[ 2.272385] ------------[ cut here ]------------ [ 2.272469] refcount_t: underflow; use-after-free. [ 2.272553] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.272635] Modules linked in: [ 2.272684] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.272779] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.272831] Workqueue: netns cleanup_net [ 2.272882] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.272933] Code: a3 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 a3 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 [ 2.273096] RSP: 0018:ffffa3eac0067d50 EFLAGS: 00010286 [ 2.273148] RAX: 0000000000000000 RBX: ffffa3eac0067d60 RCX: 00000000ffffdfff [ 2.273224] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.273304] RBP: ffffa3eac0067858 R08: ffffffffa435ba28 R09: 00000000ffffdfff [ 2.273385] R10: ffffffffa427ba40 R11: ffffffffa432ba40 R12: dead000000000122 [ 2.273471] R13: 00000000fffb7482 R14: 0000000000000001 R15: ffff945e8615d000 [ 2.273548] FS: 0000000000000000(0000) GS:ffff945f1a191000(0000) knlGS:0000000000000000 [ 2.273632] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.273698] CR2: 0000557b7f8b8dec CR3: 00000000060cb005 CR4: 0000000000772ef0 [ 2.273772] PKRU: 55555554 [ 2.273797] Call Trace: [ 2.273817] [ 2.273847] netdev_run_todo+0x21a/0x550 [ 2.273892] ops_undo_list+0x1e3/0x1f0 [ 2.273937] cleanup_net+0x1b7/0x300 [ 2.273981] process_one_work+0x162/0x380 [ 2.274027] worker_thread+0x299/0x3c0 [ 2.274070] ? rescuer_thread+0x4c0/0x4c0 [ 2.274111] kthread+0x101/0x1f0 [ 2.274155] ? kthreads_online_cpu+0x110/0x110 [ 2.274210] ? kthreads_online_cpu+0x110/0x110 [ 2.274269] ret_from_fork+0x11c/0x140 [ 2.274324] ? kthreads_online_cpu+0x110/0x110 [ 2.274386] ret_from_fork_asm+0x11/0x20 [ 2.274433] [ 2.274458] ---[ end trace 0000000000000000 ]--- [ 2.313152] ip (272) used greatest stack depth: 12136 bytes left