View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0001135 | channel: kernel/el7 | kernel-ml | public | 2021-09-18 21:12 | 2021-09-22 09:12 |
| Reporter | dongjh | Assigned To | burakkucat | ||
| Priority | normal | Severity | feature | Reproducibility | always |
| Status | resolved | Resolution | fixed | ||
| Summary | 0001135: Missing br_netfilter module ? | ||||
| Description | For K8S installation, i need the br_netfilter module, after installing the kernel-ml.x86_64(Version 5.14.5-1) on CentOS 7.9, i failed to load the br_netfilter module.What is the problem ? [root@docker lib]# uname -a Linux docker 5.14.5-1.el7.elrepo.x86_64 #1 SMP Thu Sep 16 09:03:54 EDT 2021 x86_64 x86_64 x86_64 GNU/Linux [root@docker lib]# [root@docker ~]# lsmod|grep br_netfilter [root@docker ~]# [root@docker ~]# modprobe br_netfilter [root@docker ~]# [root@docker ~]# lsmod|grep br_netfilter [root@docker ~]# [root@docker ~]# modprobe -r br_netfilter modprobe: FATAL: Module br_netfilter is builtin. [root@docker ~]# [root@docker lib]# cat /proc/modules|grep br_netfilter [root@docker lib]# [root@docker 5.14.5-1.el7.elrepo.x86_64]# cat modules.builtin|grep filter kernel/net/netfilter/x_tables.ko kernel/net/netfilter/xt_tcpudp.ko kernel/net/bridge/br_netfilter.ko Does it mean the br_netfilter has been built into the kernel and can not be loaded dynamically ？ | ||||
| Tags | No tags attached. | ||||
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[root@docker 5.14.5-1.el7.elrepo.x86_64]# modinfo br_netfilter modinfo: ERROR: Module br_netfilter not found. If it has been builtin, how can i query the module information ? |
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Hi, Yes, br_netfilter has been built into the kernel rather than as a module. You can not query modules that have been built in with modinfo (or other tools provided by kmod) as these tools only work with dynamically loadable modules, not the core kernel. What is it that you are unable to achieve with br_netfilter built into the kernel? The functionality should be identical to that of a dynamically loaded module - the only thing you can not do is unload the code from the running kernel. We can look at building br_netfilter as a module rather than built in, which would be more in keeping with configuration the el7 distro kernel. |
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I have now queued an adjustment of the kernel-{lt|ml} configuration, from CONFIG_BRIDGE_NETFILTER=y to CONFIG_BRIDGE_NETFILTER=m, which will occur with the next builds of the kernel-{lt|ml} package sets. |
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The recently released kernel-lt [1] and kernel-ml [2] package sets, for el7, now have the configuration option CONFIG_BRIDGE_NETFILTER=m set. Now closing as "resolved/fixed". [1] https://lists.elrepo.org/pipermail/elrepo/2021-September/005855.html [2] https://lists.elrepo.org/pipermail/elrepo/2021-September/005857.html |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2021-09-18 21:12 | dongjh | New Issue | |
| 2021-09-18 21:12 | dongjh | Status | new => assigned |
| 2021-09-18 21:12 | dongjh | Assigned To | => burakkucat |
| 2021-09-18 21:18 | dongjh | Note Added: 0007838 | |
| 2021-09-19 06:58 | pperry | Note Added: 0007840 | |
| 2021-09-19 06:59 | pperry | Note Edited: 0007840 | |
| 2021-09-19 11:48 | burakkucat | Note Added: 0007845 | |
| 2021-09-22 09:12 | burakkucat | Status | assigned => resolved |
| 2021-09-22 09:12 | burakkucat | Resolution | open => fixed |
| 2021-09-22 09:12 | burakkucat | Note Added: 0007871 |
