virtiovf_read_device_context_chunk() takes migf->list_lock with spin_lock() but releases it with spin_unlock_irq(). This mismatch can incorrectly enable interrupts if they were already disabled when the lock was acquired, leading to unbalanced IRQ state. Fix by using spin_lock_irq() to match spin_unlock_irq(). Fixes: 0bbc82e4ec79 ("vfio/virtio: Add support for the basic live migration functionality") Signed-off-by: Jinhui Guo --- drivers/vfio/pci/virtio/migrate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/vfio/pci/virtio/migrate.c b/drivers/vfio/pci/virtio/migrate.c index 35fa2d6ed611..9fc24788fc04 100644 --- a/drivers/vfio/pci/virtio/migrate.c +++ b/drivers/vfio/pci/virtio/migrate.c @@ -621,7 +621,7 @@ virtiovf_read_device_context_chunk(struct virtiovf_migration_file *migf, buf->start_pos = buf->migf->max_pos; migf->max_pos += buf->length; - spin_lock(&migf->list_lock); + spin_lock_irq(&migf->list_lock); list_add_tail(&buf->buf_elm, &migf->buf_list); spin_unlock_irq(&migf->list_lock); return 0; -- 2.20.1