[ 2.299420] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 2.387899] bond0: (slave bond_slave_1): Releasing backup interface [ 2.421750] ------------[ cut here ]------------ [ 2.421840] refcount_t: underflow; use-after-free. [ 2.421902] WARNING: CPU: 0 PID: 263 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.421993] Modules linked in: bonding [ 2.422034] CPU: 0 UID: 0 PID: 263 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.422126] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.422190] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.422249] Code: 9e e8 e8 54 ba ff 90 0f 0b 90 90 c3 80 3d 00 e6 2b 01 00 75 89 c6 05 f7 e5 2b 01 01 90 48 c7 c7 f8 48 d5 9e e8 c5 54 ba ff 90 <0f> 0b 90 90 c3 80 3d db e5 2b 01 00 0f 85 62 ff ff ff c6 05 ce e5 [ 2.422431] RSP: 0018:ffffb904c02d3730 EFLAGS: 00010282 [ 2.422482] RAX: 0000000000000000 RBX: ffffb904c02d3740 RCX: 00000000ffffdfff [ 2.422559] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.422636] RBP: ffffb904c02d3238 R08: ffffffff9f55ba28 R09: 00000000ffffdfff [ 2.422718] R10: ffffffff9f47ba40 R11: ffffffff9f52ba40 R12: dead000000000122 [ 2.422804] R13: 00000000fffb7515 R14: 0000000000000001 R15: ffff8eb306c28000 [ 2.422884] FS: 00007fa2d4af2800(0000) GS:ffff8eb39ef91000(0000) knlGS:0000000000000000 [ 2.422962] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.423026] CR2: 00000000004e5af0 CR3: 000000000311f005 CR4: 0000000000772ef0 [ 2.423107] PKRU: 55555554 [ 2.423131] Call Trace: [ 2.423159] [ 2.423183] netdev_run_todo+0x21a/0x550 [ 2.423225] rtnl_dellink+0x15b/0x350 [ 2.423272] ? virtio_fs_enqueue_req+0x352/0x570 [ 2.423330] ? netdev_run_todo+0x63/0x550 [ 2.423370] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 2.423421] rtnetlink_rcv_msg+0x358/0x400 [ 2.423460] ? get_page_from_freelist+0x15b4/0x1770 [ 2.423517] ? rtnl_calcit.isra.0+0x110/0x110 [ 2.423569] netlink_rcv_skb+0x57/0x100 [ 2.423616] netlink_unicast+0x252/0x380 [ 2.423654] ? __alloc_skb+0xdb/0x190 [ 2.423698] netlink_sendmsg+0x1be/0x3e0 [ 2.423740] ____sys_sendmsg+0x132/0x260 [ 2.423786] ? copy_msghdr_from_user+0x6c/0xa0 [ 2.423838] ___sys_sendmsg+0x87/0xd0 [ 2.423880] ? do_wp_page+0x369/0xe90 [ 2.423917] ? ___pte_offset_map+0x1b/0xd0 [ 2.423957] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 2.424017] ? fsnotify_grab_connector+0x48/0x80 [ 2.424076] ? fsnotify_destroy_marks+0x29/0x150 [ 2.424130] __sys_sendmsg+0x71/0xd0 [ 2.424169] do_syscall_64+0xa4/0xfd0 [ 2.424217] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 2.424274] RIP: 0033:0x7fa2d4cc01d7 [ 2.424311] 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 [ 2.424489] RSP: 002b:00007ffec4bf96e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 2.424566] RAX: ffffffffffffffda RBX: 00007ffec4bf9e10 RCX: 00007fa2d4cc01d7 [ 2.424647] RDX: 0000000000000000 RSI: 00007ffec4bf9750 RDI: 0000000000000005 [ 2.424729] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 2.424808] R10: 00007fa2d4bbcf60 R11: 0000000000000246 R12: 0000000000000001 [ 2.424887] R13: 00000000690deb9a R14: 0000000000499600 R15: 0000000000000000 [ 2.424964] [ 2.424990] ---[ end trace 0000000000000000 ]--- [ 2.425636] ip (263) used greatest stack depth: 11744 bytes left [ 2.436022] bond0 (unregistering): Released all slaves [ 2.585991] 8021q: adding VLAN 0 to HW filter on device bond0 [ 2.629125] bond0 (unregistering): Released all slaves [ 2.796875] 8021q: adding VLAN 0 to HW filter on device bond0 [ 2.843691] bond0 (unregistering): Released all slaves [ 3.029799] bond0 (unregistering): Released all slaves [ 3.064737] 8021q: adding VLAN 0 to HW filter on device bond0 [ 3.104157] bond0 (unregistering): Released all slaves