[ 1.775592] ip (253) used greatest stack depth: 12200 bytes left [ 1.876508] ------------[ cut here ]------------ [ 1.876599] refcount_t: underflow; use-after-free. [ 1.876678] WARNING: CPU: 2 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 1.876766] Modules linked in: [ 1.876821] CPU: 2 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 1.876914] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.876984] Workqueue: netns cleanup_net [ 1.877042] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 1.877108] Code: 84 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 35 84 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 [ 1.877251] RSP: 0018:ffffb71700067d50 EFLAGS: 00010286 [ 1.877312] RAX: 0000000000000000 RBX: ffffb71700067d60 RCX: 00000000ffffdfff [ 1.877389] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 1.877478] RBP: ffffb71700067858 R08: ffffffff84b5ba28 R09: 00000000ffffdfff [ 1.877556] R10: ffffffff84a7ba40 R11: ffffffff84b2ba40 R12: dead000000000122 [ 1.877636] R13: 00000000fffb72f6 R14: 0000000000000001 R15: ffff9fc105d32000 [ 1.877715] FS: 0000000000000000(0000) GS:ffff9fc1b9a91000(0000) knlGS:0000000000000000 [ 1.877801] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.877873] CR2: 0000563ab820b898 CR3: 0000000015a46002 CR4: 0000000000772ef0 [ 1.877955] PKRU: 55555554 [ 1.878001] Call Trace: [ 1.878046] [ 1.878091] netdev_run_todo+0x21a/0x550 [ 1.878150] ops_undo_list+0x1e3/0x1f0 [ 1.878204] cleanup_net+0x1b7/0x300 [ 1.878260] process_one_work+0x162/0x380 [ 1.878339] worker_thread+0x299/0x3c0 [ 1.878418] ? rescuer_thread+0x4c0/0x4c0 [ 1.878491] kthread+0x101/0x1f0 [ 1.878563] ? kthreads_online_cpu+0x110/0x110 [ 1.878653] ? kthreads_online_cpu+0x110/0x110 [ 1.878719] ret_from_fork+0x11c/0x140 [ 1.878780] ? kthreads_online_cpu+0x110/0x110 [ 1.878845] ret_from_fork_asm+0x11/0x20 [ 1.878906] [ 1.878950] ---[ end trace 0000000000000000 ]--- [ 3.376362] ip (365) used greatest stack depth: 12136 bytes left [ 4.487600] IPv4: Oversized IP packet from 172.17.0.2