linux-kernel - Re: [syzbot] kernel BUG in rxrpc_put

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Message-ID: <0000000000004d21ce05f059d6be@google.com>
Date:   Wed, 21 Dec 2022 09:25:21 -0800
From:   syzbot <syzbot+c22650d2844392afdcfd@...kaller.appspotmail.com>
To:     davem@...emloft.net, dhowells@...hat.com, edumazet@...gle.com,
        kuba@...nel.org, linux-afs@...ts.infradead.org,
        linux-kernel@...r.kernel.org, marc.dionne@...istor.com,
        netdev@...r.kernel.org, pabeni@...hat.com,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] kernel BUG in rxrpc_put_peer

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.