panic: assertwaitok: non-zero mutex count: 1
Stopped at      db_enter+0x1c:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
 449976  69959  32767        0x10  0x4000000    1  syz-executor.3
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827be81d) at panic+0x17b sys/kern/subr_prf.c:198
assertwaitok() at assertwaitok+0x132 sys/kern/subr_xxx.c:163
mi_switch() at mi_switch+0x46 sys/kern/sched_bsd.c:360
sleeclient_loop: send disconnect: Broken pipe