[ 5.833161] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 5.833236] #PF: supervisor write access in kernel mode [ 5.833279] #PF: error_code(0x0002) - not-present page [ 5.833323] PGD 0 P4D 0 [ 5.833346] Oops: Oops: 0002 [#1] SMP [ 5.833380] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) [ 5.833464] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 5.833520] Workqueue: netns cleanup_net [ 5.833567] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 5.833626] 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 [ 5.833782] RSP: 0000:ffffc0a8c0067bb8 EFLAGS: 00010046 [ 5.833826] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 00000000ffffffff [ 5.833894] RDX: ffffc0a8c0067bf0 RSI: 0000000000000000 RDI: 0000000000000000 [ 5.833961] RBP: ffffc0a8c0067bf0 R08: ffffffff89293e00 R09: 0000000000000101 [ 5.834027] R10: ffffffff89e080d8 R11: ffffc0a8c0003ff8 R12: 0000000000000000 [ 5.834094] R13: ffffc0a8c0067ce8 R14: 0000000000000020 R15: ffffc0a8c0067df0 [ 5.834163] FS: 0000000000000000(0000) GS:ffff9d12b4591000(0000) knlGS:0000000000000000 [ 5.834236] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 5.834291] CR2: 0000000000000000 CR3: 0000000004aee003 CR4: 0000000000772ef0 [ 5.834359] PKRU: 55555554 [ 5.834380] Call Trace: [ 5.834405] [ 5.834434] __cancel_work+0x29/0xe0 [ 5.834482] ? dev_deactivate_many+0x2c9/0x300 [ 5.834534] __cancel_work_sync+0x16/0x80 [ 5.834570] __dev_close_many+0x113/0x2b0 [ 5.834618] netif_close_many+0x98/0x160 [ 5.834657] unregister_netdevice_many_notify+0x10c/0xaa0 [ 5.834702] ? unregister_netdevice_queue+0x29/0xe0 [ 5.834745] default_device_exit_batch+0x29b/0x300 [ 5.834791] ? mutex_lock+0x12/0x30 [ 5.834831] ops_undo_list+0xec/0x1f0 [ 5.834874] cleanup_net+0x1b7/0x300 [ 5.834916] process_one_work+0x162/0x380 [ 5.834957] worker_thread+0x299/0x3c0 [ 5.834996] ? rescuer_thread+0x4c0/0x4c0 [ 5.835029] kthread+0x101/0x1f0 [ 5.835070] ? kthreads_online_cpu+0x110/0x110 [ 5.835115] ? kthreads_online_cpu+0x110/0x110 [ 5.835160] ret_from_fork+0x11c/0x140 [ 5.835200] ? kthreads_online_cpu+0x110/0x110 [ 5.835243] ret_from_fork_asm+0x11/0x20 [ 5.835285] [ 5.835312] Modules linked in: [ 5.835346] CR2: 0000000000000000 [ 5.835379] ---[ end trace 0000000000000000 ]--- [ 5.835422] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 5.835468] 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 [ 5.835632] RSP: 0000:ffffc0a8c0067bb8 EFLAGS: 00010046 [ 5.835676] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 00000000ffffffff [ 5.835742] RDX: ffffc0a8c0067bf0 RSI: 0000000000000000 RDI: 0000000000000000 [ 5.835809] RBP: ffffc0a8c0067bf0 R08: ffffffff89293e00 R09: 0000000000000101 [ 5.835879] R10: ffffffff89e080d8 R11: ffffc0a8c0003ff8 R12: 0000000000000000 [ 5.835945] R13: ffffc0a8c0067ce8 R14: 0000000000000020 R15: ffffc0a8c0067df0 [ 5.836014] FS: 0000000000000000(0000) GS:ffff9d12b4591000(0000) knlGS:0000000000000000 [ 5.836088] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 5.836141] CR2: 0000000000000000 CR3: 0000000004aee003 CR4: 0000000000772ef0 [ 5.836209] PKRU: 55555554 [ 5.836231] note: kworker/u16:0[12] exited with irqs disabled WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr WAIT TIMEOUT stderr