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

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Message-ID: <000000000000c3758e06011be0d4@google.com>
Date:   Sat, 22 Jul 2023 16:38:26 -0700
From:   syzbot <syzbot+fc9127d4bfa8ef129f7d@...kaller.appspotmail.com>
To:     hdanton@...a.com, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [kernel?] INFO: rcu detected stall in drain_vmap_area_work

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: { 0-.... } 2688 jiffies s: 3401 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):


Tested on:

commit:         fdf0eaf1 Linux 6.5-rc2
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
console output: https://syzkaller.appspot.com/x/log.txt?x=173f89baa80000
kernel config:  https://syzkaller.appspot.com/x/.config?x=77b9a3cf8f44c6da
dashboard link: https://syzkaller.appspot.com/bug?extid=fc9127d4bfa8ef129f7d
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
patch:          https://syzkaller.appspot.com/x/patch.diff?x=12e2986ea80000