[ 13.463571] ------------[ cut here ]------------ [ 13.463630] refcount_t: underflow; use-after-free. [ 13.463687] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 13.463752] Modules linked in: [ 13.463784] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 13.463849] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.463896] Workqueue: netns cleanup_net [ 13.463932] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 13.463970] Code: 8f 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 55 8f 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 [ 13.464092] RSP: 0018:ffffb455c0067d50 EFLAGS: 00010286 [ 13.464132] RAX: 0000000000000000 RBX: ffffb455c0067d60 RCX: 00000000ffffdfff [ 13.464188] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 13.464238] RBP: ffffb455c0067858 R08: ffffffff8fd5ba28 R09: 00000000ffffdfff [ 13.464302] R10: ffffffff8fc7ba40 R11: ffffffff8fd2ba40 R12: dead000000000122 [ 13.464358] R13: 00000000fffba039 R14: 0000000000000001 R15: ffff9c07833f7000 [ 13.464416] FS: 0000000000000000(0000) GS:ffff9c082e791000(0000) knlGS:0000000000000000 [ 13.464472] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 13.464521] CR2: 0000555cb2d27868 CR3: 000000000304f005 CR4: 0000000000772ef0 [ 13.464579] PKRU: 55555554 [ 13.464600] Call Trace: [ 13.464625] [ 13.464646] netdev_run_todo+0x21a/0x550 [ 13.464683] ops_undo_list+0x1e3/0x1f0 [ 13.464716] cleanup_net+0x1b7/0x300 [ 13.464746] process_one_work+0x162/0x380 [ 13.464781] worker_thread+0x299/0x3c0 [ 13.464815] ? rescuer_thread+0x4c0/0x4c0 [ 13.464847] kthread+0x101/0x1f0 [ 13.464878] ? kthreads_online_cpu+0x110/0x110 [ 13.464917] ? kthreads_online_cpu+0x110/0x110 [ 13.464956] ret_from_fork+0x11c/0x140 [ 13.464988] ? kthreads_online_cpu+0x110/0x110 [ 13.465027] ret_from_fork_asm+0x11/0x20 [ 13.465061] [ 13.465082] ---[ end trace 0000000000000000 ]---