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abrt/SOURCES/0104-Fix-symlink-following-in-event-handler-scripts.patch
AlmaLinux RelEng Bot c3a68a8f85 import CS git abrt-2.10.9-26.el8_10
2026-08-12 07:53:29 -04:00

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From 23087aa718b3a21d17a5e22399769e183c3b3db9 Mon Sep 17 00:00:00 2001
From: rpm-build <rpm-build>
Date: Fri, 7 Aug 2026 13:20:17 +0200
Subject: [PATCH 4/5] Fix symlink following in event handler scripts
Resolves: CVE-2026-54230
Event handler scripts write output files using shell redirections and
Python open() which follow symlinks. An attacker who controls the dump
directory can plant symlinks to redirect root-owned writes to arbitrary
files such as /var/spool/cron/root.
Replace shell redirections with dd(1) using oflag=nofollow and conv=excl
flags, which mirror the O_NOFOLLOW|O_EXCL protection used by libreport's
dd_save_text()/create_new_file_at(). For Python scripts, use os.open()
with O_WRONLY|O_CREAT|O_EXCL|O_NOFOLLOW via dir_fd for safe writes.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
src/daemon/abrt-handle-upload.in | 6 +++++-
src/daemon/abrt_event.conf | 9 +++++----
src/plugins/abrt-action-analyze-core.in | 15 +++++++++++++++
src/plugins/abrt-action-analyze-vmcore.in | 12 +++++++++++-
.../abrt-action-check-oops-for-alt-component.in | 16 ++++++++++++++++
.../abrt-action-check-oops-for-hw-error.in | 16 ++++++++++++++++
src/plugins/abrt-action-generate-machine-id | 17 +++++++++++++++--
src/plugins/abrt-action-list-dsos | 15 +++++++++++++++
src/plugins/ccpp_event.conf | 6 +++---
src/plugins/gconf_event.conf | 2 +-
src/plugins/koops_event.conf | 2 +-
src/plugins/machine-id_event.conf | 2 +-
src/plugins/python3_event.conf | 2 +-
src/plugins/python_event.conf | 2 +-
src/plugins/smart_event.conf | 9 ++++++---
src/plugins/sosreport_event.conf | 2 +-
src/plugins/vimrc_event.conf | 8 ++++----
src/plugins/vmcore_event.conf | 4 ++--
src/plugins/xorg_event.conf | 12 ++++++------
19 files changed, 125 insertions(+), 32 deletions(-)
diff --git a/src/daemon/abrt-handle-upload.in b/src/daemon/abrt-handle-upload.in
index 469c2ae..53ac88d 100755
--- a/src/daemon/abrt-handle-upload.in
+++ b/src/daemon/abrt-handle-upload.in
@@ -38,7 +38,11 @@ def init_gettext():
import problem
def write_bytes_to(filename, b, uid, gid, mode):
- fd = os.open(filename, os.O_WRONLY | os.O_CREAT | os.O_TRUNC, mode)
+ try:
+ os.unlink(filename)
+ except FileNotFoundError:
+ pass
+ fd = os.open(filename, os.O_WRONLY | os.O_CREAT | os.O_EXCL | os.O_NOFOLLOW, mode)
if fd >= 0:
os.fchown(fd, uid, gid)
os.write(fd, b)
diff --git a/src/daemon/abrt_event.conf b/src/daemon/abrt_event.conf
index 9c75a4e..834a8c8 100644
--- a/src/daemon/abrt_event.conf
+++ b/src/daemon/abrt_event.conf
@@ -67,20 +67,21 @@ EVENT=post-create remote!=1
# uid file is missing for problems visible to all users
# (oops scanner is often set up to not create it).
# Record username only if uid element is present:
- if [ -f uid ]; then getent passwd "`cat uid`" | cut -d: -f1 >username; fi
+ if [ -f uid ]; then rm -f username && getent passwd "`cat uid`" | cut -d: -f1 | dd of=username oflag=nofollow conv=excl status=none; fi
