Vasily Gorbik 6ce9a22fc0 s390/mem_detect: fix detect_memory() error handling ...

[ Upstream commit 3400c35a4090704e6c465449616ab7e67a9209e7 ]

Currently if for some reason sclp_early_read_info() fails,
sclp_early_get_memsize() will not set max_physmem_end and it
will stay uninitialized. Any garbage value other than 0 will lead
to detect_memory() taking wrong path or returning a garbage value
as max_physmem_end. To avoid that simply initialize max_physmem_end.

Fixes: 73045a08cf55 ("s390: unify identity mapping limits handling")
Reported-by: Alexander Gordeev <agordeev@linux.ibm.com>
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2023-03-10 09:39:14 +01:00

..

compressed

s390/decompressor: specify __decompress() buf len to avoid overflow

2023-02-22 12:57:02 +01:00

.gitignore

.gitignore: add SPDX License Identifier

2020-03-25 11:50:48 +01:00

als.c

s390/facilities: move stfl information from lowcore to global data

2021-06-07 17:06:58 +02:00

boot.h

s390/boot: move dma sections from decompressor to decompressed kernel

2021-07-27 09:39:17 +02:00

cmdline.c

s390: move ipl block and cmd line handling to early boot phase

2018-10-09 11:21:14 +02:00

ctype.c

s390: move ipl block and cmd line handling to early boot phase

2018-10-09 11:21:14 +02:00

ebcdic.c

s390/decompressor: avoid reusing uncompressed image objects

2018-06-25 10:14:39 +02:00

head_kdump.S

s390/decompressor: correct some asm symbols annotations

2020-11-20 19:19:11 +01:00

head.S

s390/boot: move dma sections from decompressor to decompressed kernel

2021-07-27 09:39:17 +02:00

install.sh

s390/arch: install kernels with their proper version ID

2020-02-19 17:27:24 +01:00

ipl_parm.c

s390/ipl_parm: use register pair instead of register asm

2021-06-18 16:41:23 +02:00

ipl_report.c

s390/boot: introduce boot data 'initrd_data'

2021-07-27 09:39:15 +02:00

ipl_vmparm.c

s390: move ipl block and cmd line handling to early boot phase

2018-10-09 11:21:14 +02:00

kaslr.c

s390/boot: introduce boot data 'initrd_data'

2021-07-27 09:39:15 +02:00

machine_kexec_reloc.c

s390/kernel: build a relocatable kernel

2019-04-29 10:47:10 +02:00

Makefile

s390: move the install rule to arch/s390/Makefile

2021-07-30 17:09:36 +02:00

mem_detect.c

s390/mem_detect: fix detect_memory() error handling

2023-03-10 09:39:14 +01:00

mem.S

s390/decompressor: reuse lib/mem.S for mem functions

2018-06-25 10:14:39 +02:00

pgm_check_info.c

Kbuild updates for v5.15

2021-09-03 15:33:47 -07:00

sclp_early_core.c

s390/boot: move sclp early buffer from fixed address in asm to C

2021-07-27 09:39:15 +02:00

startup.c

s390/boot: allocate amode31 section in decompressor

2022-07-12 16:34:56 +02:00

string.c

kasan, x86, s390: update undef CONFIG_KASAN

2020-12-22 12:55:08 -08:00

uv.c

s390/dump: introduce boot data 'oldmem_data'

2021-07-27 09:39:16 +02:00

uv.h

s390/boot: disable Secure Execution in dump mode

2021-07-27 09:39:14 +02:00

version.c

s390: enable detection of kernel version from bzImage

2019-07-23 10:43:50 +02:00