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5da13ab8b0dcaa984c45ae43edf5a4d148603d42
linux/kernel
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Masami Hiramatsu 5da13ab8b0 perf/core: Fix perf_kprobe_init() 
Fix error handling in perf_kprobe_init():

	==================================================================
	BUG: KASAN: slab-out-of-bounds in strlen+0x8e/0xa0 lib/string.c:482
	Read of size 1 at addr ffff88003f9cc5c0 by task syz-executor2/23095

	CPU: 0 PID: 23095 Comm: syz-executor2 Not tainted 4.16.0+ #24
	Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
	Call Trace:
	 __dump_stack lib/dump_stack.c:77 [inline]
	 dump_stack+0xca/0x13e lib/dump_stack.c:113
	 print_address_description+0x6e/0x2c0 mm/kasan/report.c:256
	 kasan_report_error mm/kasan/report.c:354 [inline]
	 kasan_report+0x256/0x380 mm/kasan/report.c:412
	 strlen+0x8e/0xa0 lib/string.c:482
	 kstrdup+0x21/0x70 mm/util.c:55
	 alloc_trace_kprobe+0xc8/0x930 kernel/trace/trace_kprobe.c:325
	 create_local_trace_kprobe+0x4f/0x3a0 kernel/trace/trace_kprobe.c:1438
	 perf_kprobe_init+0x149/0x1f0 kernel/trace/trace_event_perf.c:264
	 perf_kprobe_event_init+0xa8/0x120 kernel/events/core.c:8407
	 perf_try_init_event+0xcb/0x2a0 kernel/events/core.c:9719
	 perf_init_event kernel/events/core.c:9750 [inline]
	 perf_event_alloc+0x1367/0x1e20 kernel/events/core.c:10022
	 SYSC_perf_event_open+0x242/0x2330 kernel/events/core.c:10477
	 do_syscall_64+0x198/0x640 arch/x86/entry/common.c:287
	 entry_SYSCALL_64_after_hwframe+0x42/0xb7