# Save cpuinfo because crashes in some components are
# related to HW acceleration. The file must be captured for all crashes
# because of the library vs. executable problem.
+ rm -f "$DUMP_DIR/cpuinfo"
if command -v lscpu >/dev/null 2>&1; then
# use lscpu if installed
- lscpu > $DUMP_DIR/cpuinfo
+ lscpu | dd of="$DUMP_DIR/cpuinfo" oflag=nofollow conv=excl status=none
else
- cp /proc/cpuinfo $DUMP_DIR/cpuinfo
+ dd if=/proc/cpuinfo of="$DUMP_DIR/cpuinfo" oflag=nofollow conv=excl status=none
fi
# Record runlevel (if not yet done) and don't return non-0 if it fails:
EVENT=post-create runlevel= remote!=1
- runlevel >runlevel 2>&1
+ rm -f runlevel && runlevel 2>&1 | dd of=runlevel oflag=nofollow conv=excl status=none
exit 0
# A dummy EVENT=post-create for uploaded problems.
diff --git a/src/plugins/abrt-action-analyze-core.in b/src/plugins/abrt-action-analyze-core.in
index 9aca379..c6f7b19 100644
--- a/src/plugins/abrt-action-analyze-core.in
+++ b/src/plugins/abrt-action-analyze-core.in
@@ -35,8 +35,23 @@ def error_msg_and_die(s):
sys.stderr.write("%s\n" % s)
sys.exit(1)
+def safe_open_for_write(filename):
+ dir_fd = os.open(".", os.O_DIRECTORY | os.O_NOFOLLOW)
+ try:
+ try:
+ os.unlink(filename, dir_fd=dir_fd)
+ except FileNotFoundError:
+ pass
+ fd = os.open(filename, os.O_WRONLY | os.O_CREAT | os.O_EXCL | os.O_NOFOLLOW,
+ 0o640, dir_fd=dir_fd)
+ finally:
+ os.close(dir_fd)
+ return os.fdopen(fd, 'w')
+
def xopen(name, mode):
try:
+ if mode == "w":
+ return safe_open_for_write(name)
r = open(name, mode)
except IOError as ex:
error_msg_and_die("Can't open '%s': %s" % (name, ex))
diff --git a/src/plugins/abrt-action-analyze-vmcore.in b/src/plugins/abrt-action-analyze-vmcore.in
index c91737f..32b4ae2 100644
--- a/src/plugins/abrt-action-analyze-vmcore.in
+++ b/src/plugins/abrt-action-analyze-vmcore.in
@@ -86,7 +86,17 @@ if __name__ == "__main__":
if crash.returncode != 0:
error_msg_and_die(_("Can't process {0}:\n{1}").format(vmcore, err))
- backtrace_file = open("backtrace", "w")
+ dir_fd = os.open(".", os.O_DIRECTORY | os.O_NOFOLLOW)
+ try:
+ try:
+ os.unlink("backtrace", dir_fd=dir_fd)
+ except FileNotFoundError:
+ pass
+ bt_fd = os.open("backtrace", os.O_WRONLY | os.O_CREAT | os.O_EXCL | os.O_NOFOLLOW,
+ 0o640, dir_fd=dir_fd)
+ finally:
+ os.close(dir_fd)
+ backtrace_file = os.fdopen(bt_fd, "w")
dump_oops = Popen(["abrt-dump-oops", "-u", ".", dmesg_log], stdout=backtrace_file, stderr=PIPE, bufsize=-1)
out, err = dump_oops.communicate()
backtrace_file.close()
diff --git a/src/plugins/abrt-action-check-oops-for-alt-component.in b/src/plugins/abrt-action-check-oops-for-alt-component.in
index 3e8d853..963d2c4 100644
--- a/src/plugins/abrt-action-check-oops-for-alt-component.in
+++ b/src/plugins/abrt-action-check-oops-for-alt-component.in
@@ -45,8 +45,24 @@ def get_new_component(filename):
f.close()
return None
+def safe_open_for_write(filename):
+ dir_fd = os.open(".", os.O_DIRECTORY | os.O_NOFOLLOW)
+ try:
+ try:
+ os.unlink(filename, dir_fd=dir_fd)
+ except FileNotFoundError:
+ pass
+ fd = os.open(filename, os.O_WRONLY | os.O_CREAT | os.O_EXCL | os.O_NOFOLLOW,
+ 0o640, dir_fd=dir_fd)
+ finally:
+ os.close(dir_fd)
+ return os.fdopen(fd, 'w')
+
+
def open_or_die(filename, mode):
try:
+ if mode == "w":
+ return safe_open_for_write(filename)
f = open(filename, mode)
except IOError as e:
sys.stderr.write(str(e) + "\n")
diff --git a/src/plugins/abrt-action-check-oops-for-hw-error.in b/src/plugins/abrt-action-check-oops-for-hw-error.in
index f5e0afd..bc07767 100644
--- a/src/plugins/abrt-action-check-oops-for-hw-error.in
+++ b/src/plugins/abrt-action-check-oops-for-hw-error.in
