wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
==================================================================
BUG: KASAN: use-after-free in inet_twsk_kill+0x358/0x3c0 net/ipv4/inet_timewait_sock.c:46
Read of size 8 at addr ffff8880085fd740 by task kworker/u4:6/345

CPU: 1 PID: 345 Comm: kworker/u4:6 Not tainted 5.17.0-rc1-next-20220127 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Workqueue: phy24 ieee80211_iface_work
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x8b/0xb3 lib/dump_stack.c:106
 print_address_description.constprop.0+0x1f/0x190 mm/kasan/report.c:255
 __kasan_report mm/kasan/report.c:442 [inline]
 kasan_report.cold+0x7f/0x11b mm/kasan/report.c:459
 inet_twsk_kill+0x358/0x3c0 net/ipv4/inet_timewait_sock.c:46
 call_timer_fn+0x182/0x600 kernel/time/timer.c:1421
 expire_timers kernel/time/timer.c:1466 [inline]
 __run_timers.part.0+0x666/0xa00 kernel/time/timer.c:1734
 __run_timers kernel/time/timer.c:1715 [inline]
 run_timer_softirq+0xae/0x1a0 kernel/time/timer.c:1747
 __do_softirq+0x270/0x8c7 kernel/softirq.c:558
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x113/0x170 kernel/softirq.c:637
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x2e/0x50 kernel/locking/spinlock.c:194
Code: 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 3a d8 1e fd 48 89 ef e8 a2 53 1f fd 80 e7 02 74 06 e8 b8 fa 3f fd fb bf 01 00 00 00 <e8> 7d 0f 15 fd 65 8b 05 a6 5e f8 7b 85 c0 74 03 5b 5d c3 0f 1f 44
RSP: 0018:ffff888017ed7a58 EFLAGS: 00000202
RAX: 000000000010b549 RBX: 0000000000000246 RCX: 1ffffffff0d4628e
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffffff852bacc0 R08: 0000000000000001 R09: ffffffff86a1484f
R10: fffffbfff0d42909 R11: 0000000000000001 R12: ffff88801570f950
R13: ffff88801570ea68 R14: ffffffff83d94226 R15: ffff888030d7a800
 find_and_remove_object+0xe4/0x120 mm/kmemleak.c:560
 delete_object_full mm/kmemleak.c:693 [inline]
 kmemleak_free+0x1f/0x30 mm/kmemleak.c:970
 kmemleak_free_recursive include/linux/kmemleak.h:49 [inline]
 slab_free_hook mm/slub.c:1698 [inline]
 slab_free_freelist_hook mm/slub.c:1754 [inline]
 slab_free mm/slub.c:3509 [inline]
 kfree+0x1fb/0x330 mm/slub.c:4562
 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1611 [inline]
 ieee80211_ibss_rx_queued_mgmt+0x1b06/0x3230 net/mac80211/ibss.c:1639
 ieee80211_iface_process_skb net/mac80211/iface.c:1527 [inline]
 ieee80211_iface_work+0xa5b/0xcd0 net/mac80211/iface.c:1581
 process_one_work+0xa14/0x1690 kernel/workqueue.c:2289
 worker_thread+0x637/0x1260 kernel/workqueue.c:2436
 kthread+0x2f0/0x3a0 kernel/kthread.c:377
 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:295
 </TASK>

Allocated by task 296:
 kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:436 [inline]
 __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:469
 kasan_slab_alloc include/linux/kasan.h:260 [inline]
 slab_post_alloc_hook mm/slab.h:732 [inline]
 slab_alloc_node mm/slub.c:3230 [inline]
 slab_alloc mm/slub.c:3238 [inline]
 kmem_cache_alloc+0x1aa/0x480 mm/slub.c:3243
 kmem_cache_zalloc include/linux/slab.h:705 [inline]
 net_alloc net/core/net_namespace.c:407 [inline]
 copy_net_ns+0x125/0x760 net/core/net_namespace.c:462
 create_new_namespaces+0x3f6/0xb30 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:226
 ksys_unshare+0x445/0x8d0 kernel/fork.c:3048
 __do_sys_unshare kernel/fork.c:3119 [inline]
 __se_sys_unshare kernel/fork.c:3117 [inline]
 __x64_sys_unshare+0x2d/0x40 kernel/fork.c:3117
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

The buggy address belongs to the object at ffff8880085fd300
 which belongs to the cache net_namespace of size 5056
The buggy address is located 1088 bytes inside of
 5056-byte region [ffff8880085fd300, ffff8880085fe6c0)
The buggy address belongs to the page:
page:000000007b73f24b refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880085fe7c0 pfn:0x85f8
head:000000007b73f24b order:3 compound_mapcount:0 compound_pincount:0
memcg:ffff88800c43bd01
flags: 0x100000000010200(slab|head|node=0|zone=1)
raw: 0100000000010200 0000000000000000 dead000000000122 ffff88800805d640
raw: ffff8880085fe7c0 0000000080060004 00000001ffffffff ffff88800c43bd01
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880085fd600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880085fd680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880085fd700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                           ^
 ffff8880085fd780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880085fd800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
loop2: detected capacity change from 0 to 128
loop4: detected capacity change from 0 to 256
FAT-fs (loop2): Unrecognized mount option "ÿÿ00000000000000000000000" or missing value
FAT-fs (loop4): bogus number of reserved sectors
FAT-fs (loop4): Can't find a valid FAT filesystem
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
loop4: detected capacity change from 0 to 256
FAT-fs (loop4): bogus number of reserved sectors
FAT-fs (loop4): Can't find a valid FAT filesystem
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
loop2: detected capacity change from 0 to 128
FAT-fs (loop2): Unrecognized mount option "ÿÿ00000000000000000000000" or missing value
----------------
Code disassembly (best guess):
   0:	48 83 c7 18          	add    $0x18,%rdi
   4:	53                   	push   %rbx
   5:	48 89 f3             	mov    %rsi,%rbx
   8:	48 8b 74 24 10       	mov    0x10(%rsp),%rsi
   d:	e8 3a d8 1e fd       	callq  0xfd1ed84c
  12:	48 89 ef             	mov    %rbp,%rdi
  15:	e8 a2 53 1f fd       	callq  0xfd1f53bc
  1a:	80 e7 02             	and    $0x2,%bh
  1d:	74 06                	je     0x25
  1f:	e8 b8 fa 3f fd       	callq  0xfd3ffadc
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
* 2a:	e8 7d 0f 15 fd       	callq  0xfd150fac <-- trapping instruction
  2f:	65 8b 05 a6 5e f8 7b 	mov    %gs:0x7bf85ea6(%rip),%eax        # 0x7bf85edc
  36:	85 c0                	test   %eax,%eax
  38:	74 03                	je     0x3d
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	c3                   	retq
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	44                   	rex.R