[ 2.500152] ------------[ cut here ]------------ [ 2.500233] refcount_t: underflow; use-after-free. [ 2.500286] WARNING: CPU: 0 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.500373] Modules linked in: [ 2.500402] CPU: 0 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.500478] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.500529] Workqueue: netns cleanup_net [ 2.500569] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.500610] Code: 94 e8 e8 54 ba ff 90 0f 0b 90 90 c3 80 3d 00 e6 2b 01 00 75 89 c6 05 f7 e5 2b 01 01 90 48 c7 c7 f8 48 35 94 e8 c5 54 ba ff 90 <0f> 0b 90 90 c3 80 3d db e5 2b 01 00 0f 85 62 ff ff ff c6 05 ce e5 [ 2.500752] RSP: 0018:ffffbadac024fd50 EFLAGS: 00010286 [ 2.500789] RAX: 0000000000000000 RBX: ffffbadac024fd60 RCX: 00000000ffffdfff [ 2.500846] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.500907] RBP: ffffbadac024f858 R08: ffffffff94b5ba28 R09: 00000000ffffdfff [ 2.500976] R10: ffffffff94a7ba40 R11: ffffffff94b2ba40 R12: dead000000000122 [ 2.501054] R13: 00000000fffb7563 R14: 0000000000000001 R15: ffff950e4450a000 [ 2.501131] FS: 0000000000000000(0000) GS:ffff950ee9991000(0000) knlGS:0000000000000000 [ 2.501186] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.501229] CR2: 000055b9459c9d58 CR3: 00000000030fc004 CR4: 0000000000772ef0 [ 2.501281] PKRU: 55555554 [ 2.501298] Call Trace: [ 2.501318] [ 2.501339] netdev_run_todo+0x21a/0x550 [ 2.501374] ops_undo_list+0x1e3/0x1f0 [ 2.501411] cleanup_net+0x1b7/0x300 [ 2.501450] process_one_work+0x162/0x380 [ 2.501500] worker_thread+0x299/0x3c0 [ 2.501533] ? rescuer_thread+0x4c0/0x4c0 [ 2.501565] kthread+0x101/0x1f0 [ 2.501604] ? kthreads_online_cpu+0x110/0x110 [ 2.501639] ? kthreads_online_cpu+0x110/0x110 [ 2.501685] ret_from_fork+0x11c/0x140 [ 2.501730] ? kthreads_online_cpu+0x110/0x110 [ 2.501767] ret_from_fork_asm+0x11/0x20 [ 2.501816] [ 2.501833] ---[ end trace 0000000000000000 ]---