[Bug 236480] [zfs] [panic] solaris assert: dn->dn_type != DMU_OT_NONE

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Tue Mar 12 02:42:23 UTC 2019


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236480

            Bug ID: 236480
           Summary: [zfs] [panic] solaris assert: dn->dn_type !=
                    DMU_OT_NONE
           Product: Base System
           Version: 12.0-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs at FreeBSD.org
          Reporter: ncrogers at gmail.com

This is related to bug #226130.

The following panic happens with INVARIANTS enabled. It has happened more than
once but is difficult to reproduce reliably. The affected dataset is home to a
PostgreSQL database.

courtland# kgdb /boot/kernel/kernel /var/crash/vmcore.0
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Reading symbols from /boot/kernel/kernel...Reading symbols from
/usr/lib/debug//boot/kernel/kernel.debug...done.
done.

Unread portion of the kernel message buffer:
panic: solaris assert: dn->dn_type != DMU_OT_NONE, file:
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c, line: 2540
cpuid = 1
time = 1552104873
KDB: stack backtrace:
#0 0xffffffff80d3bf77 at kdb_backtrace+0x67
#1 0xffffffff80cf4a53 at vpanic+0x1a3
#2 0xffffffff80cf4833 at panic+0x43
#3 0xffffffff803bbcba at assfail+0x1a
#4 0xffffffff803f094b at dbuf_create+0x9b
#5 0xffffffff803f08a1 at dbuf_create_bonus+0x71
#6 0xffffffff803f8d10 at dmu_bonus_hold+0xb0
#7 0xffffffff804cde29 at zfs_zget+0x69
#8 0xffffffff804bff37 at zfs_get_data+0x67
#9 0xffffffff804d3faf at zil_commit_impl+0x15af
#10 0xffffffff804c73bb at zfs_freebsd_fsync+0xcb
#11 0xffffffff813861be at VOP_FSYNC_APV+0x9e
#12 0xffffffff80dab2d4 at vop_stdfdatasync+0x34
#13 0xffffffff8138a84e at VOP_FDATASYNC_APV+0x9e
#14 0xffffffff80dc7bd3 at kern_fsync+0x1b3
#15 0xffffffff811fc532 at amd64_syscall+0x272
#16 0xffffffff811d65ad at fast_syscall_common+0x101
Uptime: 3d10h28m54s
Dumping 4867 out of 16241 MB:..1%..11%..21%..31%..41%..51%..61%..71%..81%..91%

