[ 2.051685] ip (260) used greatest stack depth: 12168 bytes left [ 2.381782] tc (284) used greatest stack depth: 11840 bytes left [ 15.144170] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 15.144236] #PF: supervisor write access in kernel mode [ 15.144272] #PF: error_code(0x0002) - not-present page [ 15.144303] PGD 80f7067 P4D 80f7067 PUD 7da1067 PMD 0 [ 15.144342] Oops: Oops: 0002 [#1] SMP [ 15.144377] CPU: 3 UID: 0 PID: 485 Comm: ip Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) [ 15.144444] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.144485] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 15.144531] 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 [ 15.144646] RSP: 0018:ffff9ad280a9b610 EFLAGS: 00010046 [ 15.144684] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000080100007 [ 15.144741] RDX: ffff9ad280a9b648 RSI: 0000000000000000 RDI: 0000000000000000 [ 15.144788] RBP: ffff9ad280a9b648 R08: 0000000000000001 R09: ffffffffb0d56300 [ 15.144834] R10: ffff898187013800 R11: 0000000000000001 R12: 0000000000000000 [ 15.144889] R13: ffff9ad280a9b740 R14: 0000000000000020 R15: 00000000ffffffff [ 15.144944] FS: 00007f13350e8800(0000) GS:ffff89820cb11000(0000) knlGS:0000000000000000 [ 15.144997] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 15.145042] CR2: 0000000000000000 CR3: 00000000080f1001 CR4: 0000000000772ef0 [ 15.145091] PKRU: 55555554 [ 15.145112] Call Trace: [ 15.145132] [ 15.145152] __cancel_work+0x29/0xe0 [ 15.145181] __cancel_work_sync+0x16/0x80 [ 15.145212] __dev_close_many+0x113/0x2b0 [ 15.145250] netif_close_many+0x98/0x160 [ 15.145280] unregister_netdevice_many_notify+0x1ea/0xaa0 [ 15.145319] ? unregister_netdevice_queue+0x29/0xe0 [ 15.145357] rtnl_dellink+0x156/0x350 [ 15.145389] ? virtio_fs_enqueue_req+0x352/0x570 [ 15.145443] ? netdev_run_todo+0x63/0x550 [ 15.145481] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 15.145517] rtnetlink_rcv_msg+0x358/0x400 [ 15.145549] ? get_page_from_freelist+0x15b4/0x1770 [ 15.145592] ? rtnl_calcit.isra.0+0x110/0x110 [ 15.145626] netlink_rcv_skb+0x57/0x100 [ 15.145657] netlink_unicast+0x252/0x380 [ 15.145685] ? __alloc_skb+0xfc/0x1e0 [ 15.145718] netlink_sendmsg+0x1be/0x3e0 [ 15.145747] ____sys_sendmsg+0x132/0x260 [ 15.145781] ? copy_msghdr_from_user+0x6c/0xa0 [ 15.145820] ___sys_sendmsg+0x87/0xd0 [ 15.145850] ? do_wp_page+0x369/0xe90 [ 15.145880] ? ___pte_offset_map+0x1b/0xd0 [ 15.145917] ? fsnotify_grab_connector+0x48/0x80 [ 15.145957] ? fsnotify_destroy_marks+0x29/0x150 [ 15.145999] __sys_sendmsg+0x71/0xd0 [ 15.146029] do_syscall_64+0xa4/0xfd0 [ 15.146065] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.146104] RIP: 0033:0x7f13352b61d7 [ 15.146135] 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 [ 15.146257] RSP: 002b:00007ffe4c6e7d48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 15.146310] RAX: ffffffffffffffda RBX: 00007ffe4c6e8480 RCX: 00007f13352b61d7 [ 15.146357] RDX: 0000000000000000 RSI: 00007ffe4c6e7db0 RDI: 0000000000000005 [ 15.146403] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 15.146465] R10: 00007f13351b2510 R11: 0000000000000246 R12: 0000000000000001 [ 15.146511] R13: 00000000691cc3fc R14: 0000000000499600 R15: 0000000000000000 [ 15.146558] [ 15.146578] Modules linked in: xt_length nft_compat nf_tables act_ct nf_flow_table nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 cls_flower sch_ingress [ 15.146677] CR2: 0000000000000000 [ 15.146707] ---[ end trace 0000000000000000 ]--- [ 15.146737] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 15.146776] 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 [ 15.146886] RSP: 0018:ffff9ad280a9b610 EFLAGS: 00010046 [ 15.146924] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000080100007 [ 15.146970] RDX: ffff9ad280a9b648 RSI: 0000000000000000 RDI: 0000000000000000 [ 15.147016] RBP: ffff9ad280a9b648 R08: 0000000000000001 R09: ffffffffb0d56300 [ 15.147063] R10: ffff898187013800 R11: 0000000000000001 R12: 0000000000000000 [ 15.147116] R13: ffff9ad280a9b740 R14: 0000000000000020 R15: 00000000ffffffff [ 15.147163] FS: 00007f13350e8800(0000) GS:ffff89820cb11000(0000) knlGS:0000000000000000 [ 15.147215] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 15.147259] CR2: 0000000000000000 CR3: 00000000080f1001 CR4: 0000000000772ef0 [ 15.147306] PKRU: 55555554 [ 15.147326] note: ip[485] exited with irqs disabled [ 15.147522] ip (485) used greatest stack depth: 11432 bytes left WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr WAIT TIMEOUT stderr