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List: freebsd-current
Subject: Re: New panic in main-n253273-a52d8d4a6c6:
From: Rob Wing <rob.fx907 () gmail ! com>
Date: 2022-02-22 18:43:46
Message-ID: CAF3+n_f3x2ZVg6_SuecgMfurV-46X+VF8UVhAgd6M9jPSga5eA () mail ! gmail ! com
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Hey Mike,
Should be fixed in commit 0a2f498234023008d9a3b13ad7fc8fd81d384bab
<https://cgit.freebsd.org/src/commit/?id=0a2f498234023008d9a3b13ad7fc8fd81d384bab>
Thanks for the report
-Rob
On Mon, Feb 21, 2022 at 7:48 PM Rob Wing <rob.fx907@gmail.com> wrote:
> Think that's it...thanks for testing for the patch.
>
> I opened up https://reviews.freebsd.org/D34335 for review.
>
> -Rob
>
> On Mon, Feb 21, 2022 at 6:05 PM Michael Jung <
> mikej@paymentallianceintl.com> wrote:
>
>> 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> wrote:
>>
>> try the attached patch
>>
>>
>>
>> On Mon, Feb 21, 2022 at 5:14 PM Michael Jung <
>> mikej@paymentallianceintl.com> wrote:
>>
>>
>>
>>
>>
>>
>>
>> CONFIDENTIALITY NOTE: This message is intended only for the use
>> of the individual or entity to whom it is addressed and may
>> contain information that is privileged, confidential, and
>> exempt from disclosure under applicable law. If the reader
>> of this message is not the intended recipient, you are hereby
>> notified that any dissemination, distribution or copying
>> of this communication is strictly prohibited. If you have
>> received this transmission in error, please notify us by
>> telephone at (502) 212-4000 or notify us at: PAI, Dept. 99,
>> 2101 High Wickham Place, Suite 101, Louisville, KY 40245
>>
>>
>> *From:* Michael Jung
>> *Sent:* Monday, February 21, 2022 9:06 PM
>> *To:* 'Hans Petter Selasky' <hps@selasky.org>; freebsd-current <
>> freebsd-current@freebsd.org>
>> *Subject:* RE: New panic in main-n253273-a52d8d4a6c6:
>>
>>
>>
>> *From:* Hans Petter Selasky [mailto:hps@selasky.org <hps@selasky.org>]
>> *Sent:* Monday, February 21, 2022 8:34 PM
>> *To:* Michael Jung <mikej@paymentallianceintl.com>; freebsd-current <
>> 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/info.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/info.3
>>
>>
>>
>> http://mail.mikej.com/vmcore.3
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> *Disclaimer*
>>
>> 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.
>>
>> This email has been scanned for viruses and malware, and may have been
>> automatically archived by Mimecast, a leader in email security and cyber
>> resilience. Mimecast integrates email defenses with brand protection,
>> security awareness training, web security, compliance and other essential
>> capabilities. Mimecast helps protect large and small organizations from
>> malicious activity, human error and technology failure; and to lead the
>> movement toward building a more resilient world. To find out more, visit
>> our website.
>>
>>
>>
>> *Disclaimer*
>>
>> 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.
>>
>> This email has been scanned for viruses and malware, and may have been
>> automatically archived by Mimecast, a leader in email security and cyber
>> resilience. Mimecast integrates email defenses with brand protection,
>> security awareness training, web security, compliance and other essential
>> capabilities. Mimecast helps protect large and small organizations from
>> malicious activity, human error and technology failure; and to lead the
>> movement toward building a more resilient world. To find out more, visit
>> our website.
>>
>
[Attachment #3 (text/html)]
<div dir="ltr"><div>Hey Mike,</div><div><br></div><div>Should be fixed in <a \
href="https://cgit.freebsd.org/src/commit/?id=0a2f498234023008d9a3b13ad7fc8fd81d384bab">commit \
0a2f498234023008d9a3b13ad7fc8fd81d384bab</a></div><div><br></div><div>Thanks for the \
report</div><div><br></div><div>-Rob<br></div></div><br><div class="gmail_quote"><div \
dir="ltr" class="gmail_attr">On Mon, Feb 21, 2022 at 7:48 PM Rob Wing <<a \
href="mailto:rob.fx907@gmail.com">rob.fx907@gmail.com</a>> \
wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px \
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div \
dir="ltr"><div>Think that's it...thanks for testing for the \
patch.<br></div><div><br></div><div>I opened up <a \
href="https://reviews.freebsd.org/D34335" \
target="_blank">https://reviews.freebsd.org/D34335</a> for \
review.<br></div><div><br></div><div>-Rob<br></div></div><br><div \
class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Feb 21, 2022 at 6:05 PM \
Michael Jung <<a href="mailto:mikej@paymentallianceintl.com" \
target="_blank">mikej@paymentallianceintl.com</a>> wrote:<br></div><blockquote \
class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid \
rgb(204,204,204);padding-left:1ex">
<div lang="EN-US">
<div>
<p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)">Rob:<u></u><u></u></span></p>
<p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"><u></u> \
<u></u></span></p> <p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)">I \
did not remove Hans earlier patch, but your "latest" patch applied and compiled with \
no errors.<u></u><u></u></span></p> <p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"><u></u> \
<u></u></span></p> <p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)">I \
can now watch and control a TTY (v0) or a SSH session (pts/1) without \
crashing.<u></u><u></u></span></p> <p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"><u></u> \
<u></u></span></p> <p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)">Anything \
else you would like me to try?<u></u><u></u></span></p> <p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"><u></u> \
<u></u></span></p> <p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)">--mikej<u></u><u></u></span></p>
<p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"><u></u> \
<u></u></span></p> <p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"><u></u> \
<u></u></span></p> <p class="MsoNormal"><b><span \
style="font-size:11pt;font-family:"Calibri",sans-serif">From:</span></b><span \
style="font-size:11pt;font-family:"Calibri",sans-serif"> Rob Wing \
[mailto:<a href="mailto:rob.fx907@gmail.com" target="_blank">rob.fx907@gmail.com</a>] \
<br> <b>Sent:</b> Monday, February 21, 2022 9:30 PM<br>
<b>To:</b> Michael Jung <<a href="mailto:mikej@paymentallianceintl.com" \
target="_blank">mikej@paymentallianceintl.com</a>><br> <b>Cc:</b> Hans Petter \
Selasky <<a href="mailto:hps@selasky.org" target="_blank">hps@selasky.org</a>>; \
freebsd-current <<a href="mailto:freebsd-current@freebsd.org" \
target="_blank">freebsd-current@freebsd.org</a>><br> <b>Subject:</b> Re: New panic \
in main-n253273-a52d8d4a6c6:<u></u><u></u></span></p> <p class="MsoNormal"><u></u> \
<u></u></p> <div>
<div>
<p class="MsoNormal">The previous attached patch should work for testing purposes, \
but it's incorrect if an error occurs.<u></u><u></u></p> </div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">The fhold() should be below FILEDESC_SUNLOCK(), this patch \
addresses that.<u></u><u></u></p> </div>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<div>
<p class="MsoNormal">On Mon, Feb 21, 2022 at 5:18 PM Rob Wing <<a \
href="mailto:rob.fx907@gmail.com" target="_blank">rob.fx907@gmail.com</a>> \
wrote:<u></u><u></u></p> </div>
<blockquote style="border-color:currentcolor currentcolor currentcolor \
rgb(204,204,204);border-style:none none none solid;border-width:medium medium medium \
1pt;padding:0in 0in 0in 6pt;margin-left:4.8pt;margin-right:0in"> <div>
