[ 3.868935] ------------[ cut here ]------------ [ 3.868987] refcount_t: underflow; use-after-free. [ 3.869035] WARNING: CPU: 0 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 3.869097] Modules linked in: [ 3.869123] CPU: 0 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 3.869185] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 3.869234] Workqueue: netns cleanup_net [ 3.869265] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 3.869305] Code: aa 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 aa 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 [ 3.869426] RSP: 0018:ffffa40c0024fd50 EFLAGS: 00010286 [ 3.869460] RAX: 0000000000000000 RBX: ffffa40c0024fd60 RCX: 00000000ffffdfff [ 3.869510] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 3.869578] RBP: ffffa40c0024f858 R08: ffffffffab75ba28 R09: 00000000ffffdfff [ 3.869655] R10: ffffffffab67ba40 R11: ffffffffab72ba40 R12: dead000000000122 [ 3.869706] R13: 00000000fffb7ac1 R14: 0000000000000001 R15: ffff8a1b83f85000 [ 3.869757] FS: 0000000000000000(0000) GS:ffff8a1c12d91000(0000) knlGS:0000000000000000 [ 3.869812] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3.869853] CR2: 00007fae04d18e50 CR3: 0000000003159004 CR4: 0000000000772ef0 [ 3.869907] PKRU: 55555554 [ 3.869930] Call Trace: [ 3.869947] [ 3.869968] netdev_run_todo+0x21a/0x550 [ 3.869996] ops_undo_list+0x1e3/0x1f0 [ 3.870031] cleanup_net+0x1b7/0x300 [ 3.870061] process_one_work+0x162/0x380 [ 3.870098] worker_thread+0x299/0x3c0 [ 3.870138] ? rescuer_thread+0x4c0/0x4c0 [ 3.870169] kthread+0x101/0x1f0 [ 3.870199] ? kthreads_online_cpu+0x110/0x110 [ 3.870233] ? kthreads_online_cpu+0x110/0x110 [ 3.870266] ret_from_fork+0x11c/0x140 [ 3.870299] ? kthreads_online_cpu+0x110/0x110 [ 3.870338] ret_from_fork_asm+0x11/0x20 [ 3.870370] [ 3.870392] ---[ end trace 0000000000000000 ]---