linux-kernel - Re: WARNING in ext4_da_update_reserve

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Date:   Sat, 04 Apr 2020 15:13:04 -0700
From:   syzbot <syzbot+67e4f16db666b1c8253c@...kaller.appspotmail.com>
To:     a@...table.cc, adilger.kernel@...ger.ca,
        b.a.t.m.a.n@...tynna.open-mesh.org, benh@...nel.crashing.org,
        davem@...emloft.net, linux-ext4@...r.kernel.org,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        mareklindner@...mailbox.ch, mpe@...erman.id.au,
        muriloo@...ux.ibm.com, netdev@...r.kernel.org, paulus@...ba.org,
        sw@...onwunderlich.de, syzkaller-bugs@...glegroups.com,
        tytso@....edu
Subject: Re: WARNING in ext4_da_update_reserve_space

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger crash:

Reported-and-tested-by: syzbot+67e4f16db666b1c8253c@...kaller.appspotmail.com

Tested on:

commit:         54d3adbc ext4: save all error info in save_error_info() an..
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev
kernel config:  https://syzkaller.appspot.com/x/.config?x=4527d1e2fb19fd5c
dashboard link: https://syzkaller.appspot.com/bug?extid=67e4f16db666b1c8253c
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)

Note: testing is done by a robot and is best-effort only.