[ 2.571961] openvswitch: Open vSwitch switching datapath [ 3.898809] netlink: 'python3': attribute type 2 has an invalid length. [ 3.899216] arpping: entered promiscuous mode [ 4.087724] ip (290) used greatest stack depth: 12168 bytes left [ 4.723164] c0: entered promiscuous mode [ 5.510353] s0: entered promiscuous mode [ 8.052694] s0 (unregistering): left promiscuous mode [ 8.061574] ------------[ cut here ]------------ [ 8.061683] refcount_t: underflow; use-after-free. [ 8.061752] WARNING: CPU: 3 PID: 412 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 8.061843] Modules linked in: openvswitch psample nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nsh [ 8.061926] CPU: 3 UID: 0 PID: 412 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 8.061993] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 8.062042] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 8.062092] Code: b2 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 b5 b2 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 [ 8.062228] RSP: 0018:ffffc10780797730 EFLAGS: 00010282 [ 8.062268] RAX: 0000000000000000 RBX: ffffc10780797740 RCX: 00000000ffffdfff [ 8.062326] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 8.062381] RBP: ffffc10780797238 R08: ffffffffb335ba28 R09: 00000000ffffdfff [ 8.062438] R10: ffffffffb327ba40 R11: ffffffffb332ba40 R12: dead000000000122 [ 8.062498] R13: 00000000fffb8b1e R14: 0000000000000001 R15: ffff9a76c2d29000 [ 8.062557] FS: 00007f93b1b5e800(0000) GS:ffff9a774b311000(0000) knlGS:0000000000000000 [ 8.062618] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 8.062666] CR2: 00007f68f23e2900 CR3: 0000000009b6a003 CR4: 0000000000772ef0 [ 8.062725] PKRU: 55555554 [ 8.062746] Call Trace: [ 8.062766] [ 8.062789] netdev_run_todo+0x21a/0x550 [ 8.062839] rtnl_dellink+0x15b/0x350 [ 8.062883] ? kmalloc_reserve+0x8a/0xf0 [ 8.062920] ? cap_safe_nice+0x70/0x70 [ 8.062958] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 8.062999] rtnetlink_rcv_msg+0x358/0x400 [ 8.063038] ? get_page_from_freelist+0x15b4/0x1770 [ 8.063098] ? rtnl_calcit.isra.0+0x110/0x110 [ 8.063148] netlink_rcv_skb+0x57/0x100 [ 8.063189] netlink_unicast+0x252/0x380 [ 8.063224] ? __alloc_skb+0xdb/0x190 [ 8.063264] netlink_sendmsg+0x1be/0x3e0 [ 8.063307] ____sys_sendmsg+0x132/0x260 [ 8.063340] ? copy_msghdr_from_user+0x6c/0xa0 [ 8.063382] ___sys_sendmsg+0x87/0xd0 [ 8.063417] ? do_wp_page+0x369/0xe90 [ 8.063463] ? ___pte_offset_map+0x1b/0xd0 [ 8.063498] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 8.063552] ? fsnotify_grab_connector+0x48/0x80 [ 8.063610] ? fsnotify_destroy_marks+0x29/0x150 [ 8.063661] __sys_sendmsg+0x71/0xd0 [ 8.063702] do_syscall_64+0xa4/0xfd0 [ 8.063743] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 8.063793] RIP: 0033:0x7f93b1d2c1d7 [ 8.063828] 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 [ 8.063957] RSP: 002b:00007ffe640f4d08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 8.064015] RAX: ffffffffffffffda RBX: 00007ffe640f5430 RCX: 00007f93b1d2c1d7 [ 8.064073] RDX: 0000000000000000 RSI: 00007ffe640f4d70 RDI: 0000000000000005 [ 8.064125] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 8.064174] R10: 00007f93b1c28f60 R11: 0000000000000246 R12: 0000000000000001 [ 8.064229] R13: 00000000690df01b R14: 0000000000499600 R15: 0000000000000000 [ 8.064289] [ 8.064311] ---[ end trace 0000000000000000 ]--- [ 8.064897] ip (412) used greatest stack depth: 11744 bytes left [ 8.105175] c0 (unregistering): left promiscuous mode [ 8.750268] arpping: left promiscuous mode [ 10.533690] netlink: 'python3': attribute type 2 has an invalid length. [ 10.534072] ct4: entered promiscuous mode [ 11.335390] c0: entered promiscuous mode [ 12.109322] s0: entered promiscuous mode [ 28.820621] s0 (unregistering): left promiscuous mode [ 28.868162] c0 (unregistering): left promiscuous mode [ 29.404751] ct4: left promiscuous mode [ 30.980993] netlink: 'python3': attribute type 2 has an invalid length. [ 30.981295] cv4: entered promiscuous mode [ 31.726665] c0: entered promiscuous mode [ 32.471498] s0: entered promiscuous mode [ 36.991603] s0 (unregistering): left promiscuous mode [ 37.044184] c0 (unregistering): left promiscuous mode [ 37.656187] cv4: left promiscuous mode [ 39.268692] netlink: 'python3': attribute type 2 has an invalid length. [ 39.269027] nat4: entered promiscuous mode [ 40.126522] c0: entered promiscuous mode [ 40.901076] s0: entered promiscuous mode [ 56.905658] s0 (unregistering): left promiscuous mode [ 56.957629] c0 (unregistering): left promiscuous mode [ 57.513940] nat4: left promiscuous mode [ 59.105933] netlink: 'python3': attribute type 2 has an invalid length. [ 59.106285] natrelated4: entered promiscuous mode [ 59.865598] c0: entered promiscuous mode [ 60.589793] s0: entered promiscuous mode [ 65.428545] s0 (unregistering): left promiscuous mode [ 65.495601] c0 (unregistering): left promiscuous mode [ 66.008092] natrelated4: left promiscuous mode [ 67.615794] netlink: 'python3': attribute type 2 has an invalid length. [ 67.616122] nv0: entered promiscuous mode [ 68.286868] netlink: 'python3': attribute type 2 has an invalid length. [ 68.287042] openvswitch: nv0: Dropping previously announced user features [ 69.004017] left0: entered promiscuous mode [ 69.742018] right0: entered promiscuous mode [ 71.025255] right0: left promiscuous mode [ 72.263049] openvswitch: netlink: Flow actions may not be safe on all matching packets. [ 72.351504] python3 (1760) used greatest stack depth: 10568 bytes left [ 72.968219] openvswitch: netlink: Flow actions may not be safe on all matching packets. [ 73.138421] left0 (unregistering): left promiscuous mode [ 73.711483] nv0: left promiscuous mode [ 75.950634] ui0: entered promiscuous mode [ 76.736671] left0: entered promiscuous mode [ 78.488119] left0 (unregistering): left promiscuous mode [ 79.006285] ui0: left promiscuous mode [ 80.705263] tdp0: entered promiscuous mode [ 81.612252] left0: entered promiscuous mode [ 82.195895] left0: left promiscuous mode [ 82.870941] ovs-vxlan0: entered promiscuous mode [ 88.322758] ovs-vxlan0 (unregistering): left promiscuous mode [ 88.885349] tdp0: left promiscuous mode [ 90.494165] netlink: 'python3': attribute type 2 has an invalid length. [ 90.494477] dropreason: entered promiscuous mode [ 91.274631] c0: entered promiscuous mode [ 92.011897] s0: entered promiscuous mode [ 114.213619] s0 (unregistering): left promiscuous mode [ 114.263070] c0 (unregistering): left promiscuous mode [ 114.820603] dropreason: left promiscuous mode [ 116.501405] psample: entered promiscuous mode [ 117.515035] c0: entered promiscuous mode [ 117.733730] s0: entered promiscuous mode [ 118.822628] openvswitch: netlink: Flow actions may not be safe on all matching packets. [ 119.435802] openvswitch: netlink: Flow actions may not be safe on all matching packets. [ 120.081205] openvswitch: netlink: Flow actions may not be safe on all matching packets. [ 124.530753] s0 (unregistering): left promiscuous mode [ 124.589901] c0 (unregistering): left promiscuous mode [ 125.187295] psample: left promiscuous mode