[Bug 256806] panic: vm_page_free_prep: freeing mapped page

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 24 Jun 2021 14:36:37 +0000
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=256806

--- Comment #4 from Niels Bakker <niels=freebsd_at_bakker.net> ---
(kgdb) p/x *((vm_page_t)0xfffffe0014633408)->object
$1 = {lock = {lock_object = {lo_name = 0xffffffff8114f4a3, lo_flags =
0x25630000, lo_data = 0x0, 
      lo_witness = 0x0}, rw_lock = 0xfffffe011b85d3a0}, object_list = {tqe_next
= 0xfffff80290744420, 
    tqe_prev = 0xfffff80290744230}, shadow_head = {lh_first =
0xfffff803db649a50}, shadow_list = {
    le_next = 0x0, le_prev = 0xfffff80154173b88}, memq = {tqh_first =
0xfffffe0014633408, 
    tqh_last = 0xfffffe0010ad82f8}, rtree = {rt_root = 0xfffff803a8a57f30},
size = 0x28a, domain = {
    dr_policy = 0x0, dr_iter = 0x0}, generation = 0x1, cleangeneration = 0x1,
ref_count = 0x2, 
  shadow_count = 0x1, memattr = 0x6, type = 0x1, flags = 0x3210, pg_color =
0x368, paging_in_progress = {
    __count = 0x1}, busy = {__count = 0x0}, resident_page_count = 0x1c,
backing_object = 0x0, 
  backing_object_offset = 0x0, pager_object_list = {tqe_next = 0x0, tqe_prev =
0x0}, rvq = {lh_first = 0x0}, 
  handle = 0x0, un_pager = {vnp = {vnp_size = 0xb2a, writemappings =
0xfffff80113e04e10}, devp = {
      devp_pglist = {tqh_first = 0xb2a, tqh_last = 0xfffff80113e04e10}, ops =
0x0, dev = 0x0}, sgp = {
      sgp_pglist = {tqh_first = 0xb2a, tqh_last = 0xfffff80113e04e10}}, swp =
{swp_tmpfs = 0xb2a, swp_blks = {
        pt_root = 0xfffff80113e04e10}, writemappings = 0x0}, phys = {ops =
0xb2a, {
        data_ptr = 0xfffff80113e04e10, data_val = 0xfffff80113e04e10}}}, cred =
0xfffff80060ea2e00, 
  charge = 0x28a000, umtx_data = 0x0}

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Received on Thu Jun 24 2021 - 14:36:37 UTC

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