Version-Release number of selected component:
dnf-2.0.0-2.fc26

Additional info:
reporter:       libreport-2.9.0
cmdline:        /usr/libexec/system-python /usr/bin/dnf update --exclude=gjs
crash_function: _out_progress
exception_type: OSError
executable:     /usr/bin/dnf
kernel:         4.10.0-0.rc6.git1.2.fc26.x86_64
runlevel:       N 5
type:           Python3
uid:            0

Truncated backtrace:
output.py:2015:_out_progress:OSError: [Errno 5] Input/output error

Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/dnf/yum/rpmtrans.py", line 419, in callback
    self._instProgress(amount, total, key)
  File "/usr/lib/python3.6/site-packages/dnf/yum/rpmtrans.py", line 492, in _instProgress
    self.total_actions)
  File "/usr/lib/python3.6/site-packages/dnf/cli/output.py", line 1989, in progress
    percent, process, pkgname, wid1)
  File "/usr/lib/python3.6/site-packages/dnf/cli/output.py", line 2015, in _out_progress
    print(" ")
OSError: [Errno 5] Input/output error

Local variables in innermost frame:
msg: '  Upgrading   : kernel-headers-4.10.0-0.rc6.git2.2.fc26.x86_64            32/74'
wid2: 55
fmt: '  %s: %s   32/74'
wid1: 12
pkgname: 'kernel-headers-4.10.0-0.rc6.git2.2.fc26.x86_64'
process: 'Upgrading'
percent: 100
ts_total: 74
ts_done: 32
ti_total: 4231076
ti_done: 4231076
self: <dnf.cli.output.CliTransactionDisplay object at 0x7f80a4618780>