__curthread () at ./machine/pcpu.h:230
230     ./machine/pcpu.h: No such file or directory.
(kgdb) backtrace
#0  __curthread () at ./machine/pcpu.h:230
#1  doadump (textdump=<optimized out>) at /usr/src/sys/kern/kern_shutdown.c:366
#2  0xffffffff80cf468b in kern_reboot (howto=260) at
/usr/src/sys/kern/kern_shutdown.c:446
#3  0xffffffff80cf4ab3 in vpanic (fmt=<optimized out>, ap=0xfffffe00b77c54a0)
at /usr/src/sys/kern/kern_shutdown.c:872
#4  0xffffffff80cf4833 in panic (fmt=<unavailable>) at
/usr/src/sys/kern/kern_shutdown.c:799
#5  0xffffffff803bbcba in assfail (a=<unavailable>, f=<unavailable>,
l=<unavailable>)
    at /usr/src/sys/cddl/compat/opensolaris/kern/opensolaris_cmn_err.c:81
#6  0xffffffff803f094b in dbuf_create (dn=0xfffff8015f77a770, level=0 '\000',
blkid=18446744073709551615, parent=0xfffff80296803c60, blkptr=0x0)
    at /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c:2540
#7  0xffffffff803f08a1 in dbuf_create_bonus (dn=0xfffff8015f77a770) at
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c:3085
#8  0xffffffff803f8d10 in dmu_bonus_hold (os=<optimized out>, object=<optimized
out>, tag=0x0, dbp=0xfffffe00b77c5648)
    at /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c:345
#9  0xffffffff804cde29 in zfs_zget (zfsvfs=0xfffffe008ea28000, obj_num=33262,
zpp=0xfffffe00b77c56c0)
    at /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_znode.c:1137
#10 0xffffffff804bff37 in zfs_get_data (arg=0xfffffe008ea28000,
lr=0xfffffe00a6620300, buf=0x0, lwb=0xfffff8042cf828c0, zio=0xfffff80047eb5000)
    at /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c:1297
#11 0xffffffff804d3faf in zil_lwb_commit (zilog=<optimized out>, lwb=<optimized
out>, itx=<optimized out>)
    at /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c:1493
#12 zil_process_commit_list (zilog=<optimized out>) at
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c:2069
#13 zil_commit_writer (zilog=<optimized out>, zcw=<optimized out>) at
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c:2201
#14 zil_commit_impl (zilog=<optimized out>, foid=<optimized out>) at
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c:2712
#15 0xffffffff804c73bb in zfs_fsync (syncflag=0, vp=<optimized out>,
cr=<optimized out>, ct=<optimized out>)
    at /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c:2627
#16 zfs_freebsd_fsync (ap=<optimized out>) at
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c:5079
#17 0xffffffff813861be in VOP_FSYNC_APV (vop=0xffffffff81c64f70 <zfs_vnodeops>,
a=0xfffffe00b77c58c0) at vnode_if.c:1331
#18 0xffffffff80dab2d4 in VOP_FSYNC (vp=<unavailable>, waitfor=1, td=<optimized
out>) at ./vnode_if.h:549
#19 vop_stdfdatasync (ap=<optimized out>) at
/usr/src/sys/kern/vfs_default.c:732
#20 0xffffffff8138a84e in VOP_FDATASYNC_APV (vop=0xffffffff81d3b338
<default_vnodeops>, a=0xfffffe00b77c5938) at vnode_if.c:4437
#21 0xffffffff80dc7bd3 in VOP_FDATASYNC (vp=<optimized out>, td=<optimized
out>) at ./vnode_if.h:1849
#22 kern_fsync (td=0xfffff8000bb96580, fd=<optimized out>, fullsync=false) at
/usr/src/sys/kern/vfs_syscalls.c:3374
#23 0xffffffff811fc532 in syscallenter (td=0xfffff8000bb96580) at
/usr/src/sys/amd64/amd64/../../kern/subr_syscall.c:135
#24 amd64_syscall (td=0xfffff8000bb96580, traced=0) at
/usr/src/sys/amd64/amd64/trap.c:1076
#25 <signal handler called>
#26 0x000000080131e8aa in ?? ()
Backtrace stopped: Cannot access memory at address 0x7fffffffd078
(kgdb) 
#0  __curthread () at ./machine/pcpu.h:230
#1  doadump (textdump=<optimized out>) at /usr/src/sys/kern/kern_shutdown.c:366
#2  0xffffffff80cf468b in kern_reboot (howto=260) at
/usr/src/sys/kern/kern_shutdown.c:446
#3  0xffffffff80cf4ab3 in vpanic (fmt=<optimized out>, ap=0xfffffe00b77c54a0)
at /usr/src/sys/kern/kern_shutdown.c:872
#4  0xffffffff80cf4833 in panic (fmt=<unavailable>) at
/usr/src/sys/kern/kern_shutdown.c:799
#5  0xffffffff803bbcba in assfail (a=<unavailable>, f=<unavailable>,
l=<unavailable>)
    at /usr/src/sys/cddl/compat/opensolaris/kern/opensolaris_cmn_err.c:81
#6  0xffffffff803f094b in dbuf_create (dn=0xfffff8015f77a770, level=0 '\000',
blkid=18446744073709551615, parent=0xfffff80296803c60, blkptr=0x0)
    at /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c:2540
#7  0xffffffff803f08a1 in dbuf_create_bonus (dn=0xfffff8015f77a770) at
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c:3085
#8  0xffffffff803f8d10 in dmu_bonus_hold (os=<optimized out>, object=<optimized
out>, tag=0x0, dbp=0xfffffe00b77c5648)
    at /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c:345
#9  0xffffffff804cde29 in zfs_zget (zfsvfs=0xfffffe008ea28000, obj_num=33262,
zpp=0xfffffe00b77c56c0)
    at /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_znode.c:1137
#10 0xffffffff804bff37 in zfs_get_data (arg=0xfffffe008ea28000,
lr=0xfffffe00a6620300, buf=0x0, lwb=0xfffff8042cf828c0, zio=0xfffff80047eb5000)
    at /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c:1297
#11 0xffffffff804d3faf in zil_lwb_commit (zilog=<optimized out>, lwb=<optimized
out>, itx=<optimized out>)
    at /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c:1493
#12 zil_process_commit_list (zilog=<optimized out>) at
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c:2069
#13 zil_commit_writer (zilog=<optimized out>, zcw=<optimized out>) at
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c:2201
#14 zil_commit_impl (zilog=<optimized out>, foid=<optimized out>) at
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c:2712
#15 0xffffffff804c73bb in zfs_fsync (syncflag=0, vp=<optimized out>,
cr=<optimized out>, ct=<optimized out>)
    at /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c:2627
#16 zfs_freebsd_fsync (ap=<optimized out>) at
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c:5079
#17 0xffffffff813861be in VOP_FSYNC_APV (vop=0xffffffff81c64f70 <zfs_vnodeops>,
a=0xfffffe00b77c58c0) at vnode_if.c:1331
#18 0xffffffff80dab2d4 in VOP_FSYNC (vp=<unavailable>, waitfor=1, td=<optimized
out>) at ./vnode_if.h:549
#19 vop_stdfdatasync (ap=<optimized out>) at
/usr/src/sys/kern/vfs_default.c:732
#20 0xffffffff8138a84e in VOP_FDATASYNC_APV (vop=0xffffffff81d3b338
<default_vnodeops>, a=0xfffffe00b77c5938) at vnode_if.c:4437
#21 0xffffffff80dc7bd3 in VOP_FDATASYNC (vp=<optimized out>, td=<optimized
out>) at ./vnode_if.h:1849
#22 kern_fsync (td=0xfffff8000bb96580, fd=<optimized out>, fullsync=false) at
/usr/src/sys/kern/vfs_syscalls.c:3374
#23 0xffffffff811fc532 in syscallenter (td=0xfffff8000bb96580) at
/usr/src/sys/amd64/amd64/../../kern/subr_syscall.c:135
#24 amd64_syscall (td=0xfffff8000bb96580, traced=0) at
/usr/src/sys/amd64/amd64/trap.c:1076
#25 <signal handler called>
#26 0x000000080131e8aa in ?? ()
Backtrace stopped: Cannot access memory at address 0x7fffffffd078
(kgdb) 


(kgdb) fr 6
#6  0xffffffff803f094b in dbuf_create (dn=0xfffff8015f77a770, 
    level=0 '\000', blkid=18446744073709551615, 
    parent=0xfffff80296803c60, blkptr=0x0)
    at /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c:2540
2540            ASSERT(dn->dn_type != DMU_OT_NONE);


