graphic: 0.893 device: 0.840 socket: 0.789 instruction: 0.776 network: 0.770 vnc: 0.764 semantic: 0.697 mistranslation: 0.642 boot: 0.587 KVM: 0.382 other: 0.351 assembly: 0.166 error: Crash of qemu-img/qemu-io on the qcow2 image with large values in 'incompatible features' field qemu-io and qemu-img fails with an assertion (see below) at attempt to interact with the qcow2 image having large values in the 'incompatible features' header field. util/error.c:34: error_set: Assertion `*errp == ((void *)0)' failed. The backtrace file and the test image can be found in the attachment. The backtraces are for the next command: qemu-img check -f qcow2 test_image The image was generated by the qcow2 image fuzzer. qemu.git head: 5a7348045091a2bc15 Fixed: commit 12ac6d3db721a288c8953c5c253230aa0949a0e1 Author: Kevin Wolf