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Illumos #1475: zfs spill block hold can access invalid spill blkptr
[zfs.git]
/
module
/
zfs
/
zfs_vfsops.c
diff --git
a/module/zfs/zfs_vfsops.c
b/module/zfs/zfs_vfsops.c
index
8f1c713
..
998cfde
100644
(file)
--- a/
module/zfs/zfs_vfsops.c
+++ b/
module/zfs/zfs_vfsops.c
@@
-1231,7
+1231,7
@@
zfs_preumount(struct super_block *sb)
{
zfs_sb_t *zsb = sb->s_fs_info;
{
zfs_sb_t *zsb = sb->s_fs_info;
- if (zsb->z_ctldir != NULL)
+ if (zsb
!= NULL && zsb
->z_ctldir != NULL)
zfsctl_destroy(zsb);
}
EXPORT_SYMBOL(zfs_preumount);
zfsctl_destroy(zsb);
}
EXPORT_SYMBOL(zfs_preumount);