xt_recent: hitcount (1056964608) is larger than allowed maximum (255)
======================================================
WARNING: possible circular locking dependency detected
4.14.302-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.2/10110 is trying to acquire lock:
(event_mutex){+.+.}, at: [<ffffffff815b2853>] perf_trace_destroy+0x23/0xf0 kernel/trace/trace_event_perf.c:234
but task is already holding lock:
(&event->child_mutex){+.+.}, at: [<ffffffff8165aa38>] perf_event_release_kernel+0x208/0x8a0 kernel/events/core.c:4405
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #5 (&event->child_mutex){+.+.}:
__mutex_lock_common kernel/locking/mutex.c:756 [inline]
__mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893
perf_event_for_each_child+0x82/0x140 kernel/events/core.c:4690
_perf_ioctl+0x471/0x1a60 kernel/events/core.c:4877
perf_ioctl+0x55/0x80 kernel/events/core.c:4889
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:500 [inline]
do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684
SYSC_ioctl fs/ioctl.c:701 [inline]
SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x5e/0xd3
-> #4 (&cpuctx_mutex){+.+.}:
__mutex_lock_common kernel/locking/mutex.c:756 [inline]
__mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893
perf_event_init_cpu+0xb7/0x170 kernel/events/core.c:11291
perf_event_init+0x2cc/0x308 kernel/events/core.c:11338
start_kernel+0x45d/0x763 init/main.c:624
secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:240
-> #3 (pmus_lock){+.+.}:
__mutex_lock_common kernel/locking/mutex.c:756 [inline]
__mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893
perf_event_init_cpu+0x2c/0x170 kernel/events/core.c:11285
cpuhp_invoke_callback+0x1e6/0x1a80 kernel/cpu.c:186
cpuhp_up_callbacks kernel/cpu.c:574 [inline]
_cpu_up+0x21e/0x520 kernel/cpu.c:1193
do_cpu_up+0x9a/0x160 kernel/cpu.c:1229
smp_init+0x197/0x1ac kernel/smp.c:578
kernel_init_freeable+0x406/0x626 init/main.c:1074
kernel_init+0xd/0x15d init/main.c:1006
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:406
-> #2 (cpu_hotplug_lock.rw_sem){++++}:
percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline]
percpu_down_read include/linux/percpu-rwsem.h:59 [inline]
cpus_read_lock+0x39/0xc0 kernel/cpu.c:297
static_key_slow_inc+0xe/0x20 kernel/jump_label.c:123
tracepoint_add_func+0x747/0xa40 kernel/tracepoint.c:269
tracepoint_probe_register_prio kernel/tracepoint.c:331 [inline]
tracepoint_probe_register+0x8c/0xc0 kernel/tracepoint.c:352
trace_event_reg+0x272/0x330 kernel/trace/trace_events.c:305
perf_trace_event_reg kernel/trace/trace_event_perf.c:122 [inline]
perf_trace_event_init kernel/trace/trace_event_perf.c:197 [inline]
perf_trace_init+0x424/0xa30 kernel/trace/trace_event_perf.c:221
perf_tp_event_init+0x79/0xf0 kernel/events/core.c:8145
perf_try_init_event+0x15b/0x1f0 kernel/events/core.c:9379
perf_init_event kernel/events/core.c:9417 [inline]
perf_event_alloc.part.0+0xe2d/0x2640 kernel/events/core.c:9677
perf_event_alloc kernel/events/core.c:10047 [inline]
SYSC_perf_event_open kernel/events/core.c:10151 [inline]
SyS_perf_event_open+0x683/0x2530 kernel/events/core.c:10037
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x5e/0xd3
-> #1 (tracepoints_mutex){+.+.}:
__mutex_lock_common kernel/locking/mutex.c:756 [inline]
__mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893
tracepoint_probe_register_prio kernel/tracepoint.c:327 [inline]
tracepoint_probe_register+0x68/0xc0 kernel/tracepoint.c:352
trace_event_reg+0x272/0x330 kernel/trace/trace_events.c:305
perf_trace_event_reg kernel/trace/trace_event_perf.c:122 [inline]
perf_trace_event_init kernel/trace/trace_event_perf.c:197 [inline]
perf_trace_init+0x424/0xa30 kernel/trace/trace_event_perf.c:221
perf_tp_event_init+0x79/0xf0 kernel/events/core.c:8145
perf_try_init_event+0x15b/0x1f0 kernel/events/core.c:9379
perf_init_event kernel/events/core.c:9417 [inline]
perf_event_alloc.part.0+0xe2d/0x2640 kernel/events/core.c:9677
perf_event_alloc kernel/events/core.c:10047 [inline]
SYSC_perf_event_open kernel/events/core.c:10151 [inline]
SyS_perf_event_open+0x683/0x2530 kernel/events/core.c:10037
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x5e/0xd3
-> #0 (event_mutex){+.+.}:
lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
__mutex_lock_common kernel/locking/mutex.c:756 [inline]
__mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893
perf_trace_destroy+0x23/0xf0 kernel/trace/trace_event_perf.c:234
_free_event+0x321/0xe20 kernel/events/core.c:4246
free_event+0x32/0x40 kernel/events/core.c:4273
perf_event_release_kernel+0x368/0x8a0 kernel/events/core.c:4417
perf_release+0x33/0x40 kernel/events/core.c:4443
__fput+0x25f/0x7a0 fs/file_table.c:210
task_work_run+0x11f/0x190 kernel/task_work.c:113
tracehook_notify_resume include/linux/tracehook.h:191 [inline]
exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
entry_SYSCALL_64_after_hwframe+0x5e/0xd3
other info that might help us debug this:
Chain exists of:
event_mutex --> &cpuctx_mutex --> &event->child_mutex
