[ 4.205600] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 4.205661] #PF: supervisor write access in kernel mode [ 4.205699] #PF: error_code(0x0002) - not-present page [ 4.205737] PGD 30da067 P4D 30da067 PUD 3154067 PMD 0 [ 4.205776] Oops: Oops: 0002 [#1] SMP [ 4.205807] CPU: 3 UID: 0 PID: 319 Comm: ip Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) [ 4.205866] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 4.205904] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 4.205955] 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 [ 4.206086] RSP: 0018:ffffab42c0737610 EFLAGS: 00010046 [ 4.206123] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000001388 [ 4.206170] RDX: ffffab42c0737648 RSI: 0000000000000000 RDI: 0000000000000000 [ 4.206217] RBP: ffffab42c0737648 R08: ffff9372031e9a70 R09: ffff93723eda4d60 [ 4.206271] R10: ffff93723eda4d78 R11: 000000c1000000c1 R12: 0000000000000000 [ 4.206319] R13: ffffab42c0737740 R14: 0000000000000020 R15: 00000000ffffffff [ 4.206368] FS: 00007f0e658d2800(0000) GS:ffff937282311000(0000) knlGS:0000000000000000 [ 4.206420] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 4.206464] CR2: 0000000000000000 CR3: 0000000002ff9003 CR4: 0000000000772ef0 [ 4.206514] PKRU: 55555554 [ 4.206535] Call Trace: [ 4.206552] [ 4.206573] __cancel_work+0x29/0xe0 [ 4.206600] __cancel_work_sync+0x16/0x80 [ 4.206630] __dev_close_many+0x113/0x2b0 [ 4.206664] netif_close_many+0x98/0x160 [ 4.206694] ? kernfs_unlink_sibling+0x86/0xa0 [ 4.206734] unregister_netdevice_many_notify+0x1ea/0xaa0 [ 4.206771] rtnl_dellink+0x156/0x350 [ 4.206806] ? virtio_fs_enqueue_req+0x352/0x570 [ 4.206845] ? netdev_run_todo+0x63/0x550 [ 4.206874] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 4.206910] rtnetlink_rcv_msg+0x358/0x400 [ 4.206943] ? get_page_from_freelist+0x15b4/0x1770 [ 4.206975] ? rtnl_calcit.isra.0+0x110/0x110 [ 4.207011] netlink_rcv_skb+0x57/0x100 [ 4.207043] netlink_unicast+0x252/0x380 [ 4.207074] ? __alloc_skb+0xfc/0x1e0 [ 4.207113] netlink_sendmsg+0x1be/0x3e0 [ 4.207143] ____sys_sendmsg+0x132/0x260 [ 4.207173] ? copy_msghdr_from_user+0x6c/0xa0 [ 4.207210] ___sys_sendmsg+0x87/0xd0 [ 4.207249] ? do_wp_page+0x369/0xe90 [ 4.207284] ? ___pte_offset_map+0x1b/0xd0 [ 4.207315] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 4.207353] ? fsnotify_grab_connector+0x48/0x80 [ 4.207389] ? fsnotify_destroy_marks+0x29/0x150 [ 4.207426] __sys_sendmsg+0x71/0xd0 [ 4.207456] do_syscall_64+0xa4/0xfd0 [ 4.207490] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 4.207528] RIP: 0033:0x7f0e65aa01d7 [ 4.207557] 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 [ 4.207671] RSP: 002b:00007ffcc8325f38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 4.207724] RAX: ffffffffffffffda RBX: 00007ffcc8326660 RCX: 00007f0e65aa01d7 [ 4.207771] RDX: 0000000000000000 RSI: 00007ffcc8325fa0 RDI: 0000000000000005 [ 4.207818] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 4.207866] R10: 00007f0e6599cf60 R11: 0000000000000246 R12: 0000000000000002 [ 4.207913] R13: 00000000691cc56a R14: 0000000000499600 R15: 0000000000000000 [ 4.207975] [ 4.207996] Modules linked in: [ 4.208021] CR2: 0000000000000000 [ 4.208048] ---[ end trace 0000000000000000 ]--- [ 4.208086] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 4.208140] 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 [ 4.208264] RSP: 0018:ffffab42c0737610 EFLAGS: 00010046 [ 4.208299] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000001388 [ 4.208349] RDX: ffffab42c0737648 RSI: 0000000000000000 RDI: 0000000000000000 [ 4.208395] RBP: ffffab42c0737648 R08: ffff9372031e9a70 R09: ffff93723eda4d60 [ 4.208445] R10: ffff93723eda4d78 R11: 000000c1000000c1 R12: 0000000000000000 [ 4.208493] R13: ffffab42c0737740 R14: 0000000000000020 R15: 00000000ffffffff [ 4.208549] FS: 00007f0e658d2800(0000) GS:ffff937282311000(0000) knlGS:0000000000000000 [ 4.208602] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 4.208646] CR2: 0000000000000000 CR3: 0000000002ff9003 CR4: 0000000000772ef0 [ 4.208695] PKRU: 55555554 [ 4.208715] note: ip[319] exited with irqs disabled [ 4.208876] ip (319) used greatest stack depth: 11432 bytes left WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr WAIT TIMEOUT stderr