Tetsuo Handa a47c3c4876 printk: fix possible reuse of va_list variable ... commit 988a35f8da upstream. I noticed that there is a possibility that printk_safe_log_store() causes kernel oops because "args" parameter is passed to vsnprintf() again when atomic_cmpxchg() detected that we raced. Fix this by using va_copy(). Link: http://lkml.kernel.org/r/201805112002.GIF21216.OFVHFOMLJtQFSO@I-love.SAKURA.ne.jp Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: dvyukov@google.com Cc: syzkaller@googlegroups.com Cc: fengguang.wu@intel.com Cc: linux-kernel@vger.kernel.org Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Fixes: 42a0bb3f71 ("printk/nmi: generic solution for safe printk in NMI") Cc: 4.7+ <stable@vger.kernel.org> # v4.7+ Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Signed-off-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-07-03 11:24:49 +02:00
..
bpf	bpf: sockmap, fix leaking maps with attached but not detached progs	2018-04-26 11:02:17 +02:00
cgroup	cgroup: fix rule checking for threaded mode switching	2018-03-28 18:24:37 +02:00
configs	…
debug	kdb: make "mdr" command repeat	2018-05-30 07:52:41 +02:00
events	perf/core: Fix perf_output_read_group()	2018-05-30 07:52:34 +02:00
gcov	…
irq	genirq: Guard handle_bad_irq log messages	2018-03-03 10:24:31 +01:00
livepatch	…
locking	locking/percpu-rwsem: Annotate rwsem ownership transfer by setting RWSEM_OWNER_UNKNOWN	2018-06-21 04:03:00 +09:00
power	x86/power: Fix swsusp_arch_resume prototype	2018-04-26 11:02:16 +02:00
printk	printk: fix possible reuse of va_list variable	2018-07-03 11:24:49 +02:00
rcu	rcu: Call touch_nmi_watchdog() while printing stall warnings	2018-05-30 07:52:39 +02:00
sched	sched/deadline: Make the grub_reclaim() function static	2018-06-21 04:03:01 +09:00
time	tick/broadcast: Use for_each_cpu() specially on UP kernels	2018-05-22 18:54:00 +02:00
trace	tracing: Make the snapshot trigger work with instances	2018-06-05 11:41:56 +02:00
.gitignore	…
Kconfig.freezer	…
Kconfig.hz	…
Kconfig.locks	…
Kconfig.preempt	…
Makefile	…
acct.c	kernel/acct.c: fix the acct->needcheck check in check_free_space()	2018-01-10 09:31:17 +01:00
async.c	kernel/async.c: revert "async: simplify lowest_in_progress()"	2018-02-16 20:23:05 +01:00
audit.c	audit: return on memory error to avoid null pointer dereference	2018-05-30 07:52:39 +02:00
audit.h	…
audit_fsnotify.c	…
audit_tree.c	…
audit_watch.c	…
auditfilter.c	…
auditsc.c	…
backtracetest.c	…
bounds.c	…
capability.c	…
compat.c	compat: fix 4-byte infoleak via uninitialized struct field	2018-05-16 10:10:26 +02:00
configs.c	…
context_tracking.c	…
cpu.c	timers: Reinitialize per cpu bases on hotplug	2018-01-02 20:31:15 +01:00
cpu_pm.c	…
crash_core.c	kdump: write correct address of mem_section into vmcoreinfo	2018-01-17 09:45:27 +01:00
crash_dump.c	…
cred.c	…
delayacct.c	delayacct: Account blkio completion on the correct task	2018-01-23 19:58:13 +01:00
dma.c	…
elfcore.c	…
exec_domain.c	…
exit.c	kernel/exit.c: export abort() to modules	2018-02-13 10:19:49 +01:00
extable.c	…
fork.c	kmemcheck: stop using GFP_NOTRACK and SLAB_NOTRACK	2018-02-22 15:42:23 +01:00
freezer.c	…
futex.c	futex: Fix OWNER_DEAD fixup	2018-02-03 17:38:47 +01:00
futex_compat.c	…
groups.c	…
hung_task.c	…
irq_work.c	…
jump_label.c	…
kallsyms.c	…
kcmp.c	…
kcov.c	kcov: detect double association with a single task	2018-02-25 11:07:50 +01:00
kexec.c	…
kexec_core.c	…
kexec_file.c	…
kexec_internal.h	…
kmod.c	…
kprobes.c	…
ksysfs.c	…
kthread.c	kthread, sched/wait: Fix kthread_parkme() wait-loop	2018-06-21 04:02:53 +09:00
latencytop.c	…
memremap.c	mm: Fix memory size alignment in devm_memremap_pages_release()	2018-02-22 15:42:27 +01:00
module-internal.h	…
module.c	init: fix false positives in W+X checking	2018-06-21 04:02:57 +09:00
module_signing.c	…
notifier.c	…
nsproxy.c	…
padata.c	…
panic.c	…
params.c	…
pid.c	…
pid_namespace.c	…
profile.c	…
ptrace.c	…
range.c	…
reboot.c	…
relay.c	kernel/relay.c: limit kmalloc size to KMALLOC_MAX_SIZE	2018-05-30 07:52:00 +02:00
resource.c	resource: fix integer overflow at reallocation	2018-04-24 09:36:22 +02:00
seccomp.c	seccomp: Move speculation migitation control to arch code	2018-05-22 18:54:04 +02:00
signal.c	sched/core: Introduce set_special_state()	2018-06-21 04:02:54 +09:00
smp.c	…
smpboot.c	…
smpboot.h	…
softirq.c	kmemcheck: rip it out	2018-02-22 15:42:24 +01:00
stacktrace.c	…
stop_machine.c	stop_machine, sched: Fix migrate_swap() vs. active_balance() deadlock	2018-06-21 04:02:53 +09:00
sys.c	kernel/sys.c: fix potential Spectre v1 issue	2018-05-30 07:51:50 +02:00
sys_ni.c	…
sysctl.c	kmemcheck: rip it out	2018-02-22 15:42:24 +01:00
sysctl_binary.c	…
task_work.c	…
taskstats.c	…
test_kprobes.c	…
torture.c	…
tracepoint.c	tracepoint: Do not warn on ENOMEM	2018-05-09 09:51:50 +02:00
tsacct.c	…
ucount.c	…
uid16.c	…
umh.c	…
up.c	…
user-return-notifier.c	…
user.c	…
user_namespace.c	…
utsname.c	…
utsname_sysctl.c	…
watchdog.c	…
watchdog_hld.c	…
workqueue.c	workqueue: use put_device() instead of kfree()	2018-05-30 07:52:14 +02:00
workqueue_internal.h	…