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android_kernel_samsung_univ.../lib
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Chintan Pandya 29f475cbff ioremap: Update pgtable free interfaces with addr 
commit 785a19f9d1dd8a4ab2d0633be4656653bd3de1fc upstream.

The following kernel panic was observed on ARM64 platform due to a stale
TLB entry.

 1. ioremap with 4K size, a valid pte page table is set.
 2. iounmap it, its pte entry is set to 0.
 3. ioremap the same address with 2M size, update its pmd entry with
    a new value.
 4. CPU may hit an exception because the old pmd entry is still in TLB,
    which leads to a kernel panic.

Commit b6bdb7517c3d ("mm/vmalloc: add interfaces to free unmapped page
table") has addressed this panic by falling to pte mappings in the above
case on ARM64.

To support pmd mappings in all cases, TLB purge needs to be performed
in this case on ARM64.

Add a new arg, 'addr', to pud_free_pmd_page() and pmd_free_pte_page()
so that TLB purge can be added later in seprate patches.

[toshi.kani@hpe.com: merge changes, rewrite patch description]
Fixes: 28ee90fe6048 ("x86/mm: implement free pmd/pte page interfaces")
Signed-off-by: Chintan Pandya <cpandya@codeaurora.org>
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: mhocko@suse.com
Cc: akpm@linux-foundation.org
Cc: hpa@zytor.com
Cc: linux-mm@kvack.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: Will Deacon <will.deacon@arm.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: stable@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20180627141348.21777-3-toshi.kani@hpe.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-17 20:56:45 +02:00
..
842 crypto: 842 - Add CRC and validation support 2015-10-14 22:23:17 +08:00
fonts
lz4 lib: lz4: fixed zram with lz4 on big endian machines 2016-05-04 14:48:41 -07:00
lzo
mpi lib/mpi: Fix umul_ppmm() for MIPS64r6 2018-03-03 10:19:42 +01:00
raid6 md/raid6: delta syndrome for ARM NEON 2015-08-31 19:29:05 +02:00
reed_solomon
xz
zlib_deflate zlib_deflate/deftree: remove bi_reverse() 2015-09-10 13:29:01 -07:00
zlib_inflate
.gitignore
argv_split.c
asn1_decoder.c ASN.1: check for error from ASN1_OP_END__ACT actions 2017-12-16 10:33:48 +01:00
assoc_array.c assoc_array: Fix a buggy node-splitting case 2017-11-02 09:40:49 +01:00
atomic64_test.c x86/cpufeature: Carve out X86_FEATURE_* 2018-07-17 11:31:44 +02:00
atomic64.c
audit.c
bcd.c
bch.c
bitmap.c lib/bitmap.c: bitmap_parselist can accept string with whitespaces on head or tail 2015-09-10 13:29:01 -07:00
bitrev.c
bsearch.c
btree.c treewide: Remove old email address 2015-11-23 09:44:58 +01:00
bug.c
build_OID_registry
bust_spinlocks.c
check_signature.c
checksum.c
clz_ctz.c
clz_tab.c
cmdline.c lib/cmdline.c: fix get_options() overflow while parsing ranges 2017-06-29 12:48:51 +02:00
compat_audit.c
cordic.c
cpu_rmap.c
cpu-notifier-error-inject.c
cpumask.c
crc-ccitt.c
crc-itu-t.c
crc-t10dif.c
crc7.c
crc8.c
crc16.c
crc32.c
crc32defs.h
ctype.c
debug_info.c
debug_locks.c
debugobjects.c
dec_and_lock.c
decompress_bunzip2.c lib/decompressors: use real out buf size for gunzip with kernel 2015-09-10 13:29:01 -07:00
decompress_inflate.c lib/decompressors: use real out buf size for gunzip with kernel 2015-09-10 13:29:01 -07:00
decompress_unlz4.c lib/decompressors: use real out buf size for gunzip with kernel 2015-09-10 13:29:01 -07:00
decompress_unlzma.c lib/decompress_unlzma: Do a NULL check for pointer 2015-09-10 13:29:01 -07:00
decompress_unlzo.c lib/decompressors: use real out buf size for gunzip with kernel 2015-09-10 13:29:01 -07:00
decompress_unxz.c lib/decompressors: use real out buf size for gunzip with kernel 2015-09-10 13:29:01 -07:00
decompress.c
devres.c devres: fix a for loop bounds check 2015-10-05 04:49:54 +01:00
digsig.c lib/digsig: fix dereference of NULL user_key_payload 2017-10-27 10:23:17 +02:00
div64.c remove abs64() 2015-11-09 15:11:24 -08:00
dma-debug.c dma-debug: avoid spinlock recursion when disabling dma-debug 2016-06-07 18:14:37 -07:00
dump_stack.c dump_stack: avoid potential deadlocks 2016-02-25 12:01:23 -08:00
dynamic_debug.c dynamic-debug-howto: fix optional/omitted ending line number to be LARGE instead of 0 2017-12-16 10:33:54 +01:00
dynamic_queue_limits.c
earlycpio.c
extable.c
fault-inject.c fault-inject: fix inverted interval/probability values in printk 2015-10-23 17:55:10 +09:00
fdt_empty_tree.c
fdt_ro.c
fdt_rw.c
fdt_strerror.c
fdt_sw.c
fdt_wip.c
fdt.c
find_bit.c
flex_array.c
flex_proportions.c
gcd.c
gen_crc32table.c
genalloc.c lib/genalloc.c: make the avail variable an atomic_long_t 2017-12-16 10:33:54 +01:00
glob.c
halfmd4.c lib/halfmd4.c: use rol32 inline function in the ROUND macro 2015-11-06 17:50:42 -08:00
hexdump.c lib/hexdump.c: truncate output in case of overflow 2015-11-06 17:50:42 -08:00
hweight.c x86/hweight: Get rid of the special calling convention 2018-04-24 09:32:04 +02:00
idr.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
inflate.c
int_sqrt.c
interval_tree_test.c
interval_tree.c
iomap_copy.c
iomap.c
iommu-common.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc 2015-11-05 16:34:48 -08:00
iommu-helper.c
ioremap.c ioremap: Update pgtable free interfaces with addr 2018-08-17 20:56:45 +02:00
iov_iter.c fix iov_iter_fault_in_readable() 2016-09-24 10:07:43 +02:00
irq_regs.c
is_single_threaded.c lib/is_single_threaded.c: change current_is_single_threaded() to use for_each_thread() 2015-11-06 17:50:42 -08:00
jedec_ddr_data.c
kasprintf.c lib/kasprintf.c: introduce kvasprintf_const 2015-11-06 17:50:42 -08:00
Kconfig lib: sw842: select crc32 2016-03-03 15:07:24 -08:00
Kconfig.debug kasan: rework Kconfig settings 2018-02-25 11:03:52 +01:00
Kconfig.kasan mm, slub, kasan: enable user tracking by default with KASAN=y 2015-11-05 19:34:48 -08:00
Kconfig.kgdb
Kconfig.kmemcheck
kfifo.c
klist.c klist: fix starting point removed bug in klist iterators 2016-02-25 12:01:16 -08:00
kobject_uevent.c
kobject.c kobject: don't use WARN for registration failures 2018-05-02 07:53:42 -07:00
kstrtox.c lib: add "on"/"off" support to kstrtobool 2016-10-28 03:01:31 -04:00
kstrtox.h
lcm.c
libcrc32c.c crypto: crc32c - Fix crc32c soft dependency 2016-02-17 12:31:04 -08:00
list_debug.c
list_sort.c
llist.c lib/llist.c: fix data race in llist_del_first 2015-11-06 17:50:42 -08:00
locking-selftest-hardirq.h
locking-selftest-mutex.h
locking-selftest-rlock-hardirq.h
locking-selftest-rlock-softirq.h
locking-selftest-rlock.h
locking-selftest-rsem.h
locking-selftest-softirq.h
locking-selftest-spin-hardirq.h
locking-selftest-spin-softirq.h
locking-selftest-spin.h
locking-selftest-wlock-hardirq.h
locking-selftest-wlock-softirq.h
