[ 2.398235] sctp: Hash tables configured (bind 256/256) [ 2.579331] ------------[ cut here ]------------ [ 2.579505] refcount_t: underflow; use-after-free. [ 2.579623] WARNING: CPU: 2 PID: 67 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.579740] Modules linked in: sctp [ 2.579821] CPU: 2 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.579963] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.580073] Workqueue: netns cleanup_net [ 2.580154] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.580233] Code: b4 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 75 b4 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 [ 2.580459] RSP: 0018:ffffb2cdc0257d50 EFLAGS: 00010286 [ 2.580538] RAX: 0000000000000000 RBX: ffffb2cdc0257d60 RCX: 00000000ffffdfff [ 2.580655] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.580772] RBP: ffffb2cdc0257858 R08: ffffffffb4f5ba28 R09: 00000000ffffdfff [ 2.580890] R10: ffffffffb4e7ba40 R11: ffffffffb4f2ba40 R12: dead000000000122 [ 2.580977] R13: 00000000fffb75b4 R14: 0000000000000001 R15: ffff89b385822000 [ 2.581111] FS: 0000000000000000(0000) GS:ffff89b409691000(0000) knlGS:0000000000000000 [ 2.581201] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.581295] CR2: 0000562c37e38938 CR3: 000000001f246002 CR4: 0000000000772ef0 [ 2.581380] PKRU: 55555554 [ 2.581443] Call Trace: [ 2.581494] [ 2.581545] netdev_run_todo+0x21a/0x550 [ 2.581611] ops_undo_list+0x1e3/0x1f0 [ 2.581671] cleanup_net+0x1b7/0x300 [ 2.581728] process_one_work+0x162/0x380 [ 2.581787] worker_thread+0x299/0x3c0 [ 2.581850] ? rescuer_thread+0x4c0/0x4c0 [ 2.581908] kthread+0x101/0x1f0 [ 2.581970] ? kthreads_online_cpu+0x110/0x110 [ 2.582055] ? kthreads_online_cpu+0x110/0x110 [ 2.582149] ret_from_fork+0x11c/0x140 [ 2.582226] ? kthreads_online_cpu+0x110/0x110 [ 2.582300] ret_from_fork_asm+0x11/0x20 [ 2.582363] [ 2.582411] ---[ end trace 0000000000000000 ]---