linux-kernel - Re: [syzbot] WARNING in kernfs

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Message-ID: <00000000000033799605f3f11ffb@google.com>
Date:   Sun, 05 Feb 2023 02:10:19 -0800
From:   syzbot <syzbot+9be7b6c4b696be5d83ef@...kaller.appspotmail.com>
To:     hdanton@...a.com, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] WARNING in kernfs_get (4)

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: { P5555 } 2647 jiffies s: 2837 root: 0x0/T
rcu: blocking rcu_node structures (internal RCU debug):

Tested on:

commit:         837c07cf Merge tag 'powerpc-6.2-4' of git://git.kernel..
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=113f785d480000
kernel config:  https://syzkaller.appspot.com/x/.config?x=723d250bd16cf869
dashboard link: https://syzkaller.appspot.com/bug?extid=9be7b6c4b696be5d83ef
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=1369cb27480000