From: Steven Price <steven.price@arm.com> mainline inclusion from mainline-v6.13-rc1 commit bc88d44bd7e45b992cf8c2c2ffbc7bb3e24db4a7 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IBWQ24 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i... -------------------------------- itt_alloc_pool() calls its_alloc_pages_node() to allocate an individual page to add to the pool (for allocations <PAGE_SIZE). However the final argument of its_alloc_pages_node() is the page order not the number of pages. Currently it allocates two pages and leaks the second page. Fix it by passing 0 instead (1 << 0 = 1 page). Fixes: b08e2f42e86b ("irqchip/gic-v3-its: Share ITS tables with a non-trusted hypervisor") Reported-by: Shanker Donthineni <sdonthineni@nvidia.com> Signed-off-by: Steven Price <steven.price@arm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/1f6e19c4-1fb9-43ab-a8a2-a465c9cff84b@arm.com Closes: https://lore.kernel.org/r/ed65312a-245c-4fa5-91ad-5d620cab7c6b%40nvidia.com Signed-off-by: Cai Xinchen <caixinchen1@huawei.com> --- drivers/irqchip/irq-gic-v3-its.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index a878234b3cd8..af41f460523e 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -445,7 +445,7 @@ static void *itt_alloc_pool(int node, int size) if (addr) break; - page = its_alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 1); + page = its_alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0); if (!page) break; -- 2.18.0.huawei.25