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BUG: KASAN: stack-out-of-bounds in unwind_next_frame+0x169f/0x1810 arch/x86/kernel/unwind_orc.c:470
Read of size 8 at addr ffff8881dba076f8 by task syz-executor999/1837

CPU: 0 PID: 1837 Comm: syz-executor999 Not tainted 4.14.149+ #0
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xca/0x134 lib/dump_stack.c:53
 print_address_description+0x60/0x226 mm/kasan/report.c:187
 __kasan_report.cold+0x1a/0x41 mm/kasan/report.c:316
 unwind_next_frame+0x169f/0x1810 arch/x86/kernel/unwind_orc.c:470
 perf_callchain_kernel+0x3a0/0x540 arch/x86/events/core.c:2338
 get_perf_callchain+0x2f5/0x770 kernel/events/callchain.c:217
 perf_callchain+0x147/0x190 kernel/events/callchain.c:190
 perf_prepare_sample+0x6a8/0x1360 kernel/events/core.c:6148
 __perf_event_output kernel/events/core.c:6264 [inline]
 perf_event_output_forward+0xdc/0x220 kernel/events/core.c:6282
 __perf_event_overflow+0x12d/0x340 kernel/events/core.c:7520
 perf_swevent_overflow+0x7a/0xf0 kernel/events/core.c:7596
 perf_swevent_event+0x19c/0x270 kernel/events/core.c:7629
 perf_tp_event+0x633/0x7f0 kernel/events/core.c:8058
 perf_trace_run_bpf_submit kernel/events/core.c:8028 [inline]
 perf_trace_run_bpf_submit+0x113/0x170 kernel/events/core.c:8014
 perf_trace_lock_acquire+0x341/0x4e0 include/trace/events/lock.h:13
 trace_lock_acquire include/trace/events/lock.h:13 [inline]
 lock_acquire+0x279/0x360 kernel/locking/lockdep.c:3993
 rcu_lock_acquire include/linux/rcupdate.h:242 [inline]
 rcu_read_lock include/linux/rcupdate.h:629 [inline]
 sk_filter_trim_cap net/core/filter.c:95 [inline]
 sk_filter_trim_cap+0x18e/0x7f0 net/core/filter.c:73
 sk_filter include/linux/filter.h:725 [inline]
 sock_queue_rcv_skb+0x20/0x50 net/core/sock.c:479
 packet_rcv_spkt+0x39e/0x4d0 net/packet/af_packet.c:1884
 deliver_skb net/core/dev.c:1881 [inline]
 deliver_ptype_list_skb net/core/dev.c:1896 [inline]
 __netif_receive_skb_core+0xa71/0x2cf0 net/core/dev.c:4460
 __netif_receive_skb+0x66/0x210 net/core/dev.c:4515
 netif_receive_skb_internal+0x11f/0x5f0 net/core/dev.c:4588
 napi_skb_finish net/core/dev.c:4949 [inline]
 napi_gro_receive+0x206/0x410 net/core/dev.c:4980
 receive_buf+0x503/0x4310 drivers/net/virtio_net.c:852
 virtnet_receive drivers/net/virtio_net.c:1098 [inline]
 virtnet_poll+0x4e6/0x9f0 drivers/net/virtio_net.c:1189
 napi_poll net/core/dev.c:5598 [inline]
 net_rx_action+0x366/0xcd0 net/core/dev.c:5664
 __do_softirq+0x234/0x9ec kernel/softirq.c:288
 invoke_softirq kernel/softirq.c:368 [inline]
 irq_exit+0x114/0x150 kernel/softirq.c:409
 exiting_irq arch/x86/include/asm/apic.h:648 [inline]
 do_IRQ+0x104/0x1c0 arch/x86/kernel/irq.c:242
 common_interrupt+0x8c/0x8c arch/x86/entry/entry_64.S:576
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline]
RIP: 0010:lock_acquire+0x170/0x360 kernel/locking/lockdep.c:3997
RSP: 0018:ffff8881cf5e7ba8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff6e
RAX: 0000000000000007 RBX: ffff8881cfe41780 RCX: 1ffff11039fc83fa
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000246
RBP: ffff8881cfe42878 R08: 0000000000003c49 R09: 0000000000000000
R10: ffff8881cfe41fb0 R11: b014e9afc0b10c96 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 __mutex_lock_common kernel/locking/mutex.c:756 [inline]
 __mutex_lock+0xf7/0x13e0 kernel/locking/mutex.c:893
 SYSC_perf_event_open kernel/events/core.c:10378 [inline]
 SyS_perf_event_open+0x1a4d/0x2560 kernel/events/core.c:9988
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x441229
RSP: 002b:00007fff79347088 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441229
RDX: 00000000ffffffff RSI: 0000000000000000 RDI: 0000000020000140
RBP: 0000000000005489 R08: 0000000000000000 R09: 00000000004002c8
R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000402050
R13: 00000000004020e0 R14: 0000000000000000 R15: 0000000000000000

The buggy address belongs to the page:
page:ffffea00076e81c0 count:1 mapcount:0 mapping:          (null) index:0x0
flags: 0x4000000000001000(reserved)
raw: 4000000000001000 0000000000000000 0000000000000000 00000001ffffffff
raw: ffffea00076e81e0 ffffea00076e81e0 0000000000000000 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881dba07580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8881dba07600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8881dba07680: 00 00 00 00 00 00 f1 f1 f1 f1 f1 f1 04 f2 00 f3
                                                                ^
 ffff8881dba07700: f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8881dba07780: 00 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1
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