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OpenZFS on Linux and FreeBSD
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Alexander Motin 5ff2249fa5 Fix use-after-free in case of L2ARC prefetch failure 
In case L2ARC read failed, l2arc_read_done() creates _different_ ZIO
to read data from the original storage device.  Unfortunately pointer
to the failed ZIO remains in hdr->b_l1hdr.b_acb->acb_zio_head, and if
some other read try to bump the ZIO priority, it will crash.

The problem is reproducible by corrupting L2ARC content and reading
some data with prefetch if l2arc_noprefetch tunable is changed to 0.
With the default setting the issue is probably not reproducible now.

Reviewed-by: Tom Caputi <tcaputi@datto.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alexander Motin <mav@FreeBSD.org>
Sponsored-By: iXsystems, Inc.
Closes #9648
 		2019-12-03 09:59:30 -08:00
.github Fix typos 2019-09-02 18:17:39 -07:00
cmd Add FreeBSD code to arc_summary and arcstat 2019-11-30 15:43:23 -08:00
config Remove zfs_vdev_elevator module option 2019-11-27 10:35:49 -08:00
contrib Skip loading already loaded key 2019-11-08 14:34:07 -08:00
etc Fix encryption logic in systemd mount generator 2019-11-27 10:54:49 -08:00
include Move linux qsort def to platform header 2019-12-03 09:49:40 -08:00
lib Increase allowed 'special_small_blocks' maximum value 2019-12-03 09:58:03 -08:00
man Increase allowed 'special_small_blocks' maximum value 2019-12-03 09:58:03 -08:00
module Fix use-after-free in case of L2ARC prefetch failure 2019-12-03 09:59:30 -08:00
rpm Canonicalize Python shebangs 2019-09-12 13:32:32 -07:00
scripts Move platform independent tests to a shared runfile 2019-10-09 10:39:26 -07:00
tests Increase allowed 'special_small_blocks' maximum value 2019-12-03 09:58:03 -08:00
udev Restore :: in Makefile.am 2019-08-26 11:48:31 -07:00
.gitignore Adapt gitignore for modules 2019-12-02 13:23:47 -08:00
.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
CODE_OF_CONDUCT.md Add CODE_OF_CONDUCT.md 2019-04-30 10:58:45 -07:00
COPYRIGHT OpenZFS restructuring - move platform specific sources 2019-09-06 11:26:26 -07:00
LICENSE Update build system and packaging 2018-05-29 16:00:33 -07:00
META Linux compat: Minimum kernel version 3.10 2019-11-12 08:59:06 -08:00
Makefile.am Perform KABI checks in parallel 2019-10-01 12:50:34 -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
autogen.sh Cause autogen.sh to fail if autoreconf fails 2018-07-06 09:27:37 -07:00
configure.ac Prevent unnecessary resilver restarts 2019-11-27 10:15:01 -08:00
copy-builtin copy-builtin: SPL must be in Kbuild first (again) 2019-09-11 11:09:50 -07:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

README.md

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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.