Linus Torvalds ac351de9dd BACKPORT: make 'user_access_begin()' do 'access_ok()' ... upstream commit 594cc251fd ("make 'user_access_begin()' do 'access_ok()'") Originally, the rule used to be that you'd have to do access_ok() separately, and then user_access_begin() before actually doing the direct (optimized) user access. But experience has shown that people then decide not to do access_ok() at all, and instead rely on it being implied by other operations or similar. Which makes it very hard to verify that the access has actually been range-checked. If you use the unsafe direct user accesses, hardware features (either SMAP - Supervisor Mode Access Protection - on x86, or PAN - Privileged Access Never - on ARM) do force you to use user_access_begin(). But nothing really forces the range check. By putting the range check into user_access_begin(), we actually force people to do the right thing (tm), and the range check vill be visible near the actual accesses. We have way too long a history of people trying to avoid them. Bug: 135368228 Change-Id: I4ca0e4566ea080fa148c5e768bb1a0b6f7201c01 Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2019-09-12 11:28:03 +00:00
..
acpi
asm-generic	This is the 4.19.68 stable release	2019-08-25 14:19:34 +02:00
clocksource
crypto	crypto: speck - remove Speck	2019-04-03 15:25:12 -07:00
drm	This is the 4.19.68 stable release	2019-08-25 14:19:34 +02:00
dt-bindings
keys	keys: Fix dependency loop between construction record and auth key	2019-03-23 20:09:48 +01:00
kvm	KVM: arm/arm64: Sync ICH_VMCR_EL2 back when about to block	2019-08-25 10:47:59 +02:00
linux	BACKPORT: make 'user_access_begin()' do 'access_ok()'	2019-09-12 11:28:03 +00:00
math-emu
media	media: vb2: add waiting_in_dqbuf flag	2019-05-31 06:46:04 -07:00
memory
misc
net	This is the 4.19.72 stable release	2019-09-10 10:48:21 +01:00
pcmcia
ras
rdma	IB/mlx5: Report correctly tag matching rendezvous capability	2019-07-26 09:14:27 +02:00
scsi	scsi: fcoe: Embed fc_rport_priv in fcoe_rport structure	2019-08-09 17:52:27 +02:00
soc
sound	ALSA: compress: Fix regression on compressed capture streams	2019-08-16 10:12:47 +02:00
target	scsi: target/core: Make sure that target_wait_for_sess_cmds() waits long enough	2019-01-26 09:32:38 +01:00
trace	This is the 4.19.69 stable release	2019-09-02 17:39:29 +02:00
uapi	UPSTREAM: dma-buf: add DMA_BUF_SET_NAME ioctls	2019-08-19 23:08:58 +00:00
video	udlfb: introduce a rendering mutex	2019-05-25 18:23:30 +02:00
xen	xen/events: fix binding user event channels to cpus	2019-07-26 09:14:25 +02:00