IPVS: ftp: loaded support on port[0] = 21
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BUG: KASAN: slab-out-of-bounds in tcindex_set_parms+0x17fd/0x1a00 net/sched/cls_tcindex.c:455
Write of size 16 at addr ffff8880a472a1b8 by task syz-executor714/9778

CPU: 0 PID: 9778 Comm: syz-executor714 Not tainted 5.6.0-rc3-next-20200228-syzkaller #0
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+0x188/0x20d lib/dump_stack.c:118
 print_address_description.constprop.0.cold+0xd3/0x315 mm/kasan/report.c:374
 __kasan_report.cold+0x1a/0x32 mm/kasan/report.c:506
 kasan_report+0xe/0x20 mm/kasan/common.c:618
 tcindex_set_parms+0x17fd/0x1a00 net/sched/cls_tcindex.c:455
 tcindex_change+0x203/0x2e0 net/sched/cls_tcindex.c:518
 tc_new_tfilter+0xa59/0x20b0 net/sched/cls_api.c:2103
 rtnetlink_rcv_msg+0x810/0xad0 net/core/rtnetlink.c:5431
 netlink_rcv_skb+0x15a/0x410 net/netlink/af_netlink.c:2478
 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
 netlink_unicast+0x537/0x740 net/netlink/af_netlink.c:1329
 netlink_sendmsg+0x882/0xe10 net/netlink/af_netlink.c:1918
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:672
 ____sys_sendmsg+0x6b9/0x7d0 net/socket.c:2343
 ___sys_sendmsg+0x100/0x170 net/socket.c:2397
 __sys_sendmsg+0xec/0x1b0 net/socket.c:2430
 do_syscall_64+0xf6/0x790 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440e79
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffdc9193c18 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000004a2650 RCX: 0000000000440e79
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003
RBP: 00007ffdc9193c20 R08: 0000000120080522 R09: 0000000120080522
R10: 0000000120080522 R11: 0000000000000246 R12: 00000000004a2650
R13: 0000000000402410 R14: 0000000000000000 R15: 0000000000000000

Allocated by task 1:
 save_stack+0x1b/0x40 mm/kasan/common.c:49
 set_track mm/kasan/common.c:57 [inline]
 __kasan_kmalloc mm/kasan/common.c:492 [inline]
 __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:465
 kmem_cache_alloc_node_trace+0x161/0x790 mm/slab.c:3595
 kmalloc_node include/linux/slab.h:573 [inline]
 init_cache_node mm/slab.c:826 [inline]
 init_cache_node+0x38/0x100 mm/slab.c:807
 setup_kmem_cache_node+0x67/0x3f0 mm/slab.c:895
 setup_kmem_cache_nodes mm/slab.c:3772 [inline]
 __do_tune_cpucache+0x161/0x210 mm/slab.c:3842
 do_tune_cpucache+0x21/0xc0 mm/slab.c:3851
 enable_cpucache+0x3a/0xd0 mm/slab.c:3932
 __kmem_cache_create+0x1bc/0x250 mm/slab.c:2071
 create_cache+0x108/0x1f0 mm/slab_common.c:407
 kmem_cache_create_usercopy+0x1ab/0x280 mm/slab_common.c:505
 kmem_cache_create+0xd/0x10 mm/slab_common.c:564
 dlm_memory_init+0x57/0x85 fs/dlm/memory.c:27
 init_dlm+0xc/0x102 fs/dlm/main.c:26
 do_one_initcall+0x10a/0x7d0 init/main.c:1155
 do_initcall_level init/main.c:1228 [inline]
 do_initcalls init/main.c:1244 [inline]
 do_basic_setup init/main.c:1264 [inline]
 kernel_init_freeable+0x501/0x5ae init/main.c:1449
 kernel_init+0xd/0x1bb init/main.c:1355
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

Freed by task 0:
(stack is not available)

The buggy address belongs to the object at ffff8880a472a100
 which belongs to the cache kmalloc-192 of size 192
The buggy address is located 184 bytes inside of
 192-byte region [ffff8880a472a100, ffff8880a472a1c0)
The buggy address belongs to the page:
page:ffffea000291ca80 refcount:1 mapcount:0 mapping:000000007269cf97 index:0x0
flags: 0xfffe0000000200(slab)
raw: 00fffe0000000200 ffffea0002900c88 ffffea0002914148 ffff8880aa000000
raw: 0000000000000000 ffff8880a472a000 0000000100000010 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880a472a080: 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8880a472a100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8880a472a180: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc
                                        ^
 ffff8880a472a200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8880a472a280: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc
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