panic: trap type 4, WAcRoNdIeN=G: 0SPL, N OpTc =fLOffWEfRfEfDff 8O1Ne S6YSC3f8b ALSLt a91r t1i2n7g 28s308t4a0c kE XtIT r0a ce.3. . Stopped at savectx+0xae: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND 273350 72150 0 0 0x4000000 0 syz-executor * 21040 55456 0 0 0 1 syz-executor savectx() at savectx+0xae end of kernel end trace frame: 0x71564bdddb60, 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.