<p class="MsoNormal">try the attached patch<u></u><u></u></p>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<div>
<p class="MsoNormal">On Mon, Feb 21, 2022 at 5:14 PM Michael Jung <<a \
href="mailto:mikej@paymentallianceintl.com" \
target="_blank">mikej@paymentallianceintl.com</a>> wrote:<u></u><u></u></p> </div>
<blockquote style="border-color:currentcolor currentcolor currentcolor \
rgb(204,204,204);border-style:none none none solid;border-width:medium medium medium \
1pt;padding:0in 0in 0in 6pt;margin-left:4.8pt;margin-right:0in"> <div>
<div>
<p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"> \
</span><u></u><u></u></p> <p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"> \
</span><u></u><u></u></p> <div>
<p><span style="font-size:10pt;font-family:"Arial",sans-serif"> \
<u></u><u></u></span></p> <div style="border-color:rgb(102,102,102) \
currentcolor;border-style:solid none;border-width:1pt medium;padding:4pt 0in"> <p \
class="MsoNormal" style="margin-bottom:12pt"><span \
style="font-size:7.5pt;font-family:"Verdana",sans-serif">CONFIDENTIALITY \
NOTE: This message is intended only for the use<br> of the individual or entity to \
whom it is addressed and may <br> contain information that is privileged, \
confidential, and <br> exempt from disclosure under applicable law. If the reader \
<br> of this message is not the intended recipient, you are hereby <br>
notified that any dissemination, distribution or copying <br>
of this communication is strictly prohibited. If you have <br>
received this transmission in error, please notify us by <br>
telephone at (502) 212-4000 or notify us at: PAI, Dept. 99, <br>
2101 High Wickham Place, Suite 101, Louisville, KY 40245<br>
<br>
<br>
<u></u><u></u></span></p>
</div>
</div>
<div>
<div style="border-style:solid none none;border-width:1pt medium medium;padding:3pt \
0in 0in;border-color:currentcolor"> <p class="MsoNormal"><b><span \
style="font-size:11pt;font-family:"Calibri",sans-serif">From:</span></b><span \
style="font-size:11pt;font-family:"Calibri",sans-serif"> Michael Jung <br>
<b>Sent:</b> Monday, February 21, 2022 9:06 PM<br>
<b>To:</b> 'Hans Petter Selasky' <<a href="mailto:hps@selasky.org" \
target="_blank">hps@selasky.org</a>>; freebsd-current <<a \
href="mailto:freebsd-current@freebsd.org" \
target="_blank">freebsd-current@freebsd.org</a>><br> <b>Subject:</b> RE: New panic \
in main-n253273-a52d8d4a6c6:</span><u></u><u></u></p> </div>
</div>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal"><b><span \
style="font-size:11pt;font-family:"Calibri",sans-serif">From:</span></b><span \
style="font-size:11pt;font-family:"Calibri",sans-serif"> Hans Petter \
Selasky [<a href="mailto:hps@selasky.org" target="_blank">mailto:hps@selasky.org</a>] \
<br> <b>Sent:</b> Monday, February 21, 2022 8:34 PM<br>
<b>To:</b> Michael Jung <<a href="mailto:mikej@paymentallianceintl.com" \
target="_blank">mikej@paymentallianceintl.com</a>>; freebsd-current <<a \
href="mailto:freebsd-current@freebsd.org" \
target="_blank">freebsd-current@freebsd.org</a>><br> <b>Subject:</b> Re: New panic \
in main-n253273-a52d8d4a6c6:</span><u></u><u></u></p> <p class="MsoNormal"> \
<u></u><u></u></p> <p class="MsoNormal">On 2/22/22 00:42, Michael Jung wrote:<br>
> Hi:<br>
> <br>
> I was trying to remember what I did that was odd when this crash occurred then \
it<br> > hit me. You can repeat this panic by doing:<br>
> <br>
> # watch -I -W pts/0<br>
> <br>
> Here is another panic that happened write after issuing "watch" for \
comparison.<br> > <br>
> <a href="http://mail.mikej.com/core.txt.1" target="_blank">
http://mail.mikej.com/core.txt.1</a><br>
> <br>
> <a href="http://mail.mikej.com/info.1" target="_blank">
http://mail.mikej.com/info.1</a><br>
> <br>
> <a href="http://mail.mikej.com/vmcore.1" target="_blank">
http://mail.mikej.com/vmcore.1</a><br>
> <br>
<br>
I also need your kernel and debug kernel to fully debug this.<br>
<br>
1) Do ssh to machine.<br>
2) watch -i -W pts/0 (does not panic over here)<br>
<br>
Can you explain what step 1 is? An scp ?<br>
<br>
Refcount is -1.<br>
