[    2.457073] netdevsim netdevsim6484 eni6484np1: renamed from eth0
[    2.517692] netdevsim netdevsim2937 eni2937np1: renamed from eth0
[    3.345982] BUG: kernel NULL pointer dereference, address: 0000000000000000
[    3.346083] #PF: supervisor write access in kernel mode
[    3.346118] #PF: error_code(0x0002) - not-present page
[    3.346154] PGD 0 P4D 0 
[    3.346175] Oops: Oops: 0002 [#1] SMP
[    3.346204] CPU: 2 UID: 0 PID: 235 Comm: python3 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) 
[    3.346272] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    3.346321] RIP: 0010:work_grab_pending+0x2f/0x1b0
[    3.346371] 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
[    3.346480] RSP: 0018:ffffbca240597ae8 EFLAGS: 00010046
[    3.346515] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000100009
[    3.346567] RDX: ffffbca240597b20 RSI: 0000000000000000 RDI: 0000000000000000
[    3.346616] RBP: ffffbca240597b20 R08: 0000000000000000 R09: ffffffffb833c800
[    3.346666] R10: ffff9d0a02ed6000 R11: 0000000000000001 R12: 0000000000000000
[    3.346716] R13: ffffbca240597c18 R14: 0000000000000020 R15: 0000000000000000
[    3.346762] FS:  00007f2932a36740(0000) GS:ffff9d0a854d6000(0000) knlGS:0000000000000000
[    3.346818] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    3.346860] CR2: 0000000000000000 CR3: 0000000004de0004 CR4: 0000000000772ef0
[    3.346905] PKRU: 55555554
[    3.346925] Call Trace:
[    3.346942]  <TASK>
[    3.346964]  __cancel_work+0x29/0xe0
[    3.346994]  __cancel_work_sync+0x16/0x80
[    3.347022]  __dev_close_many+0x113/0x2b0
[    3.347057]  netif_close_many+0x98/0x160
[    3.347084]  unregister_netdevice_many_notify+0x10c/0xaa0
[    3.347119]  unregister_netdevice_queue+0xa0/0xe0
[    3.347154]  nsim_destroy+0x86/0x180 [netdevsim]
[    3.347194]  __nsim_dev_port_del+0x47/0x70 [netdevsim]
[    3.347234]  nsim_dev_reload_destroy+0x5b/0x110 [netdevsim]
[    3.347273]  nsim_drv_remove+0x2f/0xb0 [netdevsim]
[    3.347310]  device_release_driver_internal+0x193/0x200
[    3.347351]  bus_remove_device+0xc1/0x100
[    3.347378]  device_del+0x15f/0x480
[    3.347406]  device_unregister+0x12/0x30
[    3.347433]  del_device_store+0x117/0x1a0 [netdevsim]
[    3.347473]  kernfs_fop_write_iter+0x12b/0x1c0
[    3.347514]  vfs_write+0x33a/0x470
[    3.347546]  ksys_write+0x65/0xe0
[    3.347573]  do_syscall_64+0xa4/0xfd0
[    3.347602]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    3.347637] RIP: 0033:0x7f2932c15257
[    3.347664] 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
[    3.347773] RSP: 002b:00007ffcddfe5e18 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    3.347822] RAX: ffffffffffffffda RBX: 00007f2932a366e0 RCX: 00007f2932c15257
[    3.347872] RDX: 0000000000000004 RSI: 0000557a78087bb0 RDI: 0000000000000005
[    3.347922] RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000002
[    3.347966] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f29249b9340
[    3.348011] R13: 0000557a78087bb0 R14: 0000000000000005 R15: 0000557a77e50020
[    3.348063]  </TASK>
[    3.348081] Modules linked in: netdevsim
[    3.348110] CR2: 0000000000000000
[    3.348137] ---[ end trace 0000000000000000 ]---
[    3.348171] RIP: 0010:work_grab_pending+0x2f/0x1b0
[    3.348207] 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
[    3.348337] RSP: 0018:ffffbca240597ae8 EFLAGS: 00010046
[    3.348372] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000100009
[    3.348422] RDX: ffffbca240597b20 RSI: 0000000000000000 RDI: 0000000000000000
[    3.348478] RBP: ffffbca240597b20 R08: 0000000000000000 R09: ffffffffb833c800
[    3.348527] R10: ffff9d0a02ed6000 R11: 0000000000000001 R12: 0000000000000000
[    3.348571] R13: ffffbca240597c18 R14: 0000000000000020 R15: 0000000000000000
[    3.348624] FS:  00007f2932a36740(0000) GS:ffff9d0a854d6000(0000) knlGS:0000000000000000
[    3.348674] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    3.348715] CR2: 0000000000000000 CR3: 0000000004de0004 CR4: 0000000000772ef0
[    3.348761] PKRU: 55555554
[    3.348794] note: python3[235] exited with irqs disabled