Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 UID: 0 PID: 13 Comm: kworker/u8:1 Not tainted 6.15.0-rc3-syzkaller-00019-gbc3372351d0c #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: netns cleanup_net
RIP: 0010:dst_dev_put+0x27/0x290 net/core/dst.c:146
Code: 90 90 90 f3 0f 1e fa 55 41 57 41 56 41 55 41 54 53 49 89 fd 49 bf 00 00 00 00 00 fc ff df e8 00 63 db f7 4d 89 ec 49 c1 ec 03 <43> 80 3c 3c 00 74 08 4c 89 ef e8 ca 0b 43 f8 4d 8b 75 00 49 8d 7d
RSP: 0018:ffffc90000007b18 EFLAGS: 00010246
RAX: ffffffff89e75960 RBX: 0000000000000001 RCX: ffff88801c680000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 1ffffffff1cf0e64 R08: ffffffff8a9232e9 R09: 1ffff1100b0b98c1
R10: dffffc0000000000 R11: ffffed100b0b98c2 R12: 0000000000000000
R13: 0000000000000001 R14: 00000000fffffff8 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888124fcf000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30f13ff8 CR3: 00000000679c6000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rt_fibinfo_free_cpus net/ipv4/fib_semantics.c:195 [inline]
 fib_nh_common_release+0x1fc/0x420 net/ipv4/fib_semantics.c:206
 fib6_info_destroy_rcu+0xc0/0x1b0 net/ipv6/ip6_fib.c:177
 rcu_do_batch kernel/rcu/tree.c:2568 [inline]
 rcu_core+0xaac/0x17a0 kernel/rcu/tree.c:2824
 handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lockdep_unregister_key+0x29a/0x2f0 kernel/locking/lockdep.c:6613
Code: f0 96 68 94 48 c7 c6 60 8c 9e 81 e8 30 bd 09 00 e8 0b c8 09 00 e9 3b fe ff ff e8 81 35 89 0a f7 c5 00 02 00 00 74 d2 fb 84 db <75> d1 eb e2 90 0f 0b 90 e9 35 ff ff ff 90 0f 0b 90 e9 46 ff ff ff
RSP: 0018:ffffc90000127358 EFLAGS: 00000202
RAX: 5386dbde08822700 RBX: 0000000000000001 RCX: 00000000000539d7
RDX: ffffffff942896e8 RSI: ffffffff8e4f231e RDI: ffffffff8ca0e2c0
RBP: 0000000000000a03 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff93651020
R13: 0000000000001000 R14: ffffffff946a9718 R15: ffff8880322c7a98
 __qdisc_destroy+0x165/0x410 net/sched/sch_generic.c:1080
 qdisc_put net/sched/sch_generic.c:1106 [inline]
 dev_shutdown+0x357/0x450 net/sched/sch_generic.c:1494
 unregister_netdevice_many_notify+0xe3a/0x2640 net/core/dev.c:11969
 unregister_netdevice_many net/core/dev.c:12046 [inline]
 unregister_netdevice_queue+0x383/0x400 net/core/dev.c:11889
 unregister_netdevice include/linux/netdevice.h:3374 [inline]
 _cfg80211_unregister_wdev+0x163/0x590 net/wireless/core.c:1256
 ieee80211_remove_interfaces+0x4f1/0x700 net/mac80211/iface.c:2319
 ieee80211_unregister_hw+0x5d/0x2c0 net/mac80211/main.c:1681
 mac80211_hwsim_del_radio+0x2c6/0x4c0 drivers/net/wireless/virtual/mac80211_hwsim.c:5665
 hwsim_exit_net+0x5c3/0x670 drivers/net/wireless/virtual/mac80211_hwsim.c:6545
 ops_exit_list net/core/net_namespace.c:172 [inline]
 cleanup_net+0x814/0xd60 net/core/net_namespace.c:654
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xac3/0x18e0 kernel/workqueue.c:3319
 worker_thread+0x870/0xd50 kernel/workqueue.c:3400
 kthread+0x7b7/0x940 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dst_dev_put+0x27/0x290 net/core/dst.c:146
Code: 90 90 90 f3 0f 1e fa 55 41 57 41 56 41 55 41 54 53 49 89 fd 49 bf 00 00 00 00 00 fc ff df e8 00 63 db f7 4d 89 ec 49 c1 ec 03 <43> 80 3c 3c 00 74 08 4c 89 ef e8 ca 0b 43 f8 4d 8b 75 00 49 8d 7d
RSP: 0018:ffffc90000007b18 EFLAGS: 00010246
RAX: ffffffff89e75960 RBX: 0000000000000001 RCX: ffff88801c680000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 1ffffffff1cf0e64 R08: ffffffff8a9232e9 R09: 1ffff1100b0b98c1
R10: dffffc0000000000 R11: ffffed100b0b98c2 R12: 0000000000000000
R13: 0000000000000001 R14: 00000000fffffff8 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888124fcf000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30f13ff8 CR3: 00000000679c6000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	f3 0f 1e fa          	endbr64
   7:	55                   	push   %rbp
   8:	41 57                	push   %r15
   a:	41 56                	push   %r14
   c:	41 55                	push   %r13
   e:	41 54                	push   %r12
  10:	53                   	push   %rbx
  11:	49 89 fd             	mov    %rdi,%r13
  14:	49 bf 00 00 00 00 00 	movabs $0xdffffc0000000000,%r15
  1b:	fc ff df
  1e:	e8 00 63 db f7       	call   0xf7db6323
  23:	4d 89 ec             	mov    %r13,%r12
  26:	49 c1 ec 03          	shr    $0x3,%r12
* 2a:	43 80 3c 3c 00       	cmpb   $0x0,(%r12,%r15,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 ef             	mov    %r13,%rdi
  34:	e8 ca 0b 43 f8       	call   0xf8430c03
  39:	4d 8b 75 00          	mov    0x0(%r13),%r14
  3d:	49                   	rex.WB
  3e:	8d                   	.byte 0x8d
  3f:	7d                   	.byte 0x7d