/checksum_kunit.c:506
Expected ( u64)csum_result == ( u64)expected, but
( u64)csum_result == 59728 (0xe950)
( u64)expected == 12357 (0x3045)
not ok 5 test_csum_ipv6_magic
# checksum: pass:4 fail:1 skip:0 total:5
# Totals: pass:4 fail:1 skip:0 total:5
I noticed that csum_result varies across tests for some reason. On parisc/parisc64
the value is unexpected but always the same.
sh (little endian; ok, this isn't entirely fair, this test wasn't enabled before):
KTAP version 1
# Subtest: checksum
# module: checksum_kunit
1..5
# test_csum_fixed_random_inputs: ASSERTION FAILED at lib/checksum_kunit.c:370
Expected ( u64)result == ( u64)expec, but
( u64)result == 53378 (0xd082)
( u64)expec == 33488 (0x82d0)
not ok 1 test_csum_fixed_random_inputs
# test_csum_all_carry_inputs: ASSERTION FAILED at lib/checksum_kunit.c:395
Expected ( u64)result == ( u64)expec, but
( u64)result == 65281 (0xff01)
( u64)expec == 65280 (0xff00)
not ok 2 test_csum_all_carry_inputs
# test_csum_no_carry_inputs: ASSERTION FAILED at lib/checksum_kunit.c:443
Expected ( u64)result == ( u64)expec, but
( u64)result == 65535 (0xffff)
( u64)expec == 65534 (0xfffe)
not ok 3 test_csum_no_carry_inputs
ok 4 test_ip_fast_csum
ok 5 test_csum_ipv6_magic
# checksum: pass:2 fail:3 skip:0 total:5
# Totals: pass:2 fail:3 skip:0 total:5
The result/expected values are always the same in the sh4 tests.
I'd take the test results for sh4 with a grain of salt; there is
at least some possibility that this is an emulation problem.
Guenter
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