shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-03-28 13:30:29 +09:00
Code Issues Packages Projects Releases Wiki Activity

Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm

Browse Source 
Pull ARM fixes from Russell King:
 "Last set of ARM fixes for 5.19:

   - fix for MAX_DMA_ADDRESS overflow

   - fix for find_*_bit performing an out of bounds memory access"

* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: findbit: fix overflowing offset
  ARM: 9216/1: Fix MAX_DMA_ADDRESS overflow
This commit is contained in:
Linus Torvalds
2022-07-30 17:24:16 -07:00
parent 620725263f ec85bd369f
commit 6a01025844
2 changed files with 9 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/include/asm/dma.h
View File

@@ -10,7 +10,7 @@
#else
#define MAX_DMA_ADDRESS ({ \
extern phys_addr_t arm_dma_zone_size; \
arm_dma_zone_size && arm_dma_zone_size < (0x10000000 - PAGE_OFFSET) ? \
arm_dma_zone_size && arm_dma_zone_size < (0x100000000ULL - PAGE_OFFSET) ? \
(PAGE_OFFSET + arm_dma_zone_size) : 0xffffffffUL; })
#endif

16
arch/arm/lib/findbit.S
View File

@@ -40,8 +40,8 @@ ENDPROC(_find_first_zero_bit_le)
* Prototype: int find_next_zero_bit(void *addr, unsigned int maxbit, int offset)
*/
ENTRY(_find_next_zero_bit_le)
teq r1, #0
beq 3b
cmp r2, r1
bhs 3b
ands ip, r2, #7
beq 1b @ If new byte, goto old routine
ARM( ldrb r3, [r0, r2, lsr #3] )
@@ -81,8 +81,8 @@ ENDPROC(_find_first_bit_le)
* Prototype: int find_next_zero_bit(void *addr, unsigned int maxbit, int offset)
*/
ENTRY(_find_next_bit_le)
teq r1, #0
beq 3b
cmp r2, r1
bhs 3b
ands ip, r2, #7
beq 1b @ If new byte, goto old routine
ARM( ldrb r3, [r0, r2, lsr #3] )
@@ -115,8 +115,8 @@ ENTRY(_find_first_zero_bit_be)
ENDPROC(_find_first_zero_bit_be)
ENTRY(_find_next_zero_bit_be)
teq r1, #0
beq 3b
cmp r2, r1
bhs 3b
ands ip, r2, #7
beq 1b @ If new byte, goto old routine
eor r3, r2, #0x18 @ big endian byte ordering
@@ -149,8 +149,8 @@ ENTRY(_find_first_bit_be)
ENDPROC(_find_first_bit_be)
ENTRY(_find_next_bit_be)
teq r1, #0
beq 3b
cmp r2, r1
bhs 3b
ands ip, r2, #7
beq 1b @ If new byte, goto old routine
eor r3, r2, #0x18 @ big endian byte ordering