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

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Message-ID: <000000000000ca452805f04741f9@google.com>
Date:   Tue, 20 Dec 2022 11:15:20 -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: { P5782 } 2677 jiffies s: 2821 root: 0x0/T
rcu: blocking rcu_node structures (internal RCU debug):

Tested on:

commit:         2bc80899 rxrpc: Fix a couple of potential use-after-fr..
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=12729378480000
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.