[ 2.449437] ------------[ cut here ]------------ [ 2.449524] refcount_t: underflow; use-after-free. [ 2.449584] WARNING: CPU: 1 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.449656] Modules linked in: [ 2.449693] CPU: 1 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.449764] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.449812] Workqueue: netns cleanup_net [ 2.449853] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.449898] 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 55 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 [ 2.450037] RSP: 0018:ffffb9fa00257d50 EFLAGS: 00010286 [ 2.450082] RAX: 0000000000000000 RBX: ffffb9fa00257d60 RCX: 00000000ffffdfff [ 2.450140] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.450204] RBP: ffffb9fa00257858 R08: ffffffff89d5ba28 R09: 00000000ffffdfff [ 2.450275] R10: ffffffff89c7ba40 R11: ffffffff89d2ba40 R12: dead000000000122 [ 2.450334] R13: 00000000fffb7535 R14: 0000000000000001 R15: ffff9cc184b8a000 [ 2.450409] FS: 0000000000000000(0000) GS:ffff9cc234811000(0000) knlGS:0000000000000000 [ 2.450477] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.450529] CR2: 0000562dd30a2dec CR3: 00000000069ea004 CR4: 0000000000772ef0 [ 2.450590] PKRU: 55555554 [ 2.450614] Call Trace: [ 2.450635] [ 2.450658] netdev_run_todo+0x21a/0x550 [ 2.450696] ops_undo_list+0x1e3/0x1f0 [ 2.450734] cleanup_net+0x1b7/0x300 [ 2.450769] process_one_work+0x162/0x380 [ 2.450811] worker_thread+0x299/0x3c0 [ 2.450845] ? rescuer_thread+0x4c0/0x4c0 [ 2.450880] kthread+0x101/0x1f0 [ 2.450916] ? kthreads_online_cpu+0x110/0x110 [ 2.450960] ? kthreads_online_cpu+0x110/0x110 [ 2.450998] ret_from_fork+0x11c/0x140 [ 2.451038] ? kthreads_online_cpu+0x110/0x110 [ 2.451082] ret_from_fork_asm+0x11/0x20 [ 2.451118] [ 2.451143] ---[ end trace 0000000000000000 ]---