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xen/arm: Free p2m entry if fail to add it to RB tree

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Release the newly allocated p2m entry if we detect a duplicate in the RB
tree.

Signed-off-by: Hillf Danton <hdanton@sina.com>
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
This commit is contained in:
Hillf Danton 2019-04-30 11:25:00 -07:00 committed by Stefano Stabellini
parent 72813bfbf0
commit 425f1cc221
1 changed files with 1 additions and 0 deletions
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arch/arm/xen/p2m.c
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@ -156,6 +156,7 @@ bool __set_phys_to_machine_multi(unsigned long pfn,
rc = xen_add_phys_to_mach_entry(p2m_entry);
if (rc < 0) {
write_unlock_irqrestore(&p2m_lock, irqflags);
kfree(p2m_entry);
return false;
}
write_unlock_irqrestore(&p2m_lock, irqflags);