[ 5.274623] ------------[ cut here ]------------ [ 5.274709] refcount_t: underflow; use-after-free. [ 5.274777] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 5.274873] Modules linked in: unix_diag [ 5.274923] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 5.275020] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 5.275091] Workqueue: netns cleanup_net [ 5.275138] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 5.275198] Code: 87 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 87 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 [ 5.275383] RSP: 0018:ffffac00c0067d50 EFLAGS: 00010286 [ 5.275435] RAX: 0000000000000000 RBX: ffffac00c0067d60 RCX: 00000000ffffdfff [ 5.275516] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 5.275602] RBP: ffffac00c0067858 R08: ffffffff8875ba28 R09: 00000000ffffdfff [ 5.275692] R10: ffffffff8867ba40 R11: ffffffff8872ba40 R12: dead000000000122 [ 5.275772] R13: 00000000fffb801f R14: 0000000000000001 R15: ffff9441859a2000 [ 5.275852] FS: 0000000000000000(0000) GS:ffff944235d91000(0000) knlGS:0000000000000000 [ 5.275935] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 5.276000] CR2: 00005601ea52bdec CR3: 0000000005929006 CR4: 0000000000772ef0 [ 5.276081] PKRU: 55555554 [ 5.276114] Call Trace: [ 5.276145] [ 5.276170] netdev_run_todo+0x21a/0x550 [ 5.276211] ops_undo_list+0x1e3/0x1f0 [ 5.276258] cleanup_net+0x1b7/0x300 [ 5.276296] process_one_work+0x162/0x380 [ 5.276348] worker_thread+0x299/0x3c0 [ 5.276388] ? rescuer_thread+0x4c0/0x4c0 [ 5.276427] kthread+0x101/0x1f0 [ 5.276469] ? kthreads_online_cpu+0x110/0x110 [ 5.276520] ? kthreads_online_cpu+0x110/0x110 [ 5.276578] ret_from_fork+0x11c/0x140 [ 5.276634] ? kthreads_online_cpu+0x110/0x110 [ 5.276685] ret_from_fork_asm+0x11/0x20 [ 5.276725] [ 5.276750] ---[ end trace 0000000000000000 ]---