[ 1.762782] ------------[ cut here ]------------ [ 1.762897] refcount_t: underflow; use-after-free. [ 1.762958] WARNING: CPU: 0 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.763030] Modules linked in: veth [ 1.763065] CPU: 0 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.763146] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.763197] Workqueue: netns cleanup_net [ 1.763238] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.763285] Code: a6 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 d1 a6 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 [ 1.763420] RSP: 0018:ffffbb7280257d50 EFLAGS: 00010286 [ 1.763464] RAX: 0000000000000000 RBX: ffffbb7280257d60 RCX: 00000000ffffdfff [ 1.763523] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.763588] RBP: ffffbb7280257880 R08: ffffffffa7156a28 R09: 00000000ffffdfff [ 1.763675] R10: ffffffffa7076a40 R11: ffffffffa7126a40 R12: dead000000000122 [ 1.763744] R13: 00000000fffb7285 R14: 0000000000000001 R15: ffff9cd78112e000 [ 1.763807] FS: 0000000000000000(0000) GS:ffff9cd8173e2000(0000) knlGS:0000000000000000 [ 1.763876] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.763927] CR2: 000000000d059688 CR3: 0000000004eb7002 CR4: 0000000000772ef0 [ 1.763988] PKRU: 55555554 [ 1.764010] Call Trace: [ 1.764035] [ 1.764056] netdev_run_todo+0x21a/0x550 [ 1.764098] ops_undo_list+0x1e3/0x1f0 [ 1.764140] cleanup_net+0x1b7/0x2b0 [ 1.764172] process_one_work+0x162/0x380 [ 1.764216] worker_thread+0x299/0x3c0 [ 1.764275] ? rescuer_thread+0x4c0/0x4c0 [ 1.764315] kthread+0x101/0x1f0 [ 1.764354] ? kthreads_online_cpu+0x110/0x110 [ 1.764395] ? kthreads_online_cpu+0x110/0x110 [ 1.764439] ret_from_fork+0x11c/0x140 [ 1.764477] ? kthreads_online_cpu+0x110/0x110 [ 1.764527] ret_from_fork_asm+0x11/0x20 [ 1.764567] [ 1.764593] ---[ end trace 0000000000000000 ]---