linux-kernel - Re: [syzbot] kernel BUG in __tlb_remove_page

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Date:   Sun, 05 Feb 2023 02:33:17 -0800
From:   syzbot <syzbot+d87dd8e018fd2cc2528b@...kaller.appspotmail.com>
To:     hdanton@...a.com, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] kernel BUG in __tlb_remove_page_size (2)

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: { P5557 } 2669 jiffies s: 2801 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=154a4f45480000
kernel config:  https://syzkaller.appspot.com/x/.config?x=5ea620bd01d9130d
dashboard link: https://syzkaller.appspot.com/bug?extid=d87dd8e018fd2cc2528b
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=116a0487480000