Reported-by: 范龙飞 <long7573@126.com>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: e12f03d703 ("perf/core: Implement the 'perf_kprobe' PMU")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-04-10 07:33:10 +02:00
..
bpf
bpf: skip unnecessary capability check
2018-03-20 23:50:39 +01:00
cgroup
cgroup: fix rule checking for threaded mode switching
2018-02-21 11:39:22 -08:00
configs
Merge tag 'kvm-4.16-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm
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 use-after-free in uprobe_perf_close()
2018-04-09 18:15:58 +02:00
gcov
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
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
locking/rwsem: Add DEBUG_RWSEMS to look for lock/unlock mismatches
2018-03-31 07:30:50 +02:00
power
fs: add ksys_sync() helper; remove in-kernel calls to sys_sync()
2018-04-02 20:16:05 +02:00
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
Merge branches 'fixes.2018.02.23a', 'srcu.2018.02.20a' and 'torture.2018.02.20a' into HEAD
2018-02-23 15:15:41 -08:00
sched
Merge branch 'syscalls-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux
2018-04-02 21:22:12 -07:00
time
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-04-02 11:49:41 -07:00
trace
perf/core: Fix perf_kprobe_init()
2018-04-10 07:33:10 +02:00
.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
Merge branch 'fsnotify' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
2017-11-14 14:08:20 -08:00
audit_watch.c
Merge tag 'audit-pr-20170816' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
2017-08-16 16:48:34 -07:00
audit.c
Audit: remove unused audit_log_secctx function
2017-11-10 16:08:47 -05:00
audit.h
Merge tag 'audit-pr-20171113' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
2017-11-15 13:28:48 -08:00
auditfilter.c
audit: filter PATH records keyed on filesystem magic
2017-11-10 16:08:56 -05:00
auditsc.c
Merge tag 'audit-pr-20171113' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
2017-11-15 13:28:48 -08:00
backtracetest.c
…
bounds.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
capability.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compat.c
mm: add kernel_move_pages() helper, move compat syscall to mm/migrate.c
2018-04-02 20:15:32 +02:00
configs.c
…
context_tracking.c
…
cpu_pm.c
PM / CPU: replace raw_notifier with atomic_notifier
2017-07-31 13:09:49 +02:00
cpu.c
cpu/hotplug: Fix unused function warning
2018-03-15 20:34:40 +01:00
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
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
elfcore.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
exec_domain.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
exit.c
kernel: use kernel_wait4() instead of sys_wait4()
2018-04-02 20:14:51 +02:00
extable.c
extable: Make init_kernel_text() global
2018-02-21 16:54:06 +01:00
fail_function.c
error-injection: Fix to prohibit jump optimization
2018-03-12 16:16:00 +01:00
fork.c
kernel: add ksys_unshare() helper; remove in-kernel calls to sys_unshare()
2018-04-02 20:16:06 +02:00
freezer.c
…
futex_compat.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
futex.c
pids: introduce find_get_task_by_vpid() helper
2018-02-06 18:32:46 -08:00
groups.c
kernel: make groups_sort calling a responsibility group_info allocators
2017-12-14 16:00:49 -08:00
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: Disable jump labels in __exit code
2018-03-20 08:57:17 +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
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
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
x86/mm, kexec: Allow kexec to be used with SME
2017-07-18 11:38:04 +02:00
kexec_file.c
resource: Provide resource struct in resource walk callback
2017-11-07 15:35:57 +01:00
kexec_internal.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
kexec.c
kexec: call do_kexec_load() in compat syscall directly
2018-04-02 20:15:01 +02:00
kmod.c
kmod: move #ifdef CONFIG_MODULES wrapper to Makefile
2017-09-08 18:26:51 -07:00
kprobes.c
kprobes: Propagate error from disarm_kprobe_ftrace()
2018-02-16 09:12:58 +01:00
ksysfs.c
…
kthread.c
treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts
2017-11-21 16:35:54 -08:00
latencytop.c
…
Makefile
error-injection: Support fault injection framework
2018-01-12 17:33:38 -08:00
memremap.c
kernel/memremap: Remove stale devres_free() call
2018-03-06 10:58:54 -08:00
module_signing.c
…
module-internal.h
…
module.c
Merge tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
2018-04-02 20:20:12 -07:00
notifier.c
…
nsproxy.c
…
padata.c
padata: add SPDX identifier
2018-01-05 18:43:00 +11:00
panic.c
Merge branch 'core-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-04-02 09:08:26 -07:00
params.c
kernel/params.c: improve STANDARD_PARAM_DEF readability
2017-10-03 17:54:26 -07:00
pid_namespace.c
kernel: use kernel_wait4() instead of sys_wait4()
2018-04-02 20:14:51 +02:00
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
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
reboot.c
kernel/reboot.c: add devm_register_reboot_notifier()
2017-11-17 16:10:04 -08:00
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
Merge tag 'seccomp-v4.16-rc3' of https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux into fixes-v4.16-rc3
2018-02-22 10:50:24 -08:00
signal.c
kernel: add do_compat_sigaltstack() helper; remove in-kernel call to compat syscall
2018-04-02 20:15:29 +02:00
smp.c
smp/core: Use lockdep to assert IRQs are disabled/enabled
2017-11-08 11:13:50 +01:00
smpboot.c
watchdog/core, powerpc: Lock cpus across reconfiguration
2017-10-04 10:53:54 +02:00
smpboot.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
softirq.c
softirq: Eliminate cond_resched_rcu_qs() in favor of cond_resched()
2017-12-04 10:28:58 -08:00
stacktrace.c
…
stop_machine.c
…
sys_ni.c
kernel/sys_ni: remove {sys_,sys_compat} from cond_syscall definitions
2018-04-02 20:16:20 +02:00
sys.c
kernel: add ksys_setsid() helper; remove in-kernel call to sys_setsid()
2018-04-02 20:16:06 +02:00
sysctl_binary.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
sysctl.c
pipe: reject F_SETPIPE_SZ with size over UINT_MAX
2018-02-06 18:32:47 -08:00
task_work.c
locking/barriers: Convert users of lockless_dereference() to READ_ONCE()
2017-12-17 13:57:15 +01:00
taskstats.c
pids: introduce find_get_task_by_vpid() helper
2018-02-06 18:32:46 -08:00
test_kprobes.c
kprobes: Disable the jprobes test code
2017-10-20 11:02:54 +02:00
torture.c
torture: Save a line in stutter_wait(): while -> for
2017-12-11 09:18:30 -08:00
tracepoint.c
tracepoint: Remove smp_read_barrier_depends() from comment
2017-12-04 10:52:56 -08:00
tsacct.c
…
ucount.c
…
uid16.c
fs: add do_fchownat(), ksys_fchown() helpers and ksys_{,l}chown() wrappers
2018-04-02 20:15:59 +02:00
uid16.h
kernel: provide ksys_*() wrappers for syscalls called by kernel/uid16.c
2018-04-02 20:15:30 +02:00
umh.c
kernel: use kernel_wait4() instead of sys_wait4()
2018-04-02 20:14:51 +02:00
up.c
smp: Avoid using two cache lines for struct call_single_data
2017-08-29 15:14:38 +02:00
user_namespace.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2017-11-16 12:20:15 -08:00
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
Merge branch 'linus' into core/urgent, to pick up dependent commits
2017-11-04 08:53:04 +01:00
watchdog.c
Merge branch 'linus' into sched/core, to pick up fixes
2017-11-08 10:17:15 +01:00
workqueue_internal.h
Merge branch 'for-4.14-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
2017-11-06 12:26:49 -08:00
workqueue.c
Merge branch 'linus' into sched/core, to pick up fixes
2018-03-20 08:08:02 +01:00