On Fri, Aug 31, 2018 at 08:23:50AM +0200, Krzysztof Kozlowski wrote: > On Thu, 30 Aug 2018 at 22:09, Dan Rue <dan.rue@xxxxxxxxxx> wrote: > > > > The following commit in 4.18.y causes the build to fail: > > 79764192e1c4 ("printk/nmi: Prevent deadlock when accessing the main log buffer in NMI") > > > > with: > > | kernel/printk/printk_safe.o: In function `vprintk_func': > > | printk_safe.c:(.text+0x51b): undefined reference to `vprintk_store' > > | printk_safe.c:(.text+0x52f): undefined reference to `defer_console_output' > > > > Picking up these from mainline seems to do the trick: > > a338f84dc196 ("printk: Create helper function to queue deferred console handling") > > ba552399954d ("printk: Split the code for storing a message into the log buffer") > > v4.14.68-rc1 (200ff75a6b9d9a6d44dd267c3b84c961983f35ac) fails with same error. Sorry, I'll fix this up, my fault. greg k-h