[ 1.870555] ------------[ cut here ]------------ [ 1.870629] refcount_t: underflow; use-after-free. [ 1.870705] WARNING: CPU: 3 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.870794] Modules linked in: veth [ 1.870836] CPU: 3 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.870930] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.870995] Workqueue: netns cleanup_net [ 1.871042] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.871096] Code: 9a 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 f1 9a 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 [ 1.871282] RSP: 0018:ffffa39d4024bd50 EFLAGS: 00010286 [ 1.871339] RAX: 0000000000000000 RBX: ffffa39d4024bd60 RCX: 00000000ffffdfff [ 1.871415] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.871491] RBP: ffffa39d4024b880 R08: ffffffff9b356a28 R09: 00000000ffffdfff [ 1.871573] R10: ffffffff9b276a40 R11: ffffffff9b326a40 R12: dead000000000122 [ 1.871648] R13: 00000000fffb72e8 R14: 0000000000000001 R15: ffff96b201f2f000 [ 1.871730] FS: 0000000000000000(0000) GS:ffff96b2a3362000(0000) knlGS:0000000000000000 [ 1.871817] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.871892] CR2: 00007fd3bf391658 CR3: 0000000005577006 CR4: 0000000000772ef0 [ 1.871972] PKRU: 55555554 [ 1.871997] Call Trace: [ 1.872023] [ 1.872049] netdev_run_todo+0x21a/0x550 [ 1.872098] ops_undo_list+0x1e3/0x1f0 [ 1.872136] cleanup_net+0x1b7/0x2b0 [ 1.872177] process_one_work+0x162/0x380 [ 1.872229] worker_thread+0x299/0x3c0 [ 1.872269] ? rescuer_thread+0x4c0/0x4c0 [ 1.872308] kthread+0x101/0x1f0 [ 1.872348] ? kthreads_online_cpu+0x110/0x110 [ 1.872409] ? kthreads_online_cpu+0x110/0x110 [ 1.872463] ret_from_fork+0x11c/0x140 [ 1.872514] ? kthreads_online_cpu+0x110/0x110 [ 1.872569] ret_from_fork_asm+0x11/0x20 [ 1.872617] [ 1.872643] ---[ end trace 0000000000000000 ]---