IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
8021q: adding VLAN 0 to HW filter on device team0
==================================================================
BUG: KASAN: slab-out-of-bounds in tick_sched_handle+0x16c/0x180 kernel/time/tick-sched.c:161
Read of size 8 at addr ffff8881b53ddef0 by task syz-executor758/6046

CPU: 0 PID: 6046 Comm: syz-executor758 Not tainted 4.20.0-rc6-next-20181217+ #172
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
 print_address_description.cold.4+0x9/0x1ff mm/kasan/report.c:187
 kasan_report.cold.5+0x1b/0x39 mm/kasan/report.c:317
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/generic_report.c:135
 tick_sched_handle+0x16c/0x180 kernel/time/tick-sched.c:161
 tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1271
 __run_hrtimer kernel/time/hrtimer.c:1389 [inline]
 __hrtimer_run_queues+0x41c/0x10d0 kernel/time/hrtimer.c:1451
 hrtimer_interrupt+0x313/0x780 kernel/time/hrtimer.c:1509
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1035 [inline]
 smp_apic_timer_interrupt+0x1a1/0x760 arch/x86/kernel/apic/apic.c:1060
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
 </IRQ>

Allocated by task 3626:
 save_stack+0x43/0xd0 mm/kasan/common.c:73
 set_track mm/kasan/common.c:85 [inline]
 kasan_kmalloc+0xcb/0xd0 mm/kasan/common.c:482
 kasan_slab_alloc+0x12/0x20 mm/kasan/common.c:397
 kmem_cache_alloc+0x130/0x730 mm/slab.c:3541
 getname_flags+0xd0/0x590 fs/namei.c:140
 user_path_at_empty+0x2d/0x50 fs/namei.c:2608
 user_path_at include/linux/namei.h:57 [inline]
 user_statfs+0x9d/0x150 fs/statfs.c:89
 __do_sys_statfs+0x7f/0xf0 fs/statfs.c:181
 __se_sys_statfs fs/statfs.c:178 [inline]
 __x64_sys_statfs+0x54/0x80 fs/statfs.c:178
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 3626:
 save_stack+0x43/0xd0 mm/kasan/common.c:73
 set_track mm/kasan/common.c:85 [inline]
 __kasan_slab_free+0x102/0x150 mm/kasan/common.c:444
 kasan_slab_free+0xe/0x10 mm/kasan/common.c:452
 __cache_free mm/slab.c:3485 [inline]
 kmem_cache_free+0x83/0x290 mm/slab.c:3747
 putname+0xf2/0x130 fs/namei.c:261
 filename_lookup+0x39a/0x520 fs/namei.c:2357
 user_path_at_empty+0x40/0x50 fs/namei.c:2608
 user_path_at include/linux/namei.h:57 [inline]
 user_statfs+0x9d/0x150 fs/statfs.c:89
 __do_sys_statfs+0x7f/0xf0 fs/statfs.c:181
 __se_sys_statfs fs/statfs.c:178 [inline]
 __x64_sys_statfs+0x54/0x80 fs/statfs.c:178
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

The buggy address belongs to the object at ffff8881b53dce00
 which belongs to the cache names_cache of size 4096
The buggy address is located 240 bytes to the right of
 4096-byte region [ffff8881b53dce00, ffff8881b53dde00)
The buggy address belongs to the page:
page:ffffea0006d4f700 count:1 mapcount:0 mapping:ffff8881da986e00 index:0x0 compound_mapcount: 0
flags: 0x2fffc0000010200(slab|head)
raw: 02fffc0000010200 ffffea0006d36688 ffffea0006d3a408 ffff8881da986e00
raw: 0000000000000000 ffff8881b53dce00 0000000100000001 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881b53ddd80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881b53dde00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8881b53dde80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                             ^
 ffff8881b53ddf00: fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00
 ffff8881b53ddf80: 00 00 00 00 00 fc fc fc fc fc fc fc 00 00 00 00
==================================================================