[ 3.505123] ------------[ cut here ]------------ [ 3.505215] refcount_t: underflow; use-after-free. [ 3.505291] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 3.505388] Modules linked in: [ 3.505438] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 3.505536] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 3.505603] Workqueue: netns cleanup_net [ 3.505656] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 3.505711] Code: bb 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 b5 bb 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 [ 3.505896] RSP: 0018:ffffb095c0067d50 EFLAGS: 00010286 [ 3.505949] RAX: 0000000000000000 RBX: ffffb095c0067d60 RCX: 00000000ffffdfff [ 3.506026] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 3.506129] RBP: ffffb095c0067858 R08: ffffffffbc35ba28 R09: 00000000ffffdfff [ 3.506214] R10: ffffffffbc27ba40 R11: ffffffffbc32ba40 R12: dead000000000122 [ 3.506289] R13: 00000000fffb794e R14: 0000000000000001 R15: ffff8dce468c2000 [ 3.506371] FS: 0000000000000000(0000) GS:ffff8dcec3191000(0000) knlGS:0000000000000000 [ 3.506465] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3.506528] CR2: 00007fb98fe70658 CR3: 0000000003b74006 CR4: 0000000000772ef0 [ 3.506609] PKRU: 55555554 [ 3.506634] Call Trace: [ 3.506661] [ 3.506685] netdev_run_todo+0x21a/0x550 [ 3.506735] ops_undo_list+0x1e3/0x1f0 [ 3.506781] cleanup_net+0x1b7/0x300 [ 3.506822] process_one_work+0x162/0x380 [ 3.506873] worker_thread+0x299/0x3c0 [ 3.506920] ? rescuer_thread+0x4c0/0x4c0 [ 3.506963] kthread+0x101/0x1f0 [ 3.507011] ? kthreads_online_cpu+0x110/0x110 [ 3.507066] ? kthreads_online_cpu+0x110/0x110 [ 3.507124] ret_from_fork+0x11c/0x140 [ 3.507174] ? kthreads_online_cpu+0x110/0x110 [ 3.507227] ret_from_fork_asm+0x11/0x20 [ 3.507277] [ 3.507302] ---[ end trace 0000000000000000 ]---