[ 4.225659] ------------[ cut here ]------------ [ 4.225732] refcount_t: underflow; use-after-free. [ 4.225801] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 4.225880] Modules linked in: [ 4.225917] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 4.226008] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 4.226073] Workqueue: netns cleanup_net [ 4.226118] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 4.226179] Code: b6 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 75 b6 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 [ 4.226339] RSP: 0018:ffffbdd180067d50 EFLAGS: 00010286 [ 4.226399] RAX: 0000000000000000 RBX: ffffbdd180067d60 RCX: 00000000ffffdfff [ 4.226472] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 4.226536] RBP: ffffbdd180067858 R08: ffffffffb6f5ba28 R09: 00000000ffffdfff [ 4.226611] R10: ffffffffb6e7ba40 R11: ffffffffb6f2ba40 R12: dead000000000122 [ 4.226690] R13: 00000000fffb7c24 R14: 0000000000000001 R15: ffff9cd1c432d000 [ 4.226757] FS: 0000000000000000(0000) GS:ffff9cd247591000(0000) knlGS:0000000000000000 [ 4.226843] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 4.226908] CR2: 0000564f32f83dec CR3: 00000000033d3002 CR4: 0000000000772ef0 [ 4.226979] PKRU: 55555554 [ 4.227004] Call Trace: [ 4.227029] [ 4.227053] netdev_run_todo+0x21a/0x550 [ 4.227098] ops_undo_list+0x1e3/0x1f0 [ 4.227143] cleanup_net+0x1b7/0x300 [ 4.227187] process_one_work+0x162/0x380 [ 4.227237] worker_thread+0x299/0x3c0 [ 4.227277] ? rescuer_thread+0x4c0/0x4c0 [ 4.227320] kthread+0x101/0x1f0 [ 4.227356] ? kthreads_online_cpu+0x110/0x110 [ 4.227402] ? kthreads_online_cpu+0x110/0x110 [ 4.227460] ret_from_fork+0x11c/0x140 [ 4.227502] ? kthreads_online_cpu+0x110/0x110 [ 4.227554] ret_from_fork_asm+0x11/0x20 [ 4.227613] [ 4.227644] ---[ end trace 0000000000000000 ]--- [ 12.678150] mpls_gso: MPLS GSO support