NetBSD Problem Report #56036

From bsiegert@netbsd.org  Thu Mar  4 20:17:52 2021
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Date: Thu,  4 Mar 2021 20:17:51 +0000 (UTC)
From: bsiegert@gmail.com
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To: gnats-bugs@NetBSD.org
Subject: kernel panic in urtwn driver
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>Number:         56036
>Category:       kern
>Synopsis:       kernel panic in urtwn driver
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    kern-bug-people
>State:          closed
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Mar 04 20:20:00 +0000 2021
>Closed-Date:    Sun Aug 08 09:04:31 +0000 2021
>Last-Modified:  Sun Aug 08 09:04:31 +0000 2021
>Originator:     bsiegert@gmail.com
>Release:        NetBSD 9.99.80
>Organization:
	The NetBSD Foundation
>Environment:
System: NetBSD meguro.bentsukun.ch NetBSD 9.99.80 (SPLEEN64) #4: Sat Feb 27 21:58:36 CET 2021
Architecture: aarch64
Machine: evbarm
>Description:
In a recent -current kernel on a Pinebook Pro, I have been seeing regular
kernel panics when using an urtwn USB Wi-Fi stick.

[     3.559238] urtwn0 at uhub6 port 1
[     3.559238] urtwn0: Realtek (0x0bda) 802.11n WLAN Adapter (0x8176), rev 2.00/2.00, addr 1
[     3.569239] urtwn0: MAC/BB RTL8188CUS, RF 6052 1T1R, address a0:f3:c1:0f:44:d0
[     3.569239] urtwn0: 1 rx pipe, 2 tx pipes

The panic is:

kernel diagnostic assertion "(from->m_flags & M_PKTHDR) != 0" failed: file "/usr/src/sys/kern/uipc_mbuf.c", line 1799

Full stack trace at https://photos.app.goo.gl/a4Hgn2NdpzjAVJ8k8

>How-To-Repeat:
Use NetBSD 9.99.80 on Pinebook Pro with a TP-LINK USB Wireless adapter.
FWIW, this does not occur with a 9.99.76 snapshot.
>Fix:
n/a

>Release-Note:

>Audit-Trail:
From: "David H. Gutteridge" <david@gutteridge.ca>
To: gnats-bugs@netbsd.org
Cc: 
Subject: Re: kern/56036: kernel panic in urtwn driver
Date: Thu, 04 Mar 2021 20:11:57 -0500

 Is it possible this is a duplicate of kern/56029?

 Regards,

 Dave


From: Benny Siegert <bsiegert@gmail.com>
To: gnats-bugs@netbsd.org
Cc: kern-bug-people@netbsd.org, gnats-admin@netbsd.org, netbsd-bugs@netbsd.org
Subject: Re: kern/56036: kernel panic in urtwn driver
Date: Fri, 5 Mar 2021 08:55:23 +0100

 On Fri, Mar 5, 2021 at 2:15 AM David H. Gutteridge <david@gutteridge.ca> wrote:
 >  Is it possible this is a duplicate of kern/56029?

 Very much a possibility. I will build a new kernel from HEAD and report back.

 -- 
 Benny

State-Changed-From-To: open->closed
State-Changed-By: bsiegert@NetBSD.org
State-Changed-When: Sun, 08 Aug 2021 09:04:31 +0000
State-Changed-Why:
56029 is fixed. I have not seen ths is issue reoccur.


>Unformatted:

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