------------[ cut here ]------------ refcount_t: decrement hit 0; leaking memory. WARNING: CPU: 0 PID: 15 at lib/refcount.c:31 refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31 Modules linked in: CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 5.16.0-rc2-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31 Code: 1d 18 f4 a1 09 31 ff 89 de e8 9d f2 9c fd 84 db 75 e0 e8 b4 ee 9c fd 48 c7 c7 e0 d4 04 8a c6 05 f8 f3 a1 09 01 e8 db a5 25 05 <0f> 0b eb c4 e8 98 ee 9c fd 0f b6 1d e7 f3 a1 09 31 ff 89 de e8 68 RSP: 0018:ffffc9000040fc90 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888011433a00 RSI: ffffffff815f0c28 RDI: fffff52000081f84 RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff815ea9ce R11: 0000000000000000 R12: ffff88804de54000 R13: ffff88804de545b0 R14: dffffc0000000000 R15: ffff88804c7c4e68 FS: 0000000000000000(0000) GS:ffff88802ca00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056326b296950 CR3: 000000001e8d2000 CR4: 0000000000150ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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] fib_nh_common_release+0x2e5/0x330 net/ipv4/fib_semantics.c:211 fib_nh_release net/ipv4/fib_semantics.c:225 [inline] free_fib_info_rcu+0x24b/0x4e0 net/ipv4/fib_semantics.c:237 rcu_do_batch kernel/rcu/tree.c:2506 [inline] rcu_core+0x7ab/0x1470 kernel/rcu/tree.c:2741 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 run_ksoftirqd kernel/softirq.c:920 [inline] run_ksoftirqd+0x2d/0x60 kernel/softirq.c:912 smpboot_thread_fn+0x645/0x9c0 kernel/smpboot.c:164 kthread+0x405/0x4f0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295