[ 2.188381] ip (267) used greatest stack depth: 12120 bytes left [ 6.402932] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 6.403044] #PF: supervisor write access in kernel mode [ 6.403090] #PF: error_code(0x0002) - not-present page [ 6.403128] PGD 0 P4D 0 [ 6.403155] Oops: Oops: 0002 [#1] SMP [ 6.403190] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) [ 6.403268] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 6.403322] Workqueue: netns cleanup_net [ 6.403366] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 6.403415] 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 [ 6.403572] RSP: 0018:ffffab9d80067bb8 EFLAGS: 00010046 [ 6.403614] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000000 [ 6.403682] RDX: ffffab9d80067bf0 RSI: 0000000000000000 RDI: 0000000000000000 [ 6.403752] RBP: ffffab9d80067bf0 R08: 0000000000000001 R09: 0000000000000132 [ 6.403807] R10: ffff95cb7ec2cc00 R11: 000000000000014f R12: 0000000000000000 [ 6.403864] R13: ffffab9d80067ce8 R14: 0000000000000020 R15: ffffab9d80067df0 [ 6.403921] FS: 0000000000000000(0000) GS:ffff95cbc1d91000(0000) knlGS:0000000000000000 [ 6.403988] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 6.404042] CR2: 0000000000000000 CR3: 0000000028a46005 CR4: 0000000000772ef0 [ 6.404106] PKRU: 55555554 [ 6.404132] Call Trace: [ 6.404159] [ 6.404183] __cancel_work+0x29/0xe0 [ 6.404220] ? xdp_rxq_info_unreg+0x18/0x30 [ 6.404260] __cancel_work_sync+0x16/0x80 [ 6.404292] __dev_close_many+0x113/0x2b0 [ 6.404333] netif_close_many+0x98/0x160 [ 6.404369] unregister_netdevice_many_notify+0x1ea/0xaa0 [ 6.404416] ? unregister_netdevice_queue+0x29/0xe0 [ 6.404460] default_device_exit_batch+0x29b/0x300 [ 6.404504] ? mutex_lock+0x12/0x30 [ 6.404550] ops_undo_list+0xec/0x1f0 [ 6.404586] cleanup_net+0x1b7/0x300 [ 6.404623] process_one_work+0x162/0x380 [ 6.404654] worker_thread+0x299/0x3c0 [ 6.404689] ? rescuer_thread+0x4c0/0x4c0 [ 6.404724] kthread+0x101/0x1f0 [ 6.404759] ? kthreads_online_cpu+0x110/0x110 [ 6.404804] ? kthreads_online_cpu+0x110/0x110 [ 6.404848] ret_from_fork+0x11c/0x140 [ 6.404887] ? kthreads_online_cpu+0x110/0x110 [ 6.404932] ret_from_fork_asm+0x11/0x20 [ 6.404966] [ 6.404991] Modules linked in: [ 6.405027] CR2: 0000000000000000 [ 6.405068] ---[ end trace 0000000000000000 ]--- [ 6.405113] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 6.405159] 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 [ 6.405300] RSP: 0018:ffffab9d80067bb8 EFLAGS: 00010046 [ 6.405344] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000000 [ 6.405400] RDX: ffffab9d80067bf0 RSI: 0000000000000000 RDI: 0000000000000000 [ 6.405456] RBP: ffffab9d80067bf0 R08: 0000000000000001 R09: 0000000000000132 [ 6.405514] R10: ffff95cb7ec2cc00 R11: 000000000000014f R12: 0000000000000000 [ 6.405579] R13: ffffab9d80067ce8 R14: 0000000000000020 R15: ffffab9d80067df0 [ 6.405650] FS: 0000000000000000(0000) GS:ffff95cbc1d91000(0000) knlGS:0000000000000000 [ 6.405715] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 6.405768] CR2: 0000000000000000 CR3: 0000000028a46005 CR4: 0000000000772ef0 [ 6.405825] PKRU: 55555554 [ 6.405850] note: kworker/u16:0[12] exited with irqs disabled [ 66.849340] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 60 sec [ 127.265316] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 120 sec [ 187.681302] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 181 sec [ 248.097299] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 241 sec [ 308.513319] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 302 sec [ 368.929308] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 362 sec [ 429.345305] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 422 sec [ 489.761301] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 483 sec [ 550.177298] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 543 sec [ 610.593310] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 604 sec [ 671.009299] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 664 sec [ 731.425299] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 725 sec [ 791.841320] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 785 sec [ 852.257308] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 845 sec [ 912.673301] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 906 sec [ 973.089312] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 966 sec [ 1033.505309] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 1027 sec [ 1093.921301] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 1087 sec [ 1154.337315] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 1147 sec [ 1214.753309] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 1208 sec [ 1275.169299] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 1268 sec [ 1335.585303] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 1329 sec [ 1396.001307] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 1389 sec [ 1456.417303] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 1450 sec [ 1516.833312] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 1510 sec [ 1577.249311] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 1570 sec [ 1637.665299] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 1631 sec [ 1698.081302] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 1691 sec [ 1758.497300] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 1752 sec [ 1818.913304] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 1812 sec [ 1879.329304] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 1872 sec [ 1939.745307] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 1933 sec [ 2000.161308] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 1993 sec [ 2060.577307] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 2054 sec [ 2120.993317] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 2114 sec [ 2181.409294] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 2175 sec [ 2241.825308] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 2235 sec [ 2302.241312] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 2295 sec [ 2362.657303] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 2356 sec [ 2423.073303] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 2416 sec [ 2483.489309] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 2477 sec [ 2543.905313] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 2537 sec [ 2604.321311] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 2597 sec [ 2664.737302] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 2658 sec [ 2725.153302] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 2718 sec [ 2785.569302] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 2779 sec [ 2845.985308] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 2839 sec [ 2906.401308] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 2899 sec [ 2966.817300] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 2960 sec [ 3027.233305] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 3020 sec [ 3087.649301] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 3081 sec [ 3148.065307] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 3141 sec [ 3208.481301] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 3202 sec [ 3268.897313] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 3262 sec [ 3329.313302] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 3322 sec [ 3389.729301] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 3383 sec [ 3450.145302] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 3443 sec [ 3510.561309] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 3504 sec [ 3570.977304] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 3564 sec [ 3631.393306] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 3624 sec [ 3691.809292] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 3685 sec [ 3752.225306] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 3745 sec [ 3812.641315] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 3806 sec [ 3873.057305] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 3866 sec [ 3933.473302] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 3927 sec [ 3993.889303] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 3987 sec [ 4054.305309] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 4047 sec [ 4114.721299] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 4108 sec [ 4175.137300] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 4168 sec [ 4235.553307] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 4229 sec [ 4295.969308] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 4289 sec [ 4356.385299] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 4349 sec [ 4416.801302] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 4410 sec [ 4477.217303] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 4470 sec [ 4537.633302] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 4531 sec [ 4598.049315] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 4591 sec [ 4658.465301] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 4652 sec [ 4718.881309] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 4712 sec [ 4779.297302] page_pool_release_retry() stalled pool shutdown: id 5, 1 inflight 4772 sec HARD STOP (4800) WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr