[ 1.799269] ------------[ cut here ]------------ [ 1.799343] refcount_t: underflow; use-after-free. [ 1.799408] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.799505] Modules linked in: veth [ 1.799552] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.799661] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.799731] Workqueue: netns cleanup_net [ 1.799782] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.799838] Code: 98 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 91 98 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 [ 1.800042] RSP: 0018:ffffbc3040067d50 EFLAGS: 00010286 [ 1.800099] RAX: 0000000000000000 RBX: ffffbc3040067d60 RCX: 00000000ffffdfff [ 1.800183] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.800269] RBP: ffffbc3040067880 R08: ffffffff98d56a28 R09: 00000000ffffdfff [ 1.800358] R10: ffffffff98c76a40 R11: ffffffff98d26a40 R12: dead000000000122 [ 1.800442] R13: 00000000fffb72a9 R14: 0000000000000001 R15: ffff9cc144ae4000 [ 1.800530] FS: 0000000000000000(0000) GS:ffff9cc1e57e2000(0000) knlGS:0000000000000000 [ 1.800622] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.800693] CR2: 00007f324116c000 CR3: 0000000004913001 CR4: 0000000000772ef0 [ 1.800779] PKRU: 55555554 [ 1.800809] Call Trace: [ 1.800826] [ 1.800851] netdev_run_todo+0x21a/0x550 [ 1.800897] ops_undo_list+0x1e3/0x1f0 [ 1.800944] cleanup_net+0x1b7/0x2b0 [ 1.800986] process_one_work+0x162/0x380 [ 1.801042] worker_thread+0x299/0x3c0 [ 1.801101] ? rescuer_thread+0x4c0/0x4c0 [ 1.801151] kthread+0x101/0x1f0 [ 1.801202] ? kthreads_online_cpu+0x110/0x110 [ 1.801261] ? kthreads_online_cpu+0x110/0x110 [ 1.801321] ret_from_fork+0x11c/0x140 [ 1.801374] ? kthreads_online_cpu+0x110/0x110 [ 1.801448] ret_from_fork_asm+0x11/0x20 [ 1.801505] [ 1.801532] ---[ end trace 0000000000000000 ]---