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Matthew Ahrens 5e097c67f1 OpenZFS 9443 - panic when scrub a v10 pool 
While expanding stored pools, we ran into a panic using an old pool.

Steps to reproduce:

    $ sudo zpool create -o version=2 test c2t1d0
    $ sudo cp /etc/passwd /test/foo
    $ sudo zpool attach test c2t1d0 c2t2d0

We'll get this panic:

    ffffff000fc0e5e0 unix:real_mode_stop_cpu_stage2_end+b27c ()
    ffffff000fc0e6f0 unix:trap+dc8 ()
    ffffff000fc0e700 unix:cmntrap+e6 ()
    ffffff000fc0e860 zfs:dsl_scan_visitds+1ff ()
    ffffff000fc0ea20 zfs:dsl_scan_visit+fe ()
    ffffff000fc0ea80 zfs:dsl_scan_sync+1b3 ()
    ffffff000fc0eb60 zfs:spa_sync+435 ()
    ffffff000fc0ec20 zfs:txg_sync_thread+23f ()
    ffffff000fc0ec30 unix:thread_start+8 ()

The problem is a bad trap accessing a NULL pointer. We're looking for
the dp_origin_snap of a dsl_pool_t, but version 2 didn't have that. The
system will go into a reboot loop at this point, and the dump won't be
accessible except by removing the cache file from within the recovery
environment.

This impacts any sort of scrub or resilver on version <11 pools, e.g.:

    $ zpool create -o version=10 test c2t1d0
    $ zpool scrub test

Authored by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Serapheim Dimitropoulos <serapheim.dimitro@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Andriy Gapon <avg@FreeBSD.org>
Reviewed by: Igor Kozhukhov <igor@dilos.org>
Approved by: Dan McDonald <danmcd@joyent.com>
Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>

