on 01/04/2013 19:22 Andriy Gapon said the following:
> on 01/04/2013 18:51 Fabian Keil said the following:
>> vmcore.13:
>>
>> (kgdb) p *dn->dn_phys
>> Cannot access memory at address 0xffffff8015eeb800
>> (kgdb) p *dn->dn_dbuf
>> $1 = {db = {db_object = 0, db_offset = 28491776, db_size = 16384, db_data =
>> 0xffffff8015eeb000}, db_objset = 0xfffffe00691a5000, db_dnode_handle =
>> 0xfffffe00691a5020, db_parent = 0xfffffe004254ab60,
>> db_hash_next = 0x0, db_blkid = 1739, db_blkptr = 0xffffff8015d65580,
>> db_level = 0 '\0', db_mtx = {lock_object = {lo_name = 0xffffffff811d8696
>> "db->db_mtx", lo_flags = 40960000, lo_data = 0,
>> lo_witness = 0x0}, sx_lock = 1}, db_state = DB_CACHED, db_holds =
>> {rc_count = 2}, db_buf = 0xfffffe0042bedcf0, db_changed = {cv_description =
>> 0xffffffff811d86a2 "db->db_changed", cv_waiters = 0},
>> db_data_pending = 0xfffffe00406d6500, db_last_dirty = 0xfffffe00406d6500,
>> db_link = {list_next = 0xfffffe0042758c10, list_prev = 0xfffffe0069cab5f8},
>> db_user_ptr = 0xfffffe0069f70000,
>> db_user_data_ptr_ptr = 0x0, db_evict_func = 0xffffffff81105770
>> <dnode_buf_pageout>, db_immediate_evict = 0 '\0', db_freed_in_flight = 0
>> '\0', db_dirtycnt = 1 '\001'}
>
> That's interesting. So db.db_data has a bogus address.
> Not sure how that could happen and what to make of it yet.
>
In fact, this was a bogus comment :-)
I forgot that dn_phys points inside a ZFS data buffer and those do not get
dumped.
--
Andriy Gapon
_______________________________________________
freebsd-current@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-current
To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
