BUG: unable to handle page fault for address: ffff8880b8680020
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 1a001067 P4D 1a001067 PUD 0 
Oops: Oops: 0002 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 12335 Comm: syz.1.2851 Not tainted 6.16.0-syzkaller-06600-g1dbf1d590d10 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:nsim_queue_free+0xdc/0x150
Code: d0 ec b9 8d 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ff e8 db 73 11 fb 49 8b 07 48 8b 0c 24 <4a> 01 4c 28 20 4c 89 f7 be 00 02 00 00 e8 a2 90 73 fa 4c 89 e7 be
RSP: 0018:ffffc90006e36de0 EFLAGS: 00010246
RAX: ffff8880b8680000 RBX: ffff888128c23000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008
RBP: 0000000000000000 R08: ffffffff8e1e8ca7 R09: 1ffffffff1c3d194
R10: dffffc0000000000 R11: fffffbfff1c3d195 R12: ffff888128c23218
R13: 0000000000000000 R14: ffffffff87115f23 R15: ffffffff8db9ecd0
FS:  00007f23676846c0(0000) GS:ffff8880b8680000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8880b8680020 CR3: 000000004899a000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 nsim_create+0xbbf/0xf10
 __nsim_dev_port_add+0x6b6/0xb10
 nsim_dev_port_add_all+0x37/0xf0
 nsim_dev_reload_up+0x451/0x780
 devlink_reload+0x4ec/0x8d0
 devlink_nl_reload_doit+0x9c2/0xd50
 genl_family_rcv_msg_doit+0x215/0x300
 genl_rcv_msg+0x60e/0x790
 netlink_rcv_skb+0x208/0x470
 genl_rcv+0x28/0x40
 netlink_unicast+0x82f/0x9e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f236678ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2367684038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f23669b5fa0 RCX: 00007f236678ebe9
RDX: 0000000000000000 RSI: 0000200000000100 RDI: 0000000000000005
RBP: 00007f2366811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f23669b6038 R14: 00007f23669b5fa0 R15: 00007ffde6e91128
 </TASK>
Modules linked in:
CR2: ffff8880b8680020
---[ end trace 0000000000000000 ]---
RIP: 0010:nsim_queue_free+0xdc/0x150
Code: d0 ec b9 8d 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ff e8 db 73 11 fb 49 8b 07 48 8b 0c 24 <4a> 01 4c 28 20 4c 89 f7 be 00 02 00 00 e8 a2 90 73 fa 4c 89 e7 be
RSP: 0018:ffffc90006e36de0 EFLAGS: 00010246
RAX: ffff8880b8680000 RBX: ffff888128c23000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008
RBP: 0000000000000000 R08: ffffffff8e1e8ca7 R09: 1ffffffff1c3d194
R10: dffffc0000000000 R11: fffffbfff1c3d195 R12: ffff888128c23218
R13: 0000000000000000 R14: ffffffff87115f23 R15: ffffffff8db9ecd0
FS:  00007f23676846c0(0000) GS:ffff8880b8680000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8880b8680020 CR3: 000000004899a000 CR4: 00000000000006f0
