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9af0c7a6fa
linux-next/arch/x86/mm
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Ludwig Nussel 9af0c7a6fa x86: Fix mmap random address range 
On x86_32 casting the unsigned int result of get_random_int() to
long may result in a negative value.  On x86_32 the range of
mmap_rnd() therefore was -255 to 255.  The 32bit mode on x86_64
used 0 to 255 as intended.

The bug was introduced by 675a081 ("x86: unify mmap_{32|64}.c")
in January 2008.

Signed-off-by: Ludwig Nussel <ludwig.nussel@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: harvey.harrison@gmail.com
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/201111152246.pAFMklOB028527@wpaz5.hot.corp.google.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-12-05 17:07:23 +01:00
..
kmemcheck x86: Swap save_stack_trace_regs parameters 2011-06-14 22:48:51 -04:00
amdtopology.c x86, NUMA: Enable CONFIG_AMD_NUMA on 32bit too 2011-05-02 17:24:48 +02:00
dump_pagetables.c x86, mm: Create symbolic index into address_markers array 2010-07-20 16:56:19 -07:00
extable.c x86, 64-bit: Move K8 B step iret fixup to fault entry asm 2009-10-12 18:29:46 +02:00
fault.c Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2011-10-28 05:46:02 -07:00
gup.c thp: share get_huge_page_tail() 2011-11-02 16:06:58 -07:00
highmem_32.c mm: fix race in kunmap_atomic() 2010-10-27 18:03:05 -07:00
hugetlbpage.c mm: Convert i_mmap_lock to a mutex 2011-05-25 08:39:18 -07:00
init_32.c x86, mm: Unify zone_sizes_init() 2011-11-11 10:22:55 +01:00
init_64.c x86, mm: Unify zone_sizes_init() 2011-11-11 10:22:55 +01:00
init.c x86, mm: Unify zone_sizes_init() 2011-11-11 10:22:55 +01:00
iomap_32.c mm: fix race in kunmap_atomic() 2010-10-27 18:03:05 -07:00
ioremap.c ioremap: Delay sanity check until after a successful mapping 2011-04-29 08:02:47 +02:00
kmmio.c x86, kmmio/mmiotrace: Fix double free of kmmio_fault_pages 2010-06-18 11:30:09 +02:00
Makefile x86, NUMA: Rename amdtopology_64.c to amdtopology.c 2011-05-02 17:24:48 +02:00
memblock.c x86, efi: Do not reserve boot services regions within reserved areas 2011-06-18 22:48:49 +02:00
memtest.c x86, memblock: Replace e820_/_early string with memblock_ 2010-08-27 11:13:47 -07:00
mmap.c x86: Fix mmap random address range 2011-12-05 17:07:23 +01:00
mmio-mod.c Merge branch 'master' into for-next 2011-09-15 15:08:18 +02:00
numa_32.c x86, mm: s/PAGES_PER_ELEMENT/PAGES_PER_SECTION/ 2011-07-12 21:58:11 -07:00
numa_64.c x86, NUMA: Move NUMA init logic from numa_64.c to numa.c 2011-05-02 14:18:53 +02:00
numa_emulation.c x86, NUMA: Enable emulation on 32bit too 2011-05-02 17:24:48 +02:00
numa_internal.h x86, NUMA: Initialize and use remap allocator from setup_node_bootmem() 2011-05-02 14:18:54 +02:00
numa.c x86, numa: Implement pfn -> nid mapping granularity check 2011-07-12 21:58:29 -07:00
pageattr-test.c x86: Convert vmalloc()+memset() to vzalloc() 2011-05-28 19:53:57 +02:00
pageattr.c x86: Fix common misspellings 2011-03-18 10:39:30 +01:00
pat_internal.h x86, pat: Fix memory leak in free_memtype 2010-05-26 11:26:04 -07:00
pat_rbtree.c rbtree: Undo augmented trees performance damage and regression 2010-07-05 14:43:50 +02:00
pat.c Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-08-06 10:17:52 -07:00
pf_in.c x86: Eliminate various 'set but not used' warnings 2011-05-21 19:10:33 +02:00
pf_in.h x86 mmiotrace: move files into arch/x86/mm/. 2008-05-24 11:25:37 +02:00
pgtable_32.c x86: remove last traces of quicklist usage 2010-05-24 13:33:31 -07:00
pgtable.c x86: Flush TLB if PGD entry is changed in i386 PAE mode 2011-03-18 11:44:01 +01:00
physaddr.c x86: split __phys_addr out into separate file 2009-09-10 11:48:55 -07:00
physaddr.h x86: split __phys_addr out into separate file 2009-09-10 11:48:55 -07:00
setup_nx.c x86, cpu: Only CPU features determine NX capabilities 2010-11-10 15:43:15 -08:00
srat.c x86, NUMA: make srat.c 32bit safe 2011-05-02 14:18:52 +02:00
testmmiotrace.c x86, kmmio/mmiotrace: Fix double free of kmmio_fault_pages 2010-06-18 11:30:09 +02:00
tlb.c x86, tlb, UV: Do small micro-optimization for native_flush_tlb_others() 2011-03-15 08:30:34 +01:00