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Geert Uytterhoeven ec7bea37c8 lib/vsprintf: Remove atomic-unsafe support for %pCr 
commit 666902e42f upstream.

"%pCr" formats the current rate of a clock, and calls clk_get_rate().
The latter obtains a mutex, hence it must not be called from atomic
context.

Remove support for this rarely-used format, as vsprintf() (and e.g.
printk()) must be callable from any context.

Any remaining out-of-tree users will start seeing the clock's name
printed instead of its rate.

Reported-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Fixes: 900cca2944 ("lib/vsprintf: add %pC{,n,r} format specifiers for clocks")
Link: http://lkml.kernel.org/r/1527845302-12159-5-git-send-email-geert+renesas@glider.be
To: Jia-Ju Bai <baijiaju1990@gmail.com>
To: Jonathan Corbet <corbet@lwn.net>
To: Michael Turquette <mturquette@baylibre.com>
To: Stephen Boyd <sboyd@kernel.org>
To: Zhang Rui <rui.zhang@intel.com>
To: Eduardo Valentin <edubezval@gmail.com>
To: Eric Anholt <eric@anholt.net>
To: Stefan Wahren <stefan.wahren@i2se.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-doc@vger.kernel.org
Cc: linux-clk@vger.kernel.org
Cc: linux-pm@vger.kernel.org
Cc: linux-serial@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-renesas-soc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: stable@vger.kernel.org # 4.1+
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-03 11:23:06 +02:00
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842
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fonts
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lz4
lz4: fix bogus gcc warning
2017-09-02 07:07:54 +02:00
lzo
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mpi
lib/mpi: Fix umul_ppmm() for MIPS64r6
2018-03-03 10:23:23 +01:00
raid6
Merge tag 'md/4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md
2016-10-07 09:45:43 -07:00
reed_solomon
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xz
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zlib_deflate
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zlib_inflate
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.gitignore
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argv_split.c
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asn1_decoder.c
ASN.1: check for error from ASN1_OP_END__ACT actions
2017-12-14 09:28:12 +01:00
assoc_array.c
assoc_array: Fix a buggy node-splitting case
2017-11-02 09:49:14 +01:00
atomic64_test.c
atomic64: no need for CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
2016-10-07 18:46:30 -07:00
atomic64.c
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audit.c
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bcd.c
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bch.c
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bitmap.c
lib/bitmap.c: enhance bitmap syntax
2016-10-11 15:06:30 -07:00
bitrev.c
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bsearch.c
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btree.c
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bug.c
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build_OID_registry
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bust_spinlocks.c
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chacha20.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.c: fix get_options() overflow while parsing ranges
2017-06-29 13:00:28 +02:00
compat_audit.c
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cordic.c
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cpu_rmap.c
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cpu-notifier-error-inject.c
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cpumask.c
sched/fair, cpumask: Export for_each_cpu_wrap()
2017-07-21 07:42:23 +02:00
crc7.c
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crc8.c
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crc16.c
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crc32.c
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crc32defs.h
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crc-ccitt.c
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crc-itu-t.c
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crc-t10dif.c
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ctype.c
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debug_info.c
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debug_locks.c
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debugobjects.c
lib/debugobjects: export for use in modules
2016-11-30 16:32:52 -08:00
dec_and_lock.c
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decompress_bunzip2.c
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decompress_inflate.c
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decompress_unlz4.c
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decompress_unlzma.c
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decompress_unlzo.c
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decompress_unxz.c
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decompress.c
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devres.c
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digsig.c
lib/digsig: fix dereference of NULL user_key_payload
2017-10-27 10:38:08 +02:00
div64.c
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dma-debug.c
Merge tag 'dmaengine-4.9-rc1' of git://git.infradead.org/users/vkoul/slave-dma
2016-10-06 17:13:54 -07:00
dma-noop.c
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dump_stack.c
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dynamic_debug.c
dynamic-debug-howto: fix optional/omitted ending line number to be LARGE instead of 0
2017-12-14 09:28:22 +01:00
dynamic_queue_limits.c
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earlycpio.c
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extable.c
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fault-inject.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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fdt.c
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find_bit.c
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flex_array.c
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flex_proportions.c
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gcd.c
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gen_crc32table.c
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genalloc.c
lib/genalloc.c: make the avail variable an atomic_long_t
2017-12-14 09:28:22 +01:00
glob.c
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halfmd4.c
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hexdump.c
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hweight.c
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idr.c
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inflate.c
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int_sqrt.c
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interval_tree_test.c
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interval_tree.c
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iomap_copy.c
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iomap.c
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iommu-common.c
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iommu-helper.c
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ioremap.c
