NetBSD Problem Report #57289

From www@netbsd.org  Fri Mar 24 19:02:47 2023
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Date: Fri, 24 Mar 2023 19:02:45 +0000 (UTC)
From: mike@papersolve.com
Reply-To: mike@papersolve.com
To: gnats-bugs@NetBSD.org
Subject: qemu-system-sparc64 virtio-net-pci device doesn't work on NetBSD 10.0 - locks up
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>Number:         57289
>Category:       port-sparc64
>Synopsis:       qemu-system-sparc64 virtio-net-pci device doesn't work on NetBSD 10.0 - locks up
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-sparc64-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Mar 24 19:05:00 +0000 2023
>Last-Modified:  Sat Mar 25 13:30:01 +0000 2023
>Originator:     Mike Russo
>Release:        10.0_BETA
>Organization:
>Environment:
NetBSD  10.0_BETA NetBSD 10.0_BETA (GENERIC) #0: Mon Mar 20 17:25:14 UTC 2023  mkrepro@mkrepro.NetBSD.org:/usr/src/sys/arch/sparc64/compile/GENERIC sparc64
>Description:
I am attempting to use virtio-net driver with qemu-system-sparc64; in previous versions of NetBSD the device is detected but does not get configured.  In 10.0 BETA that I downloaded today, it shows up but hangs when trying to configure it.  

Command line used to start qemu:
qemu-system-sparc64 -cdrom ./NetBSD-10.0_BETA-sparc64.iso -m 2048 -net nic,model=virtio-net-pci -net user -nographic -boot d

(used latest qemu compiled from source today)

Quit install, it is detected:

# dmesg|grep virtio
[     1.000000] virtio0 at pci2 dev 0 function 0
[     1.000000] virtio0: network device (id 1, rev. 0x00)
[     1.000000] vioif0 at virtio0: features: 0x31870020<EVENT_IDX,INDIRECT_DESC,NOTIFY_ON_EMPTY,CTRL_MAC,CTRL_RX,CTRL_VQ,STATUS,MAC>
[     1.000000] virtio0: allocated 20480 byte for virtqueue 0 for rx0, size 256
[     1.000000] virtio0: using 8192 byte (512 entries) indirect descriptors
[     1.000000] virtio0: allocated 81920 byte for virtqueue 1 for tx0, size 256
[     1.000000] virtio0: using 69632 byte (4352 entries) indirect descriptors
[     1.000000] virtio0: allocated 8192 byte for virtqueue 2 for control, size 64
[     1.000000] virtio0: interrupting at ivec 3010


Shows as interface:
# ifconfig 
vioif0: flags=0x8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
        ec_capabilities=0x1<VLAN_MTU>
        ec_enabled=0
        address: 52:54:00:12:34:56
lo0: flags=0x8048<LOOPBACK,RUNNING,MULTICAST> mtu 33112
        status: active

Hangs when trying to configure:
# ifconfig vioif0 10.0.2.15/24

//machine locks up here
>How-To-Repeat:
boot NetBSD ISO as shown in description and attempt to configure interface
>Fix:

>Audit-Trail:
From: Martin Husemann <martin@duskware.de>
To: gnats-bugs@netbsd.org
Cc: 
Subject: Re: port-sparc64/57289: qemu-system-sparc64 virtio-net-pci device
 doesn't work on NetBSD 10.0 - locks up
Date: Sat, 25 Mar 2023 14:25:26 +0100

 On Fri, Mar 24, 2023 at 07:05:01PM +0000, mike@papersolve.com wrote:
 > Hangs when trying to configure:
 > # ifconfig vioif0 10.0.2.15/24
 > 
 > //machine locks up here

 Is that reproducable? sparc64 hangs for me on Qemu randomly, just trying
 to make sure if this is an instance of the same (qemu) issue.

 Can you send break on the emulated serial console and talk to ddb?

 Martin

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