[ 1.745582] ------------[ cut here ]------------ [ 1.745704] refcount_t: underflow; use-after-free. [ 1.745776] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.745876] Modules linked in: veth [ 1.745933] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.746038] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.746109] Workqueue: netns cleanup_net [ 1.746159] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.746223] Code: 97 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 71 97 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 [ 1.746427] RSP: 0018:ffffb98e80067d50 EFLAGS: 00010286 [ 1.746483] RAX: 0000000000000000 RBX: ffffb98e80067d60 RCX: 00000000ffffdfff [ 1.746574] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.746664] RBP: ffffb98e80067880 R08: ffffffff97b56a28 R09: 00000000ffffdfff [ 1.746746] R10: ffffffff97a76a40 R11: ffffffff97b26a40 R12: dead000000000122 [ 1.746827] R13: 00000000fffb726d R14: 0000000000000001 R15: ffff9b5d03391000 [ 1.746909] FS: 0000000000000000(0000) GS:ffff9b5da69e2000(0000) knlGS:0000000000000000 [ 1.746997] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.747074] CR2: 00007f2a35583a50 CR3: 00000000032f8006 CR4: 0000000000772ef0 [ 1.747160] PKRU: 55555554 [ 1.747194] Call Trace: [ 1.747223] [ 1.747249] netdev_run_todo+0x21a/0x550 [ 1.747300] ops_undo_list+0x1e3/0x1f0 [ 1.747347] cleanup_net+0x1b7/0x2b0 [ 1.747398] process_one_work+0x162/0x380 [ 1.747446] worker_thread+0x299/0x3c0 [ 1.747497] ? rescuer_thread+0x4c0/0x4c0 [ 1.747545] kthread+0x101/0x1f0 [ 1.747597] ? kthreads_online_cpu+0x110/0x110 [ 1.747654] ? kthreads_online_cpu+0x110/0x110 [ 1.747720] ret_from_fork+0x11c/0x140 [ 1.747770] ? kthreads_online_cpu+0x110/0x110 [ 1.747826] ret_from_fork_asm+0x11/0x20 [ 1.747877] [ 1.747903] ---[ end trace 0000000000000000 ]---