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loli10K 2e8c315fc6 Device removal panics on 32-bit systems
The issue is caused by an incorrect usage of the sizeof() operator
in vdev_obsolete_sm_object(): on 64-bit systems this is not an issue
since both "uint64_t" and "uint64_t*" are 8 bytes in size. However on
32-bit systems pointers are 4 bytes long which is not supported by
zap_lookup_impl(). Trying to remove a top-level vdev on a 32-bit system
will cause the following failure:

VERIFY3(0 == vdev_obsolete_sm_object(vd, &obsolete_sm_object)) failed (0 == 22)
PANIC at vdev_indirect.c:833:vdev_indirect_sync_obsolete()
Showing stack for process 1315
CPU: 6 PID: 1315 Comm: txg_sync Tainted: P           OE   4.4.69+ #2
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-2.fc27 04/01/2014
 c1abc6e7 0ae10898 00000286 d4ac3bc0 c14397bc da4cd7d8 d4ac3bf0 d4ac3bd0
 d790e7ce d7911cc1 00000523 d4ac3d00 d790e7d7 d7911ce4 da4cd7d8 00000341
 da4ce664 da4cd8c0 da33fa6e 49524556 28335946 3d3d2030 65647620 626f5f76
Call Trace:
 [<>] dump_stack+0x58/0x7c
 [<>] spl_dumpstack+0x23/0x27 [spl]
 [<>] spl_panic.cold.0+0x5/0x41 [spl]
 [<>] ? dbuf_rele+0x3e/0x90 [zfs]
 [<>] ? zap_lookup_norm+0xbe/0xe0 [zfs]
 [<>] ? zap_lookup+0x57/0x70 [zfs]
 [<>] ? vdev_obsolete_sm_object+0x102/0x12b [zfs]
 [<>] vdev_indirect_sync_obsolete+0x3e1/0x64d [zfs]
 [<>] ? txg_verify+0x1d/0x160 [zfs]
 [<>] ? dmu_tx_create_dd+0x80/0xc0 [zfs]
 [<>] vdev_sync+0xbf/0x550 [zfs]
 [<>] ? mutex_lock+0x10/0x30
 [<>] ? txg_list_remove+0x9f/0x1a0 [zfs]
 [<>] ? zap_contains+0x4d/0x70 [zfs]
 [<>] spa_sync+0x9f1/0x1b10 [zfs]
 ...
 [<>] ? kthread_stop+0x110/0x110

This commit simply corrects the "integer_size" parameter used to lookup
the vdev's ZAP object.

Reviewed-by: Giuseppe Di Natale <guss80@gmail.com>
Reviewed-by: Igor Kozhukhov <igor@dilos.org>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #8790
2019-05-24 12:17:52 -07:00
.github Update CONTRIBUTING to point users to IRC as well as mailing list 2019-03-13 11:57:57 -07:00
cmd zpool: trim -p is not a valid option 2019-05-24 09:40:46 -07:00
config kernel timer API rework 2019-05-23 14:40:28 -07:00
contrib Move dracut specifics to dracut module 2019-04-02 17:14:39 -07:00
etc Fix zfs-mount-generator for datasets with spaces 2019-05-07 09:32:23 -07:00
include kernel timer API rework 2019-05-23 14:40:28 -07:00
lib Fix wrong assertion in libzfs diff error handling 2019-05-19 17:31:54 -07:00
man Correct man page dates 2019-05-08 10:59:32 -07:00
module Device removal panics on 32-bit systems 2019-05-24 12:17:52 -07:00
rpm Add diffutils dependency for dkms build 2019-02-20 10:04:05 -08:00
scripts Add zol2zfs-patch.sed to Makefile.am and sort 2019-05-08 11:00:11 -07:00
tests Rename reservation tests from *.sh to *.ksh 2019-05-23 15:42:03 -07:00
udev Add enclosure_symlinks option to vdev_id 2018-12-14 17:27:49 -08:00
.gitignore git ignore python 3.7 virtual environment directories 2019-03-25 15:05:26 -07:00
.gitmodules Add zimport.sh compatibility test script 2014-02-21 12:10:31 -08:00
.travis.yml Add .travis.yml 2017-11-13 09:18:18 -08:00
AUTHORS Update build system and packaging 2018-05-29 16:00:33 -07:00
autogen.sh Cause autogen.sh to fail if autoreconf fails 2018-07-06 09:27:37 -07:00
CODE_OF_CONDUCT.md Add CODE_OF_CONDUCT.md 2019-04-30 10:58:45 -07:00
configure.ac Add TRIM support 2019-03-29 09:13:20 -07:00
copy-builtin Allow copy-builtin to work with modified sources 2018-10-17 12:06:05 -07:00
COPYRIGHT Update build system and packaging 2018-05-29 16:00:33 -07:00
LICENSE Update build system and packaging 2018-05-29 16:00:33 -07:00
Makefile.am Add CODE_OF_CONDUCT.md 2019-04-30 10:58:45 -07:00
META Tag 0.8.0 2019-05-21 11:11:41 -07:00
NEWS Add NEWS file 2018-09-18 12:03:47 -07:00
NOTICE Update build system and packaging 2018-05-29 16:00:33 -07:00
README.md Explicitly state supported Linux versions 2018-05-30 20:11:19 -07:00
TEST Update build system and packaging 2018-05-29 16:00:33 -07:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

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ZFS on Linux is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community.

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Official Resources

Installation

Full documentation for installing ZoL on your favorite Linux distribution can be found at our site.

Contribute & Develop

We have a separate document with contribution guidelines.

Release

ZFS on Linux is released under a CDDL license.
For more details see the NOTICE, LICENSE and COPYRIGHT files; UCRL-CODE-235197

Supported Kernels

  • The META file contains the officially recognized supported kernel versions.