(kgdb) print *dn
$2 = {dn_struct_rwlock = {lock_object = {
      lo_name = 0xffffffff814ada70 "dn->dn_struct_rwlock", 
      lo_flags = 40960000, lo_data = 0, lo_witness = 0x0}, 
    sx_lock = 18446735277813228928}, dn_link = {
    list_next = 0xfffff8026c5973d8, list_prev = 0xfffff8018f9cbb48}, 
  dn_objset = 0xfffff8000b72c400, dn_object = 33262, 
  dn_dbuf = 0xfffff80296803c60, dn_handle = 0xfffff802edef9520, 
  dn_phys = 0xfffffe01c6fd1c00, dn_type = DMU_OT_NONE, dn_bonuslen = 168, 
  dn_bonustype = 44 ',', dn_nblkptr = 1 '\001', dn_checksum = 0 '\000', 
  dn_compress = 0 '\000', dn_nlevels = 1 '\001', 
  dn_indblkshift = 17 '\021', dn_datablkshift = 0 '\000', 
  dn_moved = 0 '\000', dn_datablkszsec = 7, dn_datablksz = 3584, 
  dn_maxblkid = 0, dn_next_type = "\000\000\000", 
  dn_num_slots = 1 '\001', dn_next_nblkptr = "\000\000\000", 
  dn_next_nlevels = "\000\000\000", dn_next_indblkshift = "\000\000\000", 
  dn_next_bonustype = "\000\000\000", dn_rm_spillblk = "\000\000\000", 
  dn_next_bonuslen = {0, 0, 0, 0}, dn_next_blksz = {0, 0, 0, 0}, 
  dn_dbufs_count = 0, dn_dirty_link = {{list_next = 0x0, 
      list_prev = 0x0}, {list_next = 0xfffff803bbf774e0, 
      list_prev = 0xfffff8034a965830}, {list_next = 0x0, 
      list_prev = 0x0}, {list_next = 0x0, list_prev = 0x0}}, dn_mtx = {
    lock_object = {lo_name = 0xffffffff81488d05 "dn->dn_mtx", 
      lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, 
  dn_dirty_records = {{list_size = 344, list_offset = 0, list_head = {
        list_next = 0xfffff8015f77a890, list_prev = 0xfffff8015f77a890}}, 
    {list_size = 344, list_offset = 0, list_head = {
        list_next = 0xfffff8015f77a8b0, list_prev = 0xfffff8015f77a8b0}}, 
    {list_size = 344, list_offset = 0, list_head = {
        list_next = 0xfffff8015f77a8d0, list_prev = 0xfffff8015f77a8d0}}, 
    {list_size = 344, list_offset = 0, list_head = {
        list_next = 0xfffff8015f77a8f0, 
        list_prev = 0xfffff8015f77a8f0}}}, dn_free_ranges = {0x0, 0x0, 
    0x0, 0x0}, dn_allocated_txg = 0, dn_free_txg = 0, 
  dn_assigned_txg = 0, dn_notxholds = {
    cv_description = 0xffffffff814ba0a4 "dn->dn_notxholds", 
    cv_waiters = 0}, dn_dirtyctx = DN_DIRTY_OPEN, 
  dn_dirtyctx_firstset = 0xfffff8038681d070
"\336\300\255\336\336\300\255\336\360G\305\201\377\377\377\377\336\300\255\336\336\300\255\336\360G\305\201\377\377\377\377\336\300\255\336\336\300\255\336\360G\305\201\377\377\377\377\336\300\255\336\336\300\255\336\360G\305\201\377\377\377\377\336\300\255\336\336\300\255\336\360G\305\201\377\377\377\377\336\300\255\336\336\300\255\336\360G\305\201\377\377\377\377\336\300\255\336\336\300\255\336\360G\305\201\377\377\377\377\336\300\255\336\336\300\255\336\360G\305\201\377\377\377\377\336\300\255\336\336\300\255\336\360G\305\201\377\377\377\377\336\300\255\336\336\300\255\336\360G\305\201\377\377\377\377\336\300\255\336\336\300\255\336\360G\305\201\377\377\377\377\336\300\255\336\336\300\255\336\3--Type
<RET> for more, q to quit, c to continue without paging--
60G\305\201\377\377\377\377\336\300\255\336\336\300\255\336"..., 
  dn_tx_holds = {rc_mtx = {lock_object = {
        lo_name = 0xffffffff814893e6 "rc->rc_mtx", lo_flags = 577830912, 
        lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, rc_tracked = 0, 
    rc_list = {list_size = 40, list_offset = 0, list_head = {
        list_next = 0xfffff8015f77a990, list_prev = 0xfffff8015f77a990}}, 
    rc_removed = {list_size = 40, list_offset = 0, list_head = {
        list_next = 0xfffff8015f77a9b0, list_prev = 0xfffff8015f77a9b0}}, 
    rc_count = 0, rc_removed_count = 0}, dn_holds = {rc_mtx = {
      lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", 
        lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, 
      sx_lock = 1}, rc_tracked = 0, rc_list = {list_size = 40, 
      list_offset = 0, list_head = {list_next = 0xfffff8015f77aa08, 
        list_prev = 0xfffff8015f77aa08}}, rc_removed = {list_size = 40, 
      list_offset = 0, list_head = {list_next = 0xfffff8015f77aa28, 
        list_prev = 0xfffff8015f77aa28}}, rc_count = 2, 
    rc_removed_count = 0}, dn_dbufs_mtx = {lock_object = {
      lo_name = 0xffffffff814404f1 "dn->dn_dbufs_mtx", 
      lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, 
  dn_dbufs = {avl_root = 0x0, 
    avl_compar = 0xffffffff80414810 <dbuf_compare>, avl_offset = 288, 
    avl_numnodes = 0, avl_size = 352}, dn_bonus = 0x0, dn_have_spill = 0, 
  dn_zio = 0xfffff8024a314000, dn_oldused = 0, dn_oldflags = 0, 
  dn_olduid = 0, dn_oldgid = 0, dn_newuid = 70, dn_newgid = 70, 
  dn_id_flags = 13, dn_zfetch = {zf_rwlock = {lock_object = {
        lo_name = 0xffffffff813ec741 "zf->zf_rwlock", 
        lo_flags = 40960000, lo_data = 0, lo_witness = 0x0}, 
      sx_lock = 1}, zf_stream = {list_size = 80, list_offset = 64, 
      list_head = {list_next = 0xfffff8015f77ab10, 
        list_prev = 0xfffff8015f77ab10}}, zf_dnode = 0xfffff8015f77a770}}
(kgdb) print *parent
$3 = {db = {db_object = 0, db_offset = 17022976, db_size = 16384, 
    db_data = 0xfffffe01c6fd0000}, db_objset = 0xfffff8000b72c400, 
  db_dnode_handle = 0xfffff8000b72c420, db_parent = 0xfffff800743a9000, 
  db_hash_next = 0x0, db_blkid = 1039, db_blkptr = 0xfffffe017b400780, 
  db_level = 0 '\000', db_mtx = {lock_object = {
      lo_name = 0xffffffff81427def "db->db_mtx", lo_flags = 577830912, 
      lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, db_state = DB_CACHED, 
  db_holds = {rc_mtx = {lock_object = {
        lo_name = 0xffffffff814893e6 "rc->rc_mtx", lo_flags = 577830912, 
        lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, rc_tracked = 0, 
    rc_list = {list_size = 40, list_offset = 0, list_head = {
        list_next = 0xfffff80296803d18, list_prev = 0xfffff80296803d18}}, 
    rc_removed = {list_size = 40, list_offset = 0, list_head = {
        list_next = 0xfffff80296803d38, list_prev = 0xfffff80296803d38}}, 
    rc_count = 19, rc_removed_count = 0}, db_buf = 0xfffff80225c1de00, 
  db_changed = {cv_description = 0xffffffff8138c10b "db->db_changed", 
    cv_waiters = 0}, db_data_pending = 0xfffff80449928000, 
  db_last_dirty = 0xfffff80449928000, db_link = {avl_child = {
      0xfffff802abcc6ee0, 0xfffff8030efbfc20}, 
    avl_pcb = 18446735290778607909}, db_cache_link = {list_next = 0x0, 
    list_prev = 0x0}, db_caching_status = DB_NO_CACHE, 
  db_user = 0xfffff802edef9000, db_user_immediate_evict = 0 '\000', 
  db_freed_in_flight = 0 '\000', db_pending_evict = 0 '\000', 
  db_dirtycnt = 1 '\001'}


