On Tue, Apr 14, 2020 at 09:06:13PM +0900, Sergey Senozhatsky wrote: > Hello, > > Commit ab6f762f0f53162d41 Linus' HEAD. > > printk_deferred() does not make sure that it's safe to write to > per-CPU data, which causes problems when printk_deferred() is > invoked "too early", before per-CPU areas are initialized. There > are multiple bug reports, e.g. > https://bugzilla.kernel.org/show_bug.cgi?id=206847 > > -ss So where do you want this commit backported to? thanks, greg k-h