3.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Matt Wilson <msw@xxxxxxxxxx> commit 14883a75ec76b44759385fb12629f4a0f1aef4e3 upstream. Commit f62805f1 introduced a bug where lazy MMU mode isn't exited if a m2p_add/remove_override call fails. Acked-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> Cc: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx> Reviewed-by: David Vrabel <david.vrabel@xxxxxxxxxx> Reviewed-by: Anthony Liguori <aliguori@xxxxxxxxxx> Signed-off-by: Matt Wilson <msw@xxxxxxxxxx> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/xen/grant-table.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/drivers/xen/grant-table.c +++ b/drivers/xen/grant-table.c @@ -921,9 +921,10 @@ int gnttab_map_refs(struct gnttab_map_gr ret = m2p_add_override(mfn, pages[i], kmap_ops ? &kmap_ops[i] : NULL); if (ret) - return ret; + goto out; } + out: if (lazy) arch_leave_lazy_mmu_mode(); @@ -954,9 +955,10 @@ int gnttab_unmap_refs(struct gnttab_unma ret = m2p_remove_override(pages[i], kmap_ops ? &kmap_ops[i] : NULL); if (ret) - return ret; + goto out; } + out: if (lazy) arch_leave_lazy_mmu_mode(); -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html