OpenZFS-issue: https://www.illumos.org/issues/9443
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/010eed29
Closes #7501
2018-05-04 10:47:10 -07:00
..
abd.c Update for cppcheck v1.80 2017-11-18 14:08:00 -08:00
arc.c Add support for decryption faults in zinject 2018-05-02 15:36:20 -07:00
blkptr.c Undo c89 workarounds to match with upstream 2017-11-04 13:25:13 -07:00
bplist.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
bpobj.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
bptree.c Native Encryption for ZFS on Linux 2017-08-14 10:36:48 -07:00
bqueue.c Call cv_signal() with mutex held 2017-06-26 14:36:49 -07:00
dbuf_stats.c Add dbuf hash and dbuf cache kstats 2018-01-29 10:24:52 -08:00
dbuf.c assertion in arc_release() during encrypted receive 2018-04-17 11:06:54 -07:00
ddt_zap.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
ddt.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
dmu_diff.c Fix issues found with zfs diff 2018-05-01 11:24:20 -07:00
dmu_object.c Fix object reclaim when using large dnodes 2018-04-17 11:13:57 -07:00
dmu_objset.c Adopt pyzfs from ClusterHQ 2018-05-01 10:33:35 -07:00
dmu_send.c Fix issues with raw sends of spill blocks 2018-04-17 11:19:03 -07:00
dmu_traverse.c Fix hung z_zvol tasks during 'zfs receive' 2018-03-30 12:10:01 -07:00
dmu_tx.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
dmu_zfetch.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
dmu.c assertion in arc_release() during encrypted receive 2018-04-17 11:06:54 -07:00
dnode_sync.c Raw sends must be able to decrease nlevels 2018-02-02 11:43:11 -08:00
dnode.c Fix object reclaim when using large dnodes 2018-04-17 11:13:57 -07:00
dsl_bookmark.c Undo c89 workarounds to match with upstream 2017-11-04 13:25:13 -07:00
dsl_crypt.c Add support for decryption faults in zinject 2018-05-02 15:36:20 -07:00
dsl_dataset.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
dsl_deadlist.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
dsl_deleg.c Performance optimization of AVL tree comparator functions 2016-08-31 14:35:34 -07:00
dsl_destroy.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
dsl_dir.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
dsl_pool.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
dsl_prop.c Native Encryption for ZFS on Linux 2017-08-14 10:36:48 -07:00
dsl_scan.c OpenZFS 9443 - panic when scrub a v10 pool 2018-05-04 10:47:10 -07:00
dsl_synctask.c Illumos 4951 - ZFS administrative commands should use reserved space 2015-05-04 09:41:10 -07:00
dsl_userhold.c Undo c89 workarounds to match with upstream 2017-11-04 13:25:13 -07:00
edonr_zfs.c DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
fm.c Linux 4.14 compat: CONFIG_GCC_PLUGIN_RANDSTRUCT 2017-11-28 17:33:48 -06:00
gzip.c Resolve QAT issues with incompressible data 2018-03-29 17:40:34 -07:00
hkdf.c Encryption patch follow-up 2017-10-11 16:54:48 -04:00
lz4.c Fix LZ4_uncompress_unknownOutputSize caused panic 2017-05-19 13:45:46 -07:00
lzjb.c Change KM_PUSHPAGE -> KM_SLEEP 2015-01-16 14:41:26 -08:00
Makefile.in OpenZFS 9079 - race condition in starting and ending condensing thread for indirect vdevs 2018-04-14 12:23:53 -07:00
metaslab.c Silence compile-time warning on unused variable 2018-05-01 11:15:54 -07:00
mmp.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
multilist.c Undo c89 workarounds to match with upstream 2017-11-04 13:25:13 -07:00
pathname.c Add pn_alloc()/pn_free() functions 2016-04-21 09:49:25 -07:00
policy.c Take user namespaces into account in policy checks 2018-03-07 15:40:42 -08:00
qat_compress.c Fix inst_num overflow in qat_crypt.c 2018-05-01 20:44:24 -07:00
qat_crypt.c Fix inst_num overflow in qat_crypt.c 2018-05-01 20:44:24 -07:00
qat.c SHA256 QAT acceleration 2018-03-15 10:53:58 -07:00
qat.h Resolve QAT issues with incompressible data 2018-03-29 17:40:34 -07:00
range_tree.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
refcount.c Linux 4.11 compat: avoid refcount_t name conflict 2017-02-28 16:10:18 -08:00
rrwlock.c Fix spelling 2017-01-03 11:31:18 -06:00
sa.c Project Quota on ZFS 2018-02-13 14:54:54 -08:00
sha256.c SHA256 QAT acceleration 2018-03-15 10:53:58 -07:00
skein_zfs.c DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
spa_boot.c Add linux kernel module support 2010-08-31 13:41:58 -07:00
spa_config.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
spa_errlog.c Native Encryption for ZFS on Linux 2017-08-14 10:36:48 -07:00
spa_history.c Emit history events for 'zpool create' 2017-10-23 09:45:59 -07:00
spa_misc.c OpenZFS 9236 - nuke spa_dbgmsg 2018-04-30 10:19:48 -07:00
spa_stats.c Record skipped MMP writes in multihost_history 2018-03-06 15:15:15 -08:00
spa.c OpenZFS 7638 - Refactor spa_load_impl into several functions 2018-04-16 12:24:23 -07:00
space_map.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
space_reftree.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
trace.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
txg.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
uberblock.c Multi-modifier protection (MMP) 2017-07-13 13:54:00 -04:00
unique.c Performance optimization of AVL tree comparator functions 2016-08-31 14:35:34 -07:00
vdev_cache.c Undo c89 workarounds to match with upstream 2017-11-04 13:25:13 -07:00
