IPVS: You probably need to specify IP address on multicast interface.
IPVS: Error connecting to the multicast addr
IPVS: ftp: loaded support on port[0] = 21
==================================================================
BUG: KASAN: slab-out-of-bounds in find_first_bit+0xf7/0x100 lib/find_bit.c:107
Read of size 8 at addr ffff8801d37f2b10 by task kswapd0/1532

CPU: 1 PID: 1532 Comm: kswapd0 Not tainted 4.18.0-rc3-next-20180706+ #1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 print_address_description+0x6c/0x20b mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report.cold.7+0x242/0x30d mm/kasan/report.c:412
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433
 find_first_bit+0xf7/0x100 lib/find_bit.c:107
 shrink_slab_memcg mm/vmscan.c:580 [inline]
 shrink_slab+0x5d0/0xdb0 mm/vmscan.c:672
 shrink_node+0x429/0x16a0 mm/vmscan.c:2736
------------[ cut here ]------------
kernel BUG at mm/vmscan.c:593!
invalid opcode: 0000 [#1] SMP KASAN
CPU: 0 PID: 10360 Comm: syz-executor5 Not tainted 4.18.0-rc3-next-20180706+ #1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:shrink_slab_memcg mm/vmscan.c:593 [inline]
RIP: 0010:shrink_slab+0xb3e/0xdb0 mm/vmscan.c:672
Code: 8d 
a8 
 kswapd_shrink_node mm/vmscan.c:3458 [inline]
 balance_pgdat+0x7ca/0x1010 mm/vmscan.c:3568
fd 
ff 
ff 
f0 
 kswapd+0x82e/0x12f0 mm/vmscan.c:3790
48 
0f 
b3 
08 
e8 
3d 
b8 
da 
ff 
48 8b 85 
c0 
 kthread+0x345/0x410 kernel/kthread.c:246
fd 
ff 
ff 
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:415
c7 

00 
Allocated by task 10132:
f8 
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
f8 
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc+0xc4/0xe0 mm/kasan/kasan.c:553
f8 
 __do_kmalloc_node mm/slab.c:3682 [inline]
 __kmalloc_node+0x47/0x70 mm/slab.c:3689
f8 
 kmalloc_node include/linux/slab.h:555 [inline]
 kvmalloc_node+0x65/0xf0 mm/util.c:423
c6 
 kvmalloc include/linux/mm.h:557 [inline]
 memcg_expand_one_shrinker_map mm/memcontrol.c:341 [inline]
 memcg_expand_shrinker_maps+0x1b1/0x3c0 mm/memcontrol.c:416
40 
 prealloc_memcg_shrinker mm/vmscan.c:185 [inline]
 prealloc_shrinker+0x29e/0x450 mm/vmscan.c:366
04 
 alloc_super+0x8dd/0xb10 fs/super.c:264
f8 
 sget_userns+0x276/0x860 fs/super.c:615
e9 
 sget+0x10b/0x150 fs/super.c:667
5d 
 mount_bdev+0x115/0x3e0 fs/super.c:1325
fb 
 vfat_mount+0x3c/0x50 fs/fat/namei_vfat.c:1056
ff 
 legacy_get_tree+0x118/0x440 fs/fs_context.c:659
ff 
 vfs_get_tree+0x1cb/0x5c0 fs/super.c:1751
e8 
 do_new_mount fs/namespace.c:2567 [inline]
 do_mount+0x6c1/0x1fb0 fs/namespace.c:2889
22 
 ksys_mount+0x12d/0x140 fs/namespace.c:3105
b8 
 __do_sys_mount fs/namespace.c:3119 [inline]
 __se_sys_mount fs/namespace.c:3116 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3116
da 
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
ff 
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
<0f> 

0b 
Freed by task 2873:
e8 
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
1b 
 set_track mm/kasan/kasan.c:460 [inline]
 __kasan_slab_free+0x11a/0x170 mm/kasan/kasan.c:521
b8 
 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528
da 
 __cache_free mm/slab.c:3498 [inline]
 kfree+0xd9/0x260 mm/slab.c:3813
ff 
 single_release+0x8f/0xb0 fs/seq_file.c:596
48 
 __fput+0x35d/0x930 fs/file_table.c:215
8b 
 ____fput+0x15/0x20 fs/file_table.c:251
9d 
 task_work_run+0x1ec/0x2a0 kernel/task_work.c:113
d8 
 tracehook_notify_resume include/linux/tracehook.h:192 [inline]
 exit_to_usermode_loop+0x313/0x370 arch/x86/entry/common.c:166
fd 
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293
ff 
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
ff 

31 
The buggy address belongs to the object at ffff8801d37f2b00
 which belongs to the cache kmalloc-32 of size 32
ff 
The buggy address is located 16 bytes inside of
 32-byte region [ffff8801d37f2b00, ffff8801d37f2b20)
48 
The buggy address belongs to the page:
89 
page:ffffea00074dfc80 count:1 mapcount:0 mapping:ffff8801da8001c0 index:0xffff8801d37f2fc1
de 
e8 
flags: 0x2fffc0000000100(slab)
3a 
raw: 02fffc0000000100 ffffea0007477d48 ffffea00074ce7c8 ffff8801da8001c0
b9 
raw: ffff8801d37f2fc1 ffff8801d37f2000 000000010000003f 0000000000000000
page dumped because: kasan: bad access detected
RSP: 0018:ffff88018f84e260 EFLAGS: 00010293

Memory state around the buggy address:
RAX: ffff880197b96500 RBX: ffff88018f84e4b0 RCX: ffffffff81a1bf32
 ffff8801d37f2a00: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
RDX: 0000000000000000 RSI: ffffffff81a1c23e RDI: 0000000000000007
 ffff8801d37f2a80: fb fb fb fb fc fc fc fc 00 00 06 fc fc fc fc fc
RBP: ffff88018f84e4d8 R08: ffff880197b96500 R09: ffffed0039832c20
>ffff8801d37f2b00: 00 00 06 fc fc fc fc fc fb fb fb fb fc fc fc fc
R10: ffffed0039832c20 R11: ffff8801cc196107 R12: dffffc0000000000
                         ^
R13: ffff8801cc32d1f0 R14: 0000000000000000 R15: ffff88018f84e2f0
 ffff8801d37f2b80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
FS:  0000000000b21940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
 ffff8801d37f2c00: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4b3dd02000 CR3: 00000001b22e3000 CR4: 00000000001406f0
==================================================================
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000