Version-Release number of selected component:
dnf-1.1.10-3.fc25

Additional info:
reporter:       libreport-2.8.0
cmdline:        /usr/libexec/system-python /usr/bin/dnf update
executable:     /usr/bin/dnf
kernel:         4.8.4-301.fc25.x86_64+debug
pkg_fingerprint: 4089 D8F2 FDB1 9C98
pkg_vendor:     Fedora Project
runlevel:       N 5
type:           Python3
uid:            0

Truncated backtrace:
output.py:2187:_out_progress:OSError: [Errno 5] Input/output error

Traceback (most recent call last):
  File "/usr/lib/python3.5/site-packages/dnf/yum/rpmtrans.py", line 415, in callback
    self._instProgress( bytes, total, h )
  File "/usr/lib/python3.5/site-packages/dnf/yum/rpmtrans.py", line 493, in _instProgress
    self.total_actions)
  File "/usr/lib/python3.5/site-packages/dnf/cli/output.py", line 2164, in progress
    percent, process, pkgname, wid1)
  File "/usr/lib/python3.5/site-packages/dnf/cli/output.py", line 2187, in _out_progress
    sys.stdout.write(msg)
OSError: [Errno 5] Input/output error

Local variables in innermost frame:
ts_total: 94
fmt: '\r  %s: %s [===================================================================================================================================================            ] 40/94'
process: 'Upgrading'
msg: '\r  Upgrading   : tzdata-2016h-1.fc25.noarch [===================================================================================================================================================            ] 40/94'
pkgname: 'tzdata-2016h-1.fc25.noarch'
wid1: 12
ts_done: 40
percent: 93
wid2: 26
self: <dnf.cli.output.CliTransactionDisplay object at 0x7f306fba3c50>
ti_total: 1956628
ti_done: 1822121