[ 2.167460] sctp: Hash tables configured (bind 256/256) [ 24.154102] ------------[ cut here ]------------ [ 24.154183] refcount_t: underflow; use-after-free. [ 24.154253] WARNING: CPU: 0 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 24.154355] Modules linked in: sctp_diag sctp [ 24.154417] CPU: 0 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 24.154516] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 24.154586] Workqueue: netns cleanup_net [ 24.154641] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 24.154704] Code: 9f 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 95 9f 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 [ 24.154895] RSP: 0018:ffffad5d40257d50 EFLAGS: 00010286 [ 24.154953] RAX: 0000000000000000 RBX: ffffad5d40257d60 RCX: 00000000ffffdfff [ 24.155049] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 24.155136] RBP: ffffad5d40257858 R08: ffffffffa015ba28 R09: 00000000ffffdfff [ 24.155211] R10: ffffffffa007ba40 R11: ffffffffa012ba40 R12: dead000000000122 [ 24.155303] R13: 00000000fffbc9f4 R14: 0000000000000001 R15: ffff9f37043b2000 [ 24.155385] FS: 0000000000000000(0000) GS:ffff9f379e391000(0000) knlGS:0000000000000000 [ 24.155474] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.155550] CR2: 00007f9abadbe760 CR3: 000000002e446003 CR4: 0000000000772ef0 [ 24.155629] PKRU: 55555554 [ 24.155654] Call Trace: [ 24.155681] [ 24.155706] netdev_run_todo+0x21a/0x550 [ 24.155766] ops_undo_list+0x1e3/0x1f0 [ 24.155817] cleanup_net+0x1b7/0x300 [ 24.155862] process_one_work+0x162/0x380 [ 24.155910] worker_thread+0x299/0x3c0 [ 24.155951] ? rescuer_thread+0x4c0/0x4c0 [ 24.156003] kthread+0x101/0x1f0 [ 24.156060] ? kthreads_online_cpu+0x110/0x110 [ 24.156118] ? kthreads_online_cpu+0x110/0x110 [ 24.156174] ret_from_fork+0x11c/0x140 [ 24.156234] ? kthreads_online_cpu+0x110/0x110 [ 24.156294] ret_from_fork_asm+0x11/0x20 [ 24.156346] [ 24.156369] ---[ end trace 0000000000000000 ]---