[ 1.923834] ------------[ cut here ]------------ [ 1.923953] refcount_t: underflow; use-after-free. [ 1.924026] WARNING: CPU: 0 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.924116] Modules linked in: veth [ 1.924162] CPU: 0 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.924257] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.924321] Workqueue: netns cleanup_net [ 1.924366] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.924423] Code: af 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 af 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 [ 1.924607] RSP: 0018:ffffa38e0024fd50 EFLAGS: 00010286 [ 1.924664] RAX: 0000000000000000 RBX: ffffa38e0024fd60 RCX: 00000000ffffdfff [ 1.924741] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.924825] RBP: ffffa38e0024f880 R08: ffffffffafb56a28 R09: 00000000ffffdfff [ 1.924911] R10: ffffffffafa76a40 R11: ffffffffafb26a40 R12: dead000000000122 [ 1.924988] R13: 00000000fffb7320 R14: 0000000000000001 R15: ffff8df58112d000 [ 1.925064] FS: 0000000000000000(0000) GS:ffff8df60e9e2000(0000) knlGS:0000000000000000 [ 1.925148] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.925211] CR2: 00007fa534711000 CR3: 0000000004a11001 CR4: 0000000000772ef0 [ 1.925289] PKRU: 55555554 [ 1.925315] Call Trace: [ 1.925342] [ 1.925373] netdev_run_todo+0x21a/0x550 [ 1.925423] ops_undo_list+0x1e3/0x1f0 [ 1.925472] cleanup_net+0x1b7/0x2b0 [ 1.925512] process_one_work+0x162/0x380 [ 1.925559] worker_thread+0x299/0x3c0 [ 1.925605] ? rescuer_thread+0x4c0/0x4c0 [ 1.925644] kthread+0x101/0x1f0 [ 1.925690] ? kthreads_online_cpu+0x110/0x110 [ 1.925741] ? kthreads_online_cpu+0x110/0x110 [ 1.925793] ret_from_fork+0x11c/0x140 [ 1.925851] ? kthreads_online_cpu+0x110/0x110 [ 1.925902] ret_from_fork_asm+0x11/0x20 [ 1.925951] [ 1.925975] ---[ end trace 0000000000000000 ]---