[ 1.568497] ------------[ cut here ]------------ [ 1.568581] refcount_t: underflow; use-after-free. [ 1.568649] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.568742] Modules linked in: veth [ 1.568784] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.568885] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.568944] Workqueue: netns cleanup_net [ 1.568984] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.569021] Code: b7 e8 f8 c3 ba ff 90 0f 0b 90 90 c3 80 3d 39 c1 eb 00 00 75 89 c6 05 30 c1 eb 00 01 90 48 c7 c7 30 a0 31 b7 e8 d5 c3 ba ff 90 <0f> 0b 90 90 c3 80 3d 14 c1 eb 00 00 0f 85 62 ff ff ff c6 05 07 c1 [ 1.569147] RSP: 0018:ffffa39280067d50 EFLAGS: 00010286 [ 1.569188] RAX: 0000000000000000 RBX: ffffa39280067d60 RCX: 00000000ffffdfff [ 1.569239] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.569301] RBP: ffffa39280067880 R08: ffffffffb7756a28 R09: 00000000ffffdfff [ 1.569353] R10: ffffffffb7676a40 R11: ffffffffb7726a40 R12: dead000000000122 [ 1.569406] R13: 00000000fffb71c3 R14: 0000000000000001 R15: ffff963b84e1c000 [ 1.569471] FS: 0000000000000000(0000) GS:ffff963c06de2000(0000) knlGS:0000000000000000 [ 1.569532] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.569576] CR2: 00007fc95a098760 CR3: 000000000330c006 CR4: 0000000000772ef0 [ 1.569629] PKRU: 55555554 [ 1.569644] Call Trace: [ 1.569664] [ 1.569681] netdev_run_todo+0x21a/0x550 [ 1.569714] ops_undo_list+0x1e3/0x1f0 [ 1.569753] cleanup_net+0x1b7/0x2b0 [ 1.569785] process_one_work+0x162/0x380 [ 1.569831] worker_thread+0x299/0x3c0 [ 1.569863] ? rescuer_thread+0x4c0/0x4c0 [ 1.569904] kthread+0x101/0x1f0 [ 1.569936] ? kthreads_online_cpu+0x110/0x110 [ 1.569976] ? kthreads_online_cpu+0x110/0x110 [ 1.570014] ret_from_fork+0x11c/0x140 [ 1.570058] ? kthreads_online_cpu+0x110/0x110 [ 1.570094] ret_from_fork_asm+0x11/0x20 [ 1.570126] [ 1.570149] ---[ end trace 0000000000000000 ]---