[ 1.814388] ------------[ cut here ]------------ [ 1.814526] refcount_t: underflow; use-after-free. [ 1.814589] WARNING: CPU: 0 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.814699] Modules linked in: veth [ 1.814735] CPU: 0 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.814822] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.814907] Workqueue: netns cleanup_net [ 1.814963] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.815010] Code: 9c e8 f8 c3 ba ff 90 0f 0b 90 90 c3 80 3d 39 c1 eb 00 00 75 89 c6 05 30 c1 eb 00 01 90 48 c7 c7 30 a0 31 9c e8 d5 c3 ba ff 90 <0f> 0b 90 90 c3 80 3d 14 c1 eb 00 00 0f 85 62 ff ff ff c6 05 07 c1 [ 1.815184] RSP: 0018:ffffbd458024fd50 EFLAGS: 00010286 [ 1.815234] RAX: 0000000000000000 RBX: ffffbd458024fd60 RCX: 00000000ffffdfff [ 1.815303] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.815383] RBP: ffffbd458024f880 R08: ffffffff9c756a28 R09: 00000000ffffdfff [ 1.815457] R10: ffffffff9c676a40 R11: ffffffff9c726a40 R12: dead000000000122 [ 1.815514] R13: 00000000fffb72b2 R14: 0000000000000001 R15: ffff9bce05209000 [ 1.815577] FS: 0000000000000000(0000) GS:ffff9bcea1de2000(0000) knlGS:0000000000000000 [ 1.815649] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.815708] CR2: 00007f79f277f000 CR3: 00000000050d4002 CR4: 0000000000772ef0 [ 1.815782] PKRU: 55555554 [ 1.815801] Call Trace: [ 1.815821] [ 1.815847] netdev_run_todo+0x21a/0x550 [ 1.815894] ops_undo_list+0x1e3/0x1f0 [ 1.815937] cleanup_net+0x1b7/0x2b0 [ 1.815976] process_one_work+0x162/0x380 [ 1.816022] worker_thread+0x299/0x3c0 [ 1.816066] ? rescuer_thread+0x4c0/0x4c0 [ 1.816104] kthread+0x101/0x1f0 [ 1.817741] ? kthreads_online_cpu+0x110/0x110 [ 1.817829] ? kthreads_online_cpu+0x110/0x110 [ 1.817872] ret_from_fork+0x11c/0x140 [ 1.817913] ? kthreads_online_cpu+0x110/0x110 [ 1.817962] ret_from_fork_asm+0x11/0x20 [ 1.818000] [ 1.818025] ---[ end trace 0000000000000000 ]---