On Mon, Jul 20, 2020 at 04:07PM +0206, John Ogness wrote: > With commit ("printk: use the lockless ringbuffer"), printk() > started silently dropping messages without text because such > records are not supported by the new printk ringbuffer. > > Add support for such records. > > Currently dataless records are denoted by INVALID_LPOS in order > to recognize failed prb_reserve() calls. Change the ringbuffer > to instead use two different identifiers (FAILED_LPOS and > NO_LPOS) to distinguish between failed prb_reserve() records and > successful dataless records, respectively. > > Fixes: ("printk: use the lockless ringbuffer") > Fixes: https://lkml.kernel.org/r/20200718121053.GA691245@xxxxxxxxxxxxxxxx > Signed-off-by: John Ogness <john.ogness@xxxxxxxxxxxxx> > --- > based on next-20200720 > > kernel/printk/printk_ringbuffer.c | 58 ++++++++++++++----------------- > kernel/printk/printk_ringbuffer.h | 15 ++++---- > 2 files changed, 35 insertions(+), 38 deletions(-) Thanks! Ran a couple tests and sanitizer report blank lines are back where they're expected. Tested-by: Marco Elver <elver@xxxxxxxxxx> _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec