[ 158.9156001] panic: kernel diagnostic assertion "l->l_stat == LSONPROC" failed: file "/syzkaller/managers/netbsd/kernel/sys/kern/kern_sleepq.c", line 221 
[ 158.9156001] cpu0: Begin traceback...
[ 158.9156001] vpanic() at netbsd:vpanic+0x241 sys/kern/subr_prf.c:336
[ 158.9156001] _GLOBAL__sub_D_65535_0_cpu_configure() at netbsd:_GLOBAL__sub_D_65535_0_cpu_configure
[ 158.9156001] sleepq_enqueue() at netbsd:sleepq_enqueue+0x1c9 sys/kern/kern_sleepq.c:221
[ 158.9156001] turnstile_block() at netbsd:turnstile_block+0x249 x86_curlwp sys/arch/amd64/compile/obj/GENERIC_SYZKALLER/./machine/cpu.h:68 [inline]
[ 158.9156001] turnstile_block() at netbsd:turnstile_block+0x249 KPREEMPT_DISABLE sys/sys/lwp.h:525 [inline]
[ 158.9156001] turnstile_block() at netbsd:turnstile_block+0x249 sys/kern/kern_turnstile.c:438