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.
--
Andriy Gapon
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