[ 1.672987] ------------[ cut here ]------------ [ 1.673040] refcount_t: underflow; use-after-free. [ 1.673093] WARNING: CPU: 0 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.673155] Modules linked in: veth [ 1.673187] CPU: 0 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.673249] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.673291] Workqueue: netns cleanup_net [ 1.673323] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.673362] Code: 96 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 b1 96 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 [ 1.673480] RSP: 0018:ffff9e67c0257d50 EFLAGS: 00010286 [ 1.673514] RAX: 0000000000000000 RBX: ffff9e67c0257d60 RCX: 00000000ffffdfff [ 1.673564] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.673614] RBP: ffff9e67c0257880 R08: ffffffff96f56a28 R09: 00000000ffffdfff [ 1.673662] R10: ffffffff96e76a40 R11: ffffffff96f26a40 R12: dead000000000122 [ 1.673711] R13: 00000000fffb722b R14: 0000000000000001 R15: ffff8e1ac112f000 [ 1.673763] FS: 0000000000000000(0000) GS:ffff8e1b675e2000(0000) knlGS:0000000000000000 [ 1.673818] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.673865] CR2: 00007fdc83a16000 CR3: 0000000004e1c005 CR4: 0000000000772ef0 [ 1.673919] PKRU: 55555554 [ 1.673951] Call Trace: [ 1.673976] [ 1.673997] netdev_run_todo+0x21a/0x550 [ 1.674038] ops_undo_list+0x1e3/0x1f0 [ 1.674075] cleanup_net+0x1b7/0x2b0 [ 1.674100] process_one_work+0x162/0x380 [ 1.674135] worker_thread+0x299/0x3c0 [ 1.674166] ? rescuer_thread+0x4c0/0x4c0 [ 1.674199] kthread+0x101/0x1f0 [ 1.674235] ? kthreads_online_cpu+0x110/0x110 [ 1.674273] ? kthreads_online_cpu+0x110/0x110 [ 1.674307] ret_from_fork+0x11c/0x140 [ 1.674338] ? kthreads_online_cpu+0x110/0x110 [ 1.674381] ret_from_fork_asm+0x11/0x20 [ 1.674416] [ 1.674437] ---[ end trace 0000000000000000 ]---