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&event->child_mutex);
lock(&cpuctx_mutex);
lock(&event->child_mutex);
lock(event_mutex);
*** DEADLOCK ***
2 locks held by syz-executor.2/10110:
#0: (&ctx->mutex){+.+.}, at: [<ffffffff8165aa2e>] perf_event_release_kernel+0x1fe/0x8a0 kernel/events/core.c:4404
#1: (&event->child_mutex){+.+.}, at: [<ffffffff8165aa38>] perf_event_release_kernel+0x208/0x8a0 kernel/events/core.c:4405
stack backtrace:
CPU: 1 PID: 10110 Comm: syz-executor.2 Not tainted 4.14.302-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x281 lib/dump_stack.c:58
print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1258
check_prev_add kernel/locking/lockdep.c:1905 [inline]
check_prevs_add kernel/locking/lockdep.c:2022 [inline]
validate_chain kernel/locking/lockdep.c:2464 [inline]
__lock_acquire+0x2e0e/0x3f20 kernel/locking/lockdep.c:3491
lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
__mutex_lock_common kernel/locking/mutex.c:756 [inline]
__mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893
perf_trace_destroy+0x23/0xf0 kernel/trace/trace_event_perf.c:234
_free_event+0x321/0xe20 kernel/events/core.c:4246
free_event+0x32/0x40 kernel/events/core.c:4273
perf_event_release_kernel+0x368/0x8a0 kernel/events/core.c:4417
perf_release+0x33/0x40 kernel/events/core.c:4443
__fput+0x25f/0x7a0 fs/file_table.c:210
task_work_run+0x11f/0x190 kernel/task_work.c:113
tracehook_notify_resume include/linux/tracehook.h:191 [inline]
exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7ff05b6ddf8b
RSP: 002b:00007fff26784bd0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007ff05b6ddf8b
RDX: 0000001b2f020000 RSI: 0000001b2f0220a0 RDI: 0000000000000004
RBP: 00007ff05b84d980 R08: 0000000000000000 R09: 00000000ee52c24b
R10: 001493bc2af74e1f R11: 0000000000000293 R12: 0000000000034a88
R13: 00007fff26784cd0 R14: 00007fff26784cf0 R15: 0000000000000032
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'.
sch_tbf: burst 534 is lower than device veth3 mtu (1514) !
sch_tbf: burst 534 is lower than device veth3 mtu (1514) !
device batadv_slave_0 entered promiscuous mode
device batadv_slave_0 left promiscuous mode
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'.
XFS (loop0): Mounting V4 Filesystem
XFS (loop0): Ending clean mount
syz-executor.0 (10216) used greatest stack depth: 23872 bytes left
XFS (loop0): Unmounting Filesystem
XFS (loop0): Mounting V4 Filesystem
XFS (loop0): Ending clean mount
XFS (loop0): Unmounting Filesystem
XFS (loop0): Mounting V4 Filesystem
XFS (loop0): Ending clean mount
XFS (loop0): Unmounting Filesystem
XFS (loop0): Mounting V4 Filesystem
XFS (loop0): Ending clean mount
XFS (loop0): Unmounting Filesystem
audit: type=1800 audit(1671516162.626:6): pid=10505 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="loop4" ino=3 res=0
audit: type=1800 audit(1671516163.456:7): pid=10568 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=14013 res=0
audit: type=1800 audit(1671516163.506:8): pid=10569 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="bus" dev="loop2" ino=4 res=0
audit: type=1800 audit(1671516163.766:9): pid=10621 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="loop4" ino=5 res=0
audit: type=1800 audit(1671516163.806:10): pid=10639 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="loop4" ino=5 res=0
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
9pnet: Insufficient options for proto=fd
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
ntfs: volume version 3.1.
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
9pnet: Insufficient options for proto=fd
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
ntfs: (device loop1): parse_options(): Unrecognized mount option @.
ntfs: volume version 3.1.
ntfs: volume version 3.1.
ntfs: volume version 3.1.
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
9pnet: Insufficient options for proto=fd
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
9pnet: Insufficient options for proto=fd
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
9pnet: Insufficient options for proto=fd
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
9pnet: Insufficient options for proto=fd
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
9pnet: Insufficient options for proto=fd
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
9pnet: Insufficient options for proto=fd
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
9pnet: Insufficient options for proto=fd
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
9pnet: Insufficient options for proto=fd
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
9pnet: Insufficient options for proto=fd
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
9pnet: Insufficient options for proto=fd
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
9pnet: Insufficient options for proto=fd
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
9pnet: Insufficient options for proto=fd
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1