During the release cycle of v3.17 I've seen sometimes a broken serial console 
output
on the parisc platform. Interestingly all kernel messages printed by the kernel 
via printk() show
up correctly, but output from userspace (e.g. by the init process during boot) 
show
up as random bytes.
Since the printk() output is correct the serial port itself and setup is 
probably correct.
Is parisc the only arch which has this problem, or are other architectures 
affected as well?
Maybe someone has an idea what could be wrong?
I did not try to bisect it yet.

Thanks,
Helge

Here is a sample output during bootup:

<lots of standard kernel printk output>...
usb 1-2: Manufacturer: SILITEK
rs
     og
 ]f"
s l
random: nonblocking pool is initialized
net eth0: Setting full-duplex based on MII#1 link partner capability of 45e1
tpdsystemd-udevd[744]: starting version 215
.
 eg..
     vp..
         ..Adding 1350652k swap on /dev/sdb6.  Priority:-1 extents:1 
across:1350652k
.
 EXT4-fs (sdb5): re-mounted. Opts: (null)
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