linux-kernel - Re: [syzbot] INFO: rcu detected stall in sys

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Message-ID: <000000000000444f7905ebd77b9e@google.com>
Date:   Tue, 25 Oct 2022 01:13:22 -0700
From:   syzbot <syzbot+1c02a56102605204445c@...kaller.appspotmail.com>
To:     hdanton@...a.com, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] INFO: rcu detected stall in sys_newfstatat (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: { P4081 } 2627 jiffies s: 2677 root: 0x0/T
rcu: blocking rcu_node structures (internal RCU debug):

Tested on:

commit:         a7038524 Merge tag 'perf_urgent_for_v6.1_rc2' of git:/..
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
console output: https://syzkaller.appspot.com/x/log.txt?x=11c5b8d6880000
kernel config:  https://syzkaller.appspot.com/x/.config?x=4789759e8a6d5f57
dashboard link: https://syzkaller.appspot.com/bug?extid=1c02a56102605204445c
compiler:       Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
patch:          https://syzkaller.appspot.com/x/patch.diff?x=13074bc2880000