[syzbot] kernel BUG in rxrpc_put_peer

[syzbot]

Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
INFO: rcu detected stall in corrupted

rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P5786 } 2640 jiffies s: 2805 root: 0x0/T
rcu: blocking rcu_node structures (internal RCU debug):


Tested on:

commit:         97f46a2a afs: Fix lost servers_outstanding count
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/
console output: https://syzkaller.appspot.com/x/log.txt?x=16357637880000
kernel config:  https://syzkaller.appspot.com/x/.config?x=b0e91ad4b5f69c47
dashboard link: https://syzkaller.appspot.com/bug?extid=c22650d2844392afdcfd
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

Note: no patches were applied.