getname_kernel() needs to make sure that ->name != ->iname in long case
commit 30ce4d1903e1d8a7ccd110860a5eef3c638ed8be upstream. missed it in "kill struct filename.separate" several years ago. Cc: stable@vger.kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -221,9 +221,10 @@ getname_kernel(const char * filename)
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if (len <= EMBEDDED_NAME_MAX) {
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if (len <= EMBEDDED_NAME_MAX) {
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result->name = (char *)result->iname;
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result->name = (char *)result->iname;
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} else if (len <= PATH_MAX) {
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} else if (len <= PATH_MAX) {
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const size_t size = offsetof(struct filename, iname[1]);
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struct filename *tmp;
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struct filename *tmp;
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tmp = kmalloc(sizeof(*tmp), GFP_KERNEL);
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tmp = kmalloc(size, GFP_KERNEL);
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if (unlikely(!tmp)) {
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if (unlikely(!tmp)) {
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__putname(result);
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__putname(result);
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return ERR_PTR(-ENOMEM);
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return ERR_PTR(-ENOMEM);
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