Oops: general protection fault, probably for non-canonical address 0xdffffc001fffe000: 0000 [#1] SMP KASAN NOPTI
KASAN: probably user-memory-access in range [0x00000000ffff0000-0x00000000ffff0007]
CPU: 0 UID: 0 PID: 3510 Comm: kworker/u8:7 Not tainted 6.16.0-syzkaller-12288-g2b38afce25c4 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: netns cleanup_net
RIP: 0010:ip6_mc_clear_src+0x18f/0x580 net/ipv6/mcast.c:2593
Code: ff ff ff e8 33 d4 41 01 89 c5 31 ff 89 c6 e8 28 49 88 f7 85 ed 74 45 e8 df 44 88 f7 eb 05 e8 d8 44 88 f7 4c 89 e0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 e7 e8 f2 b1 eb f7 49 8b 2c 24 49 8d 7c
RSP: 0018:ffffc9000bf16dd8 EFLAGS: 00010216
RAX: 000000001fffe000 RBX: 1ffff1100cdc0e02 RCX: ffff888030855a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff8fa37e37 R09: 1ffffffff1f46fc6
R10: dffffc0000000000 R11: fffffbfff1f46fc7 R12: 00000000ffff0000
R13: dffffc0000000000 R14: 0000000000000538 R15: ffff888066e07010
FS:  0000000000000000(0000) GS:ffff888125c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000025000 CR3: 0000000056bf1000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 __ipv6_dev_mc_dec+0x2e4/0x330 net/ipv6/mcast.c:1009
 addrconf_leave_solict net/ipv6/addrconf.c:2257 [inline]
 __ipv6_ifa_notify+0x43d/0xac0 net/ipv6/addrconf.c:6299
 addrconf_ifdown+0xe69/0x1880 net/ipv6/addrconf.c:3977
 addrconf_notify+0x1bc/0x1010 net/ipv6/addrconf.c:-1
 notifier_call_chain+0x1b6/0x3e0 kernel/notifier.c:85
 call_netdevice_notifiers_extack net/core/dev.c:2267 [inline]
 call_netdevice_notifiers net/core/dev.c:2281 [inline]
 netif_close_many+0x29c/0x410 net/core/dev.c:1784
 unregister_netdevice_many_notify+0x5a7/0x1ff0 net/core/dev.c:12110
 unregister_netdevice_many net/core/dev.c:12211 [inline]
 unregister_netdevice_queue+0x33c/0x380 net/core/dev.c:12055
 unregister_netdevice include/linux/netdevice.h:3382 [inline]
 nsim_destroy+0x1dd/0x670 drivers/net/netdevsim/netdev.c:1136
 __nsim_dev_port_del+0x14d/0x1b0 drivers/net/netdevsim/dev.c:1473
 nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1485 [inline]
 nsim_dev_reload_destroy+0x288/0x490 drivers/net/netdevsim/dev.c:1707
 nsim_dev_reload_down+0x8a/0xc0 drivers/net/netdevsim/dev.c:983
 devlink_reload+0x1b6/0x8d0 net/devlink/dev.c:461
 devlink_pernet_pre_exit+0x1d9/0x3d0 net/devlink/core.c:509
 ops_pre_exit_list net/core/net_namespace.c:160 [inline]
 ops_undo_list+0x187/0x990 net/core/net_namespace.c:233
 cleanup_net+0x4c5/0x800 net/core/net_namespace.c:682
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ip6_mc_clear_src+0x18f/0x580 net/ipv6/mcast.c:2593
Code: ff ff ff e8 33 d4 41 01 89 c5 31 ff 89 c6 e8 28 49 88 f7 85 ed 74 45 e8 df 44 88 f7 eb 05 e8 d8 44 88 f7 4c 89 e0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 e7 e8 f2 b1 eb f7 49 8b 2c 24 49 8d 7c
RSP: 0018:ffffc9000bf16dd8 EFLAGS: 00010216
RAX: 000000001fffe000 RBX: 1ffff1100cdc0e02 RCX: ffff888030855a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff8fa37e37 R09: 1ffffffff1f46fc6
R10: dffffc0000000000 R11: fffffbfff1f46fc7 R12: 00000000ffff0000
R13: dffffc0000000000 R14: 0000000000000538 R15: ffff888066e07010
FS:  0000000000000000(0000) GS:ffff888125c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff3b980ed8 CR3: 00000000569f9000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess), 3 bytes skipped:
   0:	e8 33 d4 41 01       	call   0x141d438
   5:	89 c5                	mov    %eax,%ebp
   7:	31 ff                	xor    %edi,%edi
   9:	89 c6                	mov    %eax,%esi
   b:	e8 28 49 88 f7       	call   0xf7884938
  10:	85 ed                	test   %ebp,%ebp
  12:	74 45                	je     0x59
  14:	e8 df 44 88 f7       	call   0xf78844f8
  19:	eb 05                	jmp    0x20
  1b:	e8 d8 44 88 f7       	call   0xf78844f8
  20:	4c 89 e0             	mov    %r12,%rax
  23:	48 c1 e8 03          	shr    $0x3,%rax
* 27:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2c:	74 08                	je     0x36
  2e:	4c 89 e7             	mov    %r12,%rdi
  31:	e8 f2 b1 eb f7       	call   0xf7ebb228
  36:	49 8b 2c 24          	mov    (%r12),%rbp
  3a:	49                   	rex.WB
  3b:	8d                   	.byte 0x8d
  3c:	7c                   	.byte 0x7c