panic: vop_generic_panic: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_fork.c", line 685 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *470434 31551 0 0 0 1 syz-executor.2 52080 80237 0 0 0x4000000 0 syz-executor.5 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827aaa24) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82828549,ffffffff8280ef4f,2ad,ffffffff827df398) at __assert+0x29 sys/kern/subr_prf.c:157 proc_trampoline_mi() at proc_trampoline_mi+0x221 end trace frame: 0x0, count: 11 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs.