handler () at /usr/src/sys/x86/x86/mp_x86.c:1530
#1  0xffffffff81009388 in ipi_nmi_handler ()
    at /usr/src/sys/x86/x86/mp_x86.c:1487
#2  0xffffffff810406a6 in trap (frame=3D0xfffffe003a507f30)
    at /usr/src/sys/amd64/amd64/trap.c:248
#3  <signal handler called>
#4  0xffffffff826d0e63 in spa_config_held (spa=3Dspa@entry=3D0xfffffe010f78=
4000,=20
    locks=3Dlocks@entry=3D22, rw=3Drw@entry=3DRW_READER)
    at /usr/src/sys/contrib/openzfs/module/zfs/spa_misc.c:585
#5  0xffffffff827b8170 in zio_create (pio=3Dpio@entry=3D0xfffffe035d2e0980,=
=20
    spa=3D0xfffffe010f784000, txg=3D51255565, bp=3D0x0, data=3D0xfffff801e7=
99d278,=20
    lsize=3Dlsize@entry=3D4096, psize=3D4096,=20
    done=3D0xffffffff82701610 <vdev_raidz_child_done>,=20
    private=3D0xfffff801e799d260, type=3DZIO_TYPE_WRITE,=20
    priority=3DZIO_PRIORITY_ASYNC_WRITE, flags=3D1048704, vd=3D0xfffffe0159=
5cb000,=20
    offset=3D1105181818880, zb=3D0xfffffe035d2e0980, stage=3DZIO_STAGE_READ=
Y,=20
    pipeline=3D(ZIO_STAGE_VDEV_IO_START | ZIO_STAGE_VDEV_IO_DONE |
ZIO_STAGE_VDEV_IO_ASSESS | ZIO_STAGE_DONE))
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:903
#6  0xffffffff827b9cfe in zio_vdev_child_io (pio=3D0xfffffe035d2e0980,=20
    bp=3D<optimized out>, vd=3D0xfffffe01595cb000, offset=3D1105181818880,=
=20
    data=3D<optimized out>, size=3D4096, type=3D2,=20
    priority=3DZIO_PRIORITY_ASYNC_WRITE, flags=3D1048704,=20
    done=3D0xffffffff82701610 <vdev_raidz_child_done>,=20
    private=3D0xfffff801e799d260)
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:1589
#7  0xffffffff82704fca in vdev_raidz_io_start_write (zio=3D0xfffffe035d2e09=
80,=20
    rr=3D0xfffff801e799d000, ashift=3D<optimized out>)
    at /usr/src/sys/contrib/openzfs/module/zfs/vdev_raidz.c:1649
#8  vdev_raidz_io_start (zio=3D0xfffffe035d2e0980)
    at /usr/src/sys/contrib/openzfs/module/zfs/vdev_raidz.c:1748
#9  0xffffffff827c27ce in zio_vdev_io_start (zio=3D0xfffffe035d2e0980)
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:4042
#10 0xffffffff827ba208 in __zio_execute (zio=3D<optimized out>)
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:2350
#11 zio_nowait (zio=3D<optimized out>)
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:2437
#12 0xffffffff826fd684 in vdev_mirror_io_start (zio=3D0xfffffe0344d06980)
    at /usr/src/sys/contrib/openzfs/module/zfs/vdev_mirror.c:687
#13 0xffffffff827c28d3 in zio_vdev_io_start (zio=3D0xfffffe0344d06980)
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:3917
#14 0xffffffff827baea8 in __zio_execute (zio=3D<optimized out>)
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:2350
#15 zio_execute (zio=3D<optimized out>)
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:2261
#16 0xffffffff80b75392 in taskqueue_run_locked (
    queue=3Dqueue@entry=3D0xfffff8000e2f1100)
    at /usr/src/sys/kern/subr_taskqueue.c:518
