[ 1.926948] ------------[ cut here ]------------ [ 1.927015] refcount_t: underflow; use-after-free. [ 1.927084] WARNING: CPU: 1 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.927159] Modules linked in: [ 1.927196] CPU: 1 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.927266] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.927316] Workqueue: netns cleanup_net [ 1.927363] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.927416] Code: 9a 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 95 9a 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 [ 1.927556] RSP: 0018:ffffb05e00067d50 EFLAGS: 00010286 [ 1.927609] RAX: 0000000000000000 RBX: ffffb05e00067d60 RCX: 00000000ffffdfff [ 1.927668] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.927726] RBP: ffffb05e00067858 R08: ffffffff9b15ba28 R09: 00000000ffffdfff [ 1.927798] R10: ffffffff9b07ba40 R11: ffffffff9b12ba40 R12: dead000000000122 [ 1.927861] R13: 00000000fffb732a R14: 0000000000000001 R15: ffff89c685872000 [ 1.927922] FS: 0000000000000000(0000) GS:ffff89c723411000(0000) knlGS:0000000000000000 [ 1.927986] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.928040] CR2: 00007f107d56c600 CR3: 0000000005836006 CR4: 0000000000772ef0 [ 1.928102] PKRU: 55555554 [ 1.928127] Call Trace: [ 1.928149] [ 1.928173] netdev_run_todo+0x21a/0x550 [ 1.928210] ops_undo_list+0x1e3/0x1f0 [ 1.928245] cleanup_net+0x1b7/0x300 [ 1.928279] process_one_work+0x162/0x380 [ 1.928322] worker_thread+0x299/0x3c0 [ 1.928365] ? rescuer_thread+0x4c0/0x4c0 [ 1.928403] kthread+0x101/0x1f0 [ 1.928445] ? kthreads_online_cpu+0x110/0x110 [ 1.928490] ? kthreads_online_cpu+0x110/0x110 [ 1.928534] ret_from_fork+0x11c/0x140 [ 1.928574] ? kthreads_online_cpu+0x110/0x110 [ 1.928619] ret_from_fork_asm+0x11/0x20 [ 1.928658] [ 1.928682] ---[ end trace 0000000000000000 ]--- [ 1.953498] ip (262) used greatest stack depth: 12136 bytes left