@@ -47,8 +47,24 @@ def tail_with_search(filename, string, maxlen):
return retval
+def safe_open_for_write(filename):
+ dir_fd = os.open(".", os.O_DIRECTORY | os.O_NOFOLLOW)
+ try:
+ try:
+ os.unlink(filename, dir_fd=dir_fd)
+ except FileNotFoundError:
+ pass
+ fd = os.open(filename, os.O_WRONLY | os.O_CREAT | os.O_EXCL | os.O_NOFOLLOW,
+ 0o640, dir_fd=dir_fd)
+ finally:
+ os.close(dir_fd)
+ return os.fdopen(fd, 'w')
+
+
def open_or_die(filename, mode):
try:
+ if mode == "w":
+ return safe_open_for_write(filename)
f = open(filename, mode)
except IOError as e:
sys.stderr.write(str(e) + "\n")
diff --git a/src/plugins/abrt-action-generate-machine-id b/src/plugins/abrt-action-generate-machine-id
index 3cb145a..8d465f5 100644
--- a/src/plugins/abrt-action-generate-machine-id
+++ b/src/plugins/abrt-action-generate-machine-id
@@ -25,7 +25,6 @@ import sys
from argparse import ArgumentParser
from subprocess import check_output
import logging
-
import hashlib
def generate_machine_id_dmidecode():
@@ -171,7 +170,21 @@ if __name__ == '__main__':
if ARGS['output']:
try:
- with open(ARGS['output'], 'w') as fout:
+ output_path = ARGS['output']
+ output_dir = os.path.dirname(output_path) or '.'
+ output_name = os.path.basename(output_path)
+ dir_fd = os.open(output_dir, os.O_DIRECTORY | os.O_NOFOLLOW)
+ try:
+ try:
+ os.unlink(output_name, dir_fd=dir_fd)
+ except FileNotFoundError:
+ pass
+ fd = os.open(output_name,
+ os.O_WRONLY | os.O_CREAT | os.O_EXCL | os.O_NOFOLLOW,
+ 0o640, dir_fd=dir_fd)
+ finally:
+ os.close(dir_fd)
+ with os.fdopen(fd, 'w') as fout:
print_result(machineids, fout, not ARGS['noprefix'])
except IOError as ex:
logging.error("Could not open output file: {0}".format(str(ex)))
diff --git a/src/plugins/abrt-action-list-dsos b/src/plugins/abrt-action-list-dsos
index 8bf5415..bf828e4 100644
--- a/src/plugins/abrt-action-list-dsos
+++ b/src/plugins/abrt-action-list-dsos
@@ -17,8 +17,23 @@ def error_msg_and_die(s):
sys.stderr.write("%s\n" % s)
sys.exit(1)
+def safe_open_for_write(filename):
+ dir_fd = os.open(".", os.O_DIRECTORY | os.O_NOFOLLOW)
+ try:
+ try:
+ os.unlink(filename, dir_fd=dir_fd)
+ except FileNotFoundError:
+ pass
+ fd = os.open(filename, os.O_WRONLY | os.O_CREAT | os.O_EXCL | os.O_NOFOLLOW,
+ 0o640, dir_fd=dir_fd)
+ finally:
+ os.close(dir_fd)
+ return os.fdopen(fd, 'w')
+
def xopen(name, mode):
try:
+ if mode == "w":
+ return safe_open_for_write(name)
r = open(name, mode)
except IOError as e:
error_msg_and_die("Can't open '%s': %s" % (name, e))
diff --git a/src/plugins/ccpp_event.conf b/src/plugins/ccpp_event.conf
index e89e98b..a806609 100644
--- a/src/plugins/ccpp_event.conf
+++ b/src/plugins/ccpp_event.conf
@@ -36,7 +36,7 @@ EVENT=post-create type=CCpp remote!=1
user_log=$user_log$line$'\n'
fi
done <<< "$user_log_full"
- test -n "${user_log::-1}" && printf "User Logs:\n--%s--\n" "$user_log" >$DUMP_DIR/var_log_messages
+ test -n "${user_log::-1}" && rm -f "$DUMP_DIR/var_log_messages" && printf "User Logs:\n--%s--\n" "$user_log" | dd of="$DUMP_DIR/var_log_messages" oflag=nofollow conv=excl status=none
# Do not use '&&' here because if $user_log is the empty string
# then the script does not continue to get the system logs
{
@@ -49,7 +49,7 @@ EVENT=post-create type=CCpp remote!=1
system_log=$system_log$line$'\n'
fi
done <<< "$system_log_full"
- test -n "${system_log::-1}" && printf "System Logs:\n--%s--\n" "$system_log" >$DUMP_DIR/var_log_messages
+ test -n "${system_log::-1}" && rm -f "$DUMP_DIR/var_log_messages" && printf "System Logs:\n--%s--\n" "$system_log" | dd of="$DUMP_DIR/var_log_messages" oflag=nofollow conv=excl status=none
