Resolves: bz1919052
Upstream: Fedora
Conflict: None
commit d5f6d38173
Author: Coiby Xu <coxu@redhat.com>
Date: Thu Apr 1 15:32:13 2021 +0800
Set up bond cmdline by "nmcli --get-values"
Now kdumpctl will exit if failing to set up bond cmdline.
Signed-off-by: Coiby Xu <coxu@redhat.com>
Acked-by: Kairui Song <kasong@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz1919052
Upstream: Fedora
Conflict: None
commit 8b08b4f17b
Author: Coiby Xu <coxu@redhat.com>
Date: Thu Apr 1 15:32:11 2021 +0800
Set up s390 znet cmdline by "nmcli --get-values"
Now kdumpctl will abort when failing to set up znet.
Signed-off-by: Coiby Xu <coxu@redhat.com>
Acked-by: Kairui Song <kasong@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz1919052
Upstream: Fedora
Conflict: None
commit 10c309b5f7
Author: Coiby Xu <coxu@redhat.com>
Date: Thu Apr 1 15:32:08 2021 +0800
Add helper to get value by field using "nmcli --get-values"
nmcli --get-values <field> connection show /org/freedesktop/NetworkManager/ActiveConnection/1
returns the following value for the corresponding field respectively,
Field Value
IP4.DNS "10.19.42.41 | 10.11.5.19 | 10.5.30.160"
802-3-ethernet.s390-subchannels ""
bond.options "mode=balance-rr"
Signed-off-by: Coiby Xu <coxu@redhat.com>
Acked-by: Kairui Song <kasong@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz1950932
Upstream: Fedora
Conflict: None
commit 8a33ffffbc
Author: Coiby Xu <coxu@redhat.com>
Date: Thu May 6 09:20:27 2021 +0800
rd.route should use the name from kdump_setup_ifname
This fixes bz1854037 which happens because kexec-tools generates rd.route for
eth0 instead of for kdump-eth0,
1. "rd.route=168.63.129.16:10.0.0.1:eth0 rd.route=169.254.169.254:10.0.0.1:eth0" is passed to the dracut cmdline by kexec-tools
2. In the 2rd kernel, dracut/modules.d/35network-manager/nm-config.sh calls
/usr/libexec/nm-initrd-generator to generate two .nmconnection files
based on the dracut cmdline, i.e. kdump-eth0.nmconnection and eth0.nmconnection,
- /run/NetworkManager/system-connections/kdump-eth0.nmconnection
[connection]
id=kdump-eth0
uuid=3ef53b1b-3908-437e-a15f-cf1f3ea2678b
type=ethernet
autoconnect-retries=1
interface-name=kdump-eth0
multi-connect=1
permissions=
wait-device-timeout=60000
[ethernet]
mac-address-blacklist=
[ipv4]
address1=10.0.0.4/24,10.0.0.1
dhcp-timeout=90
dns=168.63.129.16;
dns-search=
may-fail=false
method=manual
[ipv6]
addr-gen-mode=eui64
dhcp-timeout=90
dns-search=
method=disabled
[proxy]
- /run/NetworkManager/system-connections/eth0.nmconnection
[connection]
id=eth0
uuid=f224dc22-2891-4d7b-8f66-745029df4b53
type=ethernet
autoconnect-retries=1
interface-name=eth0
multi-connect=1
permissions=
[ethernet]
mac-address-blacklist=
[ipv4]
dhcp-timeout=90
dns=168.63.129.16;
dns-search=
method=auto
route1=168.63.129.16/32,10.0.0.1
route2=169.254.169.254/32,10.0.0.1
[ipv6]
addr-gen-mode=eui64
dhcp-timeout=90
dns-search=
method=auto
[proxy]
3. Since there's eth0.nmconnection, NetworkManager will try to get an IP for eth0 regardless of the fact it's a slave NIC and time out
```
$ ip link show
2: kdump-eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000
link/ether 00:0d:3a:11:86:8b brd ff:ff:ff:ff:ff:ff
3: eth0: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq master kdump-eth0 state UP mode DEFAULT group default qlen 1000
```
Reported-by: Huijing Hei <hhei@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Acked-by: Kairui Song <kasong@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz1947347
Upstream: Fedora
Conflict: None
commit 1ca1b71780
Author: Coiby Xu <coxu@redhat.com>
Date: Thu Apr 8 11:44:26 2021 +0800
Implement IP netmask calculation to replace "ipcalc -m"
Recently, dracut-network drops depedency on dhcp-client which requires
ipcalc. Thus the dependency chain
"kexec-tools -> dracut-network -> dhcp-client -> ipcalc"
is broken. When NIC is configured to a static IP, kexec-tools depended
on "ipcalc -m" to get netmask. This commit implements the shell
equivalent of "ipcalc -m".
