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Date:      Tue, 12 Mar 2019 20:47:39 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 232544] general protection fault while in kernel mode - vdev_indirect
Message-ID:  <bug-232544-227-OraSX4Mh6A@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-232544-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-232544-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D232544

--- Comment #2 from Jeremy Faulkner <gldisater@gmail.com> ---
It's been months since this pool has had a vdev removed, it had 8MB used for
removed device remapping. I attempted to delete old snapshots from before t=
he
last vdev had been removed and had this crash. While I was deleting old
snapshots the pool was also scrubbing and had a steady io load from jails
running on the pool.

The core dump is over 15GB. I'll try and upload it later.=20


FreeBSD constans 12.0-STABLE FreeBSD 12.0-STABLE #6 r344436M: Thu Feb 21
13:40:08 EST 2019=20=20=20=20
gldisater@constans:/usr/obj/usr/src/amd64.amd64/sys/GENERIC  amd64


(kgdb) bt
#0  __curthread () at ./machine/pcpu.h:230
#1  doadump (textdump=3D<optimized out>) at /usr/src/sys/kern/kern_shutdown=
.c:366
#2  0xffffffff80bc361a in kern_reboot (howto=3D260) at
/usr/src/sys/kern/kern_shutdown.c:446
#3  0xffffffff80bc3a90 in vpanic (fmt=3D<optimized out>, ap=3D0xfffffe00ec0=
40350)
at /usr/src/sys/kern/kern_shutdown.c:872
#4  0xffffffff80bc3873 in panic (fmt=3D<unavailable>) at
/usr/src/sys/kern/kern_shutdown.c:799
#5  0xffffffff8109b539 in trap_fatal (frame=3D0xfffffe00ec040540, eva=3D0) =
at
/usr/src/sys/amd64/amd64/trap.c:929
#6  0xffffffff8109b599 in trap_pfault (frame=3D0xfffffe00ec040540, usermode=
=3D0) at
/usr/src/sys/amd64/amd64/trap.c:765
#7  0xffffffff8109abaf in trap (frame=3D0xfffffe00ec040540) at
/usr/src/sys/amd64/amd64/trap.c:441
#8  <signal handler called>
#9  vdev_indirect_mapping_duplicate_adjacent_entries (vd=3D0xfffff8012a7a00=
00,
offset=3D402853027840, asize=3D4096, copied_entries=3D<optimized out>)
    at
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_indirect.c:974
#10 vdev_indirect_remap (vd=3D0xfffff8012a7a0000, offset=3D<optimized out>,
asize=3D<optimized out>, func=3D0xffffffff82cd5860 <vdev_indirect_gather_sp=
lits>,
arg=3D0xfffff80402c7d418)
    at
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_indirect.c:1060
#11 0xffffffff82cd4a6c in vdev_indirect_io_start (zio=3D0xfffff80402c7d418)=
 at
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_indirect.c:1282
#12 0xffffffff82d05656 in zio_vdev_io_start (zio=3D0xfffff80402c7d418) at
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c:3341
#13 0xffffffff82d01aac in zio_execute (zio=3D0xfffff80402c7d418) at
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c:1785
#14 0xffffffff82d013cb in zio_nowait (zio=3D0xfffff80402c7d418) at
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c:1841
#15 0xffffffff82cdaeec in vdev_mirror_io_start (zio=3D<optimized out>) at
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_mirror.c:560
#16 0xffffffff82d05509 in zio_vdev_io_start (zio=3D0xfffff80262174000) at
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c:3188
#17 0xffffffff82d01aac in zio_execute (zio=3D0xfffff80262174000) at
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c:1785
#18 0xffffffff82d013cb in zio_nowait (zio=3D0xfffff80262174000) at
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c:1841
#19 0xffffffff82c9de90 in scan_exec_io (dp=3D0xfffff8097b629000,
bp=3D0xfffffe00ec0409c8, zio_flags=3D8388784, zb=3D0xfffff80ebc23dbc8,
queue=3D0xfffff80ed63c8600)
    at /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_scan.c:3=
682
#20 0xffffffff82c9ff96 in scan_io_queue_issue (queue=3D0xfffff80ed63c8600,
io_list=3D0x80) at
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_scan.c:2587
#21 scan_io_queues_run_one (arg=3D0xfffff80ed63c8600) at
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_scan.c:2766
#22 0xffffffff82c30da0 in taskq_run (arg=3D0xfffff810357eeea0, pending=3D-5=
12) at
/usr/src/sys/cddl/compat/opensolaris/kern/opensolaris_taskq.c:110
#23 0xffffffff80c21894 in taskqueue_run_locked (queue=3D0xfffff80b1fc9db00)=
 at
/usr/src/sys/kern/subr_taskqueue.c:467
#24 0xffffffff80c22c18 in taskqueue_thread_loop (arg=3D<optimized out>) at
/usr/src/sys/kern/subr_taskqueue.c:773
#25 0xffffffff80b84c32 in fork_exit (callout=3D0xffffffff80c22b80
<taskqueue_thread_loop>, arg=3D0xfffff811c3072590, frame=3D0xfffffe00ec040c=
00) at
/usr/src/sys/kern/kern_fork.c:1059
#26 <signal handler called>
(kgdb)

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