[Bug 235783] Repeated ZFS-related kernel panic

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=235783

--- Comment #7 from Jurij Kovacic <jurij.kovacic at ocpea.com> ---
Hi Andriy,

Thank you again for the detailed instructions.

The following is what I got after entering "frame 7" and "print *db" as
instructed: 


(kgdb) frame 7
#7  0xffffffff82299013 in dbuf_destroy (db=0xfffff8028de9cae0) at atomic.h:79
79              atomic_subtract_32(target, 1);
Current language:  auto; currently minimal
(kgdb) print *db
$1 = {db = {db_object = 52289, db_offset = 15868362752, db_size = 131072,
db_data = 0x0}, db_objset = 0xfffff8000f30a400, db_dnode_handle = 0x0,
db_parent = 0xfffff800168d9000,
  db_hash_next = 0x0, db_blkid = 121066, db_blkptr = 0x0, db_level = 0 '\0',
db_mtx = {lock_object = {lo_name = 0xffffffff823d529f "db->db_mtx", lo_flags =
577830912, lo_data = 0,
      lo_witness = 0x0}, sx_lock = 1}, db_state = DB_EVICTING, db_holds =
{rc_count = 0}, db_buf = 0x0, db_changed = {cv_description = 0xffffffff823d52ab
"db->db_changed", cv_waiters = 0},
  db_data_pending = 0x0, db_last_dirty = 0x0, db_link = {avl_child =
0xfffff8028de9cb90, avl_pcb = 18446735289386928809}, db_cache_link = {list_next
= 0x0, list_prev = 0x0}, db_user = 0x0,
  db_user_immediate_evict = 0 '\0', db_freed_in_flight = 0 '\0',
db_pending_evict = 0 '\0', db_dirtycnt = 0 '\0'}
(kgdb)

Kind regards,
Jurij

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