------------[ cut here ]------------
refcount_t: saturated; leaking memory.
WARNING: CPU: 1 PID: 5697 at lib/refcount.c:19 refcount_warn_saturate+0xf4/0x1e0 lib/refcount.c:19
Modules linked in:
CPU: 1 PID: 5697 Comm: kworker/1:19 Not tainted 5.18.0-rc1-next-20220408-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events p9_read_work
RIP: 0010:refcount_warn_saturate+0xf4/0x1e0 lib/refcount.c:19
Code: 1d 41 fb b2 09 31 ff 89 de e8 a8 31 8a fd 84 db 75 ab e8 bf 2d 8a fd 48 c7 c7 e0 a4 26 8a c6 05 21 fb b2 09 01 e8 41 e7 2e 05 <0f> 0b eb 8f e8 a3 2d 8a fd 0f b6 1d 0b fb b2 09 31 ff 89 de e8 73
RSP: 0018:ffffc9000cd87b78 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88801dae1d40 RSI: ffffffff8160a278 RDI: fffff520019b0f61
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff81604c4e R11: 0000000000000000 R12: ffff88823bd66008
R13: dffffc0000000000 R14: 0000000000000000 R15: 00000000a9a8abaa
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200fc000 CR3: 00000000452c5000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __refcount_add_not_zero include/linux/refcount.h:163 [inline]
 __refcount_inc_not_zero include/linux/refcount.h:227 [inline]
 refcount_inc_not_zero include/linux/refcount.h:245 [inline]
 kref_get_unless_zero include/linux/kref.h:111 [inline]
 p9_req_try_get include/net/9p/client.h:235 [inline]
 p9_tag_lookup+0x2b3/0x570 net/9p/client.c:341
 p9_read_work+0x759/0x1020 net/9p/trans_fd.c:334
 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>