------------[ cut here ]------------ refcount_t: decrement hit 0; leaking memory. WARNING: CPU: 0 PID: 13 at lib/refcount.c:31 refcount_warn_saturate+0x17c/0x1a0 lib/refcount.c:31 Modules linked in: CPU: 0 PID: 13 Comm: ksoftirqd/0 Not tainted 5.16.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:refcount_warn_saturate+0x17c/0x1a0 lib/refcount.c:31 Code: f4 8a 31 c0 e8 d5 46 38 fd 0f 0b e9 64 ff ff ff e8 29 6b 6e fd c6 05 a6 40 f5 09 01 48 c7 c7 80 fe f4 8a 31 c0 e8 b4 46 38 fd <0f> 0b e9 43 ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c a2 fe ff RSP: 0018:ffffc90000d27a58 EFLAGS: 00010246 RAX: f5388fe27a1df300 RBX: 0000000000000004 RCX: ffff888012440000 RDX: 0000000080000100 RSI: 0000000080000100 RDI: 0000000000000000 RBP: 0000000000000004 R08: ffffffff8169fb82 R09: ffffed10173467b1 R10: ffffed10173467b1 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff888038c82000 R14: ffff888038c825b0 R15: ffff88801e291c00 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1fdfaede40 CR3: 000000000ca8e000 CR4: 00000000003506f0 DR0: 0080ffff00000000 DR1: 0080ffff00000000 DR2: 0080ffff00000000 DR3: 0080ffff00000000 DR6: 00000000ffff0ff0 DR7: 000000000ddd062a Call Trace: __refcount_dec include/linux/refcount.h:344 [inline] refcount_dec include/linux/refcount.h:359 [inline] dev_put include/linux/netdevice.h:4166 [inline] in_dev_finish_destroy+0x16d/0x190 net/ipv4/devinet.c:246 rcu_do_batch kernel/rcu/tree.c:2506 [inline] rcu_core+0x9b8/0x1610 kernel/rcu/tree.c:2741 __do_softirq+0x392/0x7a3 kernel/softirq.c:558 run_ksoftirqd+0xc1/0x120 kernel/softirq.c:920 smpboot_thread_fn+0x533/0x9d0 kernel/smpboot.c:164 kthread+0x468/0x490 kernel/kthread.c:327 ret_from_fork+0x1f/0x30