# Always exit with true here, because the false at
# the beginning would cause the post-create hook to remove
# the current problem directory.
@@ -71,7 +71,7 @@ EVENT=collect_xsession_errors type=CCpp dso_list~=.*/libX11.*
test -r "$xsession_errors" || { echo "Can't read $xsession_errors"; exit 0; }
executable=`cat executable` &&
base_executable=${executable##*/} &&
- grep -F -e "$base_executable" "$xsession_errors" | tail -999 >xsession_errors &&
+ rm -f xsession_errors && grep -F -e "$base_executable" "$xsession_errors" | tail -999 | dd of=xsession_errors oflag=nofollow conv=excl status=none &&
echo "Element 'xsession_errors' saved"
# TODO: can we still specify additional directories to search for debuginfos,
diff --git a/src/plugins/gconf_event.conf b/src/plugins/gconf_event.conf
index 2e1f8ae..1d37493 100644
--- a/src/plugins/gconf_event.conf
+++ b/src/plugins/gconf_event.conf
@@ -6,7 +6,7 @@ EVENT=collect_GConf type=CCpp dso_list~=.*/libgconf-2.*
gconftool-2 --dir-exists=$gconfdir ||
{ echo "GConf directory $gconfdir does not exist"; exit 0; }
} &&
- gconftool-2 --recursive-list $gconfdir >gconf_subtree &&
+ rm -f gconf_subtree && gconftool-2 --recursive-list $gconfdir | dd of=gconf_subtree oflag=nofollow conv=excl status=none &&
echo "Element 'gconf_subtree' saved"
diff --git a/src/plugins/koops_event.conf b/src/plugins/koops_event.conf
index 5e53723..a59eeee 100644
--- a/src/plugins/koops_event.conf
+++ b/src/plugins/koops_event.conf
@@ -4,7 +4,7 @@ EVENT=post-create type=Kerneloops remote!=1
if [ "$(cat /proc/sys/kernel/dmesg_restrict)" == "0" ]; then
# >> instead of > is due to bugzilla.redhat.com/854266
# 'dmesg' file is required by check-oops-for-hw-error
- dmesg >>dmesg
+ dmesg | dd of=dmesg oflag=nofollow,append conv=notrunc status=none
abrt-action-check-oops-for-hw-error
fi
{
diff --git a/src/plugins/machine-id_event.conf b/src/plugins/machine-id_event.conf
index 2825911..76979ab 100644
--- a/src/plugins/machine-id_event.conf
+++ b/src/plugins/machine-id_event.conf
@@ -1,3 +1,3 @@
#if you want to include *machineid* in dump directories:
EVENT=post-create remote!=1
- /usr/libexec/abrt-action-generate-machine-id -o $DUMP_DIR/machineid >>event_log 2>&1 || :
+ /usr/libexec/abrt-action-generate-machine-id -o $DUMP_DIR/machineid 2>&1 | dd of=event_log oflag=nofollow,append conv=notrunc status=none || :
diff --git a/src/plugins/python3_event.conf b/src/plugins/python3_event.conf
index 481a1c4..c317ec5 100644
--- a/src/plugins/python3_event.conf
+++ b/src/plugins/python3_event.conf
@@ -10,7 +10,7 @@ EVENT=post-create type=Python3 remote!=1
abrt-action-analyze-python
# save Python3 package version
for line in $(rpm -qf $(which $(cut -d' ' -f1 < cmdline)) 2>/dev/null); do
- echo -n $line > interpreter
+ rm -f interpreter && echo -n $line | dd of=interpreter oflag=nofollow conv=excl status=none
done
EVENT=report_Bugzilla type=Python3 component!=anaconda
