[ 1.975048] ------------[ cut here ]------------ [ 1.975118] refcount_t: underflow; use-after-free. [ 1.975173] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.975254] Modules linked in: [ 1.975293] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.975366] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.975430] Workqueue: netns cleanup_net [ 1.975480] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.975525] Code: af 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 af 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 [ 1.975665] RSP: 0018:ffffbe4600067d50 EFLAGS: 00010286 [ 1.975717] RAX: 0000000000000000 RBX: ffffbe4600067d60 RCX: 00000000ffffdfff [ 1.975780] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.975842] RBP: ffffbe4600067858 R08: ffffffffb035ba28 R09: 00000000ffffdfff [ 1.975905] R10: ffffffffb027ba40 R11: ffffffffb032ba40 R12: dead000000000122 [ 1.975962] R13: 00000000fffb735a R14: 0000000000000001 R15: ffff9af0843b7000 [ 1.976035] FS: 0000000000000000(0000) GS:ffff9af10e191000(0000) knlGS:0000000000000000 [ 1.976111] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.976165] CR2: 00007f64a3d31fd0 CR3: 00000000042fa001 CR4: 0000000000772ef0 [ 1.976223] PKRU: 55555554 [ 1.976247] Call Trace: [ 1.976276] [ 1.976298] netdev_run_todo+0x21a/0x550 [ 1.976337] ops_undo_list+0x1e3/0x1f0 [ 1.976384] cleanup_net+0x1b7/0x300 [ 1.976416] process_one_work+0x162/0x380 [ 1.976465] worker_thread+0x299/0x3c0 [ 1.976501] ? rescuer_thread+0x4c0/0x4c0 [ 1.976537] kthread+0x101/0x1f0 [ 1.976572] ? kthreads_online_cpu+0x110/0x110 [ 1.976619] ? kthreads_online_cpu+0x110/0x110 [ 1.976657] ret_from_fork+0x11c/0x140 [ 1.976698] ? kthreads_online_cpu+0x110/0x110 [ 1.976736] ret_from_fork_asm+0x11/0x20 [ 1.976774] [ 1.976799] ---[ end trace 0000000000000000 ]---