linux-kernel - Re: Linux 6.8-rc3

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Date: Sun, 4 Feb 2024 10:08:12 -0800
From: Guenter Roeck <linux@...ck-us.net>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Linux 6.8-rc3

On Sun, Feb 04, 2024 at 12:39:17PM +0000, Linus Torvalds wrote:
> Hmm. A slightly larger rc3 that I'd have hoped for, although at this
> stage in the release process it's not something that really worries me
> yet.
> 
> Aside from the usual driver fixes (with sound, gpu and nvme standing
> out), we've got mainly filesystem fixes (tracefs and ext4) and a big
> chunk of tooling updates (perf and selftests).
> 
> The rest is mostly a random collection of fixes all over. Fairly quiet
> on the arch side, with mainly just some parisc fixes.
> 

Build results:
	total: 155 pass: 155 fail: 0
Qemu test results:
	total: 549 pass: 548 fail: 1
Unit test results:
	pass: 127073 fail: 891
	(some of those are duplicates, still working on the script)

an385:mps2_defconfig:mps2-an385:initrd still crashes due to the problems
with the test_ip_fast_csum unit test. A fix is pending, but it does not
address the unit test failures reported below.

Notable warning backtraces:

- BUG: sleeping function called from invalid context at drivers/gpio/gpiolib.c:3749

  As mentioned last week, due to mmc code calling gpiod_get_value_cansleep()
  with interrupts disabled.

Unit test failures:

- test_ip_fast_csum and test_csum_ipv6_magic fail on big endian machines.

  # test_ip_fast_csum: ASSERTION FAILED at lib/checksum_kunit.c:589
  Expected ( u64)expected == ( u64)csum_result, but
        ( u64)expected == 55939 (0xda83)
        ( u64)csum_result == 33754 (0x83da)
  not ok 4 test_ip_fast_csum
  # test_csum_ipv6_magic: ASSERTION FAILED at lib/checksum_kunit.c:617
  Expected ( u64)expected_csum_ipv6_magic[i] == ( u64)csum_ipv6_magic(saddr, daddr, len, proto, csum), but
        ( u64)expected_csum_ipv6_magic[i] == 6356 (0x18d4)
        ( u64)csum_ipv6_magic(saddr, daddr, len, proto, csum) == 43586 (0xaa42)
  not ok 5 test_csum_ipv6_magic

  Reported to maintainer.

- Handshake API tests fails with

  # req_destroy works: EXPECTATION FAILED at net/handshake/handshake-test.c:477
  Expected handshake_req_destroy_test == req, but
      handshake_req_destroy_test == 00000000
      req == c4aef640
  not ok 11 req_destroy works

  This is not a new problem, likely seen since the test was introduced.
  Reported to maintainer.

- regmap unit tests fail randomly in raw_noinc_write with errors such as

  # raw_noinc_write: ASSERTION FAILED at drivers/base/regmap/regmap-kunit.c:1243
  Expected val_test == val, but
      val_test == 65581 (0x1002d)
      val == 45 (0x2d)
      not ok 8 maple-big
  # raw_noinc_write: pass:7 fail:1 skip:0 total:8

  or

  # raw_noinc_write: ASSERTION FAILED at drivers/base/regmap/regmap-kunit.c:1243
  Expected val_test == val, but
      val_test == 65556 (0x10014)
      val == 20 (0x14)
      not ok 5 rbtree-little
      ok 6 rbtree-big
      ok 7 maple-little
      ok 8 maple-big
  # raw_noinc_write: pass:7 fail:1 skip:0 total:8

  This is a spurious problem, seen on both little and big endian machines.
  Newly discovered, not yet reported. Likely not a new problem.

- cpumask unit tests on parisc/parisc64 fail with

      KTAP version 1
      # Subtest: cpumask
      # module: cpumask_kunit
      1..6
      # test_cpumask_weight: EXPECTATION FAILED at lib/cpumask_kunit.c:68
      Expected nr_cpu_ids == cpumask_weight(((const struct cpumask *)&__cpu_possible_mask)), but
          nr_cpu_ids == 16 (0x10)
          cpumask_weight(((const struct cpumask *)&__cpu_possible_mask)) == 1 (0x1)
  cpu_possible_mask contains CPUs 0
      not ok 1 test_cpumask_weight
      # test_cpumask_first: EXPECTATION FAILED at lib/cpumask_kunit.c:79
      Expected nr_cpu_ids <= cpumask_first_zero(((const struct cpumask *)&__cpu_possible_mask)), but
          nr_cpu_ids == 16 (0x10)
          cpumask_first_zero(((const struct cpumask *)&__cpu_possible_mask)) == 1 (0x1)
  cpu_possible_mask contains CPUs 0
      not ok 2 test_cpumask_first
      # test_cpumask_last: EXPECTATION FAILED at lib/cpumask_kunit.c:87
      Expected nr_cpu_ids - 1 == cpumask_last(((const struct cpumask *)&__cpu_possible_mask)), but
          nr_cpu_ids - 1 == 15 (0xf)
          cpumask_last(((const struct cpumask *)&__cpu_possible_mask)) == 0 (0x0)
  cpu_possible_mask contains CPUs 0
      not ok 3 test_cpumask_last
      # test_cpumask_next: EXPECTATION FAILED at lib/cpumask_kunit.c:94
      Expected nr_cpu_ids <= cpumask_next_zero(-1, ((const struct cpumask *)&__cpu_possible_mask)), but
          nr_cpu_ids == 16 (0x10)
          cpumask_next_zero(-1, ((const struct cpumask *)&__cpu_possible_mask)) == 1 (0x1)
  cpu_possible_mask contains CPUs 0
      not ok 4 test_cpumask_next
      ok 5 test_cpumask_iterators
      ok 6 test_cpumask_iterators_builtin
  # cpumask: pass:2 fail:4 skip:0 total:6
  # Totals: pass:2 fail:4 skip:0 total:6
  not ok 5 cpumask

  Probably not a new problem. Just discovered, not yet reported.