diff --git a/src/plugins/python_event.conf b/src/plugins/python_event.conf
index 1824364..2ec4cc7 100644
--- a/src/plugins/python_event.conf
+++ b/src/plugins/python_event.conf
@@ -10,7 +10,7 @@ EVENT=post-create type=Python remote!=1
abrt-action-analyze-python
# save Python2 package version
for line in $(rpm -qf $(which $(cut -d' ' -f1 < cmdline)) 2>/dev/null); do
- echo -n $line > interpreter
+ rm -f interpreter && echo -n $line | dd of=interpreter oflag=nofollow conv=excl status=none
done
EVENT=report_Bugzilla type=Python component!=anaconda
diff --git a/src/plugins/smart_event.conf b/src/plugins/smart_event.conf
index 2a0efb5..75fc0fe 100644
--- a/src/plugins/smart_event.conf
+++ b/src/plugins/smart_event.conf
@@ -9,24 +9,27 @@
EVENT=post-create component=gnome-disk-utility remote!=1
which skdump >/dev/null 2>&1 || exit 0
+ rm -f smart_data
for f in /dev/[sh]d[a-z]; do
test -e "$f" || continue
skdump "$f"
echo
- done >smart_data
+ done | dd of=smart_data oflag=nofollow conv=excl status=none
EVENT=post-create component=libatasmart remote!=1
which skdump >/dev/null 2>&1 || exit 0
+ rm -f smart_data
for f in /dev/[sh]d[a-z]; do
test -e "$f" || continue
skdump "$f"
echo
- done >smart_data
+ done | dd of=smart_data oflag=nofollow conv=excl status=none
EVENT=post-create component=udisks remote!=1
which skdump >/dev/null 2>&1 || exit 0
+ rm -f smart_data
for f in /dev/[sh]d[a-z]; do
test -e "$f" || continue
skdump "$f"
echo
- done >smart_data
+ done | dd of=smart_data oflag=nofollow conv=excl status=none
diff --git a/src/plugins/sosreport_event.conf b/src/plugins/sosreport_event.conf
index de5dfa7..988af6c 100644
--- a/src/plugins/sosreport_event.conf
+++ b/src/plugins/sosreport_event.conf
@@ -11,7 +11,7 @@ EVENT=post-create remote!=1
--only=cups --only=logs --only=grub2 --only=cron --only=pci \
--only=auditd --only=selinux --only=lvm2 --only=sar \
--only=processor \
- >sosreport.log 2>&1 \
+ 2>&1 | dd of=sosreport.log oflag=nofollow conv=excl status=none \
&& {
rm sosreport.log
rm sosreport*.md5
diff --git a/src/plugins/vimrc_event.conf b/src/plugins/vimrc_event.conf
index cef991a..e011f29 100644
--- a/src/plugins/vimrc_event.conf
+++ b/src/plugins/vimrc_event.conf
@@ -6,13 +6,13 @@ EVENT=collect_vimrc_user component=vim
gvimrc=~/.gvimrc
saved=none
if [ -r $vimrc -a -f $vimrc ]; then
- cp $vimrc user_vimrc || exit $?
+ rm -f user_vimrc && dd if="$vimrc" of=user_vimrc oflag=nofollow conv=excl status=none || exit $?
saved="$saved, user_vimrc"
else
echo "File $vimrc not found"
fi
if [ -r $gvimrc -a -f $gvimrc ]; then
- cp $gvimrc user_gvimrc || exit $?
+ rm -f user_gvimrc && dd if="$gvimrc" of=user_gvimrc oflag=nofollow conv=excl status=none || exit $?
saved="$saved, user_gvimrc"
else
echo "File $gvimrc not found"
@@ -24,13 +24,13 @@ EVENT=collect_vimrc_system component=vim
gvimrc=/etc/gvimrc
saved=none
if [ -r $vimrc -a -f $vimrc ]; then
- cp $vimrc system_vimrc || exit $?
