[Bug 273418] [panic] Repeating kernel panic on open(/dev/console)

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=273418

--- Comment #4 from Eugene Grosbein <eugen@freebsd.org> ---
(In reply to Mateusz Guzik from comment #3)

cdp has lots of 0xdeadc0dedeadc0de :

(kgdb) frame 7
#7  devfs_populate_loop (dm=dm@entry=0xfffff8044020a000,
cleanup=cleanup@entry=0)
    at /data/src/sys/fs/devfs/devfs_devs.c:533
533                         cdp->cdp_dirents[dm->dm_idx] != NULL) {
(kgdb) p *cdp
$1 = {cdp_c = {si_spare0 = 0xdeadc0dedeadc0de, si_flags = 3735929054, si_atime
= {
      tv_sec = -2401050962867404578, tv_nsec = -2401050962867404578}, si_ctime
= {
      tv_sec = -2401050962867404578, tv_nsec = -2401050962867404578}, si_mtime
= {
      tv_sec = -2401050962867404578, tv_nsec = -2401050962867404578}, si_uid =
3735929054,
    si_gid = 3735929054, si_mode = 49374, si_cred = 0xdeadc0dedeadc0de, si_drv0
= -559038242,
    si_refcount = -559038242, si_list = {le_next = 0xdeadc0dedeadc0de,
      le_prev = 0xdeadc0dedeadc0de}, si_clone = {le_next = 0xdeadc0dedeadc0de,
      le_prev = 0xdeadc0dedeadc0de}, si_children = {lh_first =
0xdeadc0dedeadc0de},
    si_siblings = {le_next = 0xdeadc0dedeadc0de, le_prev = 0xdeadc0dedeadc0de},
    si_parent = 0xdeadc0dedeadc0de, si_mountpt = 0xdeadc0dedeadc0de,
    si_drv1 = 0xdeadc0dedeadc0de, si_drv2 = 0xdeadc0dedeadc0de, si_devsw =
0xdeadc0dedeadc0de,
    si_iosize_max = -559038242, si_usecount = 16045693110842147038,
    si_threadcount = 16045693110842147038, __si_u = {__sid_snapdata =
0xdeadc0dedeadc0de},
    si_name =
"\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336"...},
cdp_list = {tqe_next = 0xdeadc0dedeadc0de,
    tqe_prev = 0xdeadc0dedeadc0de}, cdp_inode = 3735929054, cdp_flags =
3735929054,
  cdp_inuse = 3735929053, cdp_maxdirent = 3735929054, cdp_dirents =
0xdeadc0dedeadc0de,
  cdp_dirent0 = 0xdeadc0dedeadc0de, cdp_dtr_list = {tqe_next =
0xdeadc0dedeadc0de,
    tqe_prev = 0xdeadc0dedeadc0de}, cdp_dtr_cb = 0xdeadc0dedeadc0de,
  cdp_dtr_cb_arg = 0xdeadc0dedeadc0de, cdp_fdpriv = {lh_first =
0xdeadc0dedeadc0de},
  cdp_threadlock = {lock_object = {
      lo_name = 0xdeadc0dedeadc0de <error: Cannot access memory at address
0xdeadc0dedeadc0de>,
      lo_flags = 3735929054, lo_data = 3735929054, lo_witness =
0xdeadc0dedeadc0de},
    mtx_lock = 16045693110842147038}}

(kgdb) p cdp->cdp_dirents
$2 = (struct devfs_dirent **) 0xdeadc0dedeadc0de

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