#17 0xffffffff80b76283 in taskqueue_thread_loop (
    arg=3Darg@entry=3D0xfffff80004baff30) at /usr/src/sys/kern/subr_taskque=
ue.c:830
#18 0xffffffff80ac0022 in fork_exit (
    callout=3D0xffffffff80b761b0 <taskqueue_thread_loop>,=20
    arg=3D0xfffff80004baff30, frame=3D0xfffffe01590b9f40)
    at /usr/src/sys/kern/kern_fork.c:1153
#19 <signal handler called>
#20 0x1a7a3fee163a3fea in ?? ()
Backtrace stopped: Cannot access memory at address 0xbd4da4a2b10da4a6

Tracing command "kernel", '\000' <repeats 13 times> pid 0 tid 100269 (CPU 7)
#0  cpustop_handler () at /usr/src/sys/x86/x86/mp_x86.c:1530
#1  0xffffffff81009388 in ipi_nmi_handler ()
    at /usr/src/sys/x86/x86/mp_x86.c:1487
#2  0xffffffff810406a6 in trap (frame=3D0xfffffe003a516f30)
    at /usr/src/sys/amd64/amd64/trap.c:248
#3  <signal handler called>
#4  trash_dtor (mem=3Dmem@entry=3D0xfffff8028709ddc8, size=3Dsize@entry=3D3=
92,=20
    arg=3Darg@entry=3D0xfffff80006f66200) at /usr/src/sys/vm/uma_dbg.c:101
#5  0xffffffff80eb65a0 in item_dtor (zone=3D0xfffffe010984b000,=20
    item=3D0xfffff8028709ddc8, size=3D392, udata=3D0xfffff80006f66200,=20
    skip=3DSKIP_NONE) at /usr/src/sys/vm/uma_core.c:3513
#6  uma_zfree_arg (zone=3D0xfffffe010984b000,=20
    item=3Ditem@entry=3D0xfffff8028709ddc8, udata=3D0xfffff80006f66200)
    at /usr/src/sys/vm/uma_core.c:4517
#7  0xffffffff8259ead1 in kmem_cache_free (cache=3D0xfffff80006f66200,=20
    buf=3D0x188, buf@entry=3D0xfffff8028709ddc8)
    at /usr/src/sys/contrib/openzfs/module/os/freebsd/spl/spl_kmem.c:209
#8  0xffffffff8260f28a in dbuf_destroy (db=3D0xfffff8028709ddc8)
    at /usr/src/sys/contrib/openzfs/module/zfs/dbuf.c:3116
#9  0xffffffff8261374e in dbuf_rele_and_unlock (db=3D0xfffff8028709df00,=20
    tag=3D<optimized out>, evicting=3D<optimized out>)
    at /usr/src/sys/contrib/openzfs/module/zfs/dbuf.c:3999
#10 0xffffffff8261b196 in dbuf_write_done (zio=3D0xfffffe0344bcaac0,=20
    buf=3D<optimized out>, vdb=3D0xfffff8028709ddc8)
    at /usr/src/sys/contrib/openzfs/module/zfs/dbuf.c:4858
#11 0xffffffff825f196f in arc_write_done (zio=3D0xfffffe0344bcaac0)
    at /usr/src/sys/contrib/openzfs/module/zfs/arc.c:6639
#12 0xffffffff827c45cf in zio_done (zio=3D0xfffffe0344bcaac0)
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:4988
#13 0xffffffff827baea8 in __zio_execute (zio=3D<optimized out>)
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:2350
#14 zio_execute (zio=3D<optimized out>)
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:2261
#15 0xffffffff80b75392 in taskqueue_run_locked (
    queue=3Dqueue@entry=3D0xfffff8000e2f2e00)
    at /usr/src/sys/kern/subr_taskqueue.c:518
#16 0xffffffff80b76283 in taskqueue_thread_loop (
    arg=3Darg@entry=3D0xfffff80004bafef0) at /usr/src/sys/kern/subr_taskque=
ue.c:830
#17 0xffffffff80ac0022 in fork_exit (
    callout=3D0xffffffff80b761b0 <taskqueue_thread_loop>,=20
    arg=3D0xfffff80004bafef0, frame=3D0xfffffe0159104f40)
    at /usr/src/sys/kern/kern_fork.c:1153
#18 <signal handler called>
#19 0xa9ff18e6a5bf18e2 in ?? ()
Backtrace stopped: Cannot access memory at address 0xec883aa028883ae

Tracing command "kernel", '\000' <repeats 13 times> pid 0 tid 100271 (CPU 8)
#0  cpustop_handler () at /usr/src/sys/x86/x86/mp_x86.c:1530
#1  0xffffffff81009388 in ipi_nmi_handler ()
    at /usr/src/sys/x86/x86/mp_x86.c:1487
#2  0xffffffff810406a6 in trap (frame=3D0xfffffe003a525f30)
    at /usr/src/sys/amd64/amd64/trap.c:248
#3  <signal handler called>
#4  arc_write_done (zio=3Dzio@entry=3D0xfffffe0344bf2980)
    at /usr/src/sys/contrib/openzfs/module/zfs/arc.c:6564
#5  0xffffffff827c45cf in zio_done (zio=3D0xfffffe0344bf2980)
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:4988
#6  0xffffffff827baea8 in __zio_execute (zio=3D<optimized out>)
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:2350
#7  zio_execute (zio=3D<optimized out>)
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:2261
#8  0xffffffff80b75392 in taskqueue_run_locked (
    queue=3Dqueue@entry=3D0xfffff8000e2f2d00)
    at /usr/src/sys/kern/subr_taskqueue.c:518
#9  0xffffffff80b76283 in taskqueue_thread_loop (
    arg=3Darg@entry=3D0xfffff80004bafee0) at /usr/src/sys/kern/subr_taskque=
ue.c:830
#10 0xffffffff80ac0022 in fork_exit (
    callout=3D0xffffffff80b761b0 <taskqueue_thread_loop>,=20
    arg=3D0xfffff80004bafee0, frame=3D0xfffffe015910ef40)
    at /usr/src/sys/kern/kern_fork.c:1153
#11 <signal handler called>
#12 0xbe5f9160b21f9164 in ?? ()
Backtrace stopped: Cannot access memory at address 0x19684a3c15280a28

Tracing command "kernel", '\000' <repeats 13 times> pid 0 tid 100273 (CPU 9)
#0  cpustop_handler () at /usr/src/sys/x86/x86/mp_x86.c:1530
#1  0xffffffff81009388 in ipi_nmi_handler ()
    at /usr/src/sys/x86/x86/mp_x86.c:1487
#2  0xffffffff810406a6 in trap (frame=3D0xfffffe003a534f30)
    at /usr/src/sys/amd64/amd64/trap.c:248
#3  <signal handler called>
#4  slab_item_index (slab=3D0xfffff80483ec7be8, keg=3D0xfffff80006f38a80,=20
    item=3D0xfffff804810a0000) at /usr/src/sys/vm/uma_int.h:435
#5  uma_dbg_free (zone=3Dzone@entry=3D0xfffffe0109828000, slab=3D0xfffff804=
83ec7be8,=20
    slab@entry=3D0xfffff80006f65240, item=3Ditem@entry=3D0xfffff804810a0000)
    at /usr/src/sys/vm/uma_core.c:5816
#6  0xffffffff80eb6566 in item_dtor (zone=3D0xfffffe0109828000,=20
    item=3D0xfffff804810a0000, size=3D4096, udata=3D0xfffff80006f65240,=20
    skip=3DSKIP_NONE) at /usr/src/sys/vm/uma_core.c:3501
#7  uma_zfree_arg (zone=3D0xfffffe0109828000, item=3D0xfffff804810a0000,=20
    udata=3D0xfffff80006f65240) at /usr/src/sys/vm/uma_core.c:4517
#8  0xffffffff8259ead1 in kmem_cache_free (cache=3D0xfffff804810a0000,=20
    buf=3D0xfffff80006f38a80)
    at /usr/src/sys/contrib/openzfs/module/os/freebsd/spl/spl_kmem.c:209
#9  0xffffffff827b7982 in zio_data_buf_free (buf=3D0xfffff80006f38a80,=20
    size=3D<optimized out>) at /usr/src/sys/contrib/openzfs/module/zfs/zio.=
c:421
#10 0xffffffff825e02c6 in abd_free_linear (abd=3D0xfffff8061b8a3e00)
    at /usr/src/sys/contrib/openzfs/module/zfs/abd.c:244
#11 abd_free (abd=3D0xfffff8061b8a3e00)
    at /usr/src/sys/contrib/openzfs/module/zfs/abd.c:306
#12 0xffffffff8270059f in vdev_raidz_row_free (rr=3D0xfffff803e72eb000)
    at /usr/src/sys/contrib/openzfs/module/zfs/vdev_raidz.c:145
#13 vdev_raidz_map_free (rm=3D0xfffff804f1092200)
    at /usr/src/sys/contrib/openzfs/module/zfs/vdev_raidz.c:160
#14 0xffffffff827c2db6 in zio_vdev_io_assess (zio=3D0xfffffe0383e9a7c0)
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:4158
#15 0xffffffff827baea8 in __zio_execute (zio=3D<optimized out>)
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:2350
#16 zio_execute (zio=3D<optimized out>)
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:2261
#17 0xffffffff80b75392 in taskqueue_run_locked (
    queue=3Dqueue@entry=3D0xfffff8000e2f2d00)
    at /usr/src/sys/kern/subr_taskqueue.c:518
#18 0xffffffff80b76283 in taskqueue_thread_loop (
    arg=3Darg@entry=3D0xfffff80004bafee0) at /usr/src/sys/kern/subr_taskque=
ue.c:830
#19 0xffffffff80ac0022 in fork_exit (
    callout=3D0xffffffff80b761b0 <taskqueue_thread_loop>,=20
    arg=3D0xfffff80004bafee0, frame=3D0xfffffe0159118f40)
    at /usr/src/sys/kern/kern_fork.c:1153
#20 <signal handler called>
#21 0xc4527342c8127346 in ?? ()
Backtrace stopped: Cannot access memory at address 0x6365e80e6f25e80a

Tracing command "kernel", '\000' <repeats 13 times> pid 0 tid 100272 (CPU 1=
0)
#0  cpustop_handler () at /usr/src/sys/x86/x86/mp_x86.c:1530
#1  0xffffffff81009388 in ipi_nmi_handler ()
    at /usr/src/sys/x86/x86/mp_x86.c:1487
#2  0xffffffff810406a6 in trap (frame=3D0xfffffe003a543f30)
    at /usr/src/sys/amd64/amd64/trap.c:248
#3  <signal handler called>
#4  0xffffffff826d48b4 in bp_get_dsize_sync (spa=3D0xfffffe010f784000,=20
    bp=3Dbp@entry=3D0xfffffe0327b7da00)
    at /usr/src/sys/contrib/openzfs/module/zfs/spa_misc.c:2140
#5  0xffffffff82652161 in dsl_dataset_block_born (
    ds=3Dds@entry=3D0xfffff80037ed2000, bp=3Dbp@entry=3D0xfffffe0327b7da00,=
=20
    tx=3Dtx@entry=3D0xfffff8043315e200)
    at /usr/src/sys/contrib/openzfs/module/zfs/dsl_dataset.c:140
#6  0xffffffff8261ad22 in dbuf_write_done (zio=3D0xfffffe0344be5ac0,=20
    buf=3D<optimized out>, vdb=3D0xfffff8021e32dc40)
    at /usr/src/sys/contrib/openzfs/module/zfs/dbuf.c:4810
#7  0xffffffff825f196f in arc_write_done (zio=3D0xfffffe0344be5ac0)
    at /usr/src/sys/contrib/openzfs/module/zfs/arc.c:6639
#8  0xffffffff827c45cf in zio_done (zio=3D0xfffffe0344be5ac0)
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:4988
