[ 1.965021] ip (252) used greatest stack depth: 12456 bytes left [ 6.261594] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 6.261688] #PF: supervisor write access in kernel mode [ 6.261737] #PF: error_code(0x0002) - not-present page [ 6.261794] PGD 20cd067 P4D 20cd067 PUD 442f067 PMD 0 [ 6.261852] Oops: Oops: 0002 [#1] SMP [ 6.261892] CPU: 0 UID: 0 PID: 273 Comm: ip Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) [ 6.261978] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 6.262041] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 6.262100] 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 [ 6.262279] RSP: 0018:ffff9d04c03ab610 EFLAGS: 00010046 [ 6.262328] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000c00 [ 6.262403] RDX: ffff9d04c03ab648 RSI: 0000000000000000 RDI: 0000000000000000 [ 6.262481] RBP: ffff9d04c03ab648 R08: ffff8c6a0139b673 R09: 0000000000000002 [ 6.262560] R10: ffff8c6a3ec28840 R11: ffff8c6a0139ae90 R12: 0000000000000000 [ 6.262638] R13: ffff9d04c03ab740 R14: 0000000000000020 R15: 00000000ffffffff [ 6.262718] FS: 00007f4f802df800(0000) GS:ffff8c6a82b91000(0000) knlGS:0000000000000000 [ 6.262801] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 6.262865] CR2: 0000000000000000 CR3: 00000000020b9006 CR4: 0000000000772ef0 [ 6.262943] PKRU: 55555554 [ 6.262969] Call Trace: [ 6.262994] [ 6.263020] __cancel_work+0x29/0xe0 [ 6.263063] ? queue_delayed_work_on+0x54/0x60 [ 6.263115] __cancel_work_sync+0x16/0x80 [ 6.263155] __dev_close_many+0x113/0x2b0 [ 6.263203] netif_close_many+0x98/0x160 [ 6.263241] unregister_netdevice_many_notify+0x1ea/0xaa0 [ 6.263294] ? unregister_netdevice_queue+0x29/0xe0 [ 6.263346] rtnl_dellink+0x156/0x350 [ 6.263392] ? virtio_fs_enqueue_req+0x352/0x570 [ 6.263447] ? netdev_run_todo+0x63/0x550 [ 6.263484] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 6.263534] rtnetlink_rcv_msg+0x358/0x400 [ 6.263573] ? get_page_from_freelist+0x15b4/0x1770 [ 6.263627] ? rtnl_calcit.isra.0+0x110/0x110 [ 6.263680] netlink_rcv_skb+0x57/0x100 [ 6.263720] netlink_unicast+0x252/0x380 [ 6.263758] ? __alloc_skb+0xfc/0x1e0 [ 6.263797] netlink_sendmsg+0x1be/0x3e0 [ 6.263836] ____sys_sendmsg+0x132/0x260 [ 6.263873] ? copy_msghdr_from_user+0x6c/0xa0 [ 6.263925] ___sys_sendmsg+0x87/0xd0 [ 6.263965] ? do_wp_page+0x369/0xe90 [ 6.264005] ? ___pte_offset_map+0x1b/0xd0 [ 6.264045] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 6.264097] ? fsnotify_grab_connector+0x48/0x80 [ 6.264149] ? fsnotify_destroy_marks+0x29/0x150 [ 6.264201] __sys_sendmsg+0x71/0xd0 [ 6.264239] do_syscall_64+0xa4/0xfd0 [ 6.264283] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 6.264335] RIP: 0033:0x7f4f804ad1d7 [ 6.264371] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 [ 6.264546] RSP: 002b:00007fffa9e02b48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 6.264624] RAX: ffffffffffffffda RBX: 00007fffa9e03270 RCX: 00007f4f804ad1d7 [ 6.264702] RDX: 0000000000000000 RSI: 00007fffa9e02bb0 RDI: 0000000000000005 [ 6.264778] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 6.264855] R10: 00007f4f803a9f60 R11: 0000000000000246 R12: 0000000000000001 [ 6.264933] R13: 00000000691cc6f4 R14: 0000000000499600 R15: 0000000000000000 [ 6.265011] [ 6.265037] Modules linked in: [ 6.265075] CR2: 0000000000000000 [ 6.265114] ---[ end trace 0000000000000000 ]--- [ 6.265165] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 6.265215] 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 [ 6.265394] RSP: 0018:ffff9d04c03ab610 EFLAGS: 00010046 [ 6.265446] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000c00 [ 6.265526] RDX: ffff9d04c03ab648 RSI: 0000000000000000 RDI: 0000000000000000 [ 6.265602] RBP: ffff9d04c03ab648 R08: ffff8c6a0139b673 R09: 0000000000000002 [ 6.265680] R10: ffff8c6a3ec28840 R11: ffff8c6a0139ae90 R12: 0000000000000000 [ 6.265755] R13: ffff9d04c03ab740 R14: 0000000000000020 R15: 00000000ffffffff [ 6.265834] FS: 00007f4f802df800(0000) GS:ffff8c6a82b91000(0000) knlGS:0000000000000000 [ 6.265910] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 6.265974] CR2: 0000000000000000 CR3: 00000000020b9006 CR4: 0000000000772ef0 [ 6.266051] PKRU: 55555554 [ 6.266077] note: ip[273] exited with irqs disabled [ 6.266281] ip (273) used greatest stack depth: 11432 bytes left WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr WAIT TIMEOUT stderr