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Liang Wang 854f32648b lib: use PFN_PHYS() in devmem_is_allowed() 
The physical address may exceed 32 bits on 32-bit systems with more than
32 bits of physcial address.  Use PFN_PHYS() in devmem_is_allowed(), or
the physical address may overflow and be truncated.

We found this bug when mapping a high addresses through devmem tool,
when CONFIG_STRICT_DEVMEM is enabled on the ARM with ARM_LPAE and devmem
is used to map a high address that is not in the iomem address range, an
unexpected error indicating no permission is returned.

This bug was initially introduced from v2.6.37, and the function was
moved to lib in v5.11.

Link: https://lkml.kernel.org/r/20210731025057.78825-1-wangliang101@huawei.com
Fixes: 087aaffcdf ("ARM: implement CONFIG_STRICT_DEVMEM by disabling access to RAM via /dev/mem")
Fixes: 527701eda5 ("lib: Add a generic version of devmem_is_allowed()")
Signed-off-by: Liang Wang <wangliang101@huawei.com>
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Cc: Palmer Dabbelt <palmerdabbelt@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Liang Wang <wangliang101@huawei.com>
Cc: Xiaoming Ni <nixiaoming@huawei.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: <stable@vger.kernel.org>	[2.6.37+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2021-08-13 14:09:32 -10:00
..
842 lib: 842: no need to check return value of debugfs_create functions 2019-07-03 16:57:17 +02:00
crypto crypto: doc - fix kernel-doc notation in chacha.c and af_alg.c 2021-04-22 17:31:29 +10:00
dim Revert "lib: Revert use of fallthrough pseudo-keyword in lib/" 2020-11-18 14:15:17 -06:00
fonts lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
kunit linux-kselftest-kunit-fixes-5.14-rc1 2021-07-02 12:58:26 -07:00
livepatch Kbuild updates for v5.9 2020-08-09 14:10:26 -07:00
lz4 lz4_decompress: declare LZ4_decompress_safe_withPrefix64k static 2021-07-01 11:06:05 -07:00
lzo lib/lzo/lzo1x_compress.c: make lzogeneric1x_1_compress() static 2020-12-15 22:46:19 -08:00
math lib/math/rational: add Kunit test cases 2021-07-01 11:06:05 -07:00
mpi lib/mpi: fix spelling mistakes 2021-07-01 11:06:05 -07:00
pldmfw lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
raid6 lib/raid6: Let $(UNROLL) rules work with macOS userland 2021-01-04 10:38:11 +09:00
reed_solomon lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
vdso lib/vdso: Add vdso_data pointer as input to __arch_get_timens_vdso_data() 2021-04-14 23:04:44 +10:00
xz lib/decompressors: fix spelling mistakes 2021-07-01 11:06:05 -07:00
zlib_deflate
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zlib_dfltcc
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zlib_inflate lib/decompressors: fix spelling mistakes 2021-07-01 11:06:05 -07:00
zstd lib/decompressors: fix spelling mistakes 2021-07-01 11:06:05 -07:00
.gitignore .gitignore: prefix local generated files with a slash 2021-05-02 00:43:35 +09:00
Kconfig lib/test_string.c: move string selftest in the Runtime Testing menu 2021-07-30 10:14:39 -07:00
Kconfig.debug lib/test_string.c: move string selftest in the Runtime Testing menu 2021-07-30 10:14:39 -07:00
Kconfig.kasan
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Kconfig.kcsan kcsan: Make test follow KUnit style recommendations 2021-03-08 14:27:43 -08:00
Kconfig.kfence kfence: await for allocation using wait_event 2021-05-05 11:27:27 -07:00
Kconfig.kgdb kgdb: Honour the kprobe blocklist when setting breakpoints 2020-09-28 12:14:08 +01:00
Kconfig.ubsan ubsan: remove overflow checks 2021-02-26 09:41:05 -08:00
Makefile This pull request contains the following changes for UML: 2021-07-09 10:19:13 -07:00
argv_split.c
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ashldi3.c
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ashrdi3.c
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asn1_decoder.c Revert "lib: Revert use of fallthrough pseudo-keyword in lib/" 2020-11-18 14:15:17 -06:00
asn1_encoder.c lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
assoc_array.c Revert "lib: Revert use of fallthrough pseudo-keyword in lib/" 2020-11-18 14:15:17 -06:00
atomic64.c
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atomic64_test.c
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audit.c
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bcd.c
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bch.c lib/bch.c: fix a typo in the file bch.c 2021-05-06 19:24:12 -07:00
bitfield_kunit.c lib: kunit: Fix compilation test when using TEST_BIT_FIELD_COMPILE 2020-10-16 13:25:14 -06:00
bitmap.c gpio: updates for v5.14 2021-07-05 11:48:14 -07:00
bitrev.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
bootconfig.c
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bsearch.c
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btree.c
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bucket_locks.c
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bug.c bug: Assign values once in bug_get_file_line() 2021-04-01 09:54:37 +01:00
build_OID_registry
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buildid.c kdump: use vmlinux_build_id to simplify 2021-07-08 11:48:22 -07:00
bust_spinlocks.c
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check_signature.c
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checksum.c
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clz_ctz.c
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clz_tab.c
