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** Changed in: qemu
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1783437
Title:
read-modify-write page faults error code has write bit unset
Status in QEMU:
Incomplete
Bug description:
Consider the attached C file, which does a read-modify-write of the
form `add [mem], reg`, where `mem` points to a non-present page. In
the resulting page fault, the W/R bit is not set, while real hardware
does set this bit.
% gcc -m32 qemu-bug1.c&& ./a.out && qemu-i386 ./a.out
page fault: addr=0x70000000 err=0x6
page fault: addr=0x70000000 err=0x4
Tested on the qemu-3.0.0-rc1 release.
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