(kgdb) fr 9
#9  0xffffffff804cde29 in zfs_zget (zfsvfs=0xfffffe008ea28000, obj_num=33262,
zpp=0xfffffe00b77c56c0)
    at /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_znode.c:1137
1137            err = sa_buf_hold(zfsvfs->z_os, obj_num, NULL, &db);


(kgdb) print *zfsvfs
$4 = {z_vfs = 0xfffff800133fd000, z_parent = 0xfffffe008ea28000, z_os =
0xfffff8000b72c400, z_root = 4, z_rootvnode = 0xfffff8001340eb40, 
  z_rootvnodelock = {lock_object = {lo_name = 0xffffffff814594a9 "zfs root
vnode lock", lo_flags = 50528256, lo_data = 0, lo_witness = 0x0}, 
    rm_writecpus = {__bits = {0, 0, 0, 0}}, rm_activeReaders = {lh_first =
0x0}, _rm_lock = {_rm_wlock_object = {
        lo_name = 0xffffffff814594a9 "zfs root vnode lock", lo_flags =
16842752, lo_data = 0, lo_witness = 0x0}, _rm_lock_mtx = {lock_object = {
          lo_name = 0xffffffff814594a9 "zfs root vnode lock", lo_flags =
16842752, lo_data = 0, lo_witness = 0x0}, mtx_lock = 0}, _rm_lock_sx = {
        lock_object = {lo_name = 0xffffffff814594a9 "zfs root vnode lock",
lo_flags = 16842752, lo_data = 0, lo_witness = 0x0}, sx_lock = 0}}}, 
  z_unlinkedobj = 3, z_max_blksz = 16384, z_fuid_obj = 0, z_fuid_size = 0,
z_fuid_idx = {avl_root = 0x0, avl_compar = 0x0, avl_offset = 0, 
    avl_numnodes = 0, avl_size = 0}, z_fuid_domain = {avl_root = 0x0,
avl_compar = 0x0, avl_offset = 0, avl_numnodes = 0, avl_size = 0}, 
  z_fuid_lock = {lock_object = {lo_name = 0xffffffff81496098
"zfsvfs->z_fuid_lock", lo_flags = 40960000, lo_data = 0, lo_witness = 0x0},
sx_lock = 1}, 
  z_fuid_loaded = 0, z_fuid_dirty = 0, z_fuid_replay = 0x0, z_log =
0xfffff80003b09800, z_acl_mode = 0, z_acl_inherit = 4, 
  z_case = ZFS_CASE_SENSITIVE, z_utf8 = 0, z_norm = 0, z_atime = 0, z_unmounted
= 0, z_teardown_lock = {locks = {{rr_lock = {lock_object = {
            lo_name = 0xffffffff813bcb70 "rrl->rr_lock", lo_flags = 577830912,
lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, rr_cv = {
          cv_description = 0xffffffff8141c850 "rrl->rr_cv", cv_waiters = 0},
rr_writer = 0x0, rr_anon_rcount = {rc_mtx = {lock_object = {
              lo_name = 0xffffffff814893e6 "rc->rc_mtx", lo_flags = 577830912,
lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, rc_tracked = 0, 
          rc_list = {list_size = 40, list_offset = 0, list_head = {list_next =
0xfffffe008ea281c0, list_prev = 0xfffffe008ea281c0}}, rc_removed = {
            list_size = 40, list_offset = 0, list_head = {list_next =
0xfffffe008ea281e0, list_prev = 0xfffffe008ea281e0}}, rc_count = 1, 
          rc_removed_count = 0}, rr_linked_rcount = {rc_mtx = {lock_object =
{lo_name = 0xffffffff814893e6 "rc->rc_mtx", lo_flags = 577830912, 
              lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, rc_tracked = 0,
rc_list = {list_size = 40, list_offset = 0, list_head = {
              list_next = 0xfffffe008ea28238, list_prev = 0xfffffe008ea28238}},
rc_removed = {list_size = 40, list_offset = 0, list_head = {
              list_next = 0xfffffe008ea28258, list_prev = 0xfffffe008ea28258}},
rc_count = 0, rc_removed_count = 0}, rr_writer_wanted = 0, 
        rr_track_all = 0}, {rr_lock = {lock_object = {lo_name =
0xffffffff813bcb70 "rrl->rr_lock", lo_flags = 577830912, lo_data = 0, 
            lo_witness = 0x0}, sx_lock = 1}, rr_cv = {cv_description =
0xffffffff8141c850 "rrl->rr_cv", cv_waiters = 0}, rr_writer = 0x0, 
        rr_anon_rcount = {rc_mtx = {lock_object = {lo_name = 0xffffffff814893e6
"rc->rc_mtx", lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, 
            sx_lock = 1}, rc_tracked = 0, rc_list = {list_size = 40,
list_offset = 0, list_head = {list_next = 0xfffffe008ea282f0, 
              list_prev = 0xfffffe008ea282f0}}, rc_removed = {list_size = 40,
list_offset = 0, list_head = {list_next = 0xfffffe008ea28310, 
              list_prev = 0xfffffe008ea28310}}, rc_count = 0, rc_removed_count
= 0}, rr_linked_rcount = {rc_mtx = {lock_object = {
              lo_name = 0xffffffff814893e6 "rc->rc_mtx", lo_flags = 577830912,
lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, rc_tracked = 0, 
          rc_list = {list_size = 40, list_offset = 0, list_head = {list_next =
0xfffffe008ea28368, list_prev = 0xfffffe008ea28368}}, rc_removed = {
            list_size = 40, list_offset = 0, list_head = {list_next =
0xfffffe008ea28388, list_prev = 0xfffffe008ea28388}}, rc_count = 0, 
          rc_removed_count = 0}, rr_writer_wanted = 0, rr_track_all = 0},
{rr_lock = {lock_object = {lo_name = 0xffffffff813bcb70 "rrl->rr_lock", 
            lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1},
rr_cv = {cv_description = 0xffffffff8141c850 "rrl->rr_cv", 
          cv_waiters = 0}, rr_writer = 0x0, rr_anon_rcount = {rc_mtx =
{lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", 
              lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock =
1}, rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, 
            list_head = {list_next = 0xfffffe008ea28420, list_prev =
0xfffffe008ea28420}}, rc_removed = {list_size = 40, list_offset = 0, list_head
= {
              list_next = 0xfffffe008ea28440, list_prev = 0xfffffe008ea28440}},
rc_count = 0, rc_removed_count = 0}, rr_linked_rcount = {rc_mtx = {
            lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", lo_flags
= 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, 
          rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, list_head
= {list_next = 0xfffffe008ea28498, list_prev = 0xfffffe008ea28498}}, 
          rc_removed = {list_size = 40, list_offset = 0, list_head = {list_next
= 0xfffffe008ea284b8, list_prev = 0xfffffe008ea284b8}}, rc_count = 0, 
          rc_removed_count = 0}, rr_writer_wanted = 0, rr_track_all = 0},
{rr_lock = {lock_object = {lo_name = 0xffffffff813bcb70 "rrl->rr_lock", 
            lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1},
rr_cv = {cv_description = 0xffffffff8141c850 "rrl->rr_cv", 
          cv_waiters = 0}, rr_writer = 0x0, rr_anon_rcount = {rc_mtx =
{lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", 
              lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock =
1}, rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, 
            list_head = {list_next = 0xfffffe008ea28550, list_prev =
0xfffffe008ea28550}}, rc_removed = {list_size = 40, list_offset = 0, list_head
= {
--Type <RET> for more, q to quit, c to continue without paging--
              list_next = 0xfffffe008ea28570, list_prev = 0xfffffe008ea28570}},
rc_count = 0, rc_removed_count = 0}, rr_linked_rcount = {rc_mtx = {
            lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", lo_flags
= 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, 
          rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, list_head
= {list_next = 0xfffffe008ea285c8, list_prev = 0xfffffe008ea285c8}}, 
          rc_removed = {list_size = 40, list_offset = 0, list_head = {list_next
= 0xfffffe008ea285e8, list_prev = 0xfffffe008ea285e8}}, rc_count = 0, 
          rc_removed_count = 0}, rr_writer_wanted = 0, rr_track_all = 0},
{rr_lock = {lock_object = {lo_name = 0xffffffff813bcb70 "rrl->rr_lock", 
            lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1},
rr_cv = {cv_description = 0xffffffff8141c850 "rrl->rr_cv", 
          cv_waiters = 0}, rr_writer = 0x0, rr_anon_rcount = {rc_mtx =
{lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", 
              lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock =
1}, rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, 
            list_head = {list_next = 0xfffffe008ea28680, list_prev =
0xfffffe008ea28680}}, rc_removed = {list_size = 40, list_offset = 0, list_head
= {
              list_next = 0xfffffe008ea286a0, list_prev = 0xfffffe008ea286a0}},
rc_count = 0, rc_removed_count = 0}, rr_linked_rcount = {rc_mtx = {
            lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", lo_flags
= 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, 
          rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, list_head
= {list_next = 0xfffffe008ea286f8, list_prev = 0xfffffe008ea286f8}}, 
          rc_removed = {list_size = 40, list_offset = 0, list_head = {list_next
= 0xfffffe008ea28718, list_prev = 0xfffffe008ea28718}}, rc_count = 0, 
          rc_removed_count = 0}, rr_writer_wanted = 0, rr_track_all = 0},
{rr_lock = {lock_object = {lo_name = 0xffffffff813bcb70 "rrl->rr_lock", 
            lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1},
rr_cv = {cv_description = 0xffffffff8141c850 "rrl->rr_cv", 
          cv_waiters = 0}, rr_writer = 0x0, rr_anon_rcount = {rc_mtx =
{lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", 
              lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock =
1}, rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, 
            list_head = {list_next = 0xfffffe008ea287b0, list_prev =
0xfffffe008ea287b0}}, rc_removed = {list_size = 40, list_offset = 0, list_head
= {
              list_next = 0xfffffe008ea287d0, list_prev = 0xfffffe008ea287d0}},
rc_count = 0, rc_removed_count = 0}, rr_linked_rcount = {rc_mtx = {
            lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", lo_flags
= 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, 
          rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, list_head
= {list_next = 0xfffffe008ea28828, list_prev = 0xfffffe008ea28828}}, 
          rc_removed = {list_size = 40, list_offset = 0, list_head = {list_next
= 0xfffffe008ea28848, list_prev = 0xfffffe008ea28848}}, rc_count = 0, 
          rc_removed_count = 0}, rr_writer_wanted = 0, rr_track_all = 0},
{rr_lock = {lock_object = {lo_name = 0xffffffff813bcb70 "rrl->rr_lock", 
            lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1},
rr_cv = {cv_description = 0xffffffff8141c850 "rrl->rr_cv", 
          cv_waiters = 0}, rr_writer = 0x0, rr_anon_rcount = {rc_mtx =
{lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", 
              lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock =
1}, rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, 
            list_head = {list_next = 0xfffffe008ea288e0, list_prev =
0xfffffe008ea288e0}}, rc_removed = {list_size = 40, list_offset = 0, list_head
= {
              list_next = 0xfffffe008ea28900, list_prev = 0xfffffe008ea28900}},
rc_count = 0, rc_removed_count = 0}, rr_linked_rcount = {rc_mtx = {
            lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", lo_flags
= 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, 
          rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, list_head
= {list_next = 0xfffffe008ea28958, list_prev = 0xfffffe008ea28958}}, 
          rc_removed = {list_size = 40, list_offset = 0, list_head = {list_next
= 0xfffffe008ea28978, list_prev = 0xfffffe008ea28978}}, rc_count = 0, 
          rc_removed_count = 0}, rr_writer_wanted = 0, rr_track_all = 0},
{rr_lock = {lock_object = {lo_name = 0xffffffff813bcb70 "rrl->rr_lock", 
            lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1},
rr_cv = {cv_description = 0xffffffff8141c850 "rrl->rr_cv", 
          cv_waiters = 0}, rr_writer = 0x0, rr_anon_rcount = {rc_mtx =
{lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", 
              lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock =
1}, rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, 
            list_head = {list_next = 0xfffffe008ea28a10, list_prev =
0xfffffe008ea28a10}}, rc_removed = {list_size = 40, list_offset = 0, list_head
= {
              list_next = 0xfffffe008ea28a30, list_prev = 0xfffffe008ea28a30}},
rc_count = 0, rc_removed_count = 0}, rr_linked_rcount = {rc_mtx = {
            lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", lo_flags
= 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, 
          rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, list_head
= {list_next = 0xfffffe008ea28a88, list_prev = 0xfffffe008ea28a88}}, 
          rc_removed = {list_size = 40, list_offset = 0, list_head = {list_next
= 0xfffffe008ea28aa8, list_prev = 0xfffffe008ea28aa8}}, rc_count = 0, 
          rc_removed_count = 0}, rr_writer_wanted = 0, rr_track_all = 0},
{rr_lock = {lock_object = {lo_name = 0xffffffff813bcb70 "rrl->rr_lock", 
            lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1},
rr_cv = {cv_description = 0xffffffff8141c850 "rrl->rr_cv", 
          cv_waiters = 0}, rr_writer = 0x0, rr_anon_rcount = {rc_mtx =
{lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", 
--Type <RET> for more, q to quit, c to continue without paging--
              lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock =
1}, rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, 
            list_head = {list_next = 0xfffffe008ea28b40, list_prev =
0xfffffe008ea28b40}}, rc_removed = {list_size = 40, list_offset = 0, list_head
= {
              list_next = 0xfffffe008ea28b60, list_prev = 0xfffffe008ea28b60}},
rc_count = 0, rc_removed_count = 0}, rr_linked_rcount = {rc_mtx = {
            lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", lo_flags
= 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, 
          rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, list_head
= {list_next = 0xfffffe008ea28bb8, list_prev = 0xfffffe008ea28bb8}}, 
          rc_removed = {list_size = 40, list_offset = 0, list_head = {list_next
= 0xfffffe008ea28bd8, list_prev = 0xfffffe008ea28bd8}}, rc_count = 0, 
          rc_removed_count = 0}, rr_writer_wanted = 0, rr_track_all = 0},
{rr_lock = {lock_object = {lo_name = 0xffffffff813bcb70 "rrl->rr_lock", 
            lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1},
rr_cv = {cv_description = 0xffffffff8141c850 "rrl->rr_cv", 
          cv_waiters = 0}, rr_writer = 0x0, rr_anon_rcount = {rc_mtx =
{lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", 
              lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock =
1}, rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, 
            list_head = {list_next = 0xfffffe008ea28c70, list_prev =
0xfffffe008ea28c70}}, rc_removed = {list_size = 40, list_offset = 0, list_head
= {
              list_next = 0xfffffe008ea28c90, list_prev = 0xfffffe008ea28c90}},
rc_count = 0, rc_removed_count = 0}, rr_linked_rcount = {rc_mtx = {
            lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", lo_flags
= 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, 
          rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, list_head
= {list_next = 0xfffffe008ea28ce8, list_prev = 0xfffffe008ea28ce8}}, 
          rc_removed = {list_size = 40, list_offset = 0, list_head = {list_next
= 0xfffffe008ea28d08, list_prev = 0xfffffe008ea28d08}}, rc_count = 0, 
          rc_removed_count = 0}, rr_writer_wanted = 0, rr_track_all = 0},
{rr_lock = {lock_object = {lo_name = 0xffffffff813bcb70 "rrl->rr_lock", 
            lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1},
rr_cv = {cv_description = 0xffffffff8141c850 "rrl->rr_cv", 
          cv_waiters = 0}, rr_writer = 0x0, rr_anon_rcount = {rc_mtx =
{lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", 
              lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock =
1}, rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, 
            list_head = {list_next = 0xfffffe008ea28da0, list_prev =
0xfffffe008ea28da0}}, rc_removed = {list_size = 40, list_offset = 0, list_head
= {
              list_next = 0xfffffe008ea28dc0, list_prev = 0xfffffe008ea28dc0}},
rc_count = 0, rc_removed_count = 0}, rr_linked_rcount = {rc_mtx = {
            lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", lo_flags
= 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, 
          rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, list_head
= {list_next = 0xfffffe008ea28e18, list_prev = 0xfffffe008ea28e18}}, 
          rc_removed = {list_size = 40, list_offset = 0, list_head = {list_next
= 0xfffffe008ea28e38, list_prev = 0xfffffe008ea28e38}}, rc_count = 0, 
          rc_removed_count = 0}, rr_writer_wanted = 0, rr_track_all = 0},
{rr_lock = {lock_object = {lo_name = 0xffffffff813bcb70 "rrl->rr_lock", 
            lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1},
rr_cv = {cv_description = 0xffffffff8141c850 "rrl->rr_cv", 
          cv_waiters = 0}, rr_writer = 0x0, rr_anon_rcount = {rc_mtx =
{lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", 
              lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock =
1}, rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, 
            list_head = {list_next = 0xfffffe008ea28ed0, list_prev =
0xfffffe008ea28ed0}}, rc_removed = {list_size = 40, list_offset = 0, list_head
= {
              list_next = 0xfffffe008ea28ef0, list_prev = 0xfffffe008ea28ef0}},
rc_count = 0, rc_removed_count = 0}, rr_linked_rcount = {rc_mtx = {
            lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", lo_flags
= 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, 
          rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, list_head
= {list_next = 0xfffffe008ea28f48, list_prev = 0xfffffe008ea28f48}}, 
          rc_removed = {list_size = 40, list_offset = 0, list_head = {list_next
= 0xfffffe008ea28f68, list_prev = 0xfffffe008ea28f68}}, rc_count = 0, 
          rc_removed_count = 0}, rr_writer_wanted = 0, rr_track_all = 0},
{rr_lock = {lock_object = {lo_name = 0xffffffff813bcb70 "rrl->rr_lock", 
            lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1},
rr_cv = {cv_description = 0xffffffff8141c850 "rrl->rr_cv", 
          cv_waiters = 0}, rr_writer = 0x0, rr_anon_rcount = {rc_mtx =
{lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", 
              lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock =
1}, rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, 
            list_head = {list_next = 0xfffffe008ea29000, list_prev =
0xfffffe008ea29000}}, rc_removed = {list_size = 40, list_offset = 0, list_head
= {
              list_next = 0xfffffe008ea29020, list_prev = 0xfffffe008ea29020}},
rc_count = 0, rc_removed_count = 0}, rr_linked_rcount = {rc_mtx = {
            lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", lo_flags
= 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, 
          rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, list_head
= {list_next = 0xfffffe008ea29078, list_prev = 0xfffffe008ea29078}}, 
          rc_removed = {list_size = 40, list_offset = 0, list_head = {list_next
= 0xfffffe008ea29098, list_prev = 0xfffffe008ea29098}}, rc_count = 0, 
          rc_removed_count = 0}, rr_writer_wanted = 0, rr_track_all = 0},
{rr_lock = {lock_object = {lo_name = 0xffffffff813bcb70 "rrl->rr_lock", 
--Type <RET> for more, q to quit, c to continue without paging--
            lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1},
rr_cv = {cv_description = 0xffffffff8141c850 "rrl->rr_cv", 
          cv_waiters = 0}, rr_writer = 0x0, rr_anon_rcount = {rc_mtx =
{lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", 
              lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock =
