[ 1.950234] ------------[ cut here ]------------ [ 1.950331] refcount_t: underflow; use-after-free. [ 1.950401] WARNING: CPU: 0 PID: 68 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.950496] Modules linked in: veth [ 1.950538] CPU: 0 UID: 0 PID: 68 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.950626] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.950701] Workqueue: netns cleanup_net [ 1.950745] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.950802] Code: b6 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 b6 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 [ 1.950977] RSP: 0018:ffff99c44025fd50 EFLAGS: 00010286 [ 1.951035] RAX: 0000000000000000 RBX: ffff99c44025fd60 RCX: 00000000ffffdfff [ 1.951111] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.951181] RBP: ffff99c44025f880 R08: ffffffffb6f56a28 R09: 00000000ffffdfff [ 1.951272] R10: ffffffffb6e76a40 R11: ffffffffb6f26a40 R12: dead000000000122 [ 1.951353] R13: 00000000fffb733e R14: 0000000000000001 R15: ffff8b70c4f01000 [ 1.951434] FS: 0000000000000000(0000) GS:ffff8b71475e2000(0000) knlGS:0000000000000000 [ 1.951515] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.951583] CR2: 00007f5cad7d64c0 CR3: 0000000003397001 CR4: 0000000000772ef0 [ 1.951657] PKRU: 55555554 [ 1.951688] Call Trace: [ 1.951712] [ 1.951742] netdev_run_todo+0x21a/0x550 [ 1.951794] ops_undo_list+0x1e3/0x1f0 [ 1.951835] cleanup_net+0x1b7/0x2b0 [ 1.951870] process_one_work+0x162/0x380 [ 1.951915] worker_thread+0x299/0x3c0 [ 1.951958] ? rescuer_thread+0x4c0/0x4c0 [ 1.951999] kthread+0x101/0x1f0 [ 1.952046] ? kthreads_online_cpu+0x110/0x110 [ 1.952096] ? kthreads_online_cpu+0x110/0x110 [ 1.952149] ret_from_fork+0x11c/0x140 [ 1.952199] ? kthreads_online_cpu+0x110/0x110 [ 1.952255] ret_from_fork_asm+0x11/0x20 [ 1.952301] [ 1.952323] ---[ end trace 0000000000000000 ]---