[ 1.869607] ------------[ cut here ]------------ [ 1.869693] refcount_t: underflow; use-after-free. [ 1.869764] WARNING: CPU: 1 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.869855] Modules linked in: veth [ 1.869902] CPU: 1 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.870000] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.870056] Workqueue: netns cleanup_net [ 1.870096] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.870145] Code: aa 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 31 aa 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 [ 1.870312] RSP: 0018:ffffbbb50024fd50 EFLAGS: 00010286 [ 1.870362] RAX: 0000000000000000 RBX: ffffbbb50024fd60 RCX: 00000000ffffdfff [ 1.870444] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.870527] RBP: ffffbbb50024f880 R08: ffffffffaa756a28 R09: 00000000ffffdfff [ 1.870605] R10: ffffffffaa676a40 R11: ffffffffaa726a40 R12: dead000000000122 [ 1.870679] R13: 00000000fffb72e4 R14: 0000000000000001 R15: ffff8f7384701000 [ 1.870754] FS: 0000000000000000(0000) GS:ffff8f7414e62000(0000) knlGS:0000000000000000 [ 1.870825] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.870886] CR2: 00007ffa6fb2f000 CR3: 0000000004573001 CR4: 0000000000772ef0 [ 1.870957] PKRU: 55555554 [ 1.870984] Call Trace: [ 1.871014] [ 1.871045] netdev_run_todo+0x21a/0x550 [ 1.871094] ops_undo_list+0x1e3/0x1f0 [ 1.871132] cleanup_net+0x1b7/0x2b0 [ 1.871176] process_one_work+0x162/0x380 [ 1.871221] worker_thread+0x299/0x3c0 [ 1.871261] ? rescuer_thread+0x4c0/0x4c0 [ 1.871300] kthread+0x101/0x1f0 [ 1.871339] ? kthreads_online_cpu+0x110/0x110 [ 1.871389] ? kthreads_online_cpu+0x110/0x110 [ 1.871445] ret_from_fork+0x11c/0x140 [ 1.871487] ? kthreads_online_cpu+0x110/0x110 [ 1.871542] ret_from_fork_asm+0x11/0x20 [ 1.871594] [ 1.871620] ---[ end trace 0000000000000000 ]---