RE: New panic in main-n253273-a52d8d4a6c6:

Rob:

I did not remove Hans earlier patch, but your “latest” patch applied and compiled with no errors.

I can now watch and control a TTY (v0) or a SSH session (pts/1) without crashing.

Anything else you would like me to try?

--mikej


From: Rob Wing [mailto:rob.fx907@gmail.com]
Sent: Monday, February 21, 2022 9:30 PM
To: Michael Jung <mikej@paymentallianceintl.com>
Cc: Hans Petter Selasky <hps@selasky.org>; freebsd-current <freebsd-current@freebsd.org>
Subject: Re: New panic in main-n253273-a52d8d4a6c6:

The previous attached patch should work for testing purposes, but it's incorrect if an error occurs.

The fhold() should be below FILEDESC_SUNLOCK(), this patch addresses that.

On Mon, Feb 21, 2022 at 5:18 PM Rob Wing <rob.fx907@gmail.com<mailto:rob.fx907@gmail.com>> wrote:
try the attached patch

On Mon, Feb 21, 2022 at 5:14 PM Michael Jung <mikej@paymentallianceintl.com<mailto:mikej@paymentallianceintl.com>> wrote:




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From: Michael Jung
Sent: Monday, February 21, 2022 9:06 PM
To: 'Hans Petter Selasky' <hps@selasky.org<mailto:hps@selasky.org>>; freebsd-current <freebsd-current@freebsd.org<mailto:freebsd-current@freebsd.org>>
Subject: RE: New panic in main-n253273-a52d8d4a6c6:

From: Hans Petter Selasky [mailto:hps@selasky.org]
Sent: Monday, February 21, 2022 8:34 PM
To: Michael Jung <mikej@paymentallianceintl.com<mailto:mikej@paymentallianceintl.com>>; freebsd-current <freebsd-current@freebsd.org<mailto:freebsd-current@freebsd.org>>
Subject: Re: New panic in main-n253273-a52d8d4a6c6:

On 2/22/22 00:42, Michael Jung wrote:
> Hi:
>
> I was trying to remember what I did that was odd when this crash occurred then it
> hit me. You can repeat this panic by doing:
>
> # watch -I -W pts/0
>
> Here is another panic that happened write after issuing "watch" for comparison.
>
> http://mail.mikej.com/core.txt.1<http://mail.mikej.com/core.txt.1>
>
> http://mail.mikej.com/info.1<http://mail.mikej.com/info.1>
>
> http://mail.mikej.com/vmcore.1<http://mail.mikej.com/vmcore.1>
>

I also need your kernel and debug kernel to fully debug this.

1) Do ssh to machine.
2) watch -i -W pts/0 (does not panic over here)

Can you explain what step 1 is? An scp ?

Refcount is -1.
f_count = 0xffffffff

f_data = 0xfffff800158b0400

In your KGDB, can you enter:

info 0xffffffff81b052d0

Does the attached patch make any difference?

--HPS


So sorry, yes step one, ssh to machine….

Even open a second console on the computer, no SSH and do “watch –I  -W v0” it panics.

Example of “watch –I –W v0” for comparison – kernel/kernel.full have not changed since .2

http://mail.mikej.com/core.txt.3<http://mail.mikej.com/core.txt.3>

http://mail.mikej.com/info.3<http://mail.mikej.com/info.3>

http://mail.mikej.com/vmcore.3<http://mail.mikej.com/vmcore.3>





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The information contained in this communication from the sender is confidential. It is intended solely for use by the recipient and others authorized to receive it. If you are not the recipient, you are hereby notified that any disclosure, copying, distribution or taking action in relation of the contents of this information is strictly prohibited and may be unlawful.

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