WSL2-Linux-Kernel/arch/arm64/mm
Dean Nelson 2cff98b99c arm64: add missing PAGE_ALIGN() to __dma_free()
__dma_alloc() does a PAGE_ALIGN() on the passed in size argument before
doing anything else. __dma_free() does not. And because it doesn't, it is
possible to leak memory should size not be an integer multiple of PAGE_SIZE.

The solution is to add a PAGE_ALIGN() to __dma_free() like is done in
__dma_alloc().

Additionally, this patch removes a redundant PAGE_ALIGN() from
__dma_alloc_coherent(), since __dma_alloc_coherent() can only be called
from __dma_alloc(), which already does a PAGE_ALIGN() before the call.

Cc: stable@vger.kernel.org
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Dean Nelson <dnelson@redhat.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-04-29 17:39:39 +01:00
..
Makefile arm64: add support to dump the kernel page tables 2014-11-26 17:19:18 +00:00
cache.S arm64: compat: align cacheflush syscall with arch/arm 2014-12-01 13:31:12 +00:00
context.c arm64: Process management 2012-09-17 13:41:58 +01:00
copypage.c arm64: export __cpu_{clear,copy}_user_page functions 2014-07-08 17:30:51 +01:00
dma-mapping.c arm64: add missing PAGE_ALIGN() to __dma_free() 2015-04-29 17:39:39 +01:00
dump.c arm64 updates for 3.20: 2015-02-11 18:03:54 -08:00
extable.c arm64: MMU fault handling and page table management 2012-09-17 13:41:57 +01:00
fault.c arm64: move to ESR_ELx macros 2015-01-15 12:24:15 +00:00
flush.c arm64: mm: enable RCU fast_gup 2014-10-09 22:26:01 -04:00
hugetlbpage.c mm/hugetlb: reduce arch dependent code around follow_huge_* 2015-02-11 17:06:01 -08:00
init.c arm64: add support for memtest 2015-04-14 16:49:06 -07:00
ioremap.c arm64: add ioremap physical address information 2015-01-23 15:29:06 +00:00
mm.h arm64: add better page protections to arm64 2015-01-22 14:54:29 +00:00
mmap.c mm: expose arch_mmap_rnd when available 2015-04-14 16:49:05 -07:00
mmu.c arm64 updates for 4.1: 2015-04-16 13:58:29 -05:00
pageattr.c arm64: mm: unexport set_memory_ro and set_memory_rw 2015-03-19 10:43:56 +00:00
pgd.c arm64: pgalloc: consistently use PGALLOC_GFP 2014-11-20 12:05:18 +00:00
proc-macros.S arm64: mm: increase VA range of identity map 2015-03-23 11:35:29 +00:00
proc.S arm64: mm: increase VA range of identity map 2015-03-23 11:35:29 +00:00