linux-kernel - Re: [syzbot] KASAN: use-after-free Read in rxrpc_destroy_all

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Message-ID: <0000000000000c17c905ef59bad4@google.com>
Date:   Thu, 08 Dec 2022 15:52:16 -0800
From:   syzbot <syzbot+1eb4232fca28c0a6d1c2@...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] KASAN: use-after-free Read in rxrpc_destroy_all_locals

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: { P4104 } 2661 jiffies s: 2777 root: 0x0/T
rcu: blocking rcu_node structures (internal RCU debug):


Tested on:

commit:         efb7555b rxrpc: Fix I/O thread stop
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/ afs-testing
console output: https://syzkaller.appspot.com/x/log.txt?x=16b83997880000
kernel config:  https://syzkaller.appspot.com/x/.config?x=fb14358c9774adf3
dashboard link: https://syzkaller.appspot.com/bug?extid=1eb4232fca28c0a6d1c2
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.