binder: release 8103:8108 transaction 349 out, still active
binder: undelivered TRANSACTION_COMPLETE
binder: undelivered TRANSACTION_ERROR: 29201
binder: send failed reply for transaction 349, target dead
==================================================================
BUG: KASAN: use-after-free in strlen+0x85/0xa0 lib/string.c:482
Read of size 1 at addr ffff8801d4bcd740 by task kworker/0:3/8952

CPU: 0 PID: 8952 Comm: kworker/0:3 Not tainted 4.16.0-rc2+ #238
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: hwsim_wq destroy_radio
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x24d lib/dump_stack.c:53
 print_address_description+0x73/0x250 mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report+0x23b/0x360 mm/kasan/report.c:412
 __asan_report_load1_noabort+0x14/0x20 mm/kasan/report.c:430
 strlen+0x85/0xa0 lib/string.c:482
 strlen include/linux/string.h:267 [inline]
 hwsim_mcast_del_radio drivers/net/wireless/mac80211_hwsim.c:2835 [inline]
 mac80211_hwsim_del_radio+0x168/0x3b0 drivers/net/wireless/mac80211_hwsim.c:2854
 destroy_radio+0x9d/0x100 drivers/net/wireless/mac80211_hwsim.c:3396
 process_one_work+0xbbf/0x1af0 kernel/workqueue.c:2113
 worker_thread+0x223/0x1990 kernel/workqueue.c:2247
 kthread+0x33c/0x400 kernel/kthread.c:238
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:407

Allocated by task 3243:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:447
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:552
 __do_kmalloc mm/slab.c:3705 [inline]
 __kmalloc_track_caller+0x15e/0x760 mm/slab.c:3720
 kvasprintf+0xa9/0x130 lib/kasprintf.c:25
 kvasprintf_const+0x56/0x160 lib/kasprintf.c:49
 kobject_set_name_vargs+0x5b/0x140 lib/kobject.c:263
 dev_set_name+0xb4/0xf0 drivers/base/core.c:1649
 wiphy_new_nm+0x910/0x21d0 net/wireless/core.c:451
 ieee80211_alloc_hw_nm+0x4b4/0x2180 net/mac80211/main.c:531
 mac80211_hwsim_new_radio+0x227/0x2cd0 drivers/net/wireless/mac80211_hwsim.c:2537
 hwsim_new_radio_nl+0x67a/0x8c0 drivers/net/wireless/mac80211_hwsim.c:3213
 genl_family_rcv_msg+0x7b7/0xfb0 net/netlink/genetlink.c:599
 genl_rcv_msg+0xb2/0x140 net/netlink/genetlink.c:624
 netlink_rcv_skb+0x14b/0x380 net/netlink/af_netlink.c:2444
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:635
 netlink_unicast_kernel net/netlink/af_netlink.c:1308 [inline]
 netlink_unicast+0x4c4/0x6b0 net/netlink/af_netlink.c:1334
 netlink_sendmsg+0xa4a/0xe60 net/netlink/af_netlink.c:1897
 sock_sendmsg_nosec net/socket.c:630 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:640
 ___sys_sendmsg+0x767/0x8b0 net/socket.c:2046
 __sys_sendmsg+0xe5/0x210 net/socket.c:2080
 C_SYSC_sendmsg net/compat.c:739 [inline]
 compat_SyS_sendmsg+0x2a/0x40 net/compat.c:737
 do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline]
 do_fast_syscall_32+0x3ec/0xf9f arch/x86/entry/common.c:392
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139

Freed by task 24474:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:447
 set_track mm/kasan/kasan.c:459 [inline]
 __kasan_slab_free+0x11a/0x170 mm/kasan/kasan.c:520
 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:527
 __cache_free mm/slab.c:3485 [inline]
 kfree+0xd9/0x260 mm/slab.c:3800
 kfree_const+0x31/0x40 mm/util.c:38
 kobject_rename+0x1b3/0x2a0 lib/kobject.c:501
 device_rename+0x147/0x1f0 drivers/base/core.c:2648
 cfg80211_switch_netns+0x1fa/0x470 net/wireless/core.c:192
 cfg80211_pernet_exit+0x93/0xc0 net/wireless/core.c:1336
 ops_exit_list.isra.6+0xae/0x150 net/core/net_namespace.c:142
 cleanup_net+0x6a1/0xcb0 net/core/net_namespace.c:517
 process_one_work+0xbbf/0x1af0 kernel/workqueue.c:2113
 worker_thread+0x223/0x1990 kernel/workqueue.c:2247
 kthread+0x33c/0x400 kernel/kthread.c:238
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:407

The buggy address belongs to the object at ffff8801d4bcd740
 which belongs to the cache kmalloc-32 of size 32
The buggy address is located 0 bytes inside of
 32-byte region [ffff8801d4bcd740, ffff8801d4bcd760)
The buggy address belongs to the page:
page:ffffea000752f340 count:1 mapcount:0 mapping:ffff8801d4bcd000 index:0xffff8801d4bcdfc1
flags: 0x2fffc0000000100(slab)
raw: 02fffc0000000100 ffff8801d4bcd000 ffff8801d4bcdfc1 0000000100000014
raw: ffffea00074a28e0 ffffea00075af9e0 ffff8801dac001c0 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801d4bcd600: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
 ffff8801d4bcd680: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
>ffff8801d4bcd700: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
                                           ^
 ffff8801d4bcd780: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
 ffff8801d4bcd800: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
==================================================================