f_count = 0xffffffff<br>
<br>
f_data = 0xfffff800158b0400<br>
<br>
In your KGDB, can you enter:<br>
<br>
info 0xffffffff81b052d0<br>
<br>
Does the attached patch make any difference?<br>
<br>
--HPS<u></u><u></u></p>
<p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"> \
</span><u></u><u></u></p> <p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"> \
</span><u></u><u></u></p> <p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)">So \
sorry, yes step one, ssh to machine…. </span><u></u><u></u></p>
<p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"> \
</span><u></u><u></u></p> <p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)">Even \
open a second console on the computer, no SSH and do "watch –I -W v0" it \
panics.</span><u></u><u></u></p> <p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"> \
</span><u></u><u></u></p> <p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)">Example \
of "watch –I –W v0" for comparison – kernel/kernel.full have not changed since \
.2</span><u></u><u></u></p> <p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"> \
</span><u></u><u></u></p> <p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"><a \
href="http://mail.mikej.com/core.txt.3" \
target="_blank">http://mail.mikej.com/core.txt.3</a></span><u></u><u></u></p> <p \
class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"> \
</span><u></u><u></u></p> <p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"><a \
href="http://mail.mikej.com/info.3" \
target="_blank">http://mail.mikej.com/info.3</a></span><u></u><u></u></p> <p \
class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"> \
</span><u></u><u></u></p> <p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"><a \
href="http://mail.mikej.com/vmcore.3" \
target="_blank">http://mail.mikej.com/vmcore.3</a></span><u></u><u></u></p> <p \
class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"> \
</span><u></u><u></u></p> <p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"> \
</span><u></u><u></u></p> <p class="MsoNormal"><span \
style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"> \
</span><u></u><u></u></p> </div>
<p class="MsoNormal" style="margin-bottom:12pt"><u></u> <u></u></p>
<p><b><span style="font-size:10pt;font-family:"Verdana",sans-serif;color:rgb(102,102,102)">Disclaimer</span></b><span \
style="font-size:10pt;font-family:"Verdana",sans-serif;color:rgb(102,102,102)"><u></u><u></u></span></p>
<p><span style="font-size:8pt;font-family:"Verdana",sans-serif;color:rgb(102,102,102)">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.<br> <br>
This email has been scanned for viruses and malware, and may have been automatically \
archived by Mimecast, a leader in email security and cyber resilience. Mimecast \
integrates email defenses with brand protection, security awareness training, web \
security, compliance and other essential capabilities. Mimecast helps protect large \
and small organizations from malicious activity, human error and technology failure; \
and to lead the movement toward building a more resilient world. To find out more, \
visit our website.<u></u><u></u></span></p> </div>
</blockquote>
</div>
</blockquote>
</div>
</div>
<br><br><p style="font-family:Verdana;font-size:10pt;color:rgb(102,102,102)"><b>Disclaimer</b></p><p \
style="font-family:Verdana;font-size:8pt;color:rgb(102,102,102)">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.<br><br>This email has been scanned for viruses and malware, and \
may have been automatically archived by Mimecast, a leader in email security and \
cyber resilience. Mimecast integrates email defenses with brand protection, security \
awareness training, web security, compliance and other essential capabilities. \
Mimecast helps protect large and small organizations from malicious activity, human \
error and technology failure; and to lead the movement toward building a more \
resilient world. To find out more, visit our website.</p></div> </blockquote></div>
</blockquote></div>
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