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OpenZFS on Linux and FreeBSD
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Chunwei Chen af4e50750b Fix out-of-bound access in zfs_fillpage 
The original code will do an out-of-bound access on pl[] during last
iteration.

 ==================================================================
 BUG: KASAN: stack-out-of-bounds in zfs_getpage+0x14c/0x2d0 [zfs]
 Read of size 8 by task tmpfile/7850
 page:ffffea00017c6dc0 count:0 mapcount:0 mapping:          (null) index:0x0
 flags: 0xffff8000000000()
 page dumped because: kasan: bad access detected
 CPU: 3 PID: 7850 Comm: tmpfile Tainted: G           OE   4.6.0+ #3
  ffff88005f1b7678 0000000006dbe035 ffff88005f1b7508 ffffffff81635618
  ffff88005f1b7678 ffff88005f1b75a0 ffff88005f1b7590 ffffffff81313ee8
  ffffea0001ae8dd0 ffff88005f1b7670 0000000000000246 0000000041b58ab3
 Call Trace:
  [<ffffffff81635618>] dump_stack+0x63/0x8b
  [<ffffffff81313ee8>] kasan_report_error+0x528/0x560
  [<ffffffff81278f20>] ? filemap_map_pages+0x5f0/0x5f0
  [<ffffffff813144b8>] kasan_report+0x58/0x60
  [<ffffffffc12250dc>] ? zfs_getpage+0x14c/0x2d0 [zfs]
  [<ffffffff81312e4e>] __asan_load8+0x5e/0x70
  [<ffffffffc12250dc>] zfs_getpage+0x14c/0x2d0 [zfs]
  [<ffffffffc1252131>] zpl_readpage+0xd1/0x180 [zfs]

  [<ffffffff81353c3a>] SyS_execve+0x3a/0x50
  [<ffffffff810058ef>] do_syscall_64+0xef/0x180
  [<ffffffff81d0ee25>] entry_SYSCALL64_slow_path+0x25/0x25
 Memory state around the buggy address:
  ffff88005f1b7500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  ffff88005f1b7580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 >ffff88005f1b7600: 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 f4
                                                                 ^
  ffff88005f1b7680: f4 f4 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00
  ffff88005f1b7700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ==================================================================

Signed-off-by: Chunwei Chen <david.chen@osnexus.com>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #4705
Issue #4708
 		2016-09-09 13:21:09 -07:00
cmd Use udev for partition detection 2016-05-06 18:22:34 -04:00
config Linux 4.7 compat: fix zpl_get_acl returns invalid acl pointer 2016-09-05 16:07:08 -07:00
contrib Init script fixes 2015-09-29 15:27:14 -07:00
etc Systemd configuration fixes 2016-09-05 16:07:09 -07:00
include Kill zp->z_xattr_parent to prevent pinning 2016-09-09 13:21:09 -07:00
lib Illumos 4953, 4954, 4955 2016-09-05 16:07:08 -07:00
man Add tunable to ignore hole_birth (enabled by default) 2016-09-09 13:20:54 -07:00
module Fix out-of-bound access in zfs_fillpage 2016-09-09 13:21:09 -07:00
rpm Prepare to tag zfs-0.6.5.7 2016-05-12 19:35:49 -07:00
scripts Add support for asynchronous zvol minor operations 2016-03-22 18:08:04 -07:00
udev Support parallel build trees (VPATH builds) 2015-07-17 13:42:51 -07:00
.gitignore Ignore *.{deb,rpm,tar.gz} files in the top directory. 2013-04-24 16:18:59 -07:00
.gitmodules Add zimport.sh compatibility test script 2014-02-21 12:10:31 -08:00
AUTHORS Add a missing > to AUTHORS 2014-09-02 14:18:53 -07:00
COPYRIGHT Update ZED copyright boilerplate 2015-05-11 15:07:00 -07:00
DISCLAIMER Fix minor typos and update marketing copy. 2013-03-21 12:51:06 -07:00
META Prepare to tag zfs-0.6.5.7 2016-05-12 19:35:49 -07:00
Makefile.am Add `make lint` target 2016-09-05 16:07:08 -07:00
OPENSOLARIS.LICENSE Add CDDL license file 2008-12-01 14:49:34 -08:00
README.markdown Fix minor typos and update marketing copy. 2013-03-21 12:51:06 -07:00
TEST Follow 0/-E convention for module load errors 2015-12-23 17:29:35 -08:00
autogen.sh build: do not call boilerplate ourself 2013-04-02 10:55:20 -07:00
configure.ac Move dracut directory to contrib 2015-07-09 13:59:37 -07:00
copy-builtin Fix --enable-linux-builtin 2015-12-23 17:29:34 -08:00
zfs-script-config.sh.in Initial implementation of zed (ZFS Event Daemon) 2014-04-02 13:10:03 -07:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

README.markdown

Native ZFS for Linux!

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

ZFS on Linux, which is also known as ZoL, is currently feature complete. It includes fully functional and stable SPA, DMU, ZVOL, and ZPL layers.

Full documentation for installing ZoL on your favorite Linux distribution can be found at: http://zfsonlinux.org