Re: _msgbufp vs msgbufp in the kernel - no symbols for dmesg -N ?

[Marcin Cieslak]

On Wed, 9 Sep 2026, Navdeep Parhar wrote:

On 9/9/26 5:56 AM, Marcin Cieslak wrote:

I have noticed that most of the tools like dmesg, vmcore, ps
do not seem to work on my amd64 minidump kernel core dumps anymore.

I noticed that those tools expect C-mangled symbol names ("_msgbufp")
but they are simply not available:

dmesg -N /boot/kernel/kernel -M /big/crash/ieee80211_sta_join/vmcore.7

dmesg: /boot/kernel/kernel: msgbufp not found

(the message is misleading, dmesg looks for _msgbufp)

nm /boot/kernel/kernel |grep msgbufp

ffffffff8210b1d0 B msgbufp

What exact revision of main is this?  Do you have cdfc673811ac?

various patches on to of 067ae9850f05a27239c28ae5819e4016e997cff2, will rebase, 
thank you!

Marcin

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