[ 2.423556] ------------[ cut here ]------------ [ 2.423747] refcount_t: underflow; use-after-free. [ 2.423838] WARNING: CPU: 2 PID: 275 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.423943] Modules linked in: [ 2.424006] CPU: 2 UID: 0 PID: 275 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.424113] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.424206] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.424288] Code: 90 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 f5 90 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 [ 2.424480] RSP: 0018:ffff9ea08066f730 EFLAGS: 00010282 [ 2.424561] RAX: 0000000000000000 RBX: ffff9ea08066f740 RCX: 00000000ffffdfff [ 2.424658] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.424756] RBP: ffff9142849cd000 R08: ffffffff9175ba28 R09: 00000000ffffdfff [ 2.424851] R10: ffffffff9167ba40 R11: ffffffff9172ba40 R12: 0000000000000001 [ 2.424947] R13: 00000000fffb7511 R14: 0000000000000001 R15: ffff9142849cd000 [ 2.425049] FS: 00007f41f816d800(0000) GS:ffff91432ce91000(0000) knlGS:0000000000000000 [ 2.425151] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.425239] CR2: 00000000004e6e88 CR3: 0000000004b4b006 CR4: 0000000000772ef0 [ 2.425337] PKRU: 55555554 [ 2.425367] Call Trace: [ 2.425412] [ 2.425442] netdev_run_todo+0x21a/0x550 [ 2.425504] rtnl_dellink+0x15b/0x350 [ 2.425582] ? virtio_fs_enqueue_req+0x352/0x570 [ 2.425660] ? netdev_run_todo+0x63/0x550 [ 2.425721] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 2.425775] rtnetlink_rcv_msg+0x358/0x400 [ 2.425836] ? get_page_from_freelist+0x15b4/0x1770 [ 2.425909] ? rtnl_calcit.isra.0+0x110/0x110 [ 2.425981] netlink_rcv_skb+0x57/0x100 [ 2.426048] netlink_unicast+0x252/0x380 [ 2.426109] ? __alloc_skb+0xdb/0x190 [ 2.426153] netlink_sendmsg+0x1be/0x3e0 [ 2.426235] ____sys_sendmsg+0x132/0x260 [ 2.426301] ? copy_msghdr_from_user+0x6c/0xa0 [ 2.426372] ___sys_sendmsg+0x87/0xd0 [ 2.426432] ? do_wp_page+0x369/0xe90 [ 2.426493] ? ___pte_offset_map+0x1b/0xd0 [ 2.426562] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 2.426639] ? fsnotify_grab_connector+0x48/0x80 [ 2.426715] ? fsnotify_destroy_marks+0x29/0x150 [ 2.426787] __sys_sendmsg+0x71/0xd0 [ 2.426848] do_syscall_64+0xa4/0xfd0 [ 2.426911] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 2.426985] RIP: 0033:0x7f41f833b1d7 [ 2.427049] 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 [ 2.427240] RSP: 002b:00007ffd75074248 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 2.427339] RAX: ffffffffffffffda RBX: 00007ffd75074980 RCX: 00007f41f833b1d7 [ 2.427433] RDX: 0000000000000000 RSI: 00007ffd750742b0 RDI: 0000000000000005 [ 2.427565] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 2.427659] R10: 00007f41f8237510 R11: 0000000000000246 R12: 0000000000000002 [ 2.427756] R13: 00000000690de658 R14: 0000000000499600 R15: 0000000000000000 [ 2.427852] [ 2.427882] ---[ end trace 0000000000000000 ]--- [ 2.428664] ip (275) used greatest stack depth: 11744 bytes left [ 15.817193] IPv6: Can't replace route, no match found [ 16.220404] IPv6: Can't replace route, no match found [ 27.120085] Mirror/redirect action on [ 89.580196] veth2: entered promiscuous mode [ 89.591854] veth2: left promiscuous mode