1}, rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, 
            list_head = {list_next = 0xfffffe008ea29130, list_prev =
0xfffffe008ea29130}}, rc_removed = {list_size = 40, list_offset = 0, list_head
= {
              list_next = 0xfffffe008ea29150, list_prev = 0xfffffe008ea29150}},
rc_count = 0, rc_removed_count = 0}, rr_linked_rcount = {rc_mtx = {
            lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", lo_flags
= 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, 
          rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, list_head
= {list_next = 0xfffffe008ea291a8, list_prev = 0xfffffe008ea291a8}}, 
          rc_removed = {list_size = 40, list_offset = 0, list_head = {list_next
= 0xfffffe008ea291c8, list_prev = 0xfffffe008ea291c8}}, rc_count = 0, 
          rc_removed_count = 0}, rr_writer_wanted = 0, rr_track_all = 0},
{rr_lock = {lock_object = {lo_name = 0xffffffff813bcb70 "rrl->rr_lock", 
            lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1},
rr_cv = {cv_description = 0xffffffff8141c850 "rrl->rr_cv", 
          cv_waiters = 0}, rr_writer = 0x0, rr_anon_rcount = {rc_mtx =
{lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", 
              lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock =
1}, rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, 
            list_head = {list_next = 0xfffffe008ea29260, list_prev =
0xfffffe008ea29260}}, rc_removed = {list_size = 40, list_offset = 0, list_head
= {
              list_next = 0xfffffe008ea29280, list_prev = 0xfffffe008ea29280}},
rc_count = 0, rc_removed_count = 0}, rr_linked_rcount = {rc_mtx = {
            lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", lo_flags
= 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, 
          rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, list_head
= {list_next = 0xfffffe008ea292d8, list_prev = 0xfffffe008ea292d8}}, 
          rc_removed = {list_size = 40, list_offset = 0, list_head = {list_next
= 0xfffffe008ea292f8, list_prev = 0xfffffe008ea292f8}}, rc_count = 0, 
          rc_removed_count = 0}, rr_writer_wanted = 0, rr_track_all = 0},
{rr_lock = {lock_object = {lo_name = 0xffffffff813bcb70 "rrl->rr_lock", 
            lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1},
rr_cv = {cv_description = 0xffffffff8141c850 "rrl->rr_cv", 
          cv_waiters = 0}, rr_writer = 0x0, rr_anon_rcount = {rc_mtx =
{lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", 
              lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock =
1}, rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, 
            list_head = {list_next = 0xfffffe008ea29390, list_prev =
0xfffffe008ea29390}}, rc_removed = {list_size = 40, list_offset = 0, list_head
= {
              list_next = 0xfffffe008ea293b0, list_prev = 0xfffffe008ea293b0}},
rc_count = 0, rc_removed_count = 0}, rr_linked_rcount = {rc_mtx = {
            lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", lo_flags
= 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, 
          rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, list_head
= {list_next = 0xfffffe008ea29408, list_prev = 0xfffffe008ea29408}}, 
          rc_removed = {list_size = 40, list_offset = 0, list_head = {list_next
= 0xfffffe008ea29428, list_prev = 0xfffffe008ea29428}}, rc_count = 0, 
          rc_removed_count = 0}, rr_writer_wanted = 0, rr_track_all = 0},
{rr_lock = {lock_object = {lo_name = 0xffffffff813bcb70 "rrl->rr_lock", 
            lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1},
rr_cv = {cv_description = 0xffffffff8141c850 "rrl->rr_cv", 
          cv_waiters = 0}, rr_writer = 0x0, rr_anon_rcount = {rc_mtx =
{lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", 
              lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock =
1}, rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, 
            list_head = {list_next = 0xfffffe008ea294c0, list_prev =
0xfffffe008ea294c0}}, rc_removed = {list_size = 40, list_offset = 0, list_head
= {
              list_next = 0xfffffe008ea294e0, list_prev = 0xfffffe008ea294e0}},
rc_count = 0, rc_removed_count = 0}, rr_linked_rcount = {rc_mtx = {
            lock_object = {lo_name = 0xffffffff814893e6 "rc->rc_mtx", lo_flags
= 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, 
          rc_tracked = 0, rc_list = {list_size = 40, list_offset = 0, list_head
= {list_next = 0xfffffe008ea29538, list_prev = 0xfffffe008ea29538}}, 
          rc_removed = {list_size = 40, list_offset = 0, list_head = {list_next
= 0xfffffe008ea29558, list_prev = 0xfffffe008ea29558}}, rc_count = 0, 
          rc_removed_count = 0}, rr_writer_wanted = 0, rr_track_all = 0}}},
z_teardown_inactive_lock = {lock_object = {
      lo_name = 0xffffffff81441592 "zfsvfs->z_teardown_inactive_lock", lo_flags
= 40960000, lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, 
  z_all_znodes = {list_size = 272, list_offset = 240, list_head = {list_next =
0xfffff8000ba58420, list_prev = 0xfffff8006add8ca0}}, z_znodes_lock = {
    lock_object = {lo_name = 0xffffffff81489faa "zfsvfs->z_znodes_lock",
lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1}, 
  z_ctldir = 0xfffff8000ba05400, z_show_ctldir = 0, z_issnap = 0, z_vscan = 0,
z_use_fuids = 1, z_replay = 0, z_use_sa = 1, z_use_namecache = 1, 
  z_version = 5, z_shares_dir = 7, z_lock = {lock_object = {lo_name =
0xffffffff8138ce8d "zfsvfs->z_lock", lo_flags = 577830912, lo_data = 0, 
      lo_witness = 0x0}, sx_lock = 1}, z_userquota_obj = 0, z_groupquota_obj =
0, z_replay_eof = 0, z_attr_table = 0xfffff80013351b00, z_hold_mtx = {{
      lock_object = {lo_name = 0xffffffff81429501 "zfsvfs->z_hold_mtx[i]",
lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, 
--Type <RET> for more, q to quit, c to continue without paging--
      sx_lock = 1} <repeats 46 times>, {lock_object = {lo_name =
0xffffffff81429501 "zfsvfs->z_hold_mtx[i]", lo_flags = 577830912, lo_data = 0, 
        lo_witness = 0x0}, sx_lock = 18446735277813228928}, {lock_object =
{lo_name = 0xffffffff81429501 "zfsvfs->z_hold_mtx[i]", 
        lo_flags = 577830912, lo_data = 0, lo_witness = 0x0}, sx_lock = 1}
<repeats 17 times>}, z_unlinked_drain_task = {ta_link = {stqe_next = 0x0}, 
    ta_pending = 0, ta_priority = 0, ta_func = 0xffffffff804bdcd0
<zfsvfs_task_unlinked_drain>, ta_context = 0xfffffe008ea28000}}


