Hello, hfi1_ioctl() contains many calls to might sleep functions with dd->hfi1_snoop.snoop_lock spinlock held (for example, access_ok, copy_from_user, kzalloc(GFP_KERNEL), etc.). Should dd->hfi1_snoop.snoop_lock be acquired just before updating state? Found by Linux Driver Verification project (linuxtesting.org). -- Alexey Khoroshilov Linux Verification Center, ISPRAS web: http://linuxtesting.org -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html