[ 2.954507] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 2.954609] #PF: supervisor write access in kernel mode [ 2.954654] #PF: error_code(0x0002) - not-present page [ 2.954703] PGD 0 P4D 0 [ 2.954729] Oops: Oops: 0002 [#1] SMP [ 2.954768] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) [ 2.954864] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.954927] Workqueue: netns cleanup_net [ 2.954973] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 2.955032] 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 [ 2.955212] RSP: 0018:ffffb96d40067bb8 EFLAGS: 00010046 [ 2.955264] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 00000000ffffffff [ 2.955339] RDX: ffffb96d40067bf0 RSI: 0000000000000000 RDI: 0000000000000000 [ 2.955418] RBP: ffffb96d40067bf0 R08: ffffffff96293e00 R09: 0000000000000101 [ 2.955493] R10: ffffffff96e080d8 R11: ffffb96d40003ff8 R12: 0000000000000000 [ 2.955570] R13: ffffb96d40067ce8 R14: 0000000000000020 R15: ffffb96d40067df0 [ 2.955646] FS: 0000000000000000(0000) GS:ffff994da7591000(0000) knlGS:0000000000000000 [ 2.955724] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.955784] CR2: 0000000000000000 CR3: 0000000033646006 CR4: 0000000000772ef0 [ 2.955861] PKRU: 55555554 [ 2.955885] Call Trace: [ 2.955911] [ 2.955935] __cancel_work+0x29/0xe0 [ 2.955978] ? dev_deactivate_many+0x2c9/0x300 [ 2.956028] __cancel_work_sync+0x16/0x80 [ 2.956065] __dev_close_many+0x113/0x2b0 [ 2.956100] netif_close_many+0x98/0x160 [ 2.956144] unregister_netdevice_many_notify+0x1ea/0xaa0 [ 2.956192] default_device_exit_batch+0x29b/0x300 [ 2.956238] ? mutex_lock+0x12/0x30 [ 2.956275] ops_undo_list+0xec/0x1f0 [ 2.956313] cleanup_net+0x1b7/0x300 [ 2.956349] process_one_work+0x162/0x380 [ 2.956386] worker_thread+0x299/0x3c0 [ 2.956422] ? rescuer_thread+0x4c0/0x4c0 [ 2.956460] kthread+0x101/0x1f0 [ 2.956497] ? kthreads_online_cpu+0x110/0x110 [ 2.956544] ? kthreads_online_cpu+0x110/0x110 [ 2.956593] ret_from_fork+0x11c/0x140 [ 2.956629] ? kthreads_online_cpu+0x110/0x110 [ 2.956681] ret_from_fork_asm+0x11/0x20 [ 2.956719] [ 2.956741] Modules linked in: [ 2.956781] CR2: 0000000000000000 [ 2.956819] ---[ end trace 0000000000000000 ]--- [ 2.956869] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 2.956920] 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 [ 2.957096] RSP: 0018:ffffb96d40067bb8 EFLAGS: 00010046 [ 2.957146] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 00000000ffffffff [ 2.957222] RDX: ffffb96d40067bf0 RSI: 0000000000000000 RDI: 0000000000000000 [ 2.957297] RBP: ffffb96d40067bf0 R08: ffffffff96293e00 R09: 0000000000000101 [ 2.957372] R10: ffffffff96e080d8 R11: ffffb96d40003ff8 R12: 0000000000000000 [ 2.957448] R13: ffffb96d40067ce8 R14: 0000000000000020 R15: ffffb96d40067df0 [ 2.957523] FS: 0000000000000000(0000) GS:ffff994da7591000(0000) knlGS:0000000000000000 [ 2.957599] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.957661] CR2: 0000000000000000 CR3: 0000000033646006 CR4: 0000000000772ef0 [ 2.957739] PKRU: 55555554 [ 2.957763] note: kworker/u16:0[12] exited with irqs disabled WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr WAIT TIMEOUT stderr