+ rm -f system_vimrc && dd if="$vimrc" of=system_vimrc oflag=nofollow conv=excl status=none || exit $?
saved="$saved, system_vimrc"
else
echo "File $vimrc not found"
fi
if [ -r $gvimrc -a -f $gvimrc ]; then
- cp $gvimrc system_gvimrc || exit $?
+ rm -f system_gvimrc && dd if="$gvimrc" of=system_gvimrc oflag=nofollow conv=excl status=none || exit $?
saved="$saved, system_gvimrc"
else
echo "File $gvimrc not found"
diff --git a/src/plugins/vmcore_event.conf b/src/plugins/vmcore_event.conf
index 61bc9d1..6592a9f 100644
--- a/src/plugins/vmcore_event.conf
+++ b/src/plugins/vmcore_event.conf
@@ -12,7 +12,7 @@ EVENT=post-create type=vmcore remote!=1
# MCE oopses don't have kernel version in them,
# but it should be specified earlier in the log.
k=`sed -n '/Linux version/ s/.*Linux version \([^ ]*\) .*/\1/p' vmcore-dmesg.txt | tail -n1`
- test "$k" != "" && printf "%s" "$k" >kernel
+ test "$k" != "" && rm -f kernel && printf "%s" "$k" | dd of=kernel oflag=nofollow conv=excl status=none
else
# No vmcore-dmesg.txt, do it the hard way:
abrt-action-analyze-vmcore || exit $?
@@ -23,7 +23,7 @@ EVENT=post-create type=vmcore remote!=1
# Try creating it from dmesg_log (created by abrt-action-analyze-vmcore):
test -f dmesg_log || exit 0
k=`sed -n '/Linux version/ s/.*Linux version \([^ ]*\) .*/\1/p' dmesg_log | tail -n1`
- test "$k" != "" && printf "%s" "$k" >kernel
+ test "$k" != "" && rm -f kernel && printf "%s" "$k" | dd of=kernel oflag=nofollow conv=excl status=none
fi
)
# Do not fail the event (->do not delete problem dir)
diff --git a/src/plugins/xorg_event.conf b/src/plugins/xorg_event.conf
index 8d0d585..d183070 100644
--- a/src/plugins/xorg_event.conf
+++ b/src/plugins/xorg_event.conf
@@ -6,13 +6,13 @@ EVENT=post-create type=xorg remote!=1
# Get versions of binaries listed in Xorg backtrace
abrt-action-list-dsos -m backtrace -o dso_list
#
- test -f /var/log/Xorg.0.log && cp /var/log/Xorg.0.log .
- test -f /etc/X11/xorg.conf && cp /etc/X11/xorg.conf .
- test -d /etc/X11/xorg.conf.d && tar czf etc_X11_xorg_conf_d.tar.gz /etc/X11/xorg.conf.d
- test -d /usr/share/X11/xorg.conf.d && tar czf usr_share_xorg_conf_d.tar.gz /usr/share/X11/xorg.conf.d
+ test -f /var/log/Xorg.0.log && rm -f Xorg.0.log && dd if=/var/log/Xorg.0.log of=Xorg.0.log oflag=nofollow conv=excl status=none
+ test -f /etc/X11/xorg.conf && rm -f xorg.conf && dd if=/etc/X11/xorg.conf of=xorg.conf oflag=nofollow conv=excl status=none
+ test -d /etc/X11/xorg.conf.d && rm -f etc_X11_xorg_conf_d.tar.gz && tar cz /etc/X11/xorg.conf.d | dd of=etc_X11_xorg_conf_d.tar.gz oflag=nofollow conv=excl status=none
+ test -d /usr/share/X11/xorg.conf.d && rm -f usr_share_xorg_conf_d.tar.gz && tar cz /usr/share/X11/xorg.conf.d | dd of=usr_share_xorg_conf_d.tar.gz oflag=nofollow conv=excl status=none
#
- # >> instead of > is due to bugzilla.redhat.com/show_bug.cgi?id=854266
- dmesg >>dmesg
+ # append instead of overwrite is due to bugzilla.redhat.com/show_bug.cgi?id=854266
+ dmesg | dd of=dmesg oflag=nofollow,append conv=notrunc status=none
#
# save lspci -vvv output?
--
2.55.0
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