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cmdline.c lib/cmdline: Export next_arg() for being used in modules 2021-05-05 16:07:40 +02:00
cmdline_kunit.c lib/cmdline_kunit: Remove a cast which are no-longer required 2021-06-23 16:41:41 -06:00
cmpdi2.c
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compat_audit.c
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cpu_rmap.c lib: cpu_rmap: Use pr_warn instead of pr_warning 2019-10-18 15:01:57 +02:00
cpumask.c
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crc-ccitt.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230 2019-06-19 17:09:06 +02:00
crc-itu-t.c
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crc-t10dif.c
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crc4.c
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crc7.c
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crc8.c lib: crc8: pointer to data block should be const 2021-05-06 19:24:12 -07:00
crc16.c
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crc32.c
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crc32defs.h
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crc32test.c lib/crc32test: remove extra local_irq_disable/enable 2020-11-02 12:14:19 -08:00
crc64.c lib: crc64: fix kernel-doc warning 2021-06-05 08:58:12 -07:00
ctype.c
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debug_info.c
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debug_locks.c
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debugobjects.c debugobjects: Free per CPU pool after CPU unplug 2020-10-01 16:13:54 +02:00
dec_and_lock.c
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decompress.c
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decompress_bunzip2.c
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decompress_inflate.c
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decompress_unlz4.c lib/decompress_unlz4.c: correctly handle zero-padding around initrds. 2021-07-01 11:06:06 -07:00
decompress_unlzma.c
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decompress_unlzo.c lib/decompressors: remove set but not used variabled 'level' 2021-07-01 11:06:06 -07:00
decompress_unxz.c
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decompress_unzstd.c lib/decompressors: fix spelling mistakes 2021-07-01 11:06:05 -07:00
devmem_is_allowed.c lib: use PFN_PHYS() in devmem_is_allowed() 2021-08-13 14:09:32 -10:00
devres.c lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
digsig.c
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dump_stack.c dump_stack: add vmlinux build ID to stack traces 2021-07-08 11:48:22 -07:00
dynamic_debug.c lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
dynamic_queue_limits.c lib: dynamic_queue_limits: delete duplicated words + fix typo 2020-10-16 11:11:20 -07:00
earlycpio.c
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errname.c kernel.h: split out mathematical helpers 2020-12-15 22:46:15 -08:00
error-inject.c
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errseq.c kernel.h: split out mathematical helpers 2020-12-15 22:46:15 -08:00
extable.c sparc32: switch to generic extables 2021-01-03 20:05:18 -05:00
fault-inject-usercopy.c
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fault-inject.c fault_inject: Don't rely on "return value" from WRITE_ONCE() 2020-04-15 21:36:41 +01:00
fdt.c
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fdt_addresses.c
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fdt_empty_tree.c
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fdt_ro.c
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fdt_rw.c
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fdt_strerror.c
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fdt_sw.c
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fdt_wip.c
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find_bit.c lib: add fast path for find_first_*_bit() and find_last_bit() 2021-05-06 19:24:12 -07:00
find_bit_benchmark.c
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flex_proportions.c
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gen_crc32table.c
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gen_crc64table.c
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genalloc.c lib/genalloc: add parameter description to fix doc compile warning 2021-05-06 19:24:12 -07:00
generic-radix-tree.c
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glob.c Revert "lib: Revert use of fallthrough pseudo-keyword in lib/" 2020-11-18 14:15:17 -06:00
globtest.c
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hexdump.c kernel.h: split out min()/max() et al. helpers 2020-10-16 11:11:19 -07:00
hweight.c x86/kconfig: Disable CONFIG_GENERIC_HWEIGHT and remove __HAVE_ARCH_SW_HWEIGHT 2019-05-13 11:07:33 +02:00
idr.c XArray updates for 5.9 2020-10-20 14:39:37 -07:00
inflate.c
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interval_tree.c
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interval_tree_test.c
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iomap.c iomap: constify ioreadX() iomem argument (as in generic implementation) 2020-08-14 19:56:57 -07:00
iomap_copy.c
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iommu-helper.c
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iov_iter.c iov_iter: remove uaccess_kernel() warning from iov_iter_init() 2021-07-04 16:12:42 -07:00
irq_poll.c
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irq_regs.c
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is_single_threaded.c
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kasprintf.c
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kfifo.c lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
klist.c
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kobject.c kobject: Drop unneeded conditional in __kobject_del() 2020-09-07 11:24:17 +02:00
kobject_uevent.c
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kstrtox.c Merge branch 'akpm' (patches from Andrew) 2021-07-02 12:08:10 -07:00
kstrtox.h
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libcrc32c.c
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linear_ranges.c lib/linear_ranges: fix repeated words & one typo 2020-12-28 12:24:47 +00:00
list-test.c
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list_debug.c
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list_sort.c lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
llist.c
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locking-selftest-hardirq.h
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locking-selftest-mutex.h
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locking-selftest-rlock-hardirq.h
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locking-selftest-rlock-softirq.h
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locking-selftest-rlock.h
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locking-selftest-rsem.h
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locking-selftest-rtmutex.h
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locking-selftest-softirq.h
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locking-selftest-spin-hardirq.h
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locking-selftest-spin-softirq.h
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locking-selftest-spin.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
locking-selftest-wlock-hardirq.h
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locking-selftest-wlock-softirq.h
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locking-selftest-wlock.h
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locking-selftest-wsem.h
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locking-selftest.c lockdep/selftest: Remove wait-type RCU_CALLBACK tests 2021-06-22 16:42:08 +02:00
lockref.c
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logic_iomem.c
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logic_pio.c
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lru_cache.c lib: remove "expecting prototype" kernel-doc warnings 2021-04-16 16:10:37 -07:00
lshrdi3.c
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memcat_p.c
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memory-notifier-error-inject.c
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memregion.c
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memweight.c
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muldi3.c
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net_utils.c
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netdev-notifier-error-inject.c
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nlattr.c lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
nmi_backtrace.c
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nodemask.c
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notifier-error-inject.c
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notifier-error-inject.h
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objagg.c lib: objagg: Replace zero-length arrays with flexible-array member 2020-02-16 18:33:00 -08:00
of-reconfig-notifier-error-inject.c
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oid_registry.c lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
once.c once: Fix panic when module unload 2021-08-08 13:00:20 +01:00
packing.c lib: packing: add documentation for pbuflen argument 2020-06-28 20:45:27 -07:00
parman.c lib: remove "expecting prototype" kernel-doc warnings 2021-04-16 16:10:37 -07:00
parser.c kernel.h: split out kstrtox() and simple_strtox() to a separate header 2021-07-01 11:06:05 -07:00
pci_iomap.c
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percpu-refcount.c percpu_ref: Don't opencode percpu_ref_is_dying 2021-05-13 03:27:38 +00:00
percpu_counter.c lib/percpu_counter: tame kernel-doc compile warning 2021-05-06 19:24:12 -07:00
percpu_test.c
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plist.c
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pm-notifier-error-inject.c
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radix-tree.c lib: remove "expecting prototype" kernel-doc warnings 2021-04-16 16:10:37 -07:00
random32.c
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ratelimit.c
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rbtree.c
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rbtree_test.c
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refcount.c lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
rhashtable.c lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
sbitmap.c lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
scatterlist.c lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
seq_buf.c lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
sg_pool.c
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sg_split.c
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sha1.c crypto: sha - split sha.h into sha1.h and sha2.h 2020-11-20 14:45:33 +11:00
