[Bug 288260] Network stack produice kernel error after updating from 13.2 14.2

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Newsgroups gmane.os.freebsd.devel.net
Message-ID <[email protected]/bugzilla/>
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=288260

Zhenlei Huang <[email protected]> changed:

           What    |Removed                     |Added
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                 CC|                            |[email protected]

--- Comment #1 from Zhenlei Huang <[email protected]> ---
Thanks for your report !

Quote one from your dmesg output,

> CURVNET_SET() recursion in hhook_run_socket() line 3700, prev in > ether_input_internal()
>     0xfffff8000a4f7040 -> 0xfffff8000a4f7040
> KDB: stack backtrace:
> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00634c16f0


The root cause is that you have enabled `VNET_DEBUG` option in the kernel build
config, KERNEL-14.2 in your case. That option is field for debugging purpose
which is useful for developers. End users will barely want to enable it. The
output is harmless but certainly will hurt performance in critical / fast path.

To **fix** it, just disable the `VNET_DEBUG` option. Happy hacking !

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