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[Bug 1917184] Re: qemu-user vm86() segfaults handling interrupt with ss:
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From: |
Jeffrey |
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Subject: |
[Bug 1917184] Re: qemu-user vm86() segfaults handling interrupt with ss:sp in same page as cs:ip |
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Date: |
Fri, 14 May 2021 04:06:34 -0000 |
Bug still present in latest master
** Changed in: qemu
Status: Incomplete => New
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https://bugs.launchpad.net/bugs/1917184
Title:
qemu-user vm86() segfaults handling interrupt with ss:sp in same page
as cs:ip
Status in QEMU:
New
Bug description:
When using qemu-i386 to run a program that uses vm86(), if the vm86
code calls an interrupt while cs:ip and ss:sp both point within the
same page, do_int tries to write to the page while it is not writable,
causing a segfault.
qemu version 5.2.0, x86-64 host.
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