[ 1.902682] ------------[ cut here ]------------ [ 1.902808] refcount_t: underflow; use-after-free. [ 1.902870] WARNING: CPU: 3 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.902943] Modules linked in: veth [ 1.902983] CPU: 3 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.903053] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.903104] Workqueue: netns cleanup_net [ 1.903146] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.903192] Code: bb e8 f8 c3 ba ff 90 0f 0b 90 90 c3 80 3d 39 c1 eb 00 00 75 89 c6 05 30 c1 eb 00 01 90 48 c7 c7 30 a0 71 bb e8 d5 c3 ba ff 90 <0f> 0b 90 90 c3 80 3d 14 c1 eb 00 00 0f 85 62 ff ff ff c6 05 07 c1 [ 1.903331] RSP: 0018:ffff9aaf4024fd50 EFLAGS: 00010286 [ 1.903375] RAX: 0000000000000000 RBX: ffff9aaf4024fd60 RCX: 00000000ffffdfff [ 1.903447] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.903508] RBP: ffff9aaf4024f880 R08: ffffffffbbb56a28 R09: 00000000ffffdfff [ 1.903589] R10: ffffffffbba76a40 R11: ffffffffbbb26a40 R12: dead000000000122 [ 1.903654] R13: 00000000fffb7311 R14: 0000000000000001 R15: ffff8db284ce9000 [ 1.903731] FS: 0000000000000000(0000) GS:ffff8db302b62000(0000) knlGS:0000000000000000 [ 1.903810] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.903861] CR2: 0000000023fff688 CR3: 0000000004f4c005 CR4: 0000000000772ef0 [ 1.903919] PKRU: 55555554 [ 1.903943] Call Trace: [ 1.903963] [ 1.903987] netdev_run_todo+0x21a/0x550 [ 1.904029] ops_undo_list+0x1e3/0x1f0 [ 1.904065] cleanup_net+0x1b7/0x2b0 [ 1.904099] process_one_work+0x162/0x380 [ 1.904141] worker_thread+0x299/0x3c0 [ 1.904175] ? rescuer_thread+0x4c0/0x4c0 [ 1.904209] kthread+0x101/0x1f0 [ 1.904246] ? kthreads_online_cpu+0x110/0x110 [ 1.904289] ? kthreads_online_cpu+0x110/0x110 [ 1.904333] ret_from_fork+0x11c/0x140 [ 1.904369] ? kthreads_online_cpu+0x110/0x110 [ 1.904413] ret_from_fork_asm+0x11/0x20 [ 1.904457] [ 1.904481] ---[ end trace 0000000000000000 ]---