#9  0xffffffff827baea8 in __zio_execute (zio=3D<optimized out>)
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:2350
#10 zio_execute (zio=3D<optimized out>)
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:2261
#11 0xffffffff80b75392 in taskqueue_run_locked (
    queue=3Dqueue@entry=3D0xfffff8000e2f2d00)
    at /usr/src/sys/kern/subr_taskqueue.c:518
#12 0xffffffff80b76283 in taskqueue_thread_loop (
    arg=3Darg@entry=3D0xfffff80004bafee0) at /usr/src/sys/kern/subr_taskque=
ue.c:830
#13 0xffffffff80ac0022 in fork_exit (
    callout=3D0xffffffff80b761b0 <taskqueue_thread_loop>,=20
    arg=3D0xfffff80004bafee0, frame=3D0xfffffe0159109f40)
    at /usr/src/sys/kern/kern_fork.c:1153
#14 <signal handler called>
#15 0xa17e1b53ad3e1b57 in ?? ()
Backtrace stopped: Cannot access memory at address 0x1649801f0a09801b

Tracing command "kernel", '\000' <repeats 13 times> pid 0 tid 100270 (CPU 1=
1)
#0  cpustop_handler () at /usr/src/sys/x86/x86/mp_x86.c:1530
#1  0xffffffff81009388 in ipi_nmi_handler ()
    at /usr/src/sys/x86/x86/mp_x86.c:1487
#2  0xffffffff810406a6 in trap (frame=3D0xfffffe003a552f30)
    at /usr/src/sys/amd64/amd64/trap.c:248
#3  <signal handler called>
#4  zfs_refcount_remove_many (rc=3Drc@entry=3D0xfffff8048def2098,=20
    number=3Dnumber@entry=3D1, holder=3D0xfffff8048def2000)
    at /usr/src/sys/contrib/openzfs/module/zfs/refcount.c:176
#5  0xffffffff826ab722 in zfs_refcount_remove (rc=3Drc@entry=3D0xfffff8048d=
ef2098,=20
    holder=3D0xfffff8048def2000)
    at /usr/src/sys/contrib/openzfs/module/zfs/refcount.c:212
#6  0xffffffff825e7200 in remove_reference (hdr=3Dhdr@entry=3D0xfffff8048de=
f2000,=20
    tag=3Dtag@entry=3D0xfffff8048def2000)
    at /usr/src/sys/contrib/openzfs/module/zfs/arc.c:2314
#7  0xffffffff825f182c in arc_write_done (zio=3D0xfffffe0344be4c80)
    at /usr/src/sys/contrib/openzfs/module/zfs/arc.c:6629
#8  0xffffffff827c45cf in zio_done (zio=3D0xfffffe0344be4c80)
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:4988
#9  0xffffffff827baea8 in __zio_execute (zio=3D<optimized out>)
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:2350
#10 zio_execute (zio=3D<optimized out>)
    at /usr/src/sys/contrib/openzfs/module/zfs/zio.c:2261
#11 0xffffffff80b75392 in taskqueue_run_locked (
    queue=3Dqueue@entry=3D0xfffff8000e2f2d00)
    at /usr/src/sys/kern/subr_taskqueue.c:518
#12 0xffffffff80b76283 in taskqueue_thread_loop (
    arg=3Darg@entry=3D0xfffff80004bafee0) at /usr/src/sys/kern/subr_taskque=
ue.c:830
#13 0xffffffff80ac0022 in fork_exit (
    callout=3D0xffffffff80b761b0 <taskqueue_thread_loop>,=20
    arg=3D0xfffff80004bafee0, frame=3D0xfffffe01590fff40)
    at /usr/src/sys/kern/kern_fork.c:1153
#14 <signal handler called>
#15 0xfc4cec75700cec71 in ?? ()
Backtrace stopped: Cannot access memory at address 0xdb7b7739d73b773d

(kgdb)

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