The following test code shows cal_netmask_by_prefix is consistent with
"ipcalc -m",
#!/bin/bash
. dracut-module-setup.sh
for i in {0..128}; do
mask_expected=$(ipcalc -m fe::/$i| cut -d"=" -f2)
mask_actual=$(cal_netmask_by_prefix $i "-6")
if [[ "$mask_expected" != "$mask_actual" ]]; then
echo "prefix="$i, "expected="$mask_expected, "acutal="$mask_actual
exit
fi
done
echo "IPv6 tests passed"
for i in {0..32}; do
mask_expected=$(ipcalc -m 8.8.8.8/$i| cut -d"=" -f2)
mask_actual=$(cal_netmask_by_prefix $i "")
if [[ "$mask_expected" != "$mask_actual" ]]; then
echo "prefix="$i, "expected="$mask_expected, "acutal="$mask_actual
exit
fi
done
echo "IPv4 tests passed"
i=-2
res=$(cal_netmask_by_prefix "$i" "")
if [[ $? -ne 1 ]]; then
echo "cal_netmask_by_prefix should exit when prefix<0"
exit
fi
res=$(cal_netmask_by_prefix "$i" "")
if [[ $? -ne 1 ]]; then
echo "cal_netmask_by_prefix should exit when prefix<0"
exit
fi
i=33
$(cal_netmask_by_prefix $i "")
if [[ $? -ne 1 ]]; then
echo "cal_netmask_by_prefix should exit when prefix>32 for IPv4"
exit
fi
i=129
$(cal_netmask_by_prefix $i "-6")
if [[ $? -ne 1 ]]; then
echo "cal_netmask_by_prefix should exit when prefix>128 for IPv4"
exit
fi
echo "Bad prefixes tests passed"
echo "All tests passed"
Reported-by: Jie Li <jieli@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Acked-by: Kairui Song <kasong@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz1892558
Upstream: Fedora
Conflict: None
commit 18131894b6
Author: Pingfan Liu <piliu@redhat.com>
Date: Thu Feb 4 09:45:36 2021 +0800
kdump-lib.sh: introduce functions to return recommened mem size
There is requirement to decide the recommended memory size for the current
system. And the algorithm is based on /proc/iomem, so it can align with the
algorithm used by reserve_crashkernel() in kernel.
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Acked-by: Kairui Song <kasong@redhat.com>
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Related: rhbz#1938165
Upstream: fedora
Conflict: none
commit 00785873ef
Author: Tao Liu <ltao@redhat.com>
Date: Fri Mar 19 18:07:51 2021 +0800
Fix incorrect vmcore permissions when dumped through ssh
Previously when dumping vmcore to a remote machine through ssh,
the files are created remotely and file permissions are taken
from the default umask value, which making the files accessible to
anyone on the remote machine.
This patch fixed the security issue by setting a customized umask value
before the file creation on the remote machine.
Signed-off-by: Tao Liu <ltao@redhat.com>
Acked-by: Kairui Song <kasong@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Resolves: rhbz#1938165
Upstream: fedora
Conflict: none
commit 91c802ff52
Author: Tao Liu <ltao@redhat.com>
Date: Thu Mar 18 16:52:46 2021 +0800
Fix incorrect permissions on kdump dmesg file
Also known as CVE-2021-20269. The kdump dmesg log files(kexec-dmesg.log,
vmcore-dmesg.txt) are generated by shell redirection, which take the
default umask value, making the files readable for group and others.
This patch chmod these files, making them only accessible to owner.
Signed-off-by: Tao Liu <ltao@redhat.com>
Acked-by: Kairui Song <kasong@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
