[Bug 258049] vm_reserv_depopulate panic.

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 26 Aug 2021 14:24:33 +0000
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=258049

--- Comment #4 from dgilbert_at_eicat.ca ---
(kgdb) frame 14
#14 0xffffffc0005a8da0 in vm_page_free_prep (m=0xffffffd3f1012168) at
/usr/src/sys/vm/vm_page.c:3842
warning: Source file is more recent than executable.
3842            if ((m->flags & PG_PCPU_CACHE) == 0 && vm_reserv_free_page(m))
(kgdb) p/x *m
$1 = {plinks = {q = {tqe_next = 0xffffffd3f10121d0, tqe_prev =
0xffffffd3f1012100}, s = {ss = {
        sle_next = 0xffffffd3f10121d0}}, memguard = {p = 0xffffffd3f10121d0, v
= 0xffffffd3f1012100}, uma = {
      slab = 0xffffffd3f10121d0, zone = 0xffffffd3f1012100}}, listq = {tqe_next
= 0xffffffd3f10121d0,
    tqe_prev = 0xffffffd3f1012110}, object = 0x0, pindex = 0x2d0, phys_addr =
0x21f2d0000, md = {pv_list = {
      tqh_first = 0x0, tqh_last = 0xffffffd3f10121a0}, pv_gen = 0xf, pv_memattr
= 0x2}, ref_count = 0x0,
  busy_lock = 0xfffffffe, a = {{flags = 0x18, queue = 0x1, act_count = 0x5},
_bits = 0x5010018}, order = 0xc,
  pool = 0x0, flags = 0x0, oflags = 0x0, psind = 0x0, segind = 0x1, valid =
0x0, dirty = 0x0}
(kgdb) p/x *(vm_reserv_t)0xffffffd3e672c560
$2 = {lock = {lock_object = {lo_name = 0xffffffc00066006c, lo_flags =
0x1030000, lo_data = 0x0,
      lo_witness = 0xffffffd3ffd8e180}, mtx_lock = 0xffffffc2227f7100},
partpopq = {tqe_next = 0xffffffd3e6756fe0,
    tqe_prev = 0xffffffd3e679c240}, objq = {le_next = 0xffffffd3e67b04a0,
le_prev = 0xffffffd0a46be0c0},
  object = 0xffffffd0a46be000, pindex = 0x200, pages = 0xffffffd3f100cce8,
popcnt = 0xef, domain = 0x0,
  inpartpopq = 0x1, lasttick = 0xa9d59012, popmap = {0x0, 0x0, 0x0,
0xffffffffff000000, 0xfffffffffffe040f,
    0x24fc0ffffc925927, 0xffffff0847fc9249, 0x1fffffffffffffff}}

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Received on Thu Aug 26 2021 - 14:24:33 UTC

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