syzbot

panic: pr_find_pagehead: pdppl: incorrect page
Starting stack trace...
panic(ffffffff830432e2) at panic+0x1d0 sys/kern/subr_prf.c:229
pool_do_put(ffffffff8361e2b8,fffffd807bb63000) at pool_do_put+0x465
pool_put(ffffffff8361e2b8,fffffd807bb63000) at pool_put+0xb3 sys/kern/subr_pool.c:799
pmap_destroy(fffffd80766efd90) at pmap_destroy+0x346 sys/arch/amd64/amd64/pmap.c:1448
uvm_map_teardown(fffffd8072d1fa60) at uvm_map_teardown+0x36f sys/uvm/uvm_map.c:2519
uvmspace_free(fffffd8072d1fa60) at uvmspace_free+0xcd sys/uvm/uvm_map.c:3422
reaper(ffff800029fd9448) at reaper+0x256 sys/kern/kern_exit.c:480
end trace frame: 0x0, count: 250
End of stack trace.