IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
==================================================================
BUG: KASAN: stack-out-of-bounds in __read_once_size include/linux/compiler.h:183 [inline]
BUG: KASAN: stack-out-of-bounds in update_stack_state+0x561/0x5d0 arch/x86/kernel/unwind_frame.c:270
Read of size 8 at addr ffff8880759ef1b8 by task syz-executor.4/7358

CPU: 0 PID: 7358 Comm: syz-executor.4 Not tainted 4.14.173-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xf7/0x13b lib/dump_stack.c:58
 print_address_description.cold.7+0x9/0x1c9 mm/kasan/report.c:252
 kasan_report_error mm/kasan/report.c:351 [inline]
 kasan_report.cold.8+0x11a/0x2d3 mm/kasan/report.c:409
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:430
 __read_once_size include/linux/compiler.h:183 [inline]
 update_stack_state+0x561/0x5d0 arch/x86/kernel/unwind_frame.c:270
 __unwind_start+0x189/0x410 arch/x86/kernel/unwind_frame.c:423
 unwind_start arch/x86/include/asm/unwind.h:60 [inline]
 perf_callchain_kernel+0x23d/0x540 arch/x86/events/core.c:2342
 get_perf_callchain+0x2c8/0x7d0 kernel/events/callchain.c:217
 perf_callchain+0x125/0x170 kernel/events/callchain.c:190
 perf_prepare_sample+0xc90/0x1350 kernel/events/core.c:6154
 __perf_event_output kernel/events/core.c:6270 [inline]
 perf_event_output_forward+0xdd/0x1d0 kernel/events/core.c:6288
 __perf_event_overflow+0x107/0x300 kernel/events/core.c:7526
 perf_swevent_overflow+0x165/0x210 kernel/events/core.c:7602
 perf_swevent_event+0x1f5/0x2f0 kernel/events/core.c:7635
 do_perf_sw_event kernel/events/core.c:7743 [inline]
 ___perf_sw_event+0x26b/0x3f0 kernel/events/core.c:7774
 perf_sw_event_sched include/linux/perf_event.h:1063 [inline]
 perf_event_task_sched_out include/linux/perf_event.h:1101 [inline]
 prepare_task_switch kernel/sched/core.c:2601 [inline]
 context_switch kernel/sched/core.c:2773 [inline]
 __schedule+0xf9c/0x1d20 kernel/sched/core.c:3384
 preempt_schedule_common+0x1f/0xe0 kernel/sched/core.c:3508
 preempt_schedule+0x4d/0x60 kernel/sched/core.c:3534
 ___preempt_schedule+0x16/0x18
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
 _raw_spin_unlock_irqrestore+0xbb/0xd0 kernel/locking/spinlock.c:192
 try_to_wake_up+0xba/0xf80 kernel/sched/core.c:2091
 wake_up_process kernel/sched/core.c:2160 [inline]
 wake_up_q+0x9c/0xe0 kernel/sched/core.c:468
 futex_wake+0x316/0x560 kernel/futex.c:1697
 do_futex+0x573/0x1760 kernel/futex.c:3907
 SYSC_futex kernel/futex.c:3963 [inline]
 SyS_futex+0xf1/0x250 kernel/futex.c:3931
 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45aff9
RSP: 002b:00007f9ad360fcf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 000000000075bf28 RCX: 000000000045aff9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 000000000075bf2c
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000004 R11: 0000000000000246 R12: 000000000075bf2c
R13: 00007fff6d2d61cf R14: 00007f9ad36109c0 R15: 000000000075bf2c

The buggy address belongs to the page:
page:ffffea0001d67bc0 count:0 mapcount:0 mapping:          (null) index:0x0
flags: 0xfffe0000000000()
raw: 00fffe0000000000 0000000000000000 0000000000000000 00000000ffffffff
raw: 0000000000000000 0000000100000001 0000000000000000 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880759ef080: f1 f1 00 00 00 00 00 00 00 00 00 00 00 00 f3 f3
 ffff8880759ef100: f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8880759ef180: f1 f1 f1 f1 00 00 00 f2 f3 f3 f3 f3 00 00 00 00
                                        ^
 ffff8880759ef200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8880759ef280: 00 00 00 00 f1 f1 f1 f1 00 f2 f2 f2 f3 f3 f3 f3
==================================================================