uvm_fault(0xfffffd806b1W4ARcNI5NdG8:, SP0xL0 ,NO 0T, LO1WE)R E-D> ONe SkYeSrCnAeLlL: 2 5p2ag e 0f aEuXlItT t0 ra3p, codStopped at savectx+0xae: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND *227938 51949 0 0 0x4000000 0 syz-executor savectx() at savectx+0xae end of kernel end trace frame: 0x9b8f26c7610, count: 14 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs.