Linus Torvalds 1f74b26b0f vm: make stack guard page errors return VM_FAULT_SIGSEGV rather than SIGBUS ...

commit 9c145c56d0 upstream.

The stack guard page error case has long incorrectly caused a SIGBUS
rather than a SIGSEGV, but nobody actually noticed until commit
fee7e49d45 ("mm: propagate error from stack expansion even for guard
page") because that error case was never actually triggered in any
normal situations.

Now that we actually report the error, people noticed the wrong signal
that resulted.  So far, only the test suite of libsigsegv seems to have
actually cared, but there are real applications that use libsigsegv, so
let's not wait for any of those to break.

Reported-and-tested-by: Takashi Iwai <tiwai@suse.de>
Tested-by: Jan Engelhardt <jengelh@inai.de>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> # "s390 still compiles and boots"
Cc: linux-arch@vger.kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2015-04-29 10:34:01 +02:00

..

backing-dev.c

bdi: avoid oops on device removal

2014-04-26 17:15:35 -07:00

balloon_compaction.c

…

bootmem.c

…

bounce.c

mm/bounce.c: fix a regression where MS_SNAP_STABLE (stable pages snapshotting) was ignored

2013-10-13 16:08:33 -07:00

cleancache.c

mm: cleancache: clean up cleancache_enabled

2013-04-30 17:04:01 -07:00

compaction.c

mm/compaction: fix wrong order check in compact_finished()

2015-03-18 13:22:28 +01:00

debug-pagealloc.c

…

dmapool.c

…

fadvise.c

…

failslab.c

…

filemap_xip.c

…

filemap.c

mm: memcg: handle non-error OOM situations more gracefully

2014-11-21 09:22:56 -08:00

fremap.c

mm: fix use-after-free in sys_remap_file_pages

2014-01-09 12:24:24 -08:00

frontswap.c

mm: frontswap: invalidate expired data on a dup-store failure

2014-12-16 09:09:41 -08:00

highmem.c

…

huge_memory.c

mm: numa: Do not mark PTEs pte_numa when splitting huge pages

2014-10-09 12:18:42 -07:00

hugetlb_cgroup.c

…

hugetlb.c

mm/hugetlb: add migration entry check in __unmap_hugepage_range

2015-03-18 13:22:27 +01:00

hwpoison-inject.c

…

init-mm.c

…

internal.h

…

interval_tree.c

…

Kconfig

mmKconfig: add an option to disable bounce

2013-04-29 15:54:40 -07:00

Kconfig.debug

…

kmemcheck.c

…

kmemleak-test.c

…

kmemleak.c

…

ksm.c

vm: add VM_FAULT_SIGSEGV handling support

2015-04-29 10:34:00 +02:00

maccess.c

…

madvise.c

mm: madvise: complete input validation before taking lock

2013-04-29 15:54:37 -07:00

Makefile

memcg: add memory.pressure_level events

2013-04-29 15:54:38 -07:00

memblock.c

memblock: fix missing comment of memblock_insert_region()

2013-04-29 15:54:38 -07:00

memcontrol.c

mm: memcg: handle non-error OOM situations more gracefully

2014-11-21 09:22:56 -08:00

memory_hotplug.c

mm/memory hotplug: postpone the reset of obsolete pgdat

2015-04-19 10:10:47 +02:00

memory-failure.c

mm/memory-failure.c: don't let collect_procs() skip over processes for MF_ACTION_REQUIRED

2014-06-30 20:09:42 -07:00

memory.c

vm: make stack guard page errors return VM_FAULT_SIGSEGV rather than SIGBUS

2015-04-29 10:34:01 +02:00

mempolicy.c

cpuset,mempolicy: fix sleeping function called from invalid context

2014-07-17 15:58:00 -07:00

mempool.c

…

migrate.c

mm: numa: avoid unnecessary work on the failure path

2014-01-09 12:24:23 -08:00

mincore.c

…

mlock.c

mm: try_to_unmap_cluster() should lock_page() before mlocking

2014-05-06 07:55:32 -07:00

mm_init.c

…

mmap.c

mm/mmap.c: fix arithmetic overflow in __vm_enough_memory()

