[ 2.093659] ------------[ cut here ]------------ [ 2.093760] refcount_t: underflow; use-after-free. [ 2.093821] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 2.093907] Modules linked in: [ 2.093950] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 2.094024] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.094078] Workqueue: netns cleanup_net [ 2.094123] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 2.094165] Code: 96 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 b5 96 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 [ 2.094318] RSP: 0018:ffffa7c4c0067d50 EFLAGS: 00010286 [ 2.094362] RAX: 0000000000000000 RBX: ffffa7c4c0067d60 RCX: 00000000ffffdfff [ 2.094424] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 2.094485] RBP: ffffa7c4c0067858 R08: ffffffff9735ba28 R09: 00000000ffffdfff [ 2.094545] R10: ffffffff9727ba40 R11: ffffffff9732ba40 R12: dead000000000122 [ 2.094611] R13: 00000000fffb73cf R14: 0000000000000001 R15: ffff97b0c611d000 [ 2.094681] FS: 0000000000000000(0000) GS:ffff97b167191000(0000) knlGS:0000000000000000 [ 2.094755] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.094808] CR2: 000055dcc7528dec CR3: 0000000003f4b001 CR4: 0000000000772ef0 [ 2.094875] PKRU: 55555554 [ 2.094897] Call Trace: [ 2.094918] [ 2.094946] netdev_run_todo+0x21a/0x550 [ 2.094982] ops_undo_list+0x1e3/0x1f0 [ 2.095020] cleanup_net+0x1b7/0x300 [ 2.095056] process_one_work+0x162/0x380 [ 2.095096] worker_thread+0x299/0x3c0 [ 2.095132] ? rescuer_thread+0x4c0/0x4c0 [ 2.095165] kthread+0x101/0x1f0 [ 2.095199] ? kthreads_online_cpu+0x110/0x110 [ 2.095242] ? kthreads_online_cpu+0x110/0x110 [ 2.095285] ret_from_fork+0x11c/0x140 [ 2.095338] ? kthreads_online_cpu+0x110/0x110 [ 2.095389] ret_from_fork_asm+0x11/0x20 [ 2.095472] [ 2.095499] ---[ end trace 0000000000000000 ]--- [ 2.127818] ip (272) used greatest stack depth: 12136 bytes left