[ 4.370906] ------------[ cut here ]------------ [ 4.370966] refcount_t: underflow; use-after-free. [ 4.371020] WARNING: CPU: 0 PID: 68 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 4.371082] Modules linked in: [ 4.371114] CPU: 0 UID: 0 PID: 68 Comm: kworker/u16:1 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 4.371174] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 4.371226] Workqueue: netns cleanup_net [ 4.371260] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 4.371297] Code: 8c 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 8c 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 [ 4.371412] RSP: 0018:ffff9aeec025fd50 EFLAGS: 00010286 [ 4.371452] RAX: 0000000000000000 RBX: ffff9aeec025fd60 RCX: 00000000ffffdfff [ 4.371504] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 4.371549] RBP: ffff9aeec025f858 R08: ffffffff8cf5ba28 R09: 00000000ffffdfff [ 4.371601] R10: ffffffff8ce7ba40 R11: ffffffff8cf2ba40 R12: dead000000000122 [ 4.371648] R13: 00000000fffb7cb7 R14: 0000000000000001 R15: ffff8c8c84b23000 [ 4.371697] FS: 0000000000000000(0000) GS:ffff8c8d31591000(0000) knlGS:0000000000000000 [ 4.371752] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 4.371795] CR2: 000055edb672a378 CR3: 000000000615d003 CR4: 0000000000772ef0 [ 4.371849] PKRU: 55555554 [ 4.371870] Call Trace: [ 4.371889] [ 4.371910] netdev_run_todo+0x21a/0x550 [ 4.371944] ops_undo_list+0x1e3/0x1f0 [ 4.371981] cleanup_net+0x1b7/0x300 [ 4.372011] process_one_work+0x162/0x380 [ 4.372045] worker_thread+0x299/0x3c0 [ 4.372074] ? rescuer_thread+0x4c0/0x4c0 [ 4.372103] kthread+0x101/0x1f0 [ 4.372133] ? kthreads_online_cpu+0x110/0x110 [ 4.372173] ? kthreads_online_cpu+0x110/0x110 [ 4.372211] ret_from_fork+0x11c/0x140 [ 4.372240] ? kthreads_online_cpu+0x110/0x110 [ 4.372280] ret_from_fork_asm+0x11/0x20 [ 4.372316] [ 4.372335] ---[ end trace 0000000000000000 ]---