2015-03-18 13:22:27 +01:00

mmu_context.c

mm: remove old aio use_mm() comment

2013-05-07 18:38:27 -07:00

mmu_notifier.c

mm: mmu_notifier: re-fix freed page still mapped in secondary MMU

2013-05-24 16:22:51 -07:00

mmzone.c

…

mprotect.c

mm: fix TLB flush race between migration, and change_protection_range

2014-01-09 12:24:23 -08:00

mremap.c

mm, thp: close race between mremap() and split_huge_page()

2014-06-07 13:25:31 -07:00

msync.c

…

nobootmem.c

mm, nobootmem: do memset() after memblock_reserve()

2013-04-29 15:54:39 -07:00

nommu.c

mm/nommu.c: fix arithmetic overflow in __vm_enough_memory()

2015-03-18 13:22:28 +01:00

oom_kill.c

mm: memcg: handle non-error OOM situations more gracefully

2014-11-21 09:22:56 -08:00

page_alloc.c

OOM, PM: OOM killed task shouldn't escape PM suspend

2014-11-14 08:47:58 -08:00

page_cgroup.c

cgroup/kmemleak: add kmemleak_free() for cgroup deallocations.

2014-11-14 08:47:59 -08:00

page_io.c

Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block

2013-05-08 10:13:35 -07:00

page_isolation.c

…

page-writeback.c

writeback: fix possible underflow in write bandwidth calculation

2015-04-19 10:10:48 +02:00

pagewalk.c

mm: pagewalk: call pte_hole() for VM_PFNMAP during walk_page_range

2015-02-11 14:48:16 +08:00

percpu-km.c

…

percpu-vm.c

percpu: perform tlb flush after pcpu_map_pages() failure

2014-10-05 14:54:13 -07:00

percpu.c

Revert "percpu: free percpu allocation info for uniprocessor system"

2014-11-14 08:47:53 -08:00

pgtable-generic.c

mm: fix TLB flush race between migration, and change_protection_range

2014-01-09 12:24:23 -08:00

process_vm_access.c

…

quicklist.c

…

readahead.c

…

rmap.c

mm: fix sleeping function warning from __put_anon_vma

2014-06-30 20:09:42 -07:00

shmem.c

shmem: fix nlink for rename overwrite directory

2014-10-05 14:54:11 -07:00

slab_common.c

slab_common: fix the check for duplicate slab names

2014-07-31 12:53:50 -07:00

slab.c

slab: fix init_lock_keys

2013-07-21 18:21:26 -07:00

slab.h

memcg: check that kmem_cache has memcg_params before accessing it

2013-09-07 22:09:58 -07:00

slob.c

…

slub.c

slub: Fix calculation of cpu slabs

2014-02-13 13:48:00 -08:00

sparse-vmemmap.c

sparse-vmemmap: specify vmemmap population range in bytes

2013-04-29 15:54:35 -07:00

sparse.c

mm, hotplug: avoid compiling memory hotremove functions when disabled

2013-04-29 15:54:37 -07:00

swap_state.c

swap: avoid read_swap_cache_async() race to deadlock while waiting on discard I/O completion

2013-06-12 16:29:45 -07:00

swap.c

mm: close PageTail race

2014-04-03 12:01:05 -07:00

swapfile.c

frontswap: fix incorrect zeroing and allocation size for frontswap_map

2013-06-12 16:29:46 -07:00

truncate.c

mm: Remove false WARN_ON from pagecache_isize_extended()

2014-11-14 08:48:00 -08:00

util.c

vm_is_stack: use for_each_thread() rather then buggy while_each_thread()

2014-10-05 14:54:16 -07:00

vmalloc.c

mm/vmalloc.c: fix an overflow bug in alloc_vmap_area()

2013-11-13 12:05:34 +09:00

vmpressure.c

memcg: add memory.pressure_level events

2013-04-29 15:54:38 -07:00

vmscan.c

mm, vmscan: prevent kswapd livelock due to pfmemalloc-throttled process being killed

2015-01-16 06:59:03 -08:00

vmstat.c

mm: numa: return the number of base pages altered by protection changes

2013-12-08 07:29:27 -08:00