panic: acquiring blockable sleep lock with spinlock or critical section held (rwlock) kmmaplk
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*379697  55252      0           0          0    0  syz-executor.0
  88940  76512      0         0x2          0    1  syz-executor.0
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff823e2d24) at panic+0x15e sys/kern/subr_prf.c:218
witness_checkorder(ffffffff827b1a48,1,0) at witness_checkorder+0x1188 sys/kern/subr_witness.c:833
rw_enter_read(ffffffff827b1a38) at rw_enter_read+0x66 sys/kern/kern_rwlock.c:112
uvmfault_lookup(ffff8000212a9050,0) at uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1701
uvm_fault_check(ffff8000212a9050,ffff8000212a9088,ffff8000212a90b0) at uvm_fault_check+0x3a sys/uvm/uvm_fault.c:674
uvm_fault(ffffffff827b1a30,ffff8000256c1000,0,2) at uvm_fault+0xe2 sys/uvm/uvm_fault.c:601
kpageflttrap(ffff8000212a91e0,ffff8000256c1fe8) at kpageflttrap+0x202 sys/arch/amd64/amd64/trap.c:265
kerntrap(ffff8000212a91e0) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:321
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
memcpy() at memcpy+0x15
timeout_run(ffff800021263da8) at timeout_run+0xd6 timeout_sync_leave sys/kern/kern_timeout.c:207 [inline]
timeout_run(ffff800021263da8) at timeout_run+0xd6 sys/kern/kern_timeout.c:676
softclock_process_tick_timeout(ffff800021263da8,0) at softclock_process_tick_timeout+0x196 sys/kern/kern_timeout.c:721
softclock(0) at softclock+0x11a sys/kern/kern_timeout.c:752
end trace frame: 0xffff8000212a9420, count: 0
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