32-bit test failure: test/crypto_tests.cpp(561): error: in “crypto_tests/sha256d64”: check memcmp(out1, out2, 32 * i) == 0 has failed #14580

issue error10 openend this issue on October 26, 2018
  1. error10 commented at 3:28 am on October 26, 2018: contributor

    A test in the bitcoin test suite is failing for me while running the sha256d64 test cases in crypto_tests.cpp, but only on 32-bit distro. It passes on 64-bit.

    I expected the test suite to pass.

    The test suite log is:

     0$ cat test/crypto_tests.cpp.log
 1Running 11 test cases...
 2Entering test module "Bitcoin Test Suite"
 3test/crypto_tests.cpp(23): Entering test suite "crypto_tests"
 4test/crypto_tests.cpp(217): Entering test case "ripemd160_testvectors"
 5test/crypto_tests.cpp(217): Leaving test case "ripemd160_testvectors"; testing time: 343157us
 6test/crypto_tests.cpp(233): Entering test case "sha1_testvectors"
 7test/crypto_tests.cpp(233): Leaving test case "sha1_testvectors"; testing time: 200719us
 8test/crypto_tests.cpp(249): Entering test case "sha256_testvectors"
 9test/crypto_tests.cpp(249): Leaving test case "sha256_testvectors"; testing time: 518373us
10test/crypto_tests.cpp(271): Entering test case "sha512_testvectors"
11test/crypto_tests.cpp(271): Leaving test case "sha512_testvectors"; testing time: 1071278us
12test/crypto_tests.cpp(308): Entering test case "hmac_sha256_testvectors"
13test/crypto_tests.cpp(308): Leaving test case "hmac_sha256_testvectors"; testing time: 10312us
14test/crypto_tests.cpp(361): Entering test case "hmac_sha512_testvectors"
15test/crypto_tests.cpp(361): Leaving test case "hmac_sha512_testvectors"; testing time: 22518us
16test/crypto_tests.cpp(429): Entering test case "aes_testvectors"
17test/crypto_tests.cpp(429): Leaving test case "aes_testvectors"; testing time: 3358us
18test/crypto_tests.cpp(445): Entering test case "aes_cbc_testvectors"
19test/crypto_tests.cpp(445): Leaving test case "aes_cbc_testvectors"; testing time: 4206us
20test/crypto_tests.cpp(497): Entering test case "chacha20_testvector"
21test/crypto_tests.cpp(497): Leaving test case "chacha20_testvector"; testing time: 3051us
22test/crypto_tests.cpp(527): Entering test case "countbits_tests"
23test/crypto_tests.cpp(527): Leaving test case "countbits_tests"; testing time: 63452us
24test/crypto_tests.cpp(549): Entering test case "sha256d64"
25test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
26test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
27test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
28test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
29test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
30test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
31test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
32test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
33test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
34test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
35test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
36test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
37test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
38test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
39test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
40test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
41test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
42test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
43test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
44test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
45test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
46test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
47test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
48test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
49test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
50test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
51test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
52test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
53test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
54test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
55test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
56test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
57test/crypto_tests.cpp(549): Leaving test case "sha256d64"; testing time: 5115us
58test/crypto_tests.cpp(23): Leaving test suite "crypto_tests"; testing time: 2246048us
59Leaving test module "Bitcoin Test Suite"; testing time: 2246167us
60
61*** 32 failures are detected in the test module "Bitcoin Test Suite"

    This is occurring on Fedora 29 i686 while building bitcoin. The builder has 4GB RAM. This environment includes boost 1.66.0 and openssl 1.1.1. The test passes while building bitcoin on Fedora 29 x86_64 on the same machine. The test also passed on Fedora 28 i686, which has boost 1.66.0 and openssl 1.1.0i.

    This is bitcoin 0.17.0 obtained from thhe github release tagged v0.17.0.

    I glanced at the test but I didn’t see anything obvious that might cause it to fail on a 32-bit system. I would appreciate a hint as to where to look next.

  2. fanquake added the label Tests on Oct 26, 2018
  3. maflcko commented at 11:59 am on October 26, 2018: member
    Could you also check if branch 16 and branch master are affected, please?
  4. error10 commented at 4:16 pm on October 26, 2018: contributor

    Could you also check if branch 16 and branch master are affected, please?

    The test passes on v0.16.3, and fails identically as above on master. But it turns out this test is not present in 0.16.3 anyway.

  5. sipa commented at 4:25 pm on October 26, 2018: member
    Do you have the same issue with release binaries?
  6. error10 commented at 4:38 pm on October 26, 2018: contributor

    Do you have the same issue with release binaries?

    Good call. I downloaded bitcoin-0.17.0-i686-pc-linux-gnu.tar.gz, and its included bin/test_bitcoin passes. So, I guess I don’t have the same issue with release binaries.

  7. maflcko commented at 6:21 pm on November 2, 2018: member
    I believe this also happens 32bit Ubuntu Cosmic.
  8. error10 commented at 9:02 pm on November 2, 2018: contributor

    I believe this also happens 32bit Ubuntu Cosmic.

    I don’t just believe. I tested it, and sure enough it blows up on Ubuntu 18.10 i386, identically as above.

    Cosmic also has openssl 1.1.1, so perhaps it’s something specific to 1.1.1? A 32-bit openssl bug maybe?

  10. pkepler commented at 1:28 am on January 16, 2019: none
    I am running 0.15.1 that won’t upgrade on a raspberry pi 3 B. If I can help in any way with testing I would be glad to.
  11. error10 commented at 2:20 am on January 16, 2019: contributor

    I am running 0.15.1 that won’t upgrade on a raspberry pi 3 B. If I can help in any way with testing I would be glad to.

    You can just run a 64-bit distro on the RPi 3. Until Raspbian goes 64-bit, Fedora is probably your best bet. And then you can just pick up my aarch64 repo if you want.

  13. maflcko commented at 3:48 pm on February 13, 2019: member
    As a workaround you could build from our ./depends (which comes with an older openssl)
  14. error10 commented at 4:09 pm on February 13, 2019: contributor
    If 32-bit support were officially just dropped, I wouldn’t complain. Aside from ancient Raspberry Pi 1 and 2s and the occasional antique netbook, there’s virtually no hardware out there these days that requires a 32-bit OS. And the resource requirements of Bitcoin seem unlikely to shrink in the future.
  15. maflcko commented at 4:13 pm on February 13, 2019: member
    Oh, we didn’t drop support for 32-bit. This is just a bug introduced in a newer version of openssl, but no one looked into it to understand what happened or how it could be worked around.
  16. maflcko commented at 2:35 pm on May 2, 2019: member
    I am seeing this running the gitian build (which is built with depends) on ubuntu_xenial_armhf … :weary:
  17. maflcko commented at 6:54 pm on May 2, 2019: member

    Steps to reproduce on fresh Ubuntu Bionic 64-bit:

     0dpkg --add-architecture i386
 1apt update && apt install wget libc6:i386 libncurses5:i386 libstdc++6:i386
 2wget https://bitcoincore.org/bin/bitcoin-core-0.18.0/bitcoin-0.18.0-i686-pc-linux-gnu.tar.gz
 3tar -xzf bitcoin-0.18.0-i686-pc-linux-gnu.tar.gz
 4./bitcoin-0.18.0/bin/test_bitcoin -t crypto_tests
 5Running 11 test cases...
 6test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
 7test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
 8test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
 9test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
10test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
11test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
12test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
13test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
14test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
15test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
16test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
17test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
18test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
19test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
20test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
21test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
22test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
23test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
24test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
25test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
26test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
27test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
28test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
29test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
30test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
31test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
32test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
33test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
34test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
35test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
36test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
37test/crypto_tests.cpp(561): error: in "crypto_tests/sha256d64": check memcmp(out1, out2, 32 * i) == 0 has failed
38
39*** 32 failures are detected in the test module "Bitcoin Test Suite"
  18. maflcko commented at 7:14 pm on May 2, 2019: member

    Why is the travis 32-bit not failing?

    https://travis-ci.org/bitcoin/bitcoin/jobs/527334881#L2853

  19. maflcko commented at 8:34 pm on May 2, 2019: member
    So I guess it has nothing to do with openssl
  20. maflcko commented at 9:11 pm on May 2, 2019: member

    I can reproduce also on vanilla fedora 30 - 32 bit

    Schermafdruk van 2019-05-02 17-09-39

  21. sipa commented at 9:13 pm on May 2, 2019: member
    @MarcoFalke What does the “Using the ‘%s’ SHA256 implementation” say on that system/build? Also what does cat /proc/cpuinfo | fgrep flags say?
  22. maflcko commented at 9:20 pm on May 2, 2019: member 
    0$ ./src/bitcoind -printtoconsole -regtest | grep SHA
12019-05-02T21:19:53Z Using the 'standard,sse41(4way),avx2(8way)' SHA256 implementation
2
3
4$ cat /proc/cpuinfo | fgrep flags | uniq -c
5      8 flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon xtopology cpuid tsc_known_freq pni pclmulqdq vmx ssse3 fma cx16 sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch cpuid_fault ssbd ibrs ibpb tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt xsaveopt xsavec xgetbv1 xsaves arat umip
  23. sipa commented at 3:43 am on May 5, 2019: member
    I believe this is a GCC bug, filed as https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90348
  24. practicalswift commented at 7:55 am on May 5, 2019: contributor
    @sipa Excellent work! This sure looks like a miscompilation bug in gcc: the test case does not contain any UB that would give gcc the leeway to behave this way.
  25. laanwj referenced this in commit fd61b9fc22 on May 16, 2019
  26. sidhujag referenced this in commit abbe50b4a1 on May 18, 2019
  27. practicalswift commented at 4:53 pm on May 26, 2019: contributor
    Can be closed now that #15983 has been merged? @error10, thanks a lot for reporting! This turned out to be a very valuable bug report.
  28. maflcko closed this on May 27, 2019
  29. PastaPastaPasta referenced this in commit c019c6346a on Jun 27, 2021
  30. PastaPastaPasta referenced this in commit d5e4873c40 on Jun 28, 2021
  31. PastaPastaPasta referenced this in commit 166c770296 on Jun 29, 2021
  32. PastaPastaPasta referenced this in commit 6d3605d245 on Jul 1, 2021
  33. PastaPastaPasta referenced this in commit 8804421c39 on Jul 1, 2021
  34. PastaPastaPasta referenced this in commit fc4c9f49e5 on Jul 8, 2021
  35. PastaPastaPasta referenced this in commit 55c35078a5 on Jul 10, 2021
  36. bitcoin locked this on Dec 16, 2021
  37. hebasto commented at 9:03 am on February 7, 2023: member

    I believe this is a GCC bug, filed as https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90348

    It looks like the bug has been fixed in GCC 12.1+.

  38. bitcoin unlocked this on Feb 7, 2023
  39. bitcoin locked this on Feb 7, 2023
  40. bitcoin unlocked this on Feb 7, 2023
  41. gades referenced this in commit f36d273496 on Nov 21, 2023
  42. gades referenced this in commit c52120d468 on Dec 9, 2023
  43. bitcoin locked this on Feb 7, 2024


error10 maflcko sipa luke-jr pkepler develop7 practicalswift hebasto

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