------------[ cut here ]------------
refcount_t: decrement hit 0; leaking memory.
WARNING: CPU: 1 PID: 8393 at lib/refcount.c:31 refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31
Modules linked in:
CPU: 1 PID: 8393 Comm: syz-fuzzer Not tainted 5.12.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31
Code: 1d 6a 5a e8 09 31 ff 89 de e8 8d 1a ab fd 84 db 75 e0 e8 d4 13 ab fd 48 c7 c7 a0 e1 c1 89 c6 05 4a 5a e8 09 01 e8 2e 36 fb 04 <0f> 0b eb c4 e8 b8 13 ab fd 0f b6 1d 39 5a e8 09 31 ff 89 de e8 58
RSP: 0000:ffffc900015ffd58 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888013820000 RSI: ffffffff815c51f5 RDI: fffff520002bff9d
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815bdf8e R11: 0000000000000000 R12: ffff88805aa8e000
R13: ffff88805aa8e568 R14: ffff8880260ee5e0 R15: 0000000000000000
FS:  000000c00002ec90(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000568000 CR3: 000000001bffe000 CR4: 00000000001506e0
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:4135 [inline]
 in_dev_finish_destroy+0x172/0x1b0 net/ipv4/devinet.c:244
 in_dev_put include/linux/inetdevice.h:265 [inline]
 in_dev_rcu_put+0x83/0xb0 net/ipv4/devinet.c:301
 rcu_do_batch kernel/rcu/tree.c:2559 [inline]
 rcu_core+0x74a/0x12f0 kernel/rcu/tree.c:2794
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:345
 invoke_softirq kernel/softirq.c:221 [inline]
 __irq_exit_rcu kernel/softirq.c:422 [inline]
 irq_exit_rcu+0x134/0x200 kernel/softirq.c:434
 sysvec_apic_timer_interrupt+0x45/0xc0 arch/x86/kernel/apic/apic.c:1100
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632
RIP: 0033:0x563ae8
Code: 24 50 48 8b 48 20 48 85 c9 0f 85 ce 00 00 00 48 8d 48 08 83 3d 88 b6 2f 01 00 0f 85 b3 00 00 00 48 89 0f 48 8b 08 48 8b 51 38 <48> 8b 59 40 48 8b 49 48 48 89 5f 10 48 89 4f 18 83 3d 61 b6 2f 01
RSP: 002b:000000c000e477e0 EFLAGS: 00000246
RAX: 000000c008d23e80 RBX: 0000000000000000 RCX: 00000000013153a0
RDX: 000000000104ba20 RSI: 0000000000000038 RDI: 000000c008d23f00
RBP: 000000c000e47820 R08: 00007fec18ddb1f9 R09: 0000000000203002
R10: 0000000000000002 R11: 0000000000000011 R12: 00000000000000f1
R13: 0000000000000000 R14: 00000000009408e1 R15: 0000000000000000