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BUG: KASAN: slab-out-of-bounds in nla_strlcpy+0x13d/0x150 lib/nlattr.c:314
Read of size 1 at addr ffff8801d42c64ad by task syz-executor3/4150

CPU: 1 PID: 4150 Comm: syz-executor3 Not tainted 4.17.0-rc7+ #73
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+0x1b9/0x294 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+0x242/0x2fe mm/kasan/report.c:412
 __asan_report_load1_noabort+0x14/0x20 mm/kasan/report.c:430
 nla_strlcpy+0x13d/0x150 lib/nlattr.c:314
 nfnl_acct_new+0x574/0xc50 net/netfilter/nfnetlink_acct.c:118
 nfnetlink_rcv_msg+0xdb5/0xff0 net/netfilter/nfnetlink.c:212
 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2448
 nfnetlink_rcv+0x1fe/0x1ba0 net/netfilter/nfnetlink.c:513
 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline]
 netlink_unicast+0x58b/0x740 net/netlink/af_netlink.c:1336
 netlink_sendmsg+0x9f0/0xfa0 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:629 [inline]
 sock_sendmsg+0xd5/0x120 net/socket.c:639
 sock_write_iter+0x35a/0x5a0 net/socket.c:908
 call_write_iter include/linux/fs.h:1784 [inline]
 new_sync_write fs/read_write.c:474 [inline]
 __vfs_write+0x64d/0x960 fs/read_write.c:487
 vfs_write+0x1f8/0x560 fs/read_write.c:549
 ksys_write+0xf9/0x250 fs/read_write.c:598
 __do_sys_write fs/read_write.c:610 [inline]
 __se_sys_write fs/read_write.c:607 [inline]
 __x64_sys_write+0x73/0xb0 fs/read_write.c:607
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455a09
RSP: 002b:00007f58706bec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f58706bf6d4 RCX: 0000000000455a09
RDX: 000000000000001f RSI: 0000000020000080 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000007a8 R14: 0000000000700860 R15: 0000000000000000

Allocated by task 1:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc+0xc4/0xe0 mm/kasan/kasan.c:553
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc_track_caller+0x14a/0x760 mm/slab.c:3733
 kvasprintf+0xa9/0x130 lib/kasprintf.c:25
 kvasprintf_const+0x67/0x190 lib/kasprintf.c:49
 kobject_set_name_vargs+0x5b/0x150 lib/kobject.c:262
 dev_set_name+0xa4/0xc0 drivers/base/core.c:1658
 device_add+0x214/0x16d0 drivers/base/core.c:1776
 device_register+0x1d/0x20 drivers/base/core.c:1914
 init_clocksource_sysfs+0x38/0x44 kernel/time/clocksource.c:1045
 do_one_initcall+0x127/0x913 init/main.c:884
 do_initcall_level init/main.c:952 [inline]
 do_initcalls init/main.c:960 [inline]
 do_basic_setup init/main.c:978 [inline]
 kernel_init_freeable+0x49b/0x58e init/main.c:1135
 kernel_init+0x11/0x1b3 init/main.c:1061
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412

Freed by task 0:
(stack is not available)

The buggy address belongs to the object at ffff8801d42c6480
 which belongs to the cache kmalloc-32 of size 32
The buggy address is located 13 bytes to the right of
 32-byte region [ffff8801d42c6480, ffff8801d42c64a0)
The buggy address belongs to the page:
page:ffffea000750b180 count:1 mapcount:0 mapping:ffff8801d42c6000 index:0xffff8801d42c6fc1
flags: 0x2fffc0000000100(slab)
raw: 02fffc0000000100 ffff8801d42c6000 ffff8801d42c6fc1 0000000100000017
raw: ffffea000752a560 ffffea00072a6720 ffff8801da8001c0 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801d42c6380: 00 03 fc fc fc fc fc fc 00 03 fc fc fc fc fc fc
 ffff8801d42c6400: 00 05 fc fc fc fc fc fc 00 05 fc fc fc fc fc fc
>ffff8801d42c6480: 00 05 fc fc fc fc fc fc fb fb fb fb fc fc fc fc
                                  ^
 ffff8801d42c6500: fb fb fb fb fc fc fc fc 07 fc fc fc fc fc fc fc
 ffff8801d42c6580: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
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