Peter Zijlstra 70201a4e36 mm/tlb: Remove tlb_remove_table() non-concurrent condition ...

commit a6f572084f upstream.

Will noted that only checking mm_users is incorrect; we should also
check mm_count in order to cover CPUs that have a lazy reference to
this mm (and could do speculative TLB operations).

If removing this turns out to be a performance issue, we can
re-instate a more complete check, but in tlb_table_flush() eliding the
call_rcu_sched().

Fixes: 2672391169 ("mm, powerpc: move the RCU page-table freeing into generic code")
Reported-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Rik van Riel <riel@surriel.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: David Miller <davem@davemloft.net>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-09-09 20:04:34 +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

virtio_balloon: fix race between migration and ballooning

2016-03-03 15:07:18 -08:00

bootmem.c

…

cleancache.c

…

cma_debug.c

…

cma.c

cma: fix calculation of aligned offset

2018-01-31 12:06:09 +01:00

cma.h

…

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

mm: make compound_head() robust

2015-11-06 17:50:42 -08:00

dmapool.c

mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd

2015-11-06 17:50:42 -08:00

early_ioremap.c

mm/early_ioremap: Fix boot hang with earlyprintk=efi,keep

2018-02-25 11:03:41 +01:00

fadvise.c

…

failslab.c

mm, page_alloc: rename __GFP_WAIT to __GFP_RECLAIM

2015-11-06 17:50:42 -08:00

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

mm: fix docbook comment for get_vaddr_frames()

2015-11-05 19:34:48 -08:00

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_cgroup.c

mm: make compound_head() robust

2015-11-06 17:50:42 -08:00

hugetlb.c

mm: hugetlb: yield when prepping struct pages

2018-07-11 16:03:48 +02:00

hwpoison-inject.c

…

init-mm.c

mm: Add a user_ns owner to mm_struct and fix ptrace permission checks

2017-01-06 11:16:11 +01:00

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

mm/maccess.c: actually return -EFAULT from strncpy_from_unsafe

2015-11-05 19:34:48 -08:00

madvise.c

mm/madvise.c: fix madvise() infinite loop under special circumstances

2017-12-05 11:22:50 +01:00

Makefile

…

memblock.c

mm: consider memblock reservations for deferred memory initialization sizing

2017-06-14 13:16:26 +02:00

memcontrol.c

mm: memcg: fix use after free in mem_cgroup_iter()

2018-07-25 10:18:16 +02:00

memory_hotplug.c

base/memory, hotplug: fix a kernel oops in show_valid_zones()

2017-02-09 08:02:47 +01:00

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

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

mm/mincore: use offset_in_page macro

2015-11-05 19:34:48 -08:00

mlock.c

mlock: fix mlock count can not decrease in race condition

2017-06-07 12:06:01 +02:00

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

mm/msync: use offset_in_page macro

2015-11-05 19:34:48 -08:00

nobootmem.c

…

nommu.c

mm/nommu.c: drop unlikely inside BUG_ON()

2015-11-05 19:34:48 -08:00

oom_kill.c

mm/oom_kill.c: avoid attempting to kill init sharing same memory

2015-12-12 10:15:34 -08:00

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

mm: page_counter: let page_counter_try_charge() return bool

2015-11-05 19:34:48 -08:00

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

mm: fix invalid node in alloc_migrate_target()

2016-04-20 15:41:53 +09:00

page_owner.c

mm: check the return value of lookup_page_ext for all call sites

2017-11-24 08:32:25 +01:00

page-writeback.c

writeback: safer lock nesting

2018-04-24 09:32:12 +02:00

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

mm,thp: khugepaged: call pte flush at the time of collapse

2016-02-25 12:01:23 -08:00

process_vm_access.c

ptrace: use fsuid, fsgid, effective creds for fs access checks

2016-02-25 12:01:16 -08:00

quicklist.c

…

readahead.c

mm, fs: introduce mapping_gfp_constraint()

2015-11-06 17:50:42 -08:00

rmap.c

mm/rmap: batched invalidations should use existing api

2017-12-25 14:22:09 +01:00

shmem.c

tmpfs: fix regression hang in fallocate undo

2016-07-27 09:47:40 -07:00

slab_common.c

slub: do not merge cache if slub_debug contains a never-merge flag

2017-10-21 17:09:05 +02:00

slab.c

mm, slab: reschedule cache_reap() on the same CPU

2018-04-24 09:32:05 +02:00

slab.h

slab/slub: adjust kmem_cache_alloc_bulk API

2015-11-22 11:58:44 -08:00

slob.c

slab/slub: adjust kmem_cache_alloc_bulk API

2015-11-22 11:58:44 -08:00

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_cgroup.c

mm, swap_cgroup: reschedule when neeed in swap_cgroup_swapoff()

2017-07-05 14:37:15 +02:00

swap_state.c

…

swap.c

mm: make compound_head() robust

2015-11-06 17:50:42 -08:00

swapfile.c

x86/speculation/l1tf: Limit swap file size to MAX_PA/2

2018-08-15 17:42:10 +02:00

truncate.c

fs: add i_blocksize()

2017-06-14 13:16:24 +02:00

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

mm/vmacache: inline vmacache_valid_mm()

2015-11-05 19:34:48 -08:00

vmalloc.c

mm: vmalloc: avoid racy handling of debugobjects in vunmap

2018-08-06 16:24:30 +02:00

vmpressure.c

mm: vmpressure: fix sending wrong events on underflow

2017-03-12 06:37:25 +01:00

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

mm: workingset: fix crash in shadow node shrinker caused by replace_page_cache_page()

2016-10-28 03:01:34 -04:00

zbud.c

mm: zsmalloc: constify struct zs_pool name

2015-11-06 17:50:42 -08:00

zpool.c

mm: zsmalloc: constify struct zs_pool name

2015-11-06 17:50:42 -08:00

zsmalloc.c

zsmalloc: fix zs_can_compact() integer overflow

2016-05-18 17:06:44 -07:00

zswap.c

zswap: re-check zswap_is_full() after do zswap_shrink()

2018-09-05 09:18:36 +02:00