Thomas Gleixner 19b558db12 posix-timers: Protect posix clock array access against speculation ... The clockid argument of clockid_to_kclock() comes straight from user space via various syscalls and is used as index into the posix_clocks array. Protect it against spectre v1 array out of bounds speculation. Remove the redundant check for !posix_clock[id] as this is another source for speculation and does not provide any advantage over the return posix_clock[id] path which returns NULL in that case anyway. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Dan Williams <dan.j.williams@intel.com> Cc: Rasmus Villemoes <rasmus.villemoes@prevas.dk> Cc: Greg KH <gregkh@linuxfoundation.org> Cc: stable@vger.kernel.org Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: David Woodhouse <dwmw@amazon.co.uk> Link: https://lkml.kernel.org/r/alpine.DEB.2.21.1802151718320.1296@nanos.tec.linutronix.de		2018-03-22 12:29:27 +01:00
..
bpf	bpf: allow xadd only on aligned memory	2018-02-23 14:33:39 -08:00
cgroup	cgroup: fix rule checking for threaded mode switching	2018-02-21 11:39:22 -08:00
configs	KVM changes for 4.16	2018-02-10 13:16:35 -08:00
debug	signal: Simplify and fix kdb_send_sig	2018-01-03 18:01:08 -06:00
events	perf/core: Fix ctx_event_type in ctx_resched()	2018-03-09 08:03:02 +01:00
gcov
irq	genirq/matrix: Handle CPU offlining proper	2018-02-22 22:05:43 +01:00
livepatch	Merge branch 'for-4.16/remove-immediate' into for-linus	2018-01-31 16:36:38 +01:00
locking	rtmutex: Make rt_mutex_futex_unlock() safe for irq-off callsites	2018-03-09 11:06:16 +01:00
power	x86/power: Fix swsusp_arch_resume prototype	2018-02-02 23:33:50 +01:00
printk	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk	2018-03-01 10:06:39 -08:00
rcu	SCSI misc on 20180131	2018-01-31 11:23:28 -08:00
sched	Merge branch 'for-4.16-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2018-03-19 15:39:02 -07:00
time	posix-timers: Protect posix clock array access against speculation	2018-03-22 12:29:27 +01:00
trace	bpf: fix bpf_prog_array_copy_to_user warning from perf event prog query	2018-02-14 08:59:37 -08:00
.gitignore
acct.c	kernel/acct.c: fix the acct->needcheck check in check_free_space()	2018-01-04 16:45:09 -08:00
async.c	kernel/async.c: revert "async: simplify lowest_in_progress()"	2018-02-06 18:32:44 -08:00
audit_fsnotify.c
audit_tree.c
audit_watch.c
audit.c
audit.h
auditfilter.c
auditsc.c
backtracetest.c
bounds.c
capability.c
compat.c	signals: Move put_compat_sigset to compat.h to silence hardened usercopy	2018-03-02 21:31:55 +00:00
configs.c
context_tracking.c
cpu_pm.c
cpu.c	Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-12-31 12:30:34 -08:00
crash_core.c	kdump: write correct address of mem_section into vmcoreinfo	2018-01-13 10:42:48 -08:00
crash_dump.c
cred.c
delayacct.c	delayacct: Account blkio completion on the correct task	2018-01-16 03:29:36 +01:00
dma.c
elfcore.c
exec_domain.c
exit.c	kernel/exit.c: export abort() to modules	2018-01-04 16:45:09 -08:00
extable.c	extable: Make init_kernel_text() global	2018-02-21 16:54:06 +01:00
fail_function.c	error-injection: Support fault injection framework	2018-01-12 17:33:38 -08:00
fork.c	include/linux/sched/mm.h: re-inline mmdrop()	2018-02-21 15:35:42 -08:00
freezer.c
futex_compat.c
futex.c	pids: introduce find_get_task_by_vpid() helper	2018-02-06 18:32:46 -08:00
groups.c
hung_task.c
irq_work.c	irq/work: Improve the flag definitions	2018-01-08 19:43:15 +01:00
jump_label.c	jump_label: Fix sparc64 warning	2018-03-14 16:35:26 +01:00
kallsyms.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk	2018-02-01 13:36:15 -08:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c	kcov: detect double association with a single task	2018-02-06 18:32:46 -08:00
kexec_core.c
kexec_file.c
kexec_internal.h
kexec.c
kmod.c
kprobes.c	kprobes: Propagate error from disarm_kprobe_ftrace()	2018-02-16 09:12:58 +01:00
ksysfs.c
kthread.c
latencytop.c
Makefile	error-injection: Support fault injection framework	2018-01-12 17:33:38 -08:00
memremap.c	memremap: fix softlockup reports at teardown	2018-03-02 19:34:50 -08:00
module_signing.c
module-internal.h
module.c	Modules updates for v4.16	2018-02-07 14:29:34 -08:00
notifier.c
nsproxy.c
padata.c	padata: add SPDX identifier	2018-01-05 18:43:00 +11:00
panic.c	bug: use %pB in BUG and stack protector failure	2018-03-09 16:40:01 -08:00
params.c
pid_namespace.c
pid.c	pids: introduce find_get_task_by_vpid() helper	2018-02-06 18:32:46 -08:00
profile.c
ptrace.c	pids: introduce find_get_task_by_vpid() helper	2018-02-06 18:32:46 -08:00
range.c
reboot.c
relay.c	kernel/relay.c: limit kmalloc size to KMALLOC_MAX_SIZE	2018-02-21 15:35:43 -08:00
resource.c	Merge branch 'akpm' (patches from Andrew)	2018-02-06 22:15:42 -08:00
seccomp.c	- Fix seccomp GET_METADATA to deal with field sizes correctly (Tycho Andersen)	2018-02-22 10:50:24 -08:00
signal.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching	2018-01-31 13:02:18 -08:00
smp.c
smpboot.c
smpboot.h
softirq.c
stacktrace.c
stop_machine.c
sys_ni.c
sys.c
sysctl_binary.c
sysctl.c	pipe: reject F_SETPIPE_SZ with size over UINT_MAX	2018-02-06 18:32:47 -08:00
task_work.c
taskstats.c	pids: introduce find_get_task_by_vpid() helper	2018-02-06 18:32:46 -08:00
test_kprobes.c
torture.c
tracepoint.c
tsacct.c
ucount.c
uid16.c
umh.c
up.c
user_namespace.c
user-return-notifier.c
user.c	efivarfs: Limit the rate for non-root to read files	2018-02-22 10:21:02 -08:00
utsname_sysctl.c
utsname.c
watchdog_hld.c
watchdog.c
workqueue_internal.h
workqueue.c	workqueue: remove unused cancel_work()	2018-03-13 13:37:42 -07:00