BUG: unable to handle page fault for address: 0000000000006028
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 9e936067 P4D 9e936067 PUD 9e9d1067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP
CPU: 1 PID: 8533 Comm: syz-executor.3 Not tainted 5.4.0-rc7+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:j1939_ndev_to_priv net/can/j1939/main.c:210 [inline]
RIP: 0010:j1939_priv_get_by_ndev_locked net/can/j1939/main.c:222 [inline]
RIP: 0010:j1939_priv_get_by_ndev+0x76/0xc0 net/can/j1939/main.c:234
Code: 81 fd 18 01 75 42 e8 49 d0 1b fd 48 8d bb f0 04 00 00 e8 ad dd 28 fd 48 8b 9b f0 04 00 00 48 8d bb 28 60 00 00 e8 9a dd 28 fd <4c> 8b a3 28 60 00 00 4d 85 e4 74 12 e8 19 d0 1b fd 49 8d bc 24 20
RSP: 0018:ffffc90000e03b30 EFLAGS: 00010202
RAX: 00000000000006ce RBX: 0000000000000000 RCX: ffffffff86040c68
RDX: 0000000000000000 RSI: ffffffff84285c67 RDI: 0000000000006028
RBP: ffffc90000e03b48 R08: 0000000000000000 R09: 0000000000006028
R10: ffffc90000e03b80 R11: 000000000000602f R12: 0000000000000000
R13: 0000000000000118 R14: ffffffff85c18c20 R15: 0000000000000000
FS:  0000000001943940(0000) GS:ffff88812bf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000006028 CR3: 000000009eb60000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 j1939_netdev_notify+0x31/0xc0 net/can/j1939/main.c:344
 notifier_call_chain+0xd7/0x160 kernel/notifier.c:95
 __raw_notifier_call_chain kernel/notifier.c:396 [inline]
 raw_notifier_call_chain+0x37/0x50 kernel/notifier.c:403
 call_netdevice_notifiers_info+0x48/0xc0 net/core/dev.c:1668
 call_netdevice_notifiers_extack net/core/dev.c:1680 [inline]
 call_netdevice_notifiers net/core/dev.c:1694 [inline]
 rollback_registered_many+0x723/0xa00 net/core/dev.c:8522
 rollback_registered+0xd2/0x160 net/core/dev.c:8564
 unregister_netdevice_queue net/core/dev.c:9656 [inline]
 unregister_netdevice_queue+0x199/0x2e0 net/core/dev.c:9649
 unregister_netdevice include/linux/netdevice.h:2637 [inline]
 __tun_detach+0xa1d/0xab0 drivers/net/tun.c:723
 tun_detach drivers/net/tun.c:740 [inline]
 tun_chr_close+0x71/0xb0 drivers/net/tun.c:3448
 __fput+0x1e1/0x520 fs/file_table.c:280
 ____fput+0x1f/0x30 fs/file_table.c:313
 task_work_run+0xf6/0x130 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop+0x2b4/0x2c0 arch/x86/entry/common.c:163
 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:274 [inline]
 do_syscall_64+0x353/0x370 arch/x86/entry/common.c:300
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x4141d1
Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007ffe3a010210 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000004141d1
RDX: 0000001b33620000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000000000001 R08: 00000000da3a7586 R09: ffffffffffffffff
R10: 00007ffe3a0102f0 R11: 0000000000000293 R12: 000000000075bf20
R13: 0000000000052dd3 R14: 0000000000761138 R15: 000000000075bf2c
Modules linked in:
CR2: 0000000000006028
---[ end trace c7ee1facd52e137c ]---
RIP: 0010:j1939_ndev_to_priv net/can/j1939/main.c:210 [inline]
RIP: 0010:j1939_priv_get_by_ndev_locked net/can/j1939/main.c:222 [inline]
RIP: 0010:j1939_priv_get_by_ndev+0x76/0xc0 net/can/j1939/main.c:234
Code: 81 fd 18 01 75 42 e8 49 d0 1b fd 48 8d bb f0 04 00 00 e8 ad dd 28 fd 48 8b 9b f0 04 00 00 48 8d bb 28 60 00 00 e8 9a dd 28 fd <4c> 8b a3 28 60 00 00 4d 85 e4 74 12 e8 19 d0 1b fd 49 8d bc 24 20
RSP: 0018:ffffc90000e03b30 EFLAGS: 00010202
RAX: 00000000000006ce RBX: 0000000000000000 RCX: ffffffff86040c68
RDX: 0000000000000000 RSI: ffffffff84285c67 RDI: 0000000000006028
RBP: ffffc90000e03b48 R08: 0000000000000000 R09: 0000000000006028
R10: ffffc90000e03b80 R11: 000000000000602f R12: 0000000000000000
R13: 0000000000000118 R14: ffffffff85c18c20 R15: 0000000000000000
FS:  0000000001943940(0000) GS:ffff88812bf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000006028 CR3: 000000009eb60000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400