[ 7.459029] netdevsim netdevsim478 eni478np1: renamed from eth0 [ 8.106324] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 8.106400] #PF: supervisor write access in kernel mode [ 8.106435] #PF: error_code(0x0002) - not-present page [ 8.106471] PGD 0 P4D 0 [ 8.106492] Oops: Oops: 0002 [#1] SMP [ 8.106520] CPU: 2 UID: 0 PID: 2014 Comm: tc-mq-visibilit Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) [ 8.106589] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 8.106630] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 8.106673] 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 48 0f ba 2b 00 41 0f 92 c5 72 0e 5b 44 89 e8 5d 41 5c 41 5d 41 [ 8.106783] RSP: 0018:ffffb6034051fae8 EFLAGS: 00010046 [ 8.106818] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 00000000001009c2 [ 8.106863] RDX: ffffb6034051fb20 RSI: 0000000000000000 RDI: 0000000000000000 [ 8.106915] RBP: ffffb6034051fb20 R08: ffff9f354157b220 R09: 0000000000000001 [ 8.106970] R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000000 [ 8.107020] R13: ffffb6034051fc18 R14: 0000000000000020 R15: 0000000000000000 [ 8.107071] FS: 00007f747cc2c000(0000) GS:ffff9f35e42d9000(0000) knlGS:0000000000000000 [ 8.107122] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 8.107177] CR2: 0000000000000000 CR3: 00000000067c6003 CR4: 0000000000772ef0 [ 8.107225] PKRU: 55555554 [ 8.107244] Call Trace: [ 8.107261] [ 8.107282] __cancel_work+0x29/0xe0 [ 8.107315] __cancel_work_sync+0x16/0x80 [ 8.107343] __dev_close_many+0x113/0x2b0 [ 8.107371] netif_close_many+0x98/0x160 [ 8.107398] unregister_netdevice_many_notify+0x10c/0xaa0 [ 8.107434] unregister_netdevice_queue+0xa0/0xe0 [ 8.107469] nsim_destroy+0x7e/0x180 [netdevsim] [ 8.107510] __nsim_dev_port_del+0x47/0x70 [netdevsim] [ 8.107545] nsim_dev_reload_destroy+0x5b/0x120 [netdevsim] [ 8.107581] nsim_drv_remove+0x2f/0xb0 [netdevsim] [ 8.107616] device_release_driver_internal+0x193/0x200 [ 8.107652] bus_remove_device+0xc1/0x100 [ 8.107679] device_del+0x15f/0x480 [ 8.107709] device_unregister+0x12/0x30 [ 8.107739] del_device_store+0x117/0x1a0 [netdevsim] [ 8.107827] kernfs_fop_write_iter+0x12b/0x1c0 [ 8.107870] vfs_write+0x33a/0x470 [ 8.107903] ksys_write+0x65/0xe0 [ 8.107931] do_syscall_64+0xa4/0xfd0 [ 8.107972] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 8.108009] RIP: 0033:0x7f747cd2c257 [ 8.108036] 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 [ 8.108145] RSP: 002b:00007ffc0bc819d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 8.108206] RAX: ffffffffffffffda RBX: 00007f747ce28780 RCX: 00007f747cd2c257 [ 8.108251] RDX: 0000000000000004 RSI: 0000557b36490f30 RDI: 0000000000000001 [ 8.108296] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000 [ 8.108346] R10: 0000000000000100 R11: 0000000000000246 R12: 0000000000000004 [ 8.108391] R13: 0000557b36490f30 R14: 0000000000000004 R15: 00007f747ce239c0 [ 8.108437] [ 8.108456] Modules linked in: netdevsim [ 8.108486] CR2: 0000000000000000 [ 8.108513] ---[ end trace 0000000000000000 ]--- [ 8.108548] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 8.108584] 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 48 0f ba 2b 00 41 0f 92 c5 72 0e 5b 44 89 e8 5d 41 5c 41 5d 41 [ 8.108709] RSP: 0018:ffffb6034051fae8 EFLAGS: 00010046 [ 8.108749] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 00000000001009c2 [ 8.108793] RDX: ffffb6034051fb20 RSI: 0000000000000000 RDI: 0000000000000000 [ 8.108838] RBP: ffffb6034051fb20 R08: ffff9f354157b220 R09: 0000000000000001 [ 8.108889] R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000000 [ 8.108939] R13: ffffb6034051fc18 R14: 0000000000000020 R15: 0000000000000000 [ 8.109003] FS: 00007f747cc2c000(0000) GS:ffff9f35e42d9000(0000) knlGS:0000000000000000 [ 8.109056] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 8.109098] CR2: 0000000000000000 CR3: 00000000067c6003 CR4: 0000000000772ef0 [ 8.109144] PKRU: 55555554 [ 8.109163] note: tc-mq-visibilit[2014] exited with irqs disabled