mm/vmalloc: add interfaces to free unmapped page table
2018-03-28 18:39:21 +02:00
iov_iter.c
new privimitive: iov_iter_revert()
2017-04-21 09:31:21 +02:00
irq_poll.c
Merge tag 'gcc-plugins-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
2016-10-15 10:03:15 -07:00
irq_regs.c
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is_single_threaded.c
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jedec_ddr_data.c
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kasprintf.c
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Kconfig
Merge branch 'akpm' (patches from Andrew)
2016-10-07 21:38:00 -07:00
Kconfig.debug
kasan: rework Kconfig settings
2018-02-25 11:05:55 +01:00
Kconfig.kasan
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Kconfig.kgdb
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Kconfig.kmemcheck
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Kconfig.ubsan
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kfifo.c
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klist.c
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kobject_uevent.c
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kobject.c
kobject: don't use WARN for registration failures
2018-05-01 15:13:07 -07:00
kstrtox.c
lib/kstrtox.c: smaller _parse_integer()
2016-10-11 15:06:30 -07:00
kstrtox.h
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lcm.c
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libcrc32c.c
crypto: Work around deallocated stack frame reference gcc bug on sparc.
2017-06-24 07:11:17 +02:00
list_debug.c
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list_sort.c
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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-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
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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
locking/selftest: Fix output since KERN_CONT changes
2016-11-25 07:12:19 +01:00
lockref.c
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lru_cache.c
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Makefile
kcov: do not instrument lib/stackdepot.c
2016-10-11 15:06:32 -07:00
md5.c
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memory-notifier-error-inject.c
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memweight.c
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net_utils.c
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netdev-notifier-error-inject.c
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nlattr.c
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nmi_backtrace.c
nmi_backtrace: generate one-line reports for idle cpus
2016-10-07 18:46:30 -07:00
nodemask.c
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notifier-error-inject.c
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notifier-error-inject.h
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of-reconfig-notifier-error-inject.c
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oid_registry.c
509: fix printing uninitialized stack memory when OID is empty
2018-02-25 11:05:48 +01:00
once.c
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parser.c
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pci_iomap.c
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percpu_counter.c
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percpu_ida.c
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percpu_test.c
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percpu-refcount.c
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plist.c
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pm-notifier-error-inject.c
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radix-tree.c
Revert "radix tree test suite: fix compilation"
2016-12-09 10:41:42 -08:00
random32.c
Merge tag 'gcc-plugins-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
2016-10-15 10:03:15 -07:00
ratelimit.c
lib/ratelimit.c: use deferred printk() version
2017-10-12 11:51:19 +02:00
rational.c
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rbtree_test.c
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rbtree.c
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reciprocal_div.c
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rhashtable.c
rhashtable: Fix rhlist duplicates insertion
2018-03-31 18:11:33 +02:00
sbitmap.c
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scatterlist.c
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seq_buf.c
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sg_pool.c
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sg_split.c
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sha1.c
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show_mem.c
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smp_processor_id.c
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sort.c
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stackdepot.c
lib/stackdepot: export save/fetch stack for drivers
2016-11-11 08:12:37 -08:00
stmp_device.c
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string_helpers.c
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string.c
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strncpy_from_user.c
lib: harden strncpy_from_user
2016-10-11 15:06:30 -07:00
strnlen_user.c
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swiotlb.c
swiotlb: ensure that page-sized mappings are page-aligned
2017-07-05 14:40:26 +02:00
syscall.c
lib/syscall: Clear return values when no stack
2017-04-08 09:30:35 +02:00
test_bitmap.c
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test_bpf.c
bpf: fix selftests/bpf test_kmod.sh failure when CONFIG_BPF_JIT_ALWAYS_ON=y
2018-05-30 07:50:24 +02:00
test_firmware.c
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test_hash.c
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test_hexdump.c
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test_kasan.c
kasan: support use-after-scope detection
2016-11-30 16:32:52 -08:00
test_module.c
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test_printf.c
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test_rhashtable.c
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test_static_key_base.c
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test_static_keys.c
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test_user_copy.c
usercopy: Adjust tests to deal with SMAP/PAN
2017-06-14 15:06:05 +02:00
test_uuid.c
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test-kstrtox.c
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test-string_helpers.c
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textsearch.c
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timerqueue.c
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ts_bm.c
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ts_fsm.c
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ts_kmp.c
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ubsan.c
lib/ubsan: add type mismatch handler for new GCC/Clang
2018-02-17 13:21:20 +01:00
ubsan.h
lib/ubsan: add type mismatch handler for new GCC/Clang
2018-02-17 13:21:20 +01:00
ucs2_string.c
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uuid.c
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vsprintf.c
lib/vsprintf: Remove atomic-unsafe support for %pCr
2018-07-03 11:23:06 +02:00
win_minmax.c
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