Andrey Ryabinin 4ca3b3df6d mm/fadvise.c: fix signed overflow UBSAN complaint ... [ Upstream commit a718e28f538441a3b6612da9ff226973376cdf0f ] Signed integer overflow is undefined according to the C standard. The overflow in ksys_fadvise64_64() is deliberate, but since it is signed overflow, UBSAN complains: UBSAN: Undefined behaviour in mm/fadvise.c:76:10 signed integer overflow: 4 + 9223372036854775805 cannot be represented in type 'long long int' Use unsigned types to do math. Unsigned overflow is defined so UBSAN will not complain about it. This patch doesn't change generated code. [akpm@linux-foundation.org: add comment explaining the casts] Link: http://lkml.kernel.org/r/20180629184453.7614-1-aryabinin@virtuozzo.com Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Reported-by: <icytxw@gmail.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-09-15 09:40:38 +02:00
..
kasan	kasan: fix shadow_size calculation error in kasan_module_alloc	2018-08-24 13:26:58 +02:00
backing-dev.c	writeback: fix the wrong congested state variable definition	2018-04-08 11:51:56 +02:00
balloon_compaction.c
bootmem.c
cleancache.c
cma.c	cma: fix calculation of aligned offset	2018-01-31 12:06:09 +01:00
cma.h
cma_debug.c
compaction.c	mm/compaction: pass only pageblock aligned range to pageblock_pfn_to_page	2018-01-17 09:35:26 +01:00
debug-pagealloc.c	mm, hwpoison: fixup "mm: check the return value of lookup_page_ext for all call sites"	2017-11-24 11:26:29 +01:00
debug.c
dmapool.c
early_ioremap.c	mm/early_ioremap: Fix boot hang with earlyprintk=efi,keep	2018-02-25 11:03:41 +01:00
fadvise.c	mm/fadvise.c: fix signed overflow UBSAN complaint	2018-09-15 09:40:38 +02:00
failslab.c
filemap.c	mm: filemap: avoid unnecessary calls to lock_page when waiting for IO to complete during a read	2018-05-26 08:48:54 +02:00
frame_vector.c
frontswap.c
gup.c	mm: larger stack guard gap, between vmas	2017-06-26 07:13:11 +02:00
highmem.c
huge_memory.c	thp: fix MADV_DONTNEED vs. numa balancing race	2017-12-16 10:33:50 +01:00
hugetlb.c	mm: hugetlb: yield when prepping struct pages	2018-07-11 16:03:48 +02:00
hugetlb_cgroup.c
hwpoison-inject.c
init-mm.c
internal.h	mm, mprotect: flush TLB if potentially racing with a parallel reclaim leaving stale TLB entries	2017-08-11 09:08:50 -07:00
interval_tree.c
Kconfig	mm: don't allow deferred pages with NEED_PER_CPU_KM	2018-05-26 08:48:55 +02:00
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c	mm/kmemleak.c: wait for scan completion before disabling free	2018-05-30 07:49:06 +02:00
ksm.c	mm/ksm: fix interaction with THP	2018-05-30 07:49:08 +02:00
list_lru.c	mm/list_lru.c: fix list_lru_count_node() to be race free	2017-07-21 07:44:56 +02:00
maccess.c
madvise.c	mm/madvise.c: fix madvise() infinite loop under special circumstances	2017-12-05 11:22:50 +01:00
Makefile
memblock.c
memcontrol.c	mm: memcg: fix use after free in mem_cgroup_iter()	2018-07-25 10:18:16 +02:00
memory-failure.c	hwpoison, memcg: forcibly uncharge LRU pages	2018-01-31 12:06:09 +01:00
memory.c	mm/tlb: Remove tlb_remove_table() non-concurrent condition	2018-09-09 20:04:34 +02:00
memory_hotplug.c
mempolicy.c	mm/mempolicy.c: avoid use uninitialized preferred_node	2018-05-30 07:49:05 +02:00
mempool.c	mm/mempool: avoid KASAN marking mempool poison checks as use-after-free	2017-08-12 19:29:09 -07:00
memtest.c
migrate.c	Sanitize 'move_pages()' permission checks	2017-08-24 17:02:36 -07:00
mincore.c
mlock.c
mm_init.c
mmap.c	mmap: relax file size limit for regular files	2018-06-13 16:15:27 +02:00
mmu_context.c	mm/mmu_context, sched/core: Fix mmu_context.h assumption	2017-12-25 14:22:09 +01:00
mmu_notifier.c
mmzone.c
mprotect.c	x86/speculation/l1tf: Disallow non privileged high MMIO PROT_NONE mappings	2018-08-15 17:42:10 +02:00
mremap.c	mm, mprotect: flush TLB if potentially racing with a parallel reclaim leaving stale TLB entries	2017-08-11 09:08:50 -07:00
msync.c
nobootmem.c
nommu.c
oom_kill.c
page-writeback.c	writeback: safer lock nesting	2018-04-24 09:32:12 +02:00
page_alloc.c	mm, page_alloc: do not break __GFP_THISNODE by zonelist reset	2018-07-11 16:03:51 +02:00
page_counter.c
page_ext.c	mm/page_ext.c: check if page_ext is not prepared	2017-11-24 08:32:25 +01:00
page_idle.c
page_io.c
page_isolation.c
page_owner.c	mm: check the return value of lookup_page_ext for all call sites	2017-11-24 08:32:25 +01:00
pagewalk.c	mm/pagewalk.c: report holes in hugetlb ranges	2017-11-24 08:32:25 +01:00
percpu-km.c
percpu-vm.c
percpu.c	percpu: include linux/sched.h for cond_resched()	2018-05-16 10:06:46 +02:00
pgtable-generic.c
process_vm_access.c
quicklist.c
readahead.c
rmap.c	mm/rmap: batched invalidations should use existing api	2017-12-25 14:22:09 +01:00
shmem.c
slab.c	mm, slab: reschedule cache_reap() on the same CPU	2018-04-24 09:32:05 +02:00
slab.h
slab_common.c	slub: do not merge cache if slub_debug contains a never-merge flag	2017-10-21 17:09:05 +02:00
slob.c
slub.c	mm/slub.c: add __printf verification to slab_err()	2018-08-06 16:24:30 +02:00
sparse-vmemmap.c
sparse.c
swap.c
swap_cgroup.c	mm, swap_cgroup: reschedule when neeed in swap_cgroup_swapoff()	2017-07-05 14:37:15 +02:00
swap_state.c
swapfile.c	x86/speculation/l1tf: Limit swap file size to MAX_PA/2	2018-08-15 17:42:10 +02:00
truncate.c
userfaultfd.c
util.c	proc read mm's {arg,env}_{start,end} with mmap semaphore taken.	2018-05-26 08:48:55 +02:00
vmacache.c
vmalloc.c	mm: vmalloc: avoid racy handling of debugobjects in vunmap	2018-08-06 16:24:30 +02:00
vmpressure.c
vmscan.c	mm: fix the NULL mapping case in __isolate_lru_page()	2018-06-06 16:46:23 +02:00
vmstat.c	proc: much faster /proc/vmstat	2018-01-10 09:27:14 +01:00
workingset.c
zbud.c
zpool.c
zsmalloc.c
zswap.c	zswap: re-check zswap_is_full() after do zswap_shrink()	2018-09-05 09:18:36 +02:00