BUG: unable to handle page fault for address: ffff8880b861c020
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 1a201067 P4D 1a201067 PUD 0 
Oops: Oops: 0002 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 17533 Comm: syz.0.4161 Not tainted 6.17.0-rc1-syzkaller-00036-gdfc0f6373094 #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: 10 ed bd 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 9b 0b 0d fb 49 8b 07 48 8b 0c 24 <4a> 01 4c 28 20 4c 89 f7 be 00 02 00 00 e8 72 dd 6e fa 4c 89 e7 be
RSP: 0018:ffffc90006626de0 EFLAGS: 00010246
RAX: ffff8880b861c000 RBX: ffff8880295c0800 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008
RBP: 0000000000000000 R08: ffffffff8e1e58e7 R09: 1ffffffff1c3cb1c
R10: dffffc0000000000 R11: fffffbfff1c3cb1d R12: ffff8880295c0a18
R13: 0000000000000000 R14: ffffffff871608a3 R15: ffffffff8dbded10
FS:  00007fca309236c0(0000) GS:ffff8880b861c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8880b861c020 CR3: 0000000127244000 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+0xb35/0xd50
 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: 0033:0x7fca2fb8ebe9
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:00007fca30923038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fca2fdb5fa0 RCX: 00007fca2fb8ebe9
RDX: 0000000000000000 RSI: 0000200000000080 RDI: 0000000000000004
RBP: 00007fca2fc11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fca2fdb6038 R14: 00007fca2fdb5fa0 R15: 00007fff68c05a68
 </TASK>
Modules linked in:
CR2: ffff8880b861c020
---[ end trace 0000000000000000 ]---
RIP: 0010:nsim_queue_free+0xdc/0x150
Code: 10 ed bd 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 9b 0b 0d fb 49 8b 07 48 8b 0c 24 <4a> 01 4c 28 20 4c 89 f7 be 00 02 00 00 e8 72 dd 6e fa 4c 89 e7 be
RSP: 0018:ffffc90006626de0 EFLAGS: 00010246
RAX: ffff8880b861c000 RBX: ffff8880295c0800 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008
RBP: 0000000000000000 R08: ffffffff8e1e58e7 R09: 1ffffffff1c3cb1c
R10: dffffc0000000000 R11: fffffbfff1c3cb1d R12: ffff8880295c0a18
R13: 0000000000000000 R14: ffffffff871608a3 R15: ffffffff8dbded10
FS:  00007fca309236c0(0000) GS:ffff8880b861c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8880b861c020 CR3: 0000000127244000 CR4: 00000000000006f0