locking-selftest-wlock.h
locking-selftest-wsem.h
locking-selftest.c
lockref.c locking/lockref: Remove homebrew cmpxchg64_relaxed() macro definition 2015-08-12 11:59:04 +02:00
lru_cache.c
Makefile x86/hweight: Get rid of the special calling convention 2018-04-24 09:32:04 +02:00
md5.c
memory-notifier-error-inject.c
memweight.c
net_utils.c
nlattr.c
nmi_backtrace.c ARM: 8439/1: Fix backtrace generation when IPI is masked 2015-10-03 16:40:51 +01:00
notifier-error-inject.c
notifier-error-inject.h
of-reconfig-notifier-error-inject.c
oid_registry.c 509: fix printing uninitialized stack memory when OID is empty 2018-02-25 11:03:40 +01:00
once.c once: make helper generic for calling functions once 2015-10-08 05:26:36 -07:00
parser.c
pci_iomap.c libnvdimm for 4.3: 2015-09-08 14:35:59 -07:00
percpu_counter.c
percpu_ida.c mm, page_alloc: rename __GFP_WAIT to __GFP_RECLAIM 2015-11-06 17:50:42 -08:00
percpu_test.c
percpu-refcount.c
plist.c
pm-notifier-error-inject.c
proportions.c treewide: Remove old email address 2015-11-23 09:44:58 +01:00
radix-tree.c radix-tree: fix race in gang lookup 2016-02-25 12:01:23 -08:00
random32.c random32: add prandom_init_once helper for own rngs 2015-10-08 05:26:38 -07:00
ratelimit.c
rational.c
rbtree_test.c
rbtree.c
reciprocal_div.c
rhashtable.c lib/rhashtable: consider param->min_size when setting initial table size 2018-07-25 10:18:16 +02:00
scatterlist.c scatterlist: allow limited chaining without ARCH_HAS_SG_CHAIN 2015-08-17 08:12:51 -06:00
seq_buf.c
sg_split.c lib: scatterlist: add sg splitting function 2015-08-24 14:28:01 -06:00
sha1.c
show_mem.c lib/show_mem.c: correct reserved memory calculation 2015-09-08 15:35:28 -07:00
smp_processor_id.c
sort.c
stmp_device.c
string_helpers.c string_helpers: fix precision loss for some inputs 2016-02-25 12:01:21 -08:00
string.c lib: move strtobool() to kstrtobool() 2016-10-28 03:01:30 -04:00
strncpy_from_user.c lib: move strncpy_from_unsafe() into mm/maccess.c 2015-08-31 12:36:10 -07:00
strnlen_user.c
swiotlb.c swiotlb: ensure that page-sized mappings are page-aligned 2017-07-05 14:37:20 +02:00
syscall.c
test_bpf.c bpf: fix selftests/bpf test_kmod.sh failure when CONFIG_BPF_JIT_ALWAYS_ON=y 2018-05-30 07:48:56 +02:00
test_firmware.c test: firmware_class: report errors properly on failure 2017-11-15 17:13:13 +01:00
test_kasan.c lib: test_kasan: add some testcases 2015-11-05 19:34:48 -08:00
test_module.c
test_printf.c test_printf: test printf family at runtime 2015-11-06 17:50:42 -08:00
test_rhashtable.c rhashtable-test: extend to test concurrency 2015-08-17 14:33:47 -07:00
test_static_key_base.c locking/static_keys: Provide a selftest 2015-08-03 11:51:12 +02:00
test_static_keys.c locking/static_keys: Make verify_keys() static 2015-08-05 09:53:40 +02:00
test_user_copy.c usercopy: Adjust tests to deal with SMAP/PAN 2017-06-14 13:16:27 +02:00
test-hexdump.c
test-kstrtox.c kstrto*: accept "-0" for signed conversion 2015-09-10 13:29:01 -07:00
test-string_helpers.c lib/test-string_helpers.c: fix and improve string_get_size() tests 2016-05-11 11:21:26 +02:00
textsearch.c
timerqueue.c
ts_bm.c
ts_fsm.c
ts_kmp.c
ucs2_string.c lib/ucs2_string: Correct ucs2 -> utf8 conversion 2016-03-03 15:07:09 -08:00
usercopy.c
uuid.c
vsprintf.c lib/vsprintf: Remove atomic-unsafe support for %pCr 2018-07-03 11:21:27 +02:00