[ 1.918203] ip (272) used greatest stack depth: 12136 bytes left [ 2.113371] ------------[ cut here ]------------ [ 2.113454] refcount_t: underflow; use-after-free. [ 2.113519] WARNING: CPU: 3 PID: 304 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.113607] Modules linked in: [ 2.113645] CPU: 3 UID: 0 PID: 304 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.113731] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.113791] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.113839] Code: 9f 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 75 9f 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 [ 2.114012] RSP: 0018:ffffbbc6806878e0 EFLAGS: 00010286 [ 2.114062] RAX: 0000000000000000 RBX: ffffbbc6806878f0 RCX: 00000000ffffdfff [ 2.114137] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.114212] RBP: ffffbbc6806873e8 R08: ffffffff9ff5ba28 R09: 00000000ffffdfff [ 2.114287] R10: ffffffff9fe7ba40 R11: ffffffff9ff2ba40 R12: dead000000000122 [ 2.114365] R13: 00000000fffb73e2 R14: 0000000000000001 R15: ffff958481f3b000 [ 2.114445] FS: 00007fea47c6e800(0000) GS:ffff95851e711000(0000) knlGS:0000000000000000 [ 2.114519] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.114581] CR2: 00007ffdcac906c0 CR3: 00000000090c1001 CR4: 0000000000772ef0 [ 2.114657] PKRU: 55555554 [ 2.114688] Call Trace: [ 2.114715] [ 2.114737] netdev_run_todo+0x21a/0x550 [ 2.114778] rtnl_newlink+0x5a9/0xc00 [ 2.114823] ? rtnl_setlink+0x2c0/0x2c0 [ 2.114866] rtnetlink_rcv_msg+0x358/0x400 [ 2.114904] ? get_page_from_freelist+0x2b6/0x1770 [ 2.114963] ? rtnl_calcit.isra.0+0x110/0x110 [ 2.115014] netlink_rcv_skb+0x57/0x100 [ 2.115061] netlink_unicast+0x252/0x380 [ 2.115097] ? __alloc_skb+0xdb/0x190 [ 2.115141] netlink_sendmsg+0x1be/0x3e0 [ 2.115181] ____sys_sendmsg+0x132/0x260 [ 2.115228] ? copy_msghdr_from_user+0x6c/0xa0 [ 2.115276] ___sys_sendmsg+0x87/0xd0 [ 2.115314] ? do_filp_open+0xc1/0x170 [ 2.115360] ? kmem_cache_alloc_noprof+0x393/0x4a0 [ 2.115413] __sys_sendmsg+0x71/0xd0 [ 2.115449] do_syscall_64+0xa4/0xfd0 [ 2.115492] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 2.115541] RIP: 0033:0x7fea47e3c1d7 [ 2.115581] Code: Unable to access opcode bytes at 0x7fea47e3c1ad. [ 2.115646] RSP: 002b:00007ffdcac94188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 2.115721] RAX: ffffffffffffffda RBX: 00007ffdcac948b0 RCX: 00007fea47e3c1d7 [ 2.115796] RDX: 0000000000000000 RSI: 00007ffdcac941f0 RDI: 0000000000000005 [ 2.115870] RBP: 0000000000000002 R08: 0000000000000044 R09: 0000000000000000 [ 2.115946] R10: 00007fea47d33770 R11: 0000000000000246 R12: 00007ffdcac948c8 [ 2.116020] R13: 00000000690e00a7 R14: 0000000000499600 R15: 00007ffdcac942d8 [ 2.116096] [ 2.116121] ---[ end trace 0000000000000000 ]---