vdev_disk.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
vdev_file.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
vdev_indirect_births.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
vdev_indirect_mapping.c Revert "OpenZFS 9036 - zfs: duplicate 'const' declaration specifier" 2018-04-16 12:44:40 -07:00
vdev_indirect.c Fix CONFIG_GCC_PLUGIN_RANDSTRUCT build 2018-04-20 09:53:25 -07:00
vdev_label.c OpenZFS 9192 - explicitly pass good_writes to vdev_uberblock/label_sync 2018-04-17 10:45:47 -07:00
vdev_mirror.c OpenZFS 9290 - device removal reduces redundancy of mirrors 2018-04-14 12:21:39 -07:00
vdev_missing.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
vdev_queue.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
vdev_raidz_math_aarch64_neon_common.h ABD raidz NEON support 2016-11-29 14:34:33 -08:00
vdev_raidz_math_aarch64_neon.c codebase style improvements for OpenZFS 6459 port 2017-01-22 13:25:40 -08:00
vdev_raidz_math_aarch64_neonx2.c ABD raidz NEON support 2016-11-29 14:34:33 -08:00
vdev_raidz_math_avx2.c ABD raidz avx512f support 2016-11-29 14:34:33 -08:00
vdev_raidz_math_avx512bw.c ABD: Adapt avx512bw raidz assembly 2016-12-15 17:31:33 -08:00
vdev_raidz_math_avx512f.c Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
vdev_raidz_math_impl.h codebase style improvements for OpenZFS 6459 port 2017-01-22 13:25:40 -08:00
vdev_raidz_math_scalar.c ABD Vectorized raidz 2016-11-29 14:34:33 -08:00
vdev_raidz_math_sse2.c ABD raidz avx512f support 2016-11-29 14:34:33 -08:00
vdev_raidz_math_ssse3.c codebase style improvements for OpenZFS 6459 port 2017-01-22 13:25:40 -08:00
vdev_raidz_math.c OpenZFS 7431 - ZFS Channel Programs 2018-02-08 15:28:18 -08:00
vdev_raidz.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
vdev_removal.c OpenZFS 9434 - Speculative prefetch is blocked by device removal code 2018-04-30 13:05:55 -07:00
vdev_root.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
vdev.c OpenZFS 9084 - spa_*_ashift must ignore spare devices 2018-04-14 12:40:52 -07:00
zap_leaf.c Fix ENOSPC in "Handle zap_add() failures in ..." 2018-04-18 14:19:50 -07:00
zap_micro.c Fix ENOSPC in "Handle zap_add() failures in ..." 2018-04-18 14:19:50 -07:00
zap.c Fix ENOSPC in "Handle zap_add() failures in ..." 2018-04-18 14:19:50 -07:00
zcp_get.c Fix coverity defects: zfs channel programs 2018-02-20 11:19:42 -08:00
zcp_global.c OpenZFS 8600 - ZFS channel programs - snapshot 2018-02-08 15:29:24 -08:00
zcp_iter.c OpenZFS 7431 - ZFS Channel Programs 2018-02-08 15:28:18 -08:00
zcp_synctask.c Fix coverity defects: zfs channel programs 2018-02-20 11:19:42 -08:00
zcp.c OpenZFS 8677 - Open-Context Channel Programs 2018-02-08 16:05:57 -08:00
zfeature.c Undo c89 workarounds to match with upstream 2017-11-04 13:25:13 -07:00
zfs_acl.c OpenZFS 9213 - zfs: sytem typo 2018-04-15 10:59:13 -07:00
zfs_byteswap.c Add linux kernel module support 2010-08-31 13:41:58 -07:00
zfs_ctldir.c Use SET_ERROR for constant non-zero return codes 2017-08-02 21:16:12 -07:00
zfs_debug.c enable zfs_dbgmsg() by default, without dprintf() 2018-03-21 15:37:32 -07:00
zfs_dir.c Fix ENOSPC in "Handle zap_add() failures in ..." 2018-04-18 14:19:50 -07:00
zfs_fm.c Decryption error handling improvements 2018-03-31 11:12:51 -07:00
zfs_fuid.c Rename zfs_sb_t -> zfsvfs_t 2017-03-10 09:51:33 -08:00
zfs_ioctl.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
zfs_log.c Project Quota on ZFS 2018-02-13 14:54:54 -08:00
zfs_onexit.c zfsdev_getminor() should check for invalid file handles 2015-06-22 17:02:13 -07:00
zfs_ratelimit.c Change checksum & IO delay ratelimit values 2018-03-04 17:34:51 -08:00
zfs_replay.c Project Quota on ZFS 2018-02-13 14:54:54 -08:00
zfs_rlock.c Fix spelling 2017-01-03 11:31:18 -06:00
zfs_sa.c Project Quota on ZFS 2018-02-13 14:54:54 -08:00
zfs_vfsops.c ZIL claiming should not start user accounting 2018-02-20 16:27:31 -08:00
zfs_vnops.c RHEL 7.5 compat: FMODE_KABI_ITERATE 2018-05-02 15:01:24 -07:00
zfs_znode.c Project Quota on ZFS 2018-02-13 14:54:54 -08:00
zil.c OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
zio_checksum.c Undo c89 workarounds to match with upstream 2017-11-04 13:25:13 -07:00
zio_compress.c Undo c89 workarounds to match with upstream 2017-11-04 13:25:13 -07:00
zio_crypt.c Add support for decryption faults in zinject 2018-05-02 15:36:20 -07:00
zio_inject.c Add support for decryption faults in zinject 2018-05-02 15:36:20 -07:00
zio.c Add support for decryption faults in zinject 2018-05-02 15:36:20 -07:00
zle.c Fix zle_decompress out of bound access 2018-02-09 10:08:05 -08:00
zpl_ctldir.c RHEL 7.5 compat: FMODE_KABI_ITERATE 2018-05-02 15:01:24 -07:00
zpl_export.c Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
zpl_file.c RHEL 7.5 compat: FMODE_KABI_ITERATE 2018-05-02 15:01:24 -07:00
zpl_inode.c Linux 4.12 compat: CURRENT_TIME removed 2017-05-10 09:30:48 -07:00
zpl_super.c Allow mounting datasets more than once 2018-04-13 10:44:05 -07:00
zpl_xattr.c Update for cppcheck v1.80 2017-11-18 14:08:00 -08:00
zrlock.c Fix race in trace point in zrl_add_impl 2018-03-12 11:27:02 -07:00
zthr.c Avoid Linux hung task message in ZTHR 2018-04-15 15:12:28 -07:00
zvol.c Linux compat 4.16: blk_queue_flag_{set,clear} 2018-04-10 10:32:14 -07:00