Subject: next-20230803: boot hang with serial console enabled

From: "Aithal, Srikanth" <[email-masked]>
Date: Thu, 3 Aug 2023 16:43:30 +0530

Hello all,

linux-next build 20230802 onwards seeing host hang issue when booting 
with serial console enabled.

===============
Recreation steps
===============
1. Enable serial console by appending following parameters in grub:

GRUB_CMDLINE_LINUX append with "console=ttyS0,115200n8 earlyprintk"
GRUB_TERMINAL_OUTPUT="console serial"
Update grub.

2. Then try to boot into next-20230802/next-20230803

Below is the error seeing when the host kernel boots and then host hangs.

Memory KASLR using RDRAND RDTSC...
Poking KASLR using RDRAND RDTSC...
[    0.004421] __common_interrupt: 96.55 No irq handler for vector
[    2.552117] pstore: zlib_inflate() failed, ret = -5!
[    2.564770] pstore: zlib_inflate() failed, ret = -5!
[    2.577606] pstore: zlib_inflate() failed, ret = -5!
[    2.590765] pstore: zlib_inflate() failed, ret = -5!
[    2.606677] pstore: zlib_inflate() failed, ret = -5!
[    2.635828] pstore: zlib_inflate() failed, ret = -5!
[    2.650669] pstore: zlib_inflate() failed, ret = -5!
[    2.666176] pstore: zlib_inflate() failed, ret = -5!
[    2.682027] pstore: zlib_inflate() failed, ret = -5!
[    2.714415] pstore: zlib_inflate() failed, ret = -5!
[    2.737626] pstore: zlib_inflate() failed, ret = -5!
[    2.768368] pstore: zlib_inflate() failed, ret = -5!
[    2.802555] pstore: zlib_inflate() failed, ret = -5!
[    2.828769] pstore: zlib_inflate() failed, ret = -5!
[    2.849776] pstore: zlib_inflate() failed, ret = -5!
[    2.870973] pstore: zlib_inflate() failed, ret = -5!
[    2.893790] pstore: zlib_inflate() failed, ret = -5!
[    2.913867] pstore: zlib_inflate() failed, ret = -5!