qemu crashes with isa_bus_dma: Assertion `!bus->dma[0] && !bus->dma[1]' failed

[nasastry]

Steps to re-produce:

1. Get the device-crash-test script from qemu git under scripts folder.
2. Run the script with default qemu binary.
   ./device-crash-test /usr/bin/qemu-system-ppc64
3. Check the output
   ...

INFO: running test case: machine=prep binary=/usr/bin/qemu-system-ppc64 device=i82374 accel=tcg
WARNING: qemu received signal -6: /usr/bin/qemu-system-ppc64 -chardev socket,id=mon,path=/var/tmp/qemu-49183-monitor.sock -mon chardev=mon,mode=control -display none -vga none -S -machine prep,accel=tcg -device i82374
CRITICAL: failed: machine=prep binary=/usr/bin/qemu-system-ppc64 device=i82374 accel=tcg
CRITICAL: cmdline: /usr/bin/qemu-system-ppc64 -S -machine prep,accel=tcg -device i82374
CRITICAL: log: qemu-system-ppc64: hw/isa/isa-bus.c:110: isa_bus_dma: Assertion `!bus->dma[0] && !bus->dma[1]' failed.
CRITICAL: exit code: -6

cde:info Mirrored with LTC bug #159873 </cde:info>

[nasastry]

One more way to re-produce the same error

INFO: running test case: machine=40p binary=/usr/bin/qemu-system-ppc64 device=i82374 accel=tcg
WARNING: qemu received signal -6: /usr/bin/qemu-system-ppc64 -chardev socket,id=mon,path=/var/tmp/qemu-49183-monitor.sock -mon chardev=mon,mode=control -display none -vga none -S -machine 40p,accel=tcg -device i82374
CRITICAL: failed: machine=40p binary=/usr/bin/qemu-system-ppc64 device=i82374 accel=tcg
CRITICAL: cmdline: /usr/bin/qemu-system-ppc64 -S -machine 40p,accel=tcg -device i82374
CRITICAL: log: pulseaudio: pa_context_connect() failed
CRITICAL: log: pulseaudio: Reason: Connection refused
CRITICAL: log: pulseaudio: Failed to initialize PA contextaudio: Could not init `pa' audio driver
CRITICAL: log: ALSA lib confmisc.c:767:(parse_card) cannot find card '0'
CRITICAL: log: ALSA lib conf.c:4528:(_snd_config_evaluate) function snd_func_card_driver returned error: No such file or directory
CRITICAL: log: ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings
CRITICAL: log: ALSA lib conf.c:4528:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory
CRITICAL: log: ALSA lib confmisc.c:1246:(snd_func_refer) error evaluating name
CRITICAL: log: ALSA lib conf.c:4528:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
CRITICAL: log: ALSA lib conf.c:5007:(snd_config_expand) Evaluate error: No such file or directory
CRITICAL: log: ALSA lib pcm.c:2501:(snd_pcm_open_noupdate) Unknown PCM default
CRITICAL: log: qemu-system-ppc64: hw/isa/isa-bus.c:110: isa_bus_dma: Assertion `!bus->dma[0] && !bus->dma[1]' failed.
CRITICAL: exit code: -6	

[cdeadmin]

------- Comment From alexey@au1.ibm.com 2017-10-26 05:05:27 EDT-------
I posted a patch to replace assert with error+exit but in general we only support pseries machines for a guest and powernv for a host and ISA is not supported on neither.

[cdeadmin]

------- Comment From seg@us.ibm.com 2018-05-25 12:41:21 EDT-------
What's the status here?

[cdeadmin]

------- Comment From alexey@au1.ibm.com 2018-05-29 00:13:15 EDT-------
The topic is brought up in the qemu-devel@ list from time to time, some work is happening there but since this use of QEMU is not really supported by anyone, it is hard to tell when this is going to be fixed.

[cdeadmin]

------- Comment From seg@us.ibm.com 2018-06-01 12:00:09 EDT-------
OK. I think there is no point in keeping this open. If this becomes an important problem for someone, we can reopen it.

[cdeadmin]

------- Comment From venkatb3@in.ibm.com 2018-06-12 02:24:42 EDT-------
[root@ltc-fire4 scripts]# /usr/bin/qemu-system-ppc64 -display none -vga none -S -machine prep,accel=tcg -device i82374
qemu-system-ppc64: -device i82374: DMA already initialized on ISA bus