[ 2.289224] ip (255) used greatest stack depth: 12136 bytes left [ 2.443836] u32 classifier [ 2.443912] input device check on [ 2.443996] Actions configured [ 2.456564] Mirror/redirect action on [ 2.458330] tc (265) used greatest stack depth: 11824 bytes left [ 65.797911] ------------[ cut here ]------------ [ 65.797997] refcount_t: underflow; use-after-free. [ 65.798085] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 65.798171] Modules linked in: act_mirred cls_u32 sch_ingress ifb [ 65.798267] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 65.798344] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 65.798410] Workqueue: netns cleanup_net [ 65.798458] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 65.798517] Code: bd 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 bd 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 [ 65.798665] RSP: 0018:ffffa08580067d50 EFLAGS: 00010286 [ 65.798725] RAX: 0000000000000000 RBX: ffffa08580067d60 RCX: 00000000ffffdfff [ 65.798783] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 65.798875] RBP: ffffa08580067858 R08: ffffffffbdf5ba28 R09: 00000000ffffdfff [ 65.798938] R10: ffffffffbde7ba40 R11: ffffffffbdf2ba40 R12: dead000000000122 [ 65.799000] R13: 00000000fffc6c91 R14: 0000000000000001 R15: ffff89c445915000 [ 65.799066] FS: 0000000000000000(0000) GS:ffff89c4c0591000(0000) knlGS:0000000000000000 [ 65.799137] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 65.799200] CR2: 00007f5da0a47840 CR3: 000000001c046001 CR4: 0000000000772ef0 [ 65.799270] PKRU: 55555554 [ 65.799292] Call Trace: [ 65.799331] [ 65.799363] netdev_run_todo+0x21a/0x550 [ 65.799420] ops_undo_list+0x1e3/0x1f0 [ 65.799463] cleanup_net+0x1b7/0x300 [ 65.799512] process_one_work+0x162/0x380 [ 65.799574] worker_thread+0x299/0x3c0 [ 65.799624] ? rescuer_thread+0x4c0/0x4c0 [ 65.799661] kthread+0x101/0x1f0 [ 65.799706] ? kthreads_online_cpu+0x110/0x110 [ 65.799753] ? kthreads_online_cpu+0x110/0x110 [ 65.799804] ret_from_fork+0x11c/0x140 [ 65.799862] ? kthreads_online_cpu+0x110/0x110 [ 65.799910] ret_from_fork_asm+0x11/0x20 [ 65.799959] [ 65.799986] ---[ end trace 0000000000000000 ]---