[ 2.566216] ------------[ cut here ]------------ [ 2.566300] refcount_t: underflow; use-after-free. [ 2.566361] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.566455] Modules linked in: [ 2.566499] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.566599] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.566667] Workqueue: netns cleanup_net [ 2.566716] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.566770] Code: 99 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 d5 99 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 [ 2.566960] RSP: 0018:ffffaf8500067d50 EFLAGS: 00010286 [ 2.567012] RAX: 0000000000000000 RBX: ffffaf8500067d60 RCX: 00000000ffffdfff [ 2.567099] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.567186] RBP: ffffaf8500067858 R08: ffffffff9a55ba28 R09: 00000000ffffdfff [ 2.567274] R10: ffffffff9a47ba40 R11: ffffffff9a52ba40 R12: dead000000000122 [ 2.567354] R13: 00000000fffb75a7 R14: 0000000000000001 R15: ffff9c48447d0000 [ 2.567435] FS: 0000000000000000(0000) GS:ffff9c48e3f91000(0000) knlGS:0000000000000000 [ 2.567521] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.567586] CR2: 00007fdddf9e8b60 CR3: 0000000004582006 CR4: 0000000000772ef0 [ 2.567666] PKRU: 55555554 [ 2.567690] Call Trace: [ 2.567716] [ 2.567743] netdev_run_todo+0x21a/0x550 [ 2.567783] ops_undo_list+0x1e3/0x1f0 [ 2.567829] cleanup_net+0x1b7/0x300 [ 2.567869] process_one_work+0x162/0x380 [ 2.567918] worker_thread+0x299/0x3c0 [ 2.567955] ? rescuer_thread+0x4c0/0x4c0 [ 2.567995] kthread+0x101/0x1f0 [ 2.568035] ? kthreads_online_cpu+0x110/0x110 [ 2.568088] ? kthreads_online_cpu+0x110/0x110 [ 2.568142] ret_from_fork+0x11c/0x140 [ 2.568194] ? kthreads_online_cpu+0x110/0x110 [ 2.568250] ret_from_fork_asm+0x11/0x20 [ 2.568302] [ 2.568324] ---[ end trace 0000000000000000 ]---