[ 2.066114] ip (247) used greatest stack depth: 12424 bytes left [ 2.744879] 8021q: 802.1Q VLAN Support v1.8 [ 2.803033] gre: GRE over IPv4 demultiplexer driver [ 2.805756] ip_gre: GRE over IPv4 tunneling driver [ 3.115434] ip (363) used greatest stack depth: 12344 bytes left [ 11.414386] ------------[ cut here ]------------ [ 11.414547] refcount_t: underflow; use-after-free. [ 11.414614] WARNING: CPU: 3 PID: 431 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 11.414723] Modules linked in: ip_gre gre 8021q dummy vrf veth [ 11.414804] CPU: 3 UID: 0 PID: 431 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 11.414902] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.414974] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 11.415033] Code: b0 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 91 b0 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 [ 11.415223] RSP: 0018:ffffaf91c09d7730 EFLAGS: 00010282 [ 11.415277] RAX: 0000000000000000 RBX: ffffaf91c09d7740 RCX: 00000000ffffdfff [ 11.415365] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 11.415454] RBP: ffff9e96c5afb000 R08: ffffffffb0d56a28 R09: 00000000ffffdfff [ 11.415532] R10: ffffffffb0c76a40 R11: ffffffffb0d26a40 R12: 0000000000000001 [ 11.415615] R13: 00000000fffb982e R14: 0000000000000001 R15: ffff9e96c5afb000 [ 11.415695] FS: 00007f754f854800(0000) GS:ffff9e974d959000(0000) knlGS:0000000000000000 [ 11.415778] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 11.415843] CR2: 00000000004e7438 CR3: 00000000032e0001 CR4: 0000000000772ef0 [ 11.415922] PKRU: 55555554 [ 11.415955] Call Trace: [ 11.415983] [ 11.416007] netdev_run_todo+0x21a/0x550 [ 11.416061] rtnl_dellink+0x15b/0x350 [ 11.416111] ? virtio_fs_enqueue_req+0x352/0x570 [ 11.416173] ? netdev_run_todo+0x63/0x550 [ 11.416220] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 11.416272] rtnetlink_rcv_msg+0x358/0x400 [ 11.416318] ? get_page_from_freelist+0x15b4/0x1770 [ 11.416382] ? rtnl_calcit.isra.0+0x110/0x110 [ 11.416438] netlink_rcv_skb+0x57/0x100 [ 11.416488] netlink_unicast+0x252/0x380 [ 11.416533] ? __alloc_skb+0xdb/0x190 [ 11.416579] netlink_sendmsg+0x1be/0x3e0 [ 11.416618] ____sys_sendmsg+0x132/0x260 [ 11.416664] ? copy_msghdr_from_user+0x6c/0xa0 [ 11.416725] ___sys_sendmsg+0x87/0xd0 [ 11.416765] ? do_wp_page+0x369/0xe90 [ 11.416809] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 11.416869] ? fsnotify_grab_connector+0x48/0x80 [ 11.416931] ? fsnotify_destroy_marks+0x29/0x150 [ 11.416992] __sys_sendmsg+0x71/0xd0 [ 11.417031] do_syscall_64+0xa4/0xfd0 [ 11.417079] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 11.417139] RIP: 0033:0x7f754fa221d7 [ 11.417186] 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 [ 11.417380] RSP: 002b:00007ffc8f8f3af8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 11.417462] RAX: ffffffffffffffda RBX: 00007ffc8f8f4220 RCX: 00007f754fa221d7 [ 11.417542] RDX: 0000000000000000 RSI: 00007ffc8f8f3b60 RDI: 0000000000000005 [ 11.417622] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 11.417701] R10: 00007f754f91ef60 R11: 0000000000000246 R12: 0000000000000002 [ 11.417780] R13: 00000000690de8a0 R14: 0000000000499600 R15: 0000000000000000 [ 11.417860] [ 11.417887] ---[ end trace 0000000000000000 ]--- [ 11.418551] ip (431) used greatest stack depth: 11744 bytes left