From: Aaro Koskinen <1920602@bugs.launchpad.net>
To: qemu-devel@nongnu.org
Subject: [Bug 1920602] [NEW] QEMU crash after a QuickBASIC program integer overflow
Date: Sat, 20 Mar 2021 13:08:21 -0000 [thread overview]
Message-ID: <161624570188.19824.1091833072893020317.malonedeb@wampee.canonical.com> (raw)
Public bug reported:
A trivial program compiled with QuickBASIC 4.5 with integer overflow
will crash QEMU when ran under MS-DOS 5.0 or FreeDOS 1.2:
C:\KILLER>type killer.bas
A% = VAL("99999"):PRINT A%
C:\KILLER>killer.exe
**
ERROR:../qemu-5.2.0/accel/tcg/tcg-cpus.c:541:tcg_handle_interrupt: assertion failed: (qemu_mutex_iothread_locked())
Aborted
QEMU version v5.2, compiler for ARM, and started with command line:
qemu-system-i386 -curses -cpu 486 -m 1 -drive dos.img
The same test under Ubuntu QEMU and KVM/x86_64 (QEMU emulator version
4.2.1 (Debian 1:4.2-3ubuntu6.14)) will just silently hang the QEMU. On
DOSBOX, the machine does not die and program outputs the value -31073.
The EXE to reproduce the issue is attached.
** Affects: qemu
Importance: Undecided
Status: New
** Attachment added: "KILLER.EXE"
https://bugs.launchpad.net/bugs/1920602/+attachment/5478465/+files/KILLER.EXE
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1920602
Title:
QEMU crash after a QuickBASIC program integer overflow
Status in QEMU:
New
Bug description:
A trivial program compiled with QuickBASIC 4.5 with integer overflow
will crash QEMU when ran under MS-DOS 5.0 or FreeDOS 1.2:
C:\KILLER>type killer.bas
A% = VAL("99999"):PRINT A%
C:\KILLER>killer.exe
**
ERROR:../qemu-5.2.0/accel/tcg/tcg-cpus.c:541:tcg_handle_interrupt: assertion failed: (qemu_mutex_iothread_locked())
Aborted
QEMU version v5.2, compiler for ARM, and started with command line:
qemu-system-i386 -curses -cpu 486 -m 1 -drive dos.img
The same test under Ubuntu QEMU and KVM/x86_64 (QEMU emulator version
4.2.1 (Debian 1:4.2-3ubuntu6.14)) will just silently hang the QEMU. On
DOSBOX, the machine does not die and program outputs the value -31073.
The EXE to reproduce the issue is attached.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1920602/+subscriptions
next reply other threads:[~2021-03-20 13:16 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-20 13:08 Aaro Koskinen [this message]
2021-03-20 13:14 ` [Bug 1920602] Re: QEMU crash after a QuickBASIC program integer overflow Aaro Koskinen
2021-03-20 14:44 ` Aaro Koskinen
2021-03-20 15:41 ` Aaro Koskinen
2021-05-09 20:17 ` Aaro Koskinen
2021-05-09 21:14 ` Philippe Mathieu-Daudé
2021-05-09 21:42 ` Philippe Mathieu-Daudé
2021-05-10 5:34 ` Philippe Mathieu-Daudé
2021-05-15 14:04 ` Thomas Huth
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=161624570188.19824.1091833072893020317.malonedeb@wampee.canonical.com \
--to=1920602@bugs.launchpad.net \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).