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H A D | dir.c | 9561a896 Mon Feb 10 16:57:09 CST 2014 Tejun Heo <tj@kernel.org> kernfs: fix hash calculation in kernfs_rename_ns()
3eef34ad7dc3 ("kernfs: implement kernfs_get_parent(), kernfs_name/path() and friends") restructured kernfs_rename_ns() such that new name assignment happens under kernfs_rename_lock; unfortunately, it mistakenly passed NULL to kernfs_name_hash() to calculate the new hash if the name hasn't changed, which can lead to oops.
Fix it by using kn->name and kn->ns when calculating the new hash.
Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 9561a896 Mon Feb 10 16:57:09 CST 2014 Tejun Heo <tj@kernel.org> kernfs: fix hash calculation in kernfs_rename_ns() 3eef34ad7dc3 ("kernfs: implement kernfs_get_parent(), kernfs_name/path() and friends") restructured kernfs_rename_ns() such that new name assignment happens under kernfs_rename_lock; unfortunately, it mistakenly passed NULL to kernfs_name_hash() to calculate the new hash if the name hasn't changed, which can lead to oops. Fix it by using kn->name and kn->ns when calculating the new hash. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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