zfs/module
Gunnar Beutner 1f0d8a566f Fixed a NULL pointer dereference bug in zfs_preumount
When zpl_fill_super -> zfs_domount fails (e.g. because the dataset
was destroyed before it could be successfully mounted) the subsequent
call to zpl_kill_sb -> zfs_preumount would derefence a NULL pointer.

This bug can be reproduced using this shell script:

 #!/bin/sh
 (
 while true; do
 	zfs create -o mountpoint=legacz tank/bar
 	zfs destroy tank/bar
 done
 ) &

 (
 while true; do
 	mount -t zfs tank/bar /mnt
 	umount /mnt
 done
 ) &

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #639
2012-04-05 11:29:42 -07:00
..
avl Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
nvpair Implement SA based xattrs 2011-11-28 15:45:51 -08:00
unicode Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
zcommon Support ashift=13 for 8KB SSD block sizes 2012-02-13 12:25:27 -08:00
zfs Fixed a NULL pointer dereference bug in zfs_preumount 2012-04-05 11:29:42 -07:00
zpios Linux 2.6.36 compat, use fops->unlocked_ioctl() 2010-11-10 17:01:08 -08:00
.gitignore Add .gitignore files to exclude build products 2010-01-08 11:35:17 -08:00
Makefile.in Fix 'make install' overly broad 'rm' 2011-07-20 09:38:51 -07:00