get_free_pipe_id_locked() is called with spinlock held, so the patch replaces GFP_KERNEL with GFP_ATOMIC to avoid sleeping in atomic spinlock context.
Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <[email protected]> --- drivers/platform/goldfish/goldfish_pipe.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/platform/goldfish/goldfish_pipe.c b/drivers/platform/goldfish/goldfish_pipe.c index 2de1e603bd2b..5f3672153b12 100644 --- a/drivers/platform/goldfish/goldfish_pipe.c +++ b/drivers/platform/goldfish/goldfish_pipe.c @@ -704,7 +704,7 @@ static int get_free_pipe_id_locked(struct goldfish_pipe_dev *dev) /* Reallocate the array */ u32 new_capacity = 2 * dev->pipes_capacity; struct goldfish_pipe **pipes = - kcalloc(new_capacity, sizeof(*pipes), GFP_KERNEL); + kcalloc(new_capacity, sizeof(*pipes), GFP_ATOMIC); if (!pipes) return -ENOMEM; memcpy(pipes, dev->pipes, sizeof(*pipes) * dev->pipes_capacity); -- 2.7.4
