[ 2.000192] ------------[ cut here ]------------ [ 2.000322] refcount_t: underflow; use-after-free. [ 2.000392] WARNING: CPU: 0 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.000487] Modules linked in: veth [ 2.000529] CPU: 0 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.000629] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.000697] Workqueue: netns cleanup_net [ 2.000745] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.000805] Code: 90 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 d1 90 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 [ 2.000991] RSP: 0018:ffffadc58024fd50 EFLAGS: 00010286 [ 2.001049] RAX: 0000000000000000 RBX: ffffadc58024fd60 RCX: 00000000ffffdfff [ 2.001137] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.001220] RBP: ffffadc58024f880 R08: ffffffff91156a28 R09: 00000000ffffdfff [ 2.001302] R10: ffffffff91076a40 R11: ffffffff91126a40 R12: dead000000000122 [ 2.001382] R13: 00000000fffb7366 R14: 0000000000000001 R15: ffff9f14c5841000 [ 2.001464] FS: 0000000000000000(0000) GS:ffff9f156d3e2000(0000) knlGS:0000000000000000 [ 2.001549] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.001615] CR2: 00007fdd25603000 CR3: 00000000032b5001 CR4: 0000000000772ef0 [ 2.001698] PKRU: 55555554 [ 2.001731] Call Trace: [ 2.001760] [ 2.001784] netdev_run_todo+0x21a/0x550 [ 2.001835] ops_undo_list+0x1e3/0x1f0 [ 2.001882] cleanup_net+0x1b7/0x2b0 [ 2.001923] process_one_work+0x162/0x380 [ 2.001971] worker_thread+0x299/0x3c0 [ 2.002011] ? rescuer_thread+0x4c0/0x4c0 [ 2.002050] kthread+0x101/0x1f0 [ 2.002091] ? kthreads_online_cpu+0x110/0x110 [ 2.002149] ? kthreads_online_cpu+0x110/0x110 [ 2.002226] ret_from_fork+0x11c/0x140 [ 2.002266] ? kthreads_online_cpu+0x110/0x110 [ 2.002320] ret_from_fork_asm+0x11/0x20 [ 2.002368] [ 2.002394] ---[ end trace 0000000000000000 ]---