[ 8.817177] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 8.817246] #PF: supervisor write access in kernel mode [ 8.817289] #PF: error_code(0x0002) - not-present page [ 8.817322] PGD 2f0f067 P4D 2f0f067 PUD 5290067 PMD 0 [ 8.817360] Oops: Oops: 0002 [#1] SMP [ 8.817386] CPU: 3 UID: 0 PID: 806 Comm: ip Not tainted 6.18.0-rc5-virtme #1 PREEMPT(voluntary) [ 8.817447] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 8.817490] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 8.817532] 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 [ 8.817662] RSP: 0018:ffffbeea404df610 EFLAGS: 00010046 [ 8.817701] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000000 [ 8.817750] RDX: ffffbeea404df648 RSI: 0000000000000000 RDI: 0000000000000000 [ 8.817805] RBP: ffffbeea404df648 R08: ffffffffa9e6d160 R09: 0000000000000101 [ 8.817854] R10: ffffffffaa6080d8 R11: ffffbeea4013cff8 R12: 0000000000000000 [ 8.817903] R13: ffffbeea404df740 R14: 0000000000000020 R15: 00000000ffffffff [ 8.817953] FS: 00007fa208dab800(0000) GS:ffffa00bd3f58000(0000) knlGS:0000000000000000 [ 8.818006] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 8.818052] CR2: 0000000000000000 CR3: 0000000001b16001 CR4: 0000000000772ef0 [ 8.818107] PKRU: 55555554 [ 8.818122] Call Trace: [ 8.818140] [ 8.818164] __cancel_work+0x29/0xe0 [ 8.818192] ? queue_delayed_work_on+0x54/0x60 [ 8.818230] __cancel_work_sync+0x16/0x80 [ 8.818262] __dev_close_many+0x11b/0x280 [ 8.818293] netif_close_many+0x98/0x160 [ 8.818324] unregister_netdevice_many_notify+0x1d8/0xa50 [ 8.818362] ? unregister_netdevice_queue+0x29/0xe0 [ 8.818394] rtnl_dellink+0x156/0x350 [ 8.818426] ? virtio_fs_enqueue_req+0x352/0x570 [ 8.818464] ? netdev_run_todo+0x63/0x550 [ 8.818495] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 8.818527] rtnetlink_rcv_msg+0x358/0x400 [ 8.818553] ? get_page_from_freelist+0x15b4/0x1770 [ 8.818595] ? rtnl_calcit.isra.0+0x110/0x110 [ 8.818631] netlink_rcv_skb+0x57/0x100 [ 8.818673] netlink_unicast+0x252/0x380 [ 8.818702] ? __alloc_skb+0xfc/0x1e0 [ 8.818733] netlink_sendmsg+0x1be/0x3e0 [ 8.818763] ____sys_sendmsg+0x132/0x260 [ 8.818794] ? copy_msghdr_from_user+0x6c/0xa0 [ 8.818832] ___sys_sendmsg+0x87/0xd0 [ 8.818858] ? do_wp_page+0x369/0xe90 [ 8.818887] ? ___pte_offset_map+0x1b/0xd0 [ 8.818919] ? fsnotify_grab_connector+0x48/0x80 [ 8.818959] ? fsnotify_destroy_marks+0x29/0x150 [ 8.818996] __sys_sendmsg+0x71/0xd0 [ 8.819027] do_syscall_64+0xa4/0xfd0 [ 8.819057] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 8.819094] RIP: 0033:0x7fa208f791d7 [ 8.819123] 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 [ 8.819238] RSP: 002b:00007ffe849fa098 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 8.819293] RAX: ffffffffffffffda RBX: 00007ffe849fa7c0 RCX: 00007fa208f791d7 [ 8.819342] RDX: 0000000000000000 RSI: 00007ffe849fa100 RDI: 0000000000000005 [ 8.819390] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 8.819438] R10: 00007fa208e75f60 R11: 0000000000000246 R12: 0000000000000001 [ 8.819487] R13: 00000000691cb75e R14: 0000000000499600 R15: 0000000000000000 [ 8.819537] [ 8.819552] Modules linked in: veth nf_tables [ 8.819595] CR2: 0000000000000000 [ 8.819622] ---[ end trace 0000000000000000 ]--- [ 8.819654] RIP: 0010:work_grab_pending+0x2f/0x1b0 [ 8.819692] 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 [ 8.819808] RSP: 0018:ffffbeea404df610 EFLAGS: 00010046 [ 8.819843] RAX: 0000000000000246 RBX: 0000000000000000 RCX: 0000000000000000 [ 8.819892] RDX: ffffbeea404df648 RSI: 0000000000000000 RDI: 0000000000000000 [ 8.819941] RBP: ffffbeea404df648 R08: ffffffffa9e6d160 R09: 0000000000000101 [ 8.819989] R10: ffffffffaa6080d8 R11: ffffbeea4013cff8 R12: 0000000000000000 [ 8.820037] R13: ffffbeea404df740 R14: 0000000000000020 R15: 00000000ffffffff [ 8.820086] FS: 00007fa208dab800(0000) GS:ffffa00bd3f58000(0000) knlGS:0000000000000000 [ 8.820141] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 8.820187] CR2: 0000000000000000 CR3: 0000000001b16001 CR4: 0000000000772ef0 [ 8.820238] PKRU: 55555554 [ 8.820259] note: ip[806] exited with irqs disabled [ 8.820387] ip (806) used greatest stack depth: 11432 bytes left WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr WAIT TIMEOUT stderr