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Bug 1963321 - dnf report s "unexpected return value from hdr.sprintf when checking signature" error after downloading package with broken signature
Summary: dnf report s "unexpected return value from hdr.sprintf when checking signatur...
Status: CLOSED DUPLICATE of bug 1963732
Alias: None
Product: Fedora
Classification: Fedora
Component: dnf
Version: 33
Hardware: Unspecified
OS: Unspecified
Target Milestone: ---
Assignee: rpm-software-management
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2021-05-22 10:16 UTC by Yann Droneaud
Modified: 2021-05-23 19:48 UTC (History)
9 users (show)

Fixed In Version:
Doc Type: ---
Doc Text:
Clone Of:
Last Closed: 2021-05-23 19:48:21 UTC
Type: Bug

Attachments (Terms of Use)

Description Yann Droneaud 2021-05-22 10:16:24 UTC
After downloading broken packages:

    # dnf distro-sync
      package firefox-88.0.1-1.fc33.x86_64 does not verify: Payload SHA256 ALT digest: BAD (Expected 9047f23bef8d4d76d2fa672403e178e0ba2aede33df1d110609b9f21fb673977 != c068a24b1ad9c98f60e4fe4172784dec2147154f0f8e6008067d923257d6575f)
      package kernel-debug-debuginfo-5.12.5-200.fc33.x86_64 does not verify: Payload SHA256 ALT digest: BAD (Expected a1eed29ad88ceb61baf5a1daeacabb3c9e86b55efcf5b81b0b5d547eb57f0bcd != fcc2f78645c573200cf5bf171255bab5f854fdbab588ee4b4f3a870d0289039e)

Further attempts fail with the following python trace:

    # dnf distro-sync
    Traceback (most recent call last):
       File "/usr/bin/dnf", line 58, in <module>
        main.user_main(sys.argv[1:], exit_code=True)
      File "/usr/lib/python3.9/site-packages/dnf/cli/", line 201, in user_main
        errcode = main(args)
      File "/usr/lib/python3.9/site-packages/dnf/cli/", line 67, in main
        return _main(base, args, cli_class, option_parser_class)
      File "/usr/lib/python3.9/site-packages/dnf/cli/", line 106, in _main
        return cli_run(cli, base)
      File "/usr/lib/python3.9/site-packages/dnf/cli/", line 130, in cli_run
        ret = resolving(cli, base)
      File "/usr/lib/python3.9/site-packages/dnf/cli/", line 176, in resolving
      File "/usr/lib/python3.9/site-packages/dnf/cli/", line 238, in do_transaction
      File "/usr/lib/python3.9/site-packages/dnf/cli/", line 278, in gpgsigcheck
        result, errmsg = self._sig_check_pkg(po)
      File "/usr/lib/python3.9/site-packages/dnf/", line 1297, in _sig_check_pkg
        sigresult = dnf.rpm.miscutils.checkSig(ts, po.localPkg())
      File "/usr/lib/python3.9/site-packages/dnf/rpm/", line 90, in checkSig
        raise ValueError('Unexpected return value %r from hdr.sprintf when checking signature.' % siginfo)
    ValueError: Unexpected return value 'RSA/SHA256, Wed 19 May 2021 11:27:32 PM CEST, Key ID 49fd77499570ff31' from hdr.sprintf when checking signature.

Comment 1 Yann Droneaud 2021-05-23 19:48:21 UTC

*** This bug has been marked as a duplicate of bug 1963732 ***

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