[ 1.740436] ------------[ cut here ]------------ [ 1.740535] refcount_t: underflow; use-after-free. [ 1.740602] WARNING: CPU: 3 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.740696] Modules linked in: veth [ 1.740740] CPU: 3 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.740851] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.740923] Workqueue: netns cleanup_net [ 1.740973] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.741030] Code: 91 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 91 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 [ 1.741225] RSP: 0018:ffffafefc0067d50 EFLAGS: 00010286 [ 1.741280] RAX: 0000000000000000 RBX: ffffafefc0067d60 RCX: 00000000ffffdfff [ 1.741361] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.741449] RBP: ffffafefc0067880 R08: ffffffff92156a28 R09: 00000000ffffdfff [ 1.741537] R10: ffffffff92076a40 R11: ffffffff92126a40 R12: dead000000000122 [ 1.741621] R13: 00000000fffb725f R14: 0000000000000001 R15: ffff8cc2830e4000 [ 1.741701] FS: 0000000000000000(0000) GS:ffff8cc32c562000(0000) knlGS:0000000000000000 [ 1.741806] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.741870] CR2: 00007f32f997e000 CR3: 0000000011041004 CR4: 0000000000772ef0 [ 1.741957] PKRU: 55555554 [ 1.741990] Call Trace: [ 1.742021] [ 1.742047] netdev_run_todo+0x21a/0x550 [ 1.742099] ops_undo_list+0x1e3/0x1f0 [ 1.742141] cleanup_net+0x1b7/0x2b0 [ 1.742186] process_one_work+0x162/0x380 [ 1.742237] worker_thread+0x299/0x3c0 [ 1.742288] ? rescuer_thread+0x4c0/0x4c0 [ 1.742327] kthread+0x101/0x1f0 [ 1.742375] ? kthreads_online_cpu+0x110/0x110 [ 1.742437] ? kthreads_online_cpu+0x110/0x110 [ 1.742503] ret_from_fork+0x11c/0x140 [ 1.742551] ? kthreads_online_cpu+0x110/0x110 [ 1.742603] ret_from_fork_asm+0x11/0x20 [ 1.742647] [ 1.742684] ---[ end trace 0000000000000000 ]---