[ 2.051614] ip (254) used greatest stack depth: 12360 bytes left [ 7.265486] veth1: entered promiscuous mode [ 7.290739] veth1: left promiscuous mode [ 7.300617] ------------[ cut here ]------------ [ 7.300751] refcount_t: underflow; use-after-free. [ 7.300822] WARNING: CPU: 0 PID: 293 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 7.300918] Modules linked in: macvlan veth [ 7.300965] CPU: 0 UID: 0 PID: 293 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 7.301058] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 7.301130] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 7.301182] Code: b9 e8 18 df ba ff 90 0f 0b 90 90 c3 80 3d f9 da eb 00 00 75 89 c6 05 f0 da eb 00 01 90 48 c7 c7 28 e0 d1 b9 e8 f5 de ba ff 90 <0f> 0b 90 90 c3 80 3d d4 da eb 00 00 0f 85 62 ff ff ff c6 05 c7 da [ 7.301357] RSP: 0018:ffffb64f802a3730 EFLAGS: 00010282 [ 7.301416] RAX: 0000000000000000 RBX: ffffb64f802a3740 RCX: 00000000ffffdfff [ 7.301494] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 7.301576] RBP: ffffb64f802a3248 R08: ffffffffba156a28 R09: 00000000ffffdfff [ 7.301660] R10: ffffffffba076a40 R11: ffffffffba126a40 R12: dead000000000122 [ 7.301736] R13: 00000000fffb8824 R14: 0000000000000001 R15: ffffa0eec31c3000 [ 7.301818] FS: 00007f946da1e800(0000) GS:ffffa0ef443d9000(0000) knlGS:0000000000000000 [ 7.301902] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 7.301970] CR2: 00007fb91dff65f0 CR3: 0000000004eef001 CR4: 0000000000772ef0 [ 7.302050] PKRU: 55555554 [ 7.302075] Call Trace: [ 7.302104] [ 7.302134] netdev_run_todo+0x21a/0x550 [ 7.302192] rtnl_dellink+0x15b/0x350 [ 7.302247] ? virtio_fs_enqueue_req+0x352/0x570 [ 7.302309] ? netdev_run_todo+0x63/0x550 [ 7.302353] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 7.302406] rtnetlink_rcv_msg+0x358/0x400 [ 7.302446] ? get_page_from_freelist+0x15b4/0x1770 [ 7.302499] ? rtnl_calcit.isra.0+0x110/0x110 [ 7.302555] netlink_rcv_skb+0x57/0x100 [ 7.302611] netlink_unicast+0x252/0x380 [ 7.302654] ? __alloc_skb+0xdb/0x190 [ 7.302699] netlink_sendmsg+0x1be/0x3e0 [ 7.302740] ____sys_sendmsg+0x132/0x260 [ 7.302783] ? copy_msghdr_from_user+0x6c/0xa0 [ 7.302841] ___sys_sendmsg+0x87/0xd0 [ 7.302887] ? do_wp_page+0x369/0xe90 [ 7.302933] ? ___pte_offset_map+0x1b/0xd0 [ 7.302980] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 7.303037] ? fsnotify_grab_connector+0x48/0x80 [ 7.303094] ? fsnotify_destroy_marks+0x29/0x150 [ 7.303146] __sys_sendmsg+0x71/0xd0 [ 7.303192] do_syscall_64+0xa4/0xfd0 [ 7.303237] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 7.303293] RIP: 0033:0x7f946dbec1d7 [ 7.303339] 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 [ 7.303523] RSP: 002b:00007ffcc51ef5b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 7.303606] RAX: ffffffffffffffda RBX: 00007ffcc51efce0 RCX: 00007f946dbec1d7 [ 7.303692] RDX: 0000000000000000 RSI: 00007ffcc51ef620 RDI: 0000000000000005 [ 7.303769] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 7.303850] R10: 00007f946dae8f60 R11: 0000000000000246 R12: 0000000000000001 [ 7.303926] R13: 00000000690de96a R14: 0000000000499600 R15: 0000000000000000 [ 7.304005] [ 7.304034] ---[ end trace 0000000000000000 ]--- [ 7.304787] ip (293) used greatest stack depth: 11744 bytes left [ 7.550586] veth1: entered promiscuous mode [ 31.311444] veth1: entered allmulticast mode [ 36.474295] veth1: left allmulticast mode [ 43.900148] veth1: left promiscuous mode [ 44.353884] br0: port 1(veth1) entered blocking state [ 44.353953] br0: port 1(veth1) entered disabled state [ 44.354018] veth1: entered allmulticast mode [ 44.354118] veth1: entered promiscuous mode [ 44.367123] br0: port 1(veth1) entered blocking state [ 44.367258] br0: port 1(veth1) entered forwarding state [ 44.432819] br0: port 1(veth1) entered disabled state [ 44.432930] br0: port 1(veth1) entered blocking state [ 44.432994] br0: port 1(veth1) entered forwarding state [ 44.509674] br0: entered promiscuous mode [ 68.283800] br0: entered allmulticast mode [ 73.438890] br0: left allmulticast mode [ 76.007745] br0: left promiscuous mode [ 76.053897] br0: port 1(veth1) entered disabled state [ 76.130765] veth1: left allmulticast mode [ 76.130838] veth1: left promiscuous mode [ 76.130908] br0: port 1(veth1) entered disabled state [ 76.382555] br0: port 1(veth1) entered blocking state [ 76.382623] br0: port 1(veth1) entered disabled state [ 76.382704] veth1: entered allmulticast mode [ 76.382809] veth1: entered promiscuous mode [ 76.382876] br0: port 1(veth1) entered blocking state [ 76.382932] br0: port 1(veth1) entered forwarding state [ 76.446342] br0: port 