Linus Torvalds 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. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2019-01-04 12:56:09 -08:00
..
bpf	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
cgroup	Merge branch 'for-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2018-12-29 10:57:20 -08:00
configs	kvm_config: add CONFIG_VIRTIO_MENU	2018-10-24 20:55:56 -04:00
debug	kdb: use bool for binary state indicators	2018-12-30 08:31:52 +00:00
dma	DMA mapping updates for Linux 4.21	2018-12-28 14:12:21 -08:00
events	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
gcov	gcov: remove CONFIG_GCOV_FORMAT_AUTODETECT	2018-06-08 18:56:02 +09:00
irq	genirq/affinity: Add is_managed to struct irq_affinity_desc	2018-12-19 11:32:08 +01:00
livepatch	livepatch: Replace synchronize_sched() with synchronize_rcu()	2018-12-01 12:38:50 -08:00
locking	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-12-26 14:25:52 -08:00
power	mm: convert totalram_pages and totalhigh_pages variables to atomic	2018-12-28 12:11:47 -08:00
printk	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
rcu	rcutorture: Don't do busted forward-progress testing	2018-12-01 12:45:42 -08:00
sched	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
time	y2038: more syscalls and cleanups	2018-12-28 12:45:04 -08:00
trace	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
.gitignore
acct.c
async.c
audit_fsnotify.c	audit: minimize our use of audit_log_format()	2018-11-26 18:40:00 -05:00
audit_tree.c	audit: minimize our use of audit_log_format()	2018-11-26 18:40:00 -05:00
audit_watch.c	audit: minimize our use of audit_log_format()	2018-11-26 18:40:00 -05:00
audit.c	audit: remove duplicated include from audit.c	2018-12-14 12:09:30 -05:00
audit.h	audit: use current whenever possible	2018-11-26 18:41:21 -05:00
auditfilter.c	audit: rename FILTER_TYPE to FILTER_EXCLUDE	2018-06-19 10:39:54 -04:00
auditsc.c	audit: use current whenever possible	2018-11-26 18:41:21 -05:00
backtracetest.c
bounds.c	kbuild: fix kernel/bounds.c 'W=1' warning	2018-10-31 08:54:14 -07:00
capability.c
compat.c	make 'user_access_begin()' do 'access_ok()'	2019-01-04 12:56:09 -08:00
configs.c
context_tracking.c
cpu_pm.c
cpu.c	x86/speculation: Rework SMT state change	2018-11-28 11:57:07 +01:00
crash_core.c	kernel/crash_core.c: print timestamp using time64_t	2018-08-22 10:52:47 -07:00
crash_dump.c
cred.c	cred: export get_task_cred().	2018-12-19 13:52:44 -05:00
delayacct.c	delayacct: track delays from thrashing cache pages	2018-10-26 16:26:32 -07:00
dma.c
elfcore.c
exec_domain.c
exit.c	make 'user_access_begin()' do 'access_ok()'	2019-01-04 12:56:09 -08:00
extable.c
fail_function.c	kernel/fail_function.c: remove meaningless null pointer check before debugfs_remove_recursive	2018-10-31 08:54:12 -07:00
fork.c	kernel/fork.c: mark 'stack_vm_area' with __maybe_unused	2018-12-28 12:11:52 -08:00
freezer.c	PM / reboot: Eliminate race between reboot and suspend	2018-08-06 12:35:20 +02:00
futex.c	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
groups.c
hung_task.c	kernel: hung_task.c: disable on suspend	2018-10-25 18:45:08 +02:00
iomem.c
irq_work.c
jump_label.c	Merge branch 'x86/build' into locking/core, to pick up dependent patches and unify jump-label work	2018-10-16 17:30:11 +02:00
kallsyms.c	kallsyms: reduce size a little on 64-bit	2018-09-10 22:54:33 +09:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt	kconfig: warn no new line at end of file	2018-12-15 17:44:35 +09:00
kcov.c	kernel/kcov.c: mark funcs in __sanitizer_cov_trace_pc() as notrace	2018-11-30 14:56:14 -08:00
kexec_core.c	mm: convert totalram_pages and totalhigh_pages variables to atomic	2018-12-28 12:11:47 -08:00
kexec_file.c	kexec_file: kexec_walk_memblock() only walks a dedicated region at kdump	2018-12-06 14:38:50 +00:00
kexec_internal.h
kexec.c	kexec: add call to LSM hook in original kexec_load syscall	2018-07-16 12:31:57 -07:00
kmod.c
kprobes.c	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-12-26 14:45:18 -08:00
ksysfs.c
kthread.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-08-13 11:25:07 -07:00
latencytop.c
Makefile	y2038: more syscalls and cleanups	2018-12-28 12:45:04 -08:00
memremap.c	mm/hmm: fix memremap.h, move dev_page_fault_t callback to hmm	2018-12-28 12:11:52 -08:00
module_signing.c	modsign: use all trusted keys to verify module signature	2018-11-07 14:41:41 +01:00
module-internal.h	modsign: log module name in the event of an error	2018-07-02 11:36:17 +02:00
module.c	Driver core patches for 4.21-rc1	2018-12-28 20:44:29 -08:00
notifier.c
nsproxy.c
padata.c	padata: clean an indentation issue, remove extraneous space	2018-11-16 14:11:04 +08:00
panic.c	Printk changes for 4.21	2018-12-27 11:24:43 -08:00
params.c
pid_namespace.c	signal: Use group_send_sig_info to kill all processes in a pid namespace	2018-09-16 16:08:25 +02:00
pid.c	Fix failure path in alloc_pid()	2018-12-28 12:42:30 -08:00
profile.c	mm: remove include/linux/bootmem.h	2018-10-31 08:54:16 -07:00
ptrace.c	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
range.c
reboot.c	kernel/reboot.c: export pm_power_off_prepare	2018-09-11 16:13:24 +01:00
relay.c	kernel/relay.c: change return type to vm_fault_t	2018-06-15 07:55:24 +09:00
resource.c	kernel, resource: check for IORESOURCE_SYSRAM in release_mem_region_adjustable	2018-12-28 12:11:49 -08:00
rseq.c	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
seccomp.c	seccomp: fix poor type promotion	2018-12-13 16:49:01 -08:00
signal.c	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
smp.c	smp,cpumask: introduce on_each_cpu_cond_mask	2018-10-09 16:51:11 +02:00
smpboot.c	smpboot: Remove cpumask from the API	2018-07-03 09:20:44 +02:00
smpboot.h
softirq.c	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-10-25 11:43:47 -07:00
stackleak.c	stackleak: Mark stackleak_track_stack() as notrace	2018-12-05 19:31:44 -08:00
stacktrace.c
stop_machine.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-08-13 11:25:07 -07:00
sys_ni.c	y2038: socket: Add compat_sys_recvmmsg_time64	2018-12-18 16:13:04 +01:00
sys.c	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
sysctl_binary.c
sysctl.c	mm: reclaim small amounts of memory when an external fragmentation event occurs	2018-12-28 12:11:48 -08:00
task_work.c
taskstats.c
test_kprobes.c	kprobes: Remove jprobe API implementation	2018-06-21 12:33:05 +02:00
torture.c	torture: Remove unnecessary "ret" variables	2018-12-01 12:45:35 -08:00
tracepoint.c	tracing: Replace synchronize_sched() and call_rcu_sched()	2018-11-27 09:21:41 -08:00
tsacct.c
ucount.c
uid16.c
uid16.h
umh.c	umh: Add command line to user mode helpers	2018-10-22 19:37:36 -07:00
up.c	smp,cpumask: introduce on_each_cpu_cond_mask	2018-10-09 16:51:11 +02:00
user_namespace.c	userns: also map extents in the reverse map to kernel IDs	2018-11-07 23:51:16 -06:00
user-return-notifier.c
user.c	userns: use irqsave variant of refcount_dec_and_lock()	2018-08-22 10:52:47 -07:00
utsname_sysctl.c	sys: don't hold uts_sem while accessing userspace memory	2018-08-11 02:05:53 -05:00
utsname.c
watchdog_hld.c	watchdog: Mark watchdog touch functions as notrace	2018-08-30 12:56:40 +02:00
watchdog.c	watchdog: Mark watchdog touch functions as notrace	2018-08-30 12:56:40 +02:00
workqueue_internal.h
workqueue.c	workqueue: Replace call_rcu_sched() with call_rcu()	2018-11-27 09:21:44 -08:00