(kgdb) print *zfsvfs->z_vfs
$5 = {mnt_mtx = {lock_object = {lo_name = 0xffffffff81393043 "struct mount
mtx", lo_flags = 16973824, lo_data = 0, lo_witness = 0x0}, mtx_lock = 0}, 
  mnt_gen = 1, mnt_list = {tqe_next = 0xfffff8001343a000, tqe_prev =
0xfffff800133fe028}, mnt_op = 0xffffffff81c64dc8 <zfs_vfsops>, 
  mnt_vfc = 0xffffffff81c64f18 <zfs_vfsconf>, mnt_vnodecovered =
0xfffff8001340ed20, mnt_syncer = 0xfffff8001340e960, mnt_ref = 896, 
  mnt_nvnodelist = {tqh_first = 0xfffff8001340eb40, tqh_last =
0xfffff80137ee83e0}, mnt_nvnodelistsize = 896, mnt_writeopcount = 0, 
  mnt_kern_flag = 1073742272, mnt_flag = 268439568, mnt_opt =
0xfffff8000ba57e10, mnt_optnew = 0x0, mnt_maxsymlinklen = 0, mnt_stat = {
    f_version = 538182936, f_type = 222, f_flags = 268439568, f_bsize = 512,
f_iosize = 16384, f_blocks = 404148032, f_bfree = 390589344, 
    f_bavail = 390589344, f_files = 390593281, f_ffree = 390589344,
f_syncwrites = 0, f_asyncwrites = 0, f_syncreads = 0, f_asyncreads = 0, 
    f_spare = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, f_namemax = 255, f_owner = 0,
f_fsid = {val = {-901290623, -1775448610}}, 
    f_charspare = '\000' <repeats 79 times>, f_fstypename = "zfs", '\000'
<repeats 12 times>, 
    f_mntfromname = "zroot/space/pgsql", '\000' <repeats 1006 times>,
f_mntonname = "/space/pgsql", '\000' <repeats 1011 times>}, 
  mnt_cred = 0xfffff800133ef900, mnt_data = 0xfffffe008ea28000, mnt_time = 0,
mnt_iosize_max = 65536, mnt_export = 0x0, mnt_label = 0x0, 
  mnt_hashseed = 127686091, mnt_lockref = 0, mnt_secondary_writes = 0,
mnt_secondary_accwrites = 0, mnt_susp_owner = 0x0, mnt_gjprovider = 0x0, 
  mnt_listmtx = {lock_object = {lo_name = 0xffffffff8142f7e7 "struct mount
vlist mtx", lo_flags = 16973824, lo_data = 0, lo_witness = 0x0}, 
    mtx_lock = 0}, mnt_activevnodelist = {tqh_first = 0xfffff802882ebb40,
tqh_last = 0xfffff8001340ec00}, mnt_activevnodelistsize = 438, 
  mnt_tmpfreevnodelist = {tqh_first = 0xfffff800244071e0, tqh_last =
0xfffff803c87a82a0}, mnt_tmpfreevnodelistsize = 11, mnt_explock = {
    lock_object = {lo_name = 0xffffffff81469cce "explock", lo_flags =
108199936, lo_data = 0, lo_witness = 0x0}, lk_lock = 1, lk_exslpfail = 0, 
    lk_timo = 0, lk_pri = 96}, mnt_upper_link = {tqe_next = 0x0, tqe_prev =
0x0}, mnt_uppers = {tqh_first = 0x0, tqh_last = 0xfffff800133fdaa8}}
(kgdb) 


courtland# zdb -dddd zroot/space/pgsql 33262
Dataset zroot/space/pgsql [ZPL], ID 184, cr_txg 37, 6.37G, 3905 objects, rootbp
DVA[0]=<0:95f64f000:1000> DVA[1]=<0:11e4fbc000:1000> [L0 DMU objset] fletcher4
uncompressed LE contiguous unique double size=800L/800P birth=925624L/925624P
fill=3905 cksum=d3563dce4:eed0e01cca3:a72f616c79c87:5770ae867335855

    Object  lvl   iblk   dblk  dsize  dnsize lsize   %full  type
zdb: dmu_bonus_hold(33262) failed, errno 2

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