[    2.303882] netdevsim netdevsim31343 eni31343np1: renamed from eth0
[    2.365810] netdevsim netdevsim6936 eni6936np1: renamed from eth0
[    4.052673] BUG: kernel NULL pointer dereference, address: 0000000000000000
[    4.052758] #PF: supervisor write access in kernel mode
[    4.052795] #PF: error_code(0x0002) - not-present page
[    4.052835] PGD 0 P4D 0 
[    4.052858] Oops: Oops: 0002 [#1] SMP
[    4.052886] CPU: 3 UID: 0 PID: 234 Comm: python3 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) 
[    4.052949] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    4.052996] RIP: 0010:work_grab_pending+0x2f/0x1b0
[    4.053040] Code: 83 e6 01 41 57 41 56 4c 8d 77 20 41 55 41 54 41 89 f4 55 48 89 d5 53 48 89 fb 9c 58 fa 48 89 45 00 45 85 e4 0f 85 8a 00 00 00 <f0> 48 0f ba 2b 00 41 0f 92 c5 72 0e 5b 44 89 e8 5d 41 5c 41 5d 41
[    4.053158] RSP: 0018:ffffb482c05efae8 EFLAGS: 00010046
[    4.053195] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 000000008010000d
[    4.053253] RDX: ffffb482c05efb20 RSI: 0000000000000000 RDI: 0000000000000000
[    4.053308] RBP: ffffb482c05efb20 R08: 0000000000000001 R09: ffffffff9913c800
[    4.053367] R10: ffff8e67c342c800 R11: 0000000000000001 R12: 0000000000000000
[    4.053421] R13: ffffb482c05efc18 R14: 0000000000000020 R15: 0000000000000000
[    4.053477] FS:  00007f9431fec740(0000) GS:ffff8e6864756000(0000) knlGS:0000000000000000
[    4.053535] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    4.053582] CR2: 0000000000000000 CR3: 0000000004de8002 CR4: 0000000000772ef0
[    4.053636] PKRU: 55555554
[    4.053656] Call Trace:
[    4.053675]  <TASK>
[    4.053697]  __cancel_work+0x29/0xe0
[    4.053732]  __cancel_work_sync+0x16/0x80
[    4.053762]  __dev_close_many+0x113/0x2b0
[    4.053809]  netif_close_many+0x98/0x160
[    4.053852]  unregister_netdevice_many_notify+0x10c/0xaa0
[    4.053892]  unregister_netdevice_queue+0xa0/0xe0
[    4.053934]  nsim_destroy+0x86/0x180 [netdevsim]
[    4.053979]  __nsim_dev_port_del+0x47/0x70 [netdevsim]
[    4.054019]  nsim_dev_reload_destroy+0x5b/0x110 [netdevsim]
[    4.054060]  nsim_drv_remove+0x2f/0xb0 [netdevsim]
[    4.054101]  device_release_driver_internal+0x193/0x200
[    4.054141]  bus_remove_device+0xc1/0x100
[    4.054171]  device_del+0x15f/0x480
[    4.054204]  device_unregister+0x12/0x30
[    4.054237]  del_device_store+0x117/0x1a0 [netdevsim]
[    4.054281]  kernfs_fop_write_iter+0x12b/0x1c0
[    4.054326]  vfs_write+0x33a/0x470
[    4.054364]  ksys_write+0x65/0xe0
[    4.054397]  do_syscall_64+0xa4/0xfd0
[    4.054428]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    4.054466] RIP: 0033:0x7f94321cb257
[    4.054496] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
[    4.054614] RSP: 002b:00007fff72b24fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    4.054666] RAX: ffffffffffffffda RBX: 00007f9431fec6e0 RCX: 00007f94321cb257
[    4.054720] RDX: 0000000000000005 RSI: 0000556291de21d0 RDI: 0000000000000006
[    4.054774] RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000002
[    4.054827] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f9423f1cd00
[    4.054882] R13: 0000556291de21d0 R14: 0000000000000006 R15: 0000556291af80c0
[    4.054937]  </TASK>
[    4.054958] Modules linked in: netdevsim
[    4.054989] CR2: 0000000000000000
[    4.055019] ---[ end trace 0000000000000000 ]---
[    4.055056] RIP: 0010:work_grab_pending+0x2f/0x1b0
[    4.055094] Code: 83 e6 01 41 57 41 56 4c 8d 77 20 41 55 41 54 41 89 f4 55 48 89 d5 53 48 89 fb 9c 58 fa 48 89 45 00 45 85 e4 0f 85 8a 00 00 00 <f0> 48 0f ba 2b 00 41 0f 92 c5 72 0e 5b 44 89 e8 5d 41 5c 41 5d 41
[    4.055217] RSP: 0018:ffffb482c05efae8 EFLAGS: 00010046
[    4.055257] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 000000008010000d
[    4.055311] RDX: ffffb482c05efb20 RSI: 0000000000000000 RDI: 0000000000000000
[    4.055364] RBP: ffffb482c05efb20 R08: 0000000000000001 R09: ffffffff9913c800
[    4.055417] R10: ffff8e67c342c800 R11: 0000000000000001 R12: 0000000000000000
[    4.055471] R13: ffffb482c05efc18 R14: 0000000000000020 R15: 0000000000000000
[    4.055528] FS:  00007f9431fec740(0000) GS:ffff8e6864756000(0000) knlGS:0000000000000000
[    4.055582] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    4.055626] CR2: 0000000000000000 CR3: 0000000004de8002 CR4: 0000000000772ef0
[    4.055681] PKRU: 55555554
[    4.055702] note: python3[234] exited with irqs disabled