sha1_ce and sha2_ce modules no longer load on arm64

[dann frazier]

[Impact]
The sha{1,2}_ce modules no longer load on arm64, preventing the use of the hardware accelerated ARMv8 crypto extensions for SHA1, SHA-224/SHA-256.

[Test Case]
sudo modprobe sha1_ce
Currently fails:
[ 33.838295] module sha1_ce: unsupported RELA relocation: 275

[Fix]
For now I suggest reverting the commit that introduced the regression:
2675530a1d16 crypto: arm64/sha - avoid non-standard inline asm tricks

[Where problems could occur]
The purpose of this commit appears to be better compatibility with Clang, so regressions are likely to be with any developers using Clang with our kernel source.

[dann frazier (dannf)]

Reported upstream:
  https://www.spinics.net/lists/stable/msg429412.html

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-xenial' to 'verification-done-xenial'. If the problem still exists, change the tag 'verification-needed-xenial' to 'verification-failed-xenial'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[dann frazier (dannf)]

Verification:

ubuntu@bestovius:~$ lsmod | grep sha
sha2_ce 16384 0
sha1_ce 16384 0
ubuntu@bestovius:~$ cat /proc/version
Linux version 4.4.0-197-generic (buildd@bos02-arm64-056) (gcc version 5.4.0 20160609 (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.12) ) #229-Ubuntu SMP Wed Nov 25 21:00:42 UTC 2020

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 4.4.0-197.229

---------------
linux (4.4.0-197.229) xenial; urgency=medium

  * xenial/linux: 4.4.0-197.229 -proposed tracker (LP: #1905489)

  * sha1_ce and sha2_ce modules no longer load on arm64 (LP: #1905336)
    - SAUCE: Revert "crypto: arm64/sha - avoid non-standard inline asm tricks"

  * Fails to build on powerpc (LP: #1905475)
    - powerpc/uaccess-flush: fix corenet64_smp_defconfig build
    - SAUCE: powerpc/uaccess: only include kup-radix.h on PPC_BOOK3S_64

linux (4.4.0-196.228) xenial; urgency=medium

  * xenial/linux: 4.4.0-196.228 -proposed tracker (LP: #1905309)

  * CVE-2020-4788
    - SAUCE: powerpc/64s: Define MASKABLE_RELON_EXCEPTION_PSERIES_OOL
    - SAUCE: powerpc/64s: move some exception handlers out of line
    - powerpc/64s: flush L1D on kernel entry
    - SAUCE: powerpc: Add a framework for user access tracking
    - powerpc: Implement user_access_begin and friends
    - powerpc: Fix __clear_user() with KUAP enabled
    - powerpc/uaccess: Evaluate macro arguments once, before user access is
      allowed
    - powerpc/64s: flush L1D after user accesses

linux (4.4.0-195.227) xenial; urgency=medium

  * xenial/linux: 4.4.0-195.227 -proposed tracker (LP: #1903107)

  * Update kernel packaging to support forward porting kernels (LP: #1902957)
    - [Debian] Update for leader included in BACKPORT_SUFFIX

  * Avoid double newline when running insertchanges (LP: #1903293)
    - [Packaging] insertchanges: avoid double newline

  * EFI: Fails when BootCurrent entry does not exist (LP: #1899993)
    - efivarfs: Replace invalid slashes with exclamation marks in dentries.

  * CVE-2020-14351
    - perf/core: Fix race in the perf_mmap_close() function

  * CVE-2020-25645
    - geneve: add transport ports in route lookup for geneve

  * Xenial update: v4.4.241 upstream stable release (LP: #1902097)
    - ibmveth: Identify ingress large send packets.
    - tipc: fix the skb_unshare() in tipc_buf_append()
    - net/ipv4: always honour route mtu during forwarding
    - r8169: fix data corruption issue on RTL8402
    - ALSA: bebob: potential info leak in hwdep_read()
    - mm/kasan: print name of mem[set,cpy,move]() caller in report
    - mm/kasan: add API to check memory regions
    - compiler.h, kasan: Avoid duplicating __read_once_size_nocheck()
    - compiler.h: Add read_word_at_a_time() function.
    - lib/strscpy: Shut up KASAN false-positives in strscpy()
    - x86/mm/ptdump: Fix soft lockup in page table walker
    - net: hdlc: In hdlc_rcv, check to make sure dev is an HDLC device
    - net: hdlc_raw_eth: Clear the IFF_TX_SKB_SHARING flag after calling
      ether_setup
    - nfc: Ensure presence of NFC_ATTR_FIRMWARE_NAME attribute in
      nfc_genl_fw_download()
    - tcp: fix to update snd_wl1 in bulk receiver fast path
    - icmp: randomize the global rate limiter
    - cifs: remove bogus debug code
    - ima: Don't ignore errors from crypto_shash_update()
    - EDAC/i5100: Fix error handling order in i5100_init_one()
    - crypto: ixp4xx - Fix the size used in a 'dma_free_coherent()' call
    - media: Revert "media: exynos4-is: Add missed check for
      pinctrl_lookup_state()"
 ...