[ 1.712143] ------------[ cut here ]------------ [ 1.712241] refcount_t: underflow; use-after-free. [ 1.712290] WARNING: CPU: 3 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.712370] Modules linked in: veth [ 1.712403] CPU: 3 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.712470] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.712519] Workqueue: netns cleanup_net [ 1.712562] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.712618] Code: 84 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 71 84 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 [ 1.712744] RSP: 0018:ffffaa280024fd50 EFLAGS: 00010286 [ 1.712785] RAX: 0000000000000000 RBX: ffffaa280024fd60 RCX: 00000000ffffdfff [ 1.712841] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.712904] RBP: ffffaa280024f880 R08: ffffffff84b56a28 R09: 00000000ffffdfff [ 1.712954] R10: ffffffff84a76a40 R11: ffffffff84b26a40 R12: dead000000000122 [ 1.713009] R13: 00000000fffb7249 R14: 0000000000000001 R15: ffff9a1305681000 [ 1.713068] FS: 0000000000000000(0000) GS:ffff9a13b9b62000(0000) knlGS:0000000000000000 [ 1.713154] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.713203] CR2: 00007f97d25e1000 CR3: 000000000565d003 CR4: 0000000000772ef0 [ 1.713272] PKRU: 55555554 [ 1.713294] Call Trace: [ 1.713313] [ 1.713337] netdev_run_todo+0x21a/0x550 [ 1.713377] ops_undo_list+0x1e3/0x1f0 [ 1.713410] cleanup_net+0x1b7/0x2b0 [ 1.713441] process_one_work+0x162/0x380 [ 1.713477] worker_thread+0x299/0x3c0 [ 1.713509] ? rescuer_thread+0x4c0/0x4c0 [ 1.713540] kthread+0x101/0x1f0 [ 1.713581] ? kthreads_online_cpu+0x110/0x110 [ 1.713629] ? kthreads_online_cpu+0x110/0x110 [ 1.713684] ret_from_fork+0x11c/0x140 [ 1.713720] ? kthreads_online_cpu+0x110/0x110 [ 1.713759] ret_from_fork_asm+0x11/0x20 [ 1.713798] [ 1.713818] ---[ end trace 0000000000000000 ]---