linux-kernel - Re: [syzbot] WARNING: refcount bug in nldev

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Message-ID: <0000000000005d216f05ef8b0a6e@google.com>
Date:   Sun, 11 Dec 2022 02:42:16 -0800
From:   syzbot <syzbot+3fd8326d9a0812d19218@...kaller.appspotmail.com>
To:     hdanton@...a.com, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] WARNING: refcount bug in nldev_newlink

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: { P5545 } 2629 jiffies s: 2809 root: 0x0/T
rcu: blocking rcu_node structures (internal RCU debug):


Tested on:

commit:         591cd615 Add linux-next specific files for 20221207
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
console output: https://syzkaller.appspot.com/x/log.txt?x=13b5948f880000
kernel config:  https://syzkaller.appspot.com/x/.config?x=8b2d3e63e054c24f
dashboard link: https://syzkaller.appspot.com/bug?extid=3fd8326d9a0812d19218
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
patch:          https://syzkaller.appspot.com/x/patch.diff?x=1119320b880000