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Timur Tabi fc461a19b0 UPSTREAM: lib/vsprintf: no_hash_pointers prints all addresses as unhashed 
If the no_hash_pointers command line parameter is set, then
printk("%p") will print pointers as unhashed, which is useful for
debugging purposes.  This change applies to any function that uses
vsprintf, such as print_hex_dump() and seq_buf_printf().

A large warning message is displayed if this option is enabled.
Unhashed pointers expose kernel addresses, which can be a security
risk.

Also update test_printf to skip the hashed pointer tests if the
command-line option is set.

Signed-off-by: Timur Tabi <timur@kernel.org>
Acked-by: Petr Mladek <pmladek@suse.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Marco Elver <elver@google.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20210214161348.369023-4-timur@kernel.org

(cherry picked from commit 5ead723a20)
Bug: 181049978
Change-Id: I06c5cfdc0b4c12f38c9109179f27bf2b54ac57e8
Signed-off-by: Chris Goldsworthy <cgoldswo@codeaurora.org>
2021-02-25 21:37:05 +00:00
..
ABI ANDROID: modpost: update nits from late review 2021-02-23 16:42:22 -08:00
accounting
admin-guide UPSTREAM: lib/vsprintf: no_hash_pointers prints all addresses as unhashed 2021-02-25 21:37:05 +00:00
arm documentation: arm: sunxi: add Allwinner H6 documents 2020-10-28 11:19:24 -06:00
arm64 UPSTREAM: arm64: spectre: Rename ARM64_HARDEN_EL2_VECTORS to ARM64_SPECTRE_V3A 2021-01-28 17:57:08 +00:00
block UPSTREAM: block/keyslot-manager: introduce devm_blk_ksm_init() 2021-02-23 08:10:56 +01:00
bpf bpf: Migrate from patchwork.ozlabs.org to patchwork.kernel.org. 2020-10-11 22:05:47 +02:00
cdrom
core-api dma-mapping: document dma_{alloc,free}_pages 2020-10-23 12:07:46 +02:00
cpu-freq
crypto
dev-tools FROMGIT: kasan: clarify that only first bug is reported in HW_TAGS 2021-02-16 15:33:33 +01:00
device-mapper
devicetree UPSTREAM: dt-bindings: mmc: sdhci-msm: add ICE registers and clock 2021-02-23 08:10:57 +01:00
doc-guide docs: kerneldoc.py: add support for kerneldoc -nosymbol 2020-10-15 07:49:38 +02:00
driver-api media: vidtv.rst: add kernel-doc markups 2020-11-26 08:05:24 +01:00
fault-injection A handful of late-arriving documentation fixes. 2020-10-23 17:13:53 -07:00
fb drm fixes (round two) for 5.10-rc1 2020-10-23 13:56:34 -07:00
features s390 updates for the 5.10 merge window 2020-10-16 12:36:38 -07:00
filesystems FROMLIST: BACKPORT: procfs/dmabuf: Add inode number to /proc/*/fdinfo 2021-02-10 14:13:53 +00:00
firmware-guide Documentation: ACPI: fix spelling mistakes 2020-11-10 18:48:56 +01:00
firmware_class
fpga
gpu fbcon: Disable accelerated scrolling 2021-01-06 14:56:51 +01:00
hid
hwmon docs: hwmon: mp2975.rst: address some html build warnings 2020-10-28 11:26:10 -06:00
i2c Documentation: i2c: add testunit docs to index 2020-10-05 22:57:45 +02:00
ia64
ide
iio
infiniband
input
isdn
kbuild Merge aae5ab854e ("Merge tag 'riscv-for-linus-5.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux") into android-mainline 2020-11-30 08:20:35 +01:00
kernel-hacking
leds docs: leds: index.rst: add a missing file 2020-11-02 13:45:37 +01:00
litmus-tests
livepatch
locking Documentation: seqlock: s/LOCKTYPE/LOCKNAME/g 2020-12-30 11:54:11 +01:00
m68k
maintainer
mhi
mips dt: Remove booting-without-of.rst 2020-10-13 13:33:16 -05:00
misc-devices Documentation: remove mic/index from misc-devices/index.rst 2020-11-04 11:38:32 +01:00
netlabel
networking ANDROID: net: introduce ip_local_unbindable_ports sysctl 2021-02-09 15:49:37 +00:00
nios2
nvdimm
openrisc
parisc
PCI Documentation: better locations for sysfs-pci, sysfs-tagging 2020-10-09 09:33:23 -06:00
pcmcia
power
powerpc docs updates for v5.10-rc1 2020-10-16 15:02:21 -07:00
process net: switch to the kernel.org patchwork instance 2020-11-11 17:12:00 -08:00
RCU Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu 2020-10-09 08:21:56 +02:00
riscv
s390
scheduler Merge 50d228345a ("Merge tag 'docs-5.10' of git://git.lwn.net/linux") into android-mainline 2020-10-21 15:43:32 +02:00
scsi SPDX patches for 5.10-rc1 2020-10-14 16:19:42 -07:00
security
sh dt: Remove booting-without-of.rst 2020-10-13 13:33:16 -05:00
sound ALSA: doc: Fix reference to mixart.rst 2021-01-19 18:27:17 +01:00
sparc
sphinx A small number of fixes, plus a build tweak to respect the desire for 2020-11-03 09:57:30 -08:00
sphinx-static
spi
staging
target
timers
trace docs updates for v5.10-rc1 2020-10-16 15:02:21 -07:00
translations net: switch to the kernel.org patchwork instance 2020-11-11 17:12:00 -08:00
usb FROMGIT: usb: gadget: u_ether: support configuring interface names. 2021-01-19 09:32:57 +01:00
userspace-api docs: userspace-api: add iommu.rst to the index file 2020-10-28 11:26:10 -06:00
virt FROMGIT: KVM: arm64: Document HVC_VHE_RESTART stub hypercall 2021-02-12 15:27:47 +00:00
vm UPSTREAM: mm/page_owner: record timestamp and pid 2021-01-06 23:25:47 +00:00
w1 docs: w1: w1_therm: Fix broken xref, mistakes, clarify text 2020-10-08 09:47:15 +02:00
watchdog
x86 x86/CPU/AMD: Save AMD NodeId as cpu_die_id 2020-12-30 11:54:29 +01:00
xtensa xtensa: fix TLBTEMP area placement 2020-11-16 02:13:15 -08:00
.gitignore
asm-annotations.rst x86/entry: Emit a symbol for register restoring thunk 2021-02-03 23:28:40 +01:00
atomic_bitops.txt
atomic_t.txt
Changes
CodingStyle
conf.py This pull contains a series of warning fixes from Mauro; once applied, the 2020-11-03 13:14:14 -08:00
COPYING-logo
docutils.conf
dontdiff
index.rst
Kconfig docs: Kconfig/Makefile: add a check for broken ABI files 2020-10-30 13:08:07 +01:00
logo.gif
Makefile A small number of fixes, plus a build tweak to respect the desire for 2020-11-03 09:57:30 -08:00
memory-barriers.txt
SubmittingPatches
watch_queue.rst