[ 2.410142] ------------[ cut here ]------------ [ 2.410219] refcount_t: underflow; use-after-free. [ 2.410290] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.410380] Modules linked in: [ 2.410427] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.410521] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.410586] Workqueue: netns cleanup_net [ 2.410637] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.410694] Code: 89 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 89 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 [ 2.410874] RSP: 0018:ffffbdeb40067d50 EFLAGS: 00010286 [ 2.410924] RAX: 0000000000000000 RBX: ffffbdeb40067d60 RCX: 00000000ffffdfff [ 2.410998] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.411086] RBP: ffffbdeb40067858 R08: ffffffff89b5ba28 R09: 00000000ffffdfff [ 2.411172] R10: ffffffff89a7ba40 R11: ffffffff89b2ba40 R12: dead000000000122 [ 2.411248] R13: 00000000fffb7501 R14: 0000000000000001 R15: ffff9a0a06805000 [ 2.411326] FS: 0000000000000000(0000) GS:ffff9a0ab4991000(0000) knlGS:0000000000000000 [ 2.411411] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.411475] CR2: 00005583c1188dec CR3: 0000000003b46003 CR4: 0000000000772ef0 [ 2.411554] PKRU: 55555554 [ 2.411587] Call Trace: [ 2.411617] [ 2.411649] netdev_run_todo+0x21a/0x550 [ 2.411699] ops_undo_list+0x1e3/0x1f0 [ 2.411748] cleanup_net+0x1b7/0x300 [ 2.411794] process_one_work+0x162/0x380 [ 2.411845] worker_thread+0x299/0x3c0 [ 2.411890] ? rescuer_thread+0x4c0/0x4c0 [ 2.411934] kthread+0x101/0x1f0 [ 2.411980] ? kthreads_online_cpu+0x110/0x110 [ 2.412038] ? kthreads_online_cpu+0x110/0x110 [ 2.412106] ret_from_fork+0x11c/0x140 [ 2.412155] ? kthreads_online_cpu+0x110/0x110 [ 2.412216] ret_from_fork_asm+0x11/0x20 [ 2.412264] [ 2.412288] ---[ end trace 0000000000000000 ]---