commit
7f414195b0c3612acd12b4611a5fe75995cf10c7 upstream.
Andy prefers to be paranoid about the pagetable free in the error path of
write_ldt(). Make it conditional and warn whenever the installment of a
secondary LDT fails.
Requested-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* already installed then the PTE page is already
* populated. Mop up a half populated page table.
*/
- free_ldt_pgtables(mm);
+ if (!WARN_ON_ONCE(old_ldt))
+ free_ldt_pgtables(mm);
free_ldt_struct(new_ldt);
goto out_unlock;
}