Как увидеть предсмертные printk?

memmap=256K$0xfc0000 ramoops.mem_address=0xfc0000  ramoops.mem_size=0x40000 ramoops.record_size=8192 ramoops.console_size=8192 ramoops.ftrace_size=8192 ramoops.dump_oops=1 pstore.backend=ramoops

   MPS=/sys/fs/pstore
   grep -q pstore /proc/filesystems && ! grep -q pstore /proc/mounts && mount -t pstore none "$MPS"
   modprobe ramoops mem_address=0xfc0000 mem_size=0x40000 record_size=8192 console_size=8192 dump_oops=1
   D="`date +%Y%m%d%H%M%S`"
   for i in $MPS/console-ramoops* ; do
     [ -f "$i" ] && cp "$i" /var/log/ramoops.$D.console-ramoops${i##*console-ramoops}
   done
   for i in $MPS/dmesg-ramoops-* ; do
       [ -n "$i" -a -f "$i" ] || continue
       DF="/var/log/ramoops$D${i##*/}"
       cp "$i" "$DF" && rm "$i"
   done
   echo 3 >/proc/sys/kernel/panic
   echo 1 >/proc/sys/kernel/panic_on_oops
   echo 1 >/proc/sys/kernel/panic_on_io_nmi
   echo 0 >/proc/sys/vm/panic_on_oom
   echo 1 >/proc/sys/kernel/panic_on_unrecovered_nmi