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deep thoughts

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Daniel Barlow 2024-02-11 09:10:50 +00:00
parent bbce605a14
commit 6c61d88a3a
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THOUGHTS.txt
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@ -3952,3 +3952,47 @@ I can actually use it as a CPE. This means
- would be quite cool to run sniproxy instead of forwarding to - would be quite cool to run sniproxy instead of forwarding to
loaclhost (extra credit) loaclhost (extra credit)
Sat Feb 10 12:41:12 GMT 2024
s6-linux-init version 1.1.2.0
nfnetlink: module verification failed: signature and/or required key missing - tainting kernel
------------[ cut here ]------------
kernel BUG at net/wireless/core.h:125!
Internal error: Oops - BUG: 0 [#1] SMP ARM
Modules linked in: cfg80211(E+) nfnetlink(E)
CPU: 0 PID: 197 Comm: insmod Tainted: G E 6.7.4 #1
Hardware name: Marvell Armada 380/385 (Device Tree)
PC is at cfg80211_netdev_notifier_call+0x2cc/0x3e0 [cfg80211]
LR is at call_netdevice_register_net_notifiers+0x4c/0xec
pc : [<bf010024>] lr : [<c0672e30>] psr: 60000013
sp : f0ba5c10 ip : fffffffb fp : c328df00
r10: c15c4170 r9 : c328df00 r8 : 00000000
r7 : 00000000 r6 : bf04c620 r5 : c10c9000 r4 : c11ff414
r3 : 00000000 r2 : f0ba5df4 r1 : 00000005 r0 : bf04c620
Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
Control: 10c5387d Table: 0320804a DAC: 00000051
R
cfg80211_netdev_notifier_call [cfg80211] from call_netdevice_register_net_notifiers+0x4c/0xec
setenv omnia_reset 1; run bootcmd_rescue
Sat Feb 10 18:23:54 GMT 2024
ARGH KERNEL
You can't define CONFIG_NETFILTER=y in a monolithic kernel and expect
later to separately build some modules that use it, because there are
a bunch of symbols that only get defined if certain other CONFIG
options are set at the time that the monolithic kernel is built.
https://github.com/torvalds/linux/blob/master/net/netfilter/core.c#L689
Another example is
https://github.com/torvalds/linux/blob/master/include/linux/netdevice.h#L160
- if you decide after building the kernel that you're going to build
some wireless modules, you can't do that without rebuilding the kernel
so that it knows to expect them
The moral of the story seems to be: if you have a compiled Linux kernel source tree and you change some symbol from "is not set" to m and then run make modules, you cannot in general expect that newly compiled module to work.