show_mem.c
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siphash.c
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slub_kunit.c mm/slub, kunit: add a KUnit test for SLUB debugging functionality 2021-06-29 10:53:46 -07:00
smp_processor_id.c
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sort.c lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
stackdepot.c lib: fix spelling mistakes 2021-07-08 11:48:20 -07:00
stmp_device.c
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string.c lib: memscan() fixlet 2021-07-01 11:06:05 -07:00
string_helpers.c seq_file: drop unused *_escape_mem_ascii() 2021-07-01 11:06:05 -07:00
strncpy_from_user.c lib/strncpy_from_user.c: Mask out bytes after NUL terminator. 2020-11-19 11:56:16 -08:00
strnlen_user.c
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syscall.c
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test-kstrtox.c
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test-string_helpers.c lib/test-string_helpers: add test cases for new features 2021-07-01 11:06:05 -07:00
test_bitmap.c bitmap_parse: Support 'all' semantics 2021-05-10 15:38:20 -07:00
test_bitops.c lib/test: fix spelling mistakes 2021-07-08 11:48:20 -07:00
test_bits.c
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test_blackhole_dev.c
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test_bpf.c lib/test: fix spelling mistakes 2021-07-08 11:48:20 -07:00
test_debug_virtual.c
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test_firmware.c firmware: replace HOTPLUG with UEVENT in FW_ACTION defines 2021-05-13 16:14:45 +02:00
test_fpu.c selftests/fpu: Fix debugfs_simple_attr.cocci warning 2021-01-18 11:03:26 +01:00
test_free_pages.c
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test_hash.c
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test_hexdump.c
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test_hmm.c lib/test_hmm: remove set but unused page variable 2021-07-15 10:13:49 -07:00
test_hmm_uapi.h
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test_ida.c
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test_kasan.c lib/test: fix spelling mistakes 2021-07-08 11:48:20 -07:00
test_kasan_module.c lib/test_kasan_module.c: suppress unused var warning 2021-04-09 14:54:23 -07:00
test_kmod.c lib/test: fix spelling mistakes 2021-07-08 11:48:20 -07:00
test_linear_ranges.c
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test_list_sort.c lib/test: convert lib/test_list_sort.c to use KUnit 2021-06-25 11:31:03 -06:00
test_lockup.c lib/test_lockup.c: minimum fix to get it compiled on PREEMPT_RT 2020-12-15 22:46:16 -08:00
test_memcat_p.c
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test_meminit.c
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test_min_heap.c
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test_module.c
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test_objagg.c
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test_overflow.c
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test_parman.c
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test_printf.c printk changes for 5.14 2021-06-29 12:07:18 -07:00
test_rhashtable.c rhashtable: avoid -Wrestrict warning on overlapping sprintf output 2021-03-24 15:16:09 -07:00
test_scanf.c lib/test: fix spelling mistakes 2021-07-08 11:48:20 -07:00
test_siphash.c
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test_sort.c
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test_stackinit.c
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test_static_key_base.c
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test_static_keys.c
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test_string.c lib/test_string.c: allow module removal 2021-07-01 11:06:05 -07:00
test_strscpy.c
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test_sysctl.c lib: test_sysctl: delete duplicated words 2020-10-16 11:11:20 -07:00
test_ubsan.c ubsan: remove overflow checks 2021-02-26 09:41:05 -08:00
test_user_copy.c
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test_uuid.c uuid: fix incorrect uuid_equal conversion in test_uuid_test 2017-07-21 09:38:30 +02:00
test_vmalloc.c lib/test_vmalloc.c: add a new 'nr_threads' parameter 2021-04-30 11:20:40 -07:00
test_xarray.c
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textsearch.c
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timerqueue.c rbtree, timerqueue: Use rb_add_cached() 2021-02-17 14:08:01 +01:00
ts_bm.c
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ts_fsm.c Revert "lib: Revert use of fallthrough pseudo-keyword in lib/" 2020-11-18 14:15:17 -06:00
ts_kmp.c
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ubsan.c
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ubsan.h ubsan: implement __ubsan_handle_alignment_assumption 2021-02-05 11:03:47 -08:00
ucmpdi2.c
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ucs2_string.c
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usercopy.c
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uuid.c
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vsprintf.c module: add printk formats to add module build ID to stacktraces 2021-07-08 11:48:22 -07:00
win_minmax.c
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xarray.c XArray: Fix splitting to non-zero orders 2021-03-30 13:42:33 -04:00
xxhash.c
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