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. ** Changed in: qemu Status: New => Incomplete -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. 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. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1783437/+subscriptions