On Tue, 1 May 2018, Davide Marini wrote:
> First of all: thank you for the incredible work you are doing to 
> continually strengthen and improve this amazing operating system. I have 
> been a very happy and grateful user for almost ten years.
> 
> I recently installed OpenBSD 6.3 AMD64 on my new HP Z240 desktop 
> workstation and have experienced two kernel panics that led to the 
> machine being now unusable (hangs on boot). The machine has an 
> integrated Intel graphics card.
> 
> Unfortunately I am not an expert user, so all I can contribute are two
> pictures of my screen after the panics (attached).

To manually transcribe the initial kernel errors (it's just a bit of 
typing, really), from the first screen shot:

# ahci0: attempting to idle device
# ahci0: couldn't recover NCQ error, failing all outstanding commands.
# mode = 0100600, inum = 131, fs = /tmp
# panic: ffs_valloc: dup alloc

...and from the second:
# ahci0: NCQ errored slot 27 is idle (00000004 active)
# mode = 0100600, inum = 23, fs = /tmp
# panic: ffs_valloc: dup alloc

So, ahci, the disk controller, is where the first error is reported.  

This is where we need the contents of /var/run/dmesg from this box, with 
the complete dmesg output.  (Rule of thumb: when reporting *any* problem, 
include the dmesg from the box so we have some idea of the set up of the 
involved machine.)


Philip Guenther

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