1(veth1) entered disabled state [ 76.446458] br0: port 1(veth1) entered blocking state [ 76.446526] br0: port 1(veth1) entered forwarding state [ 76.514216] br0: entered promiscuous mode [ 100.269092] br0: entered allmulticast mode [ 105.420246] br0: left allmulticast mode [ 108.061088] br0: left promiscuous mode [ 108.108286] br0: port 1(veth1) entered disabled state [ 108.197445] veth1: left allmulticast mode [ 108.197506] veth1: left promiscuous mode [ 108.197559] br0: port 1(veth1) entered disabled state [ 108.407261] veth1: entered promiscuous mode [ 108.432746] veth1: left promiscuous mode [ 108.549376] 8021q: 802.1Q VLAN Support v1.8 [ 108.770081] veth1: entered promiscuous mode [ 125.161013] veth1.100: entered promiscuous mode [ 130.315719] veth1.100: left promiscuous mode [ 132.518491] veth1.100: entered allmulticast mode [ 132.518570] veth1: entered allmulticast mode [ 137.673889] veth1.100: left allmulticast mode [ 137.673960] veth1: left allmulticast mode [ 145.210489] veth1: left promiscuous mode [ 145.523238] veth1: entered promiscuous mode [ 145.549681] veth1: left promiscuous mode [ 145.870191] br0: port 1(veth1) entered blocking state [ 145.870275] br0: port 1(veth1) entered disabled state [ 145.870327] veth1: entered allmulticast mode [ 145.870419] veth1: entered promiscuous mode [ 145.870469] br0: port 1(veth1) entered blocking state [ 145.870508] br0: port 1(veth1) entered forwarding state [ 162.310264] veth1.100: entered promiscuous mode [ 167.483687] veth1.100: left promiscuous mode [ 169.698280] veth1.100: entered allmulticast mode [ 174.850328] veth1.100: left allmulticast mode [ 182.461191] veth1: left allmulticast mode [ 182.461267] veth1: left promiscuous mode [ 182.461323] br0: port 1(veth1) entered disabled state [ 182.812413] veth1: entered promiscuous mode [ 182.841468] veth1: left promiscuous mode [ 183.161297] br0: port 1(veth1) entered blocking state [ 183.161379] br0: port 1(veth1) entered disabled state [ 183.161443] veth1: entered allmulticast mode [ 183.161575] veth1: entered promiscuous mode [ 183.161646] br0: port 1(veth1) entered blocking state [ 183.161714] br0: port 1(veth1) entered forwarding state [ 199.578555] veth1.100: entered promiscuous mode [ 204.737031] veth1.100: left promiscuous mode [ 206.950233] veth1.100: entered allmulticast mode [ 212.107441] veth1.100: left allmulticast mode [ 219.561950] veth1: left allmulticast mode [ 219.562008] veth1: left promiscuous mode [ 219.562060] br0: port 1(veth1) entered disabled state [ 219.954585] br0: port 1(veth1) entered blocking state [ 219.954661] br0: port 1(veth1) entered disabled state [ 219.954722] veth1: entered allmulticast mode [ 219.954824] veth1: entered promiscuous mode [ 219.965481] br0: port 1(veth1) entered blocking state [ 219.965553] br0: port 1(veth1) entered forwarding state [ 220.023382] br0: port 1(veth1) entered disabled state [ 220.023520] br0: port 1(veth1) entered blocking state [ 220.023585] br0: port 1(veth1) entered forwarding state [ 220.123500] br0: entered promiscuous mode [ 236.488846] br0.100: entered promiscuous mode [ 241.670838] br0.100: left promiscuous mode [ 243.894670] br0.100: entered allmulticast mode [ 243.894767] br0: entered allmulticast mode [ 249.062395] br0.100: left allmulticast mode [ 249.062454] br0: left allmulticast mode [ 251.650738] br0: left promiscuous mode [ 251.703843] br0: port 1(veth1) entered disabled state [ 251.781878] veth1: left allmulticast mode [ 251.781950] veth1: left promiscuous mode [ 251.781998] br0: port 1(veth1) entered disabled state [ 252.071873] br0: port 1(veth1) entered blocking state [ 252.071962] br0: port 1(veth1) entered disabled state [ 252.072026] veth1: entered allmulticast mode [ 252.072134] veth1: entered promiscuous mode [ 252.072196] br0: port 1(veth1) entered blocking state [ 252.072255] br0: port 1(veth1) entered forwarding state [ 252.139884] br0: port 1(veth1) entered disabled state [ 252.139995] br0: port 1(veth1) entered blocking state [ 252.140062] br0: port 1(veth1) entered forwarding state [ 252.246074] br0: entered promiscuous mode [ 268.665387] br0.100: entered promiscuous mode [ 273.834212] br0.100: left promiscuous mode [ 276.035964] br0.100: entered allmulticast mode [ 276.036032] br0: entered allmulticast mode [ 281.191697] br0.100: left allmulticast mode [ 281.191786] br0: left allmulticast mode [ 283.803819] br0: left promiscuous mode [ 283.860098] br0: port 1(veth1) entered disabled state [ 283.949284] veth1: left allmulticast mode [ 283.949357] veth1: left promiscuous mode [ 283.949415] br0: port 1(veth1) entered disabled state