spice reports memslot too big then closes qemu

[ghost]

Problem description
i'm trying to have the good qemu audio quality from guest via spice audiodev and proxy it through aspice, somehow qemu crashes with memslot errors when -spice is specified

Steps to Reproduce

1. Install qemu-system-x86-64-headless
2. run qemu command with:

qemu-system-x86_64 -spice port=5901,disable-ticketing

Expected Behavior
It should run without issues

Additional information

Application version:
0.117
Packages CPU architecture:
aarch64
Subscribed repositories:
# sources.list
deb https://deb.kcubeterm.me/termux-main/ stable main
# x11-repo (sources.list.d/x11.list)
deb https://packages.termux.org/apt/termux-x11 x11 main
# game-repo (sources.list.d/game.list)
deb https://packages.termux.org/apt/termux-games games stable
# unstable-repo (sources.list.d/unstable.list)
deb https://packages.termux.org/apt/termux-unstable unstable main
# root-repo (sources.list.d/root.list)
deb https://packages.termux.org/apt/termux-root root stable
# science-repo (sources.list.d/science.list)
deb https://packages.termux.org/apt/termux-science science stable
Updatable packages:
All packages up to date
Android version:
11
Kernel build information:
Linux localhost 4.14.180-perf+ #1 SMP PREEMPT Tue Jun 22 11:10:36 CST 2021 aarch64 Android
Device manufacturer:
OPPO
Device model:
CPH1933

[mjuned47]

-spice only this argument was specified ?
I haven't faced any issue with spice.
My termux app version : 0.101

[ghost]

@mjuned47 not only that, but i was using spice audiodev to get good audio quality, here is my argument should look like

-audiodev spice,id=snd0 -soundhw sb16 -spice port=5901,disable-ticketing

then it got errors regarding memslot error

[Ilya114]

I'm a newbie here, but I realized that my bug report was a duplicate and was sent here. Is qemu spice not working in termux?

[ghost]

I just installed 32-bit Termux app from actions artifacts page. seems QEMU with spice works but not arm64. seems has something to do with it

[Clockiscool1234]

where do you get the termux 32bit app?

[evren320]

i get this error with:
qemu-system-i386 -device qxl-vga

Using anything other than qxl-vga works fine

[mjuned47]

I got the same issue , but not on older version of android (10>). And i don't know how to produce log can you help? @xtkoba

[zavocc]

I have tested other QEMU guest targets (on arm64 Android 11 host) and they do seem to work fine with SPICE without triggering memslot too big errors with -spice port=5901,disable-ticketing argument.

• qemu-system-riscv(32/64)
• qemu-system-arm(aarch64)

! qemu-system-m68k is untested

But not on

• qemu-system-ppc(64)
• qemu-system-i386(x86_64)

[mjuned47]

Can i debug on this in termux to help developer ?

[truboxl]

Any patches that fix the issue are welcomed. You don't have to explicit ask permission to help since the issue is already labelled with help wanted.

[spz2020]

Is there any news?

[zavocc]

This has something to do with android's libc. Which using qemu spice in proot distros seem to work fine regardless.

Strace output (strace -o logs.txt qemu-system-x86_64 -spice port=5901) in case anyone needs it
logs.txt

Looking at the end of the log file, it seems to be related to malloc in bionic libc which causes spice to fail to create a server