------------[ cut here ]------------
refcount_t: addition on 0; use-after-free.
WARNING: CPU: 0 PID: 5391 at lib/refcount.c:25 refcount_warn_saturate+0x169/0x1e0 lib/refcount.c:25
Modules linked in:
CPU: 0 PID: 5391 Comm: kworker/u4:25 Not tainted 5.18.0-rc6-syzkaller-00007-g9be9ed2612b5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: krdsd rds_connect_worker
RIP: 0010:refcount_warn_saturate+0x169/0x1e0 lib/refcount.c:25
Code: 09 31 ff 89 de e8 97 44 81 fd 84 db 0f 85 36 ff ff ff e8 aa 40 81 fd 48 c7 c7 80 61 26 8a c6 05 0f 00 ad 09 01 e8 e7 f5 30 05 <0f> 0b e9 17 ff ff ff e8 8b 40 81 fd 0f b6 1d f4 ff ac 09 31 ff 89
RSP: 0018:ffffc90003e57b80 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8880242741c0 RSI: ffffffff815f4a18 RDI: fffff520007caf62
RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815ef3ee R11: 0000000000000000 R12: ffff88804379e040
R13: ffff888019ea9400 R14: ffff88804379e18c R15: ffff88802a516c80
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb38299bf64 CR3: 0000000075c9b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __refcount_add include/linux/refcount.h:199 [inline]
 __refcount_inc include/linux/refcount.h:250 [inline]
 refcount_inc include/linux/refcount.h:267 [inline]
 get_net include/net/net_namespace.h:248 [inline]
 get_net_track include/net/net_namespace.h:334 [inline]
 rds_tcp_tune+0x5a0/0x5f0 net/rds/tcp.c:503
 rds_tcp_conn_path_connect+0x489/0x880 net/rds/tcp_connect.c:127
 rds_connect_worker+0x1a5/0x2c0 net/rds/threads.c:176
 process_one_work+0x996/0x1610 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e9/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>
irq event stamp: 27632275
hardirqs last  enabled at (27632279): [<ffffffff815ee7b8>] __down_trylock_console_sem+0x108/0x120 kernel/printk/printk.c:247
hardirqs last disabled at (27632282): [<ffffffff815ee79a>] __down_trylock_console_sem+0xea/0x120 kernel/printk/printk.c:245
softirqs last  enabled at (27632050): [<ffffffff8146fa13>] invoke_softirq kernel/softirq.c:432 [inline]
softirqs last  enabled at (27632050): [<ffffffff8146fa13>] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637