The following commit has been merged into the irq/core branch of tip: Commit-ID: bc88d44bd7e45b992cf8c2c2ffbc7bb3e24db4a7 Gitweb: https://git.kernel.org/tip/bc88d44bd7e45b992cf8c2c2ffbc7bb3e24db4a7 Author: Steven Price <steven.price@xxxxxxx> AuthorDate: Mon, 21 Oct 2024 11:41:05 +01:00 Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx> CommitterDate: Mon, 21 Oct 2024 15:49:15 +02:00 irqchip/gic-v3-its: Fix over allocation in itt_alloc_pool() 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@xxxxxxxxxx> Signed-off-by: Steven Price <steven.price@xxxxxxx> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Link: https://lore.kernel.org/all/1f6e19c4-1fb9-43ab-a8a2-a465c9cff84b@xxxxxxx Closes: https://lore.kernel.org/r/ed65312a-245c-4fa5-91ad-5d620cab7c6b%40nvidia.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 be77f92..395961f 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -261,7 +261,7 @@ 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;