[ 1.793108] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 2.391423] devlink (255) used greatest stack depth: 12224 bytes left [ 2.392415] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 2.392666] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 2.393005] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 4.906506] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 5.052868] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 7.201507] Failed to register fib notifier [ 7.252691] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 7.267475] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 7.267550] #PF: supervisor write access in kernel mode [ 7.267594] #PF: error_code(0x0002) - not-present page [ 7.267639] PGD 0 P4D 0 [ 7.267661] Oops: Oops: 0002 [#1] SMP [ 7.267700] CPU: 0 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) [ 7.267785] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 7.267840] Workqueue: netns cleanup_net [ 7.267884] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 7.267938] 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 [ 7.268093] RSP: 0018:ffffa7ae4024fbb8 EFLAGS: 00010046 [ 7.268137] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 00000000ffffffff [ 7.268205] RDX: ffffa7ae4024fbf0 RSI: 0000000000000000 RDI: 0000000000000000 [ 7.268275] RBP: ffffa7ae4024fbf0 R08: ffffffff94050fb0 R09: 0000000000000101 [ 7.268339] R10: ffffffff948080d8 R11: ffffa7ae40003ff8 R12: 0000000000000000 [ 7.268406] R13: ffffa7ae4024fce8 R14: 0000000000000020 R15: ffffa7ae4024fdf0 [ 7.268476] FS: 0000000000000000(0000) GS:ffff8f01e9bd9000(0000) knlGS:0000000000000000 [ 7.268548] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 7.268602] CR2: 0000000000000000 CR3: 000000000306a002 CR4: 0000000000772ef0 [ 7.268674] PKRU: 55555554 [ 7.268702] Call Trace: [ 7.268726] [ 7.268748] __cancel_work+0x29/0xe0 [ 7.268785] ? dev_deactivate_many+0x2c9/0x300 [ 7.268843] __cancel_work_sync+0x16/0x80 [ 7.268878] __dev_close_many+0x113/0x2b0 [ 7.268919] netif_close_many+0x98/0x160 [ 7.268952] unregister_netdevice_many_notify+0x10c/0xaa0 [ 7.269002] default_device_exit_batch+0x29b/0x300 [ 7.269055] ops_undo_list+0xec/0x1f0 [ 7.269088] cleanup_net+0x1b7/0x2b0 [ 7.269122] process_one_work+0x162/0x380 [ 7.269155] worker_thread+0x299/0x3c0 [ 7.269189] ? rescuer_thread+0x4c0/0x4c0 [ 7.269224] kthread+0x101/0x1f0 [ 7.269264] ? kthreads_online_cpu+0x110/0x110 [ 7.269314] ? kthreads_online_cpu+0x110/0x110 [ 7.269358] ret_from_fork+0x11c/0x140 [ 7.269399] ? kthreads_online_cpu+0x110/0x110 [ 7.269443] ret_from_fork_asm+0x11/0x20 [ 7.269486] [ 7.269507] Modules linked in: netdevsim [ 7.269543] CR2: 0000000000000000 [ 7.269576] ---[ end trace 0000000000000000 ]--- [ 7.269621] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 7.269666] 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 [ 7.269819] RSP: 0018:ffffa7ae4024fbb8 EFLAGS: 00010046 [ 7.269863] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 00000000ffffffff [ 7.269930] RDX: ffffa7ae4024fbf0 RSI: 0000000000000000 RDI: 0000000000000000 [ 7.270002] RBP: ffffa7ae4024fbf0 R08: ffffffff94050fb0 R09: 0000000000000101 [ 7.270070] R10: ffffffff948080d8 R11: ffffa7ae40003ff8 R12: 0000000000000000 [ 7.270136] R13: ffffa7ae4024fce8 R14: 0000000000000020 R15: ffffa7ae4024fdf0 [ 7.270204] FS: 0000000000000000(0000) GS:ffff8f01e9bd9000(0000) knlGS:0000000000000000 [ 7.270273] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 7.270329] CR2: 0000000000000000 CR3: 000000000306a002 CR4: 0000000000772ef0 [ 7.270396] PKRU: 55555554 [ 7.270418] note: kworker/u16:1[66] exited with irqs disabled WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr WAIT TIMEOUT stderr