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

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Message-ID: <0000000000002dbc8d05ee968baf@google.com>
Date:   Mon, 28 Nov 2022 23:00:31 -0800
From:   syzbot <syzbot+8c7a4ca1cc31b7ce7070@...kaller.appspotmail.com>
To:     hdanton@...a.com, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] WARNING in iov_iter_revert (3)

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: { P4109 } 2690 jiffies s: 2793 root: 0x0/T
rcu: blocking rcu_node structures (internal RCU debug):


Tested on:

commit:         b7b275e6 Linux 6.1-rc7
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
console output: https://syzkaller.appspot.com/x/log.txt?x=15ab6753880000
kernel config:  https://syzkaller.appspot.com/x/.config?x=2325e409a9a893e1
dashboard link: https://syzkaller.appspot.com/bug?extid=8c7a4ca1cc31b7ce7070
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=100b6753880000