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Vladimir Isaev 9cca6cc73b ARC: mm: PAE: use 40-bit physical page mask 
commit c5f756d8c6265ebb1736a7787231f010a3b782e5 upstream.

32-bit PAGE_MASK can not be used as a mask for physical addresses
when PAE is enabled. PAGE_MASK_PHYS must be used for physical
addresses instead of PAGE_MASK.

Without this, init gets SIGSEGV if pte_modify was called:

| potentially unexpected fatal signal 11.
| Path: /bin/busybox
| CPU: 0 PID: 1 Comm: init Not tainted 5.12.0-rc5-00003-g1e43c377a79f-dirty
| Insn could not be fetched
|     @No matching VMA found
|  ECR: 0x00040000 EFA: 0x00000000 ERET: 0x00000000
| STAT: 0x80080082 [IE U     ]   BTA: 0x00000000
|  SP: 0x5f9ffe44  FP: 0x00000000 BLK: 0xaf3d4
| LPS: 0x000d093e LPE: 0x000d0950 LPC: 0x00000000
| r00: 0x00000002 r01: 0x5f9fff14 r02: 0x5f9fff20
| ...
| Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b

Signed-off-by: Vladimir Isaev <isaev@synopsys.com>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: stable@vger.kernel.org
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2021-05-19 10:08:29 +02:00
..
boot ARC: build: move symlink creation to arch/arc/Makefile to avoid race 2021-01-19 18:26:14 +01:00
configs ARC: [plat-hsdk]: Enable on-boardi SPI ADC IC 2019-10-22 09:58:29 -07:00
include ARC: mm: PAE: use 40-bit physical page mask 2021-05-19 10:08:29 +02:00
kernel ARC: entry: fix off-by-one error in syscall number validation 2021-05-19 10:08:29 +02:00
lib treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mm ARC: mm: PAE: use 40-bit physical page mask 2021-05-19 10:08:29 +02:00
oprofile treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
plat-axs10x treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
plat-eznps irqchip/eznps: Fix build error for !ARC700 builds 2020-09-17 13:47:47 +02:00
plat-hsdk arc: plat-hsdk: fix kconfig dependency warning when !RESET_CONTROLLER 2020-10-29 09:57:47 +01:00
plat-sim treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
plat-tb10x treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333 2019-06-05 17:37:06 +02:00
Kbuild treewide: Add SPDX license identifier - Kbuild 2019-05-30 11:32:33 -07:00
Kconfig dma-mapping updates for Linux 5.3 2019-07-12 15:13:55 -07:00
Kconfig.debug Kconfig: consolidate the "Kernel hacking" menu 2018-08-02 08:06:48 +09:00
Makefile ARC: build: move symlink creation to arch/arc/Makefile to avoid race 2021-01-19 18:26:14 +01:00