[ 3.341556] ------------[ cut here ]------------ [ 3.341639] refcount_t: underflow; use-after-free. [ 3.341701] WARNING: CPU: 0 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 3.341790] Modules linked in: nf_tables [ 3.341830] CPU: 0 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 3.341921] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 3.341982] Workqueue: netns cleanup_net [ 3.342027] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 3.342075] Code: a3 e8 18 ed b9 ff 90 0f 0b 90 90 c3 80 3d d9 ea ea 00 00 75 89 c6 05 d0 ea ea 00 01 90 48 c7 c7 78 de 51 a3 e8 f5 ec b9 ff 90 <0f> 0b 90 90 c3 80 3d b4 ea ea 00 00 0f 85 62 ff ff ff c6 05 a7 ea [ 3.342248] RSP: 0018:ffffad7c40257d50 EFLAGS: 00010286 [ 3.342298] RAX: 0000000000000000 RBX: ffffad7c40257d60 RCX: 00000000ffffdfff [ 3.342373] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 3.342448] RBP: ffffad7c40257868 R08: ffffffffa3956d28 R09: 00000000ffffdfff [ 3.342527] R10: ffffffffa3876d40 R11: ffffffffa3926d40 R12: dead000000000122 [ 3.342612] R13: 00000000fffb78b0 R14: 0000000000000001 R15: ffff9923049e9000 [ 3.342688] FS: 0000000000000000(0000) GS:ffff99239abd8000(0000) knlGS:0000000000000000 [ 3.342763] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3.342824] CR2: 00007f5fe5873fd0 CR3: 00000000048fa004 CR4: 0000000000772ef0 [ 3.342897] PKRU: 55555554 [ 3.342920] Call Trace: [ 3.342946] [ 3.342969] netdev_run_todo+0x21a/0x550 [ 3.343007] ops_undo_list+0x1e3/0x1f0 [ 3.343050] cleanup_net+0x1b7/0x2b0 [ 3.343089] process_one_work+0x162/0x380 [ 3.343134] worker_thread+0x299/0x3c0 [ 3.343171] ? rescuer_thread+0x4c0/0x4c0 [ 3.343208] kthread+0x101/0x1f0 [ 3.343246] ? kthreads_online_cpu+0x110/0x110 [ 3.343291] ? kthreads_online_cpu+0x110/0x110 [ 3.343342] ret_from_fork+0x11c/0x140 [ 3.343387] ? kthreads_online_cpu+0x110/0x110 [ 3.343437] ret_from_fork_asm+0x11/0x20 [ 3.343476] [ 3.343500] ---[ end trace 0000000000000000 ]---