Helge Deller f9cd0c8318 parisc: Fix kernel panic in mem_init() ... [ Upstream commit bf71bc16e0 ] The Debian kernel v5.6 triggers this kernel panic: Kernel panic - not syncing: Bad Address (null pointer deref?) Bad Address (null pointer deref?): Code=26 (Data memory access rights trap) at addr 0000000000000000 CPU: 0 PID: 0 Comm: swapper Not tainted 5.6.0-2-parisc64 #1 Debian 5.6.14-1 IAOQ[0]: mem_init+0xb0/0x150 IAOQ[1]: mem_init+0xb4/0x150 RP(r2): start_kernel+0x6c8/0x1190 Backtrace: [<0000000040101ab4>] start_kernel+0x6c8/0x1190 [<0000000040108574>] start_parisc+0x158/0x1b8 on a HP-PARISC rp3440 machine with this memory layout: Memory Ranges: 0) Start 0x0000000000000000 End 0x000000003fffffff Size 1024 MB 1) Start 0x0000004040000000 End 0x00000040ffdfffff Size 3070 MB Fix the crash by avoiding virt_to_page() and similar functions in mem_init() until the memory zones have been fully set up. Signed-off-by: Helge Deller <deller@gmx.de> Cc: stable@vger.kernel.org # v5.0+ Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-06-03 08:21:28 +02:00
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boot	parisc: Have git ignore generated real2.S and firmware.c	2019-09-12 15:50:07 +02:00
configs	parisc: rename default_defconfig to defconfig	2019-07-31 16:18:18 +02:00
include	parisc: Fix compiler warnings in debug_core.c	2020-01-12 12:21:44 +01:00
kernel	parisc: Use proper printk format for resource_size_t	2020-02-05 21:22:46 +00:00
lib	parisc: Add assembly implementations for memset, strlen, strcpy, strncpy and strcat	2019-08-03 08:56:57 +02:00
math-emu	Makefile: Convert -Wimplicit-fallthrough=3 to just -Wimplicit-fallthrough for clang	2019-08-10 12:45:37 -07:00
mm	parisc: Fix kernel panic in mem_init()	2020-06-03 08:21:28 +02:00
oprofile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
Kconfig	parisc: Implement copy_thread_tls	2020-01-14 20:08:34 +01:00
Kconfig.debug	Kconfig: consolidate the "Kernel hacking" menu	2018-08-02 08:06:48 +09:00
Makefile	kbuild: rebuild modules when module linker scripts are updated	2019-08-21 21:05:21 +09:00
defpalo.conf	parisc: switch to gzip-compressed vmlinuz kernel	2013-07-09 22:09:20 +02:00
install.sh	parisc: make "make install" not depend on vmlinux	2013-11-07 22:28:06 +01:00
nm	…