[ 2.277460] ------------[ cut here ]------------ [ 2.277568] refcount_t: underflow; use-after-free. [ 2.277638] WARNING: CPU: 0 PID: 66 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.277724] Modules linked in: [ 2.277757] CPU: 0 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.277862] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.277920] Workqueue: netns cleanup_net [ 2.277967] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.278027] Code: a2 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 a2 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 [ 2.278192] RSP: 0018:ffffb3b48024fd50 EFLAGS: 00010286 [ 2.278238] RAX: 0000000000000000 RBX: ffffb3b48024fd60 RCX: 00000000ffffdfff [ 2.278308] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.278399] RBP: ffffb3b48024f858 R08: ffffffffa2d5ba28 R09: 00000000ffffdfff [ 2.278476] R10: ffffffffa2c7ba40 R11: ffffffffa2d2ba40 R12: dead000000000122 [ 2.278569] R13: 00000000fffb7473 R14: 0000000000000001 R15: ffff965a45c1a000 [ 2.278631] FS: 0000000000000000(0000) GS:ffff965adb791000(0000) knlGS:0000000000000000 [ 2.278709] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.278757] CR2: 00007f1cd9556600 CR3: 0000000004ec9004 CR4: 0000000000772ef0 [ 2.278830] PKRU: 55555554 [ 2.278872] Call Trace: [ 2.278909] [ 2.278932] netdev_run_todo+0x21a/0x550 [ 2.278968] ops_undo_list+0x1e3/0x1f0 [ 2.279031] cleanup_net+0x1b7/0x300 [ 2.279074] process_one_work+0x162/0x380 [ 2.279131] worker_thread+0x299/0x3c0 [ 2.279195] ? rescuer_thread+0x4c0/0x4c0 [ 2.279255] kthread+0x101/0x1f0 [ 2.279313] ? kthreads_online_cpu+0x110/0x110 [ 2.279353] ? kthreads_online_cpu+0x110/0x110 [ 2.279406] ret_from_fork+0x11c/0x140 [ 2.279479] ? kthreads_online_cpu+0x110/0x110 [ 2.279521] ret_from_fork_asm+0x11/0x20 [ 2.279560] [ 2.279605] ---[ end trace 0000000000000000 ]--- [ 5.335664] IPv4: Oversized IP packet from 172.17.0.2