graphic: 0.865
other: 0.815
instruction: 0.800
device: 0.715
semantic: 0.684
mistranslation: 0.634
vnc: 0.625
network: 0.617
socket: 0.609
boot: 0.466
assembly: 0.337
KVM: 0.209

read-modify-write page faults error code has write bit unset

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.



The QEMU project is currently considering to move its bug tracking to
another system. For this we need to know which bugs are still valid
and which could be closed already. Thus we are setting older bugs to
"Incomplete" now.

If you still think this bug report here is valid, then please switch
the state back to "New" within the next 60 days, otherwise this report
will be marked as "Expired". Or please mark it as "Fix Released" if
the problem has been solved with a newer version of QEMU already.

Thank you and sorry for the inconvenience.


[Expired for QEMU because there has been no activity for 60 days.]