panic: malloc: out of space in kmem_map Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *102029 89588 0 0x2 0 1K syz-executor.1 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:399 panic() at panic+0x174 sys/kern/subr_prf.c:208 malloc(200000,2a,9) at malloc+0xad5 sys/kern/kern_malloc.c:242 kcovioctl(1b1300,80084b01,ffff800020c0d280,3,ffff800020b8a270) at kcovioctl+0xe6 kd_init sys/dev/kcov.c:405 [inline] kcovioctl(1b1300,80084b01,ffff800020c0d280,3,ffff800020b8a270) at kcovioctl+0xe6 sys/dev/kcov.c:298 VOP_IOCTL(fffffd80624d40d0,80084b01,ffff800020c0d280,3,fffffd807f7c6a80,ffff800020b8a270) at VOP_IOCTL+0x9a sys/kern/vfs_vops.c:290 vn_ioctl(fffffd806cb50860,80084b01,ffff800020c0d280,ffff800020b8a270) at vn_ioctl+0xc9 sys/kern/vfs_vnops.c:512 sys_ioctl(ffff800020b8a270,ffff800020c0d3c0,ffff800020c0d3b0) at sys_ioctl+0x651 syscall(ffff800020c0d460) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c0d460) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,36,7f7ffffd5628,36,3,2bc720f1890) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd5140, count: 6 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs.