panic: acquiring blockable sleep lock with spinlock or critical section held (kernel_lock) &kernel_lock Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *418512 25147 0 0x14000 0x200 1 systqmp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82415c6f) at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff828b1058,9,0) at witness_checkorder+0x10e0 sys/kern/subr_witness.c:821 __mp_lock(ffffffff828b0e50) at __mp_lock+0xa1 read_rflags machine/cpufunc.h:195 [inline] __mp_lock(ffffffff828b0e50) at __mp_lock+0xa1 intr_disable machine/cpufunc.h:216 [inline] __mp_lock(ffffffff828b0e50) at __mp_lock+0xa1 sys/kern/kern_lock.c:142 pageflttrap(ffff800020da33b0,0) at pageflttrap+0x7f sys/arch/amd64/amd64/trap.c:180 kerntrap(ffff800020da33b0) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:302 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b pool_cache_gc(ffffffff828ccef0) at pool_cache_gc+0x138 pool_cache_list_put sys/kern/subr_pool.c:1970 [inline] pool_cache_gc(ffffffff828ccef0) at pool_cache_gc+0x138 sys/kern/subr_pool.c:2025 pool_gc_pages(0) at pool_gc_pages+0x6c sys/kern/subr_pool.c:1559 taskq_thread(ffffffff827a29c0) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: 5 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs.