Elliot Berman 14c4c8e415 cfi: Use rcu_read_{un}lock_sched_notrace ... If rcu_read_lock_sched tracing is enabled, the tracing subsystem can perform a jump which needs to be checked by CFI. For example, stm_ftrace source is enabled as a module and hooks into enabled ftrace events. This can cause an recursive loop where find_shadow_check_fn -> rcu_read_lock_sched -> (call to stm_ftrace generates cfi slowpath) -> find_shadow_check_fn -> rcu_read_lock_sched -> ... To avoid the recursion, either the ftrace codes needs to be marked with __no_cfi or CFI should not trace. Use the "_notrace" in CFI to avoid tracing so that CFI can guard ftrace. Signed-off-by: Elliot Berman <quic_eberman@quicinc.com> Reviewed-by: Sami Tolvanen <samitolvanen@google.com> Cc: stable@vger.kernel.org Fixes: cf68fffb66 ("add support for Clang CFI") Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20210811155914.19550-1-quic_eberman@quicinc.com		2021-08-11 13:11:12 -07:00
..
bpf	bpf: Fix leakage due to insufficient speculative store bypass mitigation	2021-07-29 00:27:52 +02:00
cgroup	cgroup1: fix leaked context root causing sporadic NULL deref in LTP	2021-07-21 06:39:20 -10:00
configs
debug	kernel: debug: Fix unreachable code in gdb_serial_stub()	2021-07-12 11:03:35 -05:00
dma	dma-mapping: handle vmalloc addresses in dma_common_{mmap,get_sgtable}	2021-07-16 11:30:26 +02:00
entry	tick/nohz: Only check for RCU deferred wakeup on user/guest entry when needed	2021-05-31 10:14:49 +02:00
events	perf: Refactor permissions check into perf_check_permission()	2021-07-16 18:46:38 +02:00
gcov	Kconfig: Introduce ARCH_WANTS_NO_INSTR and CC_HAS_NO_PROFILE_FN_ATTR	2021-06-22 11:07:18 -07:00
irq	irqchip fixes for 5.14, take #1	2021-07-09 15:35:13 +02:00
kcsan	Merge branch 'kcsan.2021.05.18a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu	2021-07-04 12:29:16 -07:00
livepatch
locking	Locking fixes:	2021-07-11 11:06:09 -07:00
power	PM: hibernate: disable when there are active secretmem users	2021-07-08 11:48:21 -07:00
printk	printk changes for 5.14	2021-06-29 12:07:18 -07:00
rcu	rcu: Fix pr_info() formats and values in show_rcu_gp_kthreads()	2021-07-06 15:53:12 -07:00
sched	sched/rt: Fix double enqueue caused by rt_effective_prio	2021-08-04 15:16:31 +02:00
time	timers: Move clearing of base::timer_running under base:: Lock	2021-07-27 20:57:44 +02:00
trace	tracing: Quiet smp_processor_id() use in preemptable warning in hwlat	2021-08-05 09:27:31 -04:00
.gitignore
acct.c
async.c
audit.c
audit.h	audit: remove trailing spaces and tabs	2021-06-10 20:59:05 -04:00
audit_fsnotify.c
audit_tree.c	audit: Use list_move instead of list_del/list_add	2021-06-08 22:18:35 -04:00
audit_watch.c
auditfilter.c
auditsc.c	audit: remove trailing spaces and tabs	2021-06-10 20:59:05 -04:00
backtracetest.c
bounds.c
capability.c
cfi.c	cfi: Use rcu_read_{un}lock_sched_notrace	2021-08-11 13:11:12 -07:00
compat.c
configs.c
context_tracking.c
cpu.c	A fix for the CPU hotplug and cpusets interaction:	2021-06-29 12:23:02 -07:00
cpu_pm.c
crash_core.c	kdump: use vmlinux_build_id to simplify	2021-07-08 11:48:22 -07:00
crash_dump.c
cred.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2021-06-28 20:39:26 -07:00
delayacct.c	delayacct: Add sysctl to enable at runtime	2021-05-12 11:43:25 +02:00
dma.c
exec_domain.c
exit.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2021-06-28 20:39:26 -07:00
extable.c
fail_function.c
fork.c	Merge branch 'akpm' (patches from Andrew)	2021-06-29 17:29:11 -07:00
freezer.c	sched: Add get_current_state()	2021-06-18 11:43:08 +02:00
futex.c	Locking changes for this cycle:	2021-06-28 11:45:29 -07:00
gen_kheaders.sh	kbuild: clean up ${quiet} checks in shell scripts	2021-05-27 04:01:50 +09:00
groups.c
hung_task.c	Merge branch 'akpm' (patches from Andrew)	2021-07-02 12:08:10 -07:00
iomem.c
irq_work.c	irq_work: Make irq_work_queue() NMI-safe again	2021-06-10 10:00:08 +02:00
jump_label.c	jump_label: Fix jump_label_text_reserved() vs __init	2021-07-05 10:46:20 +02:00
kallsyms.c	module: add printk formats to add module build ID to stacktraces	2021-07-08 11:48:22 -07:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt	sched/core: Disable CONFIG_SCHED_CORE by default	2021-06-28 22:43:05 +02:00
kcov.c
kexec.c
kexec_core.c	kernel.h: split out panic and oops helpers	2021-07-01 11:06:04 -07:00
kexec_elf.c
kexec_file.c
kexec_internal.h
kheaders.c
kmod.c
kprobes.c	Locking fixes:	2021-07-11 11:06:09 -07:00
ksysfs.c
kthread.c	Merge branch 'akpm' (patches from Andrew)	2021-06-29 17:29:11 -07:00
latencytop.c
Makefile
module-internal.h
module.c	module: add printk formats to add module build ID to stacktraces	2021-07-08 11:48:22 -07:00
module_signature.c
module_signing.c
notifier.c
nsproxy.c
padata.c
panic.c	kernel.h: split out panic and oops helpers	2021-07-01 11:06:04 -07:00
params.c
pid.c
pid_namespace.c
profile.c
ptrace.c	sched: Change task_struct::state	2021-06-18 11:43:09 +02:00
range.c
reboot.c	reboot: Add hardware protection power-off	2021-06-21 13:08:36 +01:00
regset.c
relay.c
resource.c	kernel/resource: fix return code check in __request_free_mem_region	2021-05-14 19:41:32 -07:00
resource_kunit.c
rseq.c
scftorture.c	scftorture: Avoid false-positive warnings in scftorture_invoker()	2021-07-06 12:37:55 -07:00
scs.c
seccomp.c	seccomp: Support atomic "addfd + send reply"	2021-06-28 12:49:52 -07:00
signal.c	Fix UCOUNT_RLIMIT_SIGPENDING counter leak	2021-07-08 11:43:24 -07:00
smp.c
smpboot.c	smpboot: fix duplicate and misplaced inlining directive	2021-07-25 11:06:37 -07:00
smpboot.h
softirq.c	sched: Introduce task_is_running()	2021-06-18 11:43:07 +02:00
stackleak.c
stacktrace.c
static_call.c	static_call: Fix static_call_text_reserved() vs __init	2021-07-05 10:46:33 +02:00
stop_machine.c
sys.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2021-06-28 20:39:26 -07:00
sys_ni.c	mm: introduce memfd_secret system call to create "secret" memory areas	2021-07-08 11:48:21 -07:00
sysctl-test.c	kernel/sysctl-test: Remove some casts which are no-longer required	2021-06-23 16:41:24 -06:00
sysctl.c	Merge branch 'akpm' (patches from Andrew)	2021-07-02 12:08:10 -07:00
task_work.c
taskstats.c
test_kprobes.c
torture.c
tracepoint.c	tracepoint: Use rcu get state and cond sync for static call updates	2021-08-06 10:54:41 -04:00
tsacct.c
ucount.c	ucounts: Fix race condition between alloc_ucounts and put_ucounts	2021-07-28 12:31:51 -05:00
uid16.c
uid16.h
umh.c
up.c
user-return-notifier.c
user.c
user_namespace.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2021-06-28 20:39:26 -07:00
usermode_driver.c	Merge branch 'work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2021-07-03 11:41:14 -07:00
utsname.c
utsname_sysctl.c
watch_queue.c
watchdog.c	kernel: watchdog: modify the explanation related to watchdog thread	2021-06-29 10:53:46 -07:00
watchdog_hld.c
workqueue.c	workqueue: fix UAF in pwq_unbound_release_workfn()	2021-07-21 06:42:31 -10:00
workqueue_internal.h