Cc-ing Petr On (23/04/25 10:09), Liam R. Howlett wrote: > + if (MAS_WARN_ON(&vmi->mas, vmi->mas.node != MAS_START && > + vmi->mas.index > vma->vm_start)) { > + printk("%lx > %lx\n", vmi->mas.index, vma->vm_start); > + printk("store of vma %lx-%lx", vma->vm_start, vma->vm_end); > + printk("into slot %lx-%lx", vmi->mas.index, vmi->mas.last); > } [..] > + if (MAS_WARN_ON(&vmi->mas, vmi->mas.node != MAS_START && > + vmi->mas.last < vma->vm_start)) { > + printk("%lx < %lx\n", vmi->mas.last, vma->vm_start); > + printk("store of vma %lx-%lx", vma->vm_start, vma->vm_end); > + printk("into slot %lx-%lx", vmi->mas.index, vmi->mas.last); > } Any reason for "store of vma" and "into slot" to be two separate printk()-s? It's not guaranteed that these will be printed as a continuous line. A single printk should work fine: pr_foo("store of vma %lx-%lx into slot %lx-%lx", ...); The line probably needs to be terminated with \n unless you expect more pr_cont() printks after this, which doesn't look like a case. Additionally, do you want to pass a specific loglevel? E.g. pr_debug()?