linux-kernel - Re: [syzbot] possible deadlock in vfs_fileattr

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Date:   Sun, 13 Nov 2022 17:49:38 -0800
From:   syzbot <syzbot+abe01a74653f00aabe3e@...kaller.appspotmail.com>
To:     airlied@...ux.ie, daniel@...ll.ch, dri-devel@...ts.freedesktop.org,
        linux-graphics-maintainer@...are.com, linux-kernel@...r.kernel.org,
        reiserfs-devel@...r.kernel.org, sroland@...are.com,
        syzkaller-bugs@...glegroups.com, tzimmermann@...e.de,
        zackr@...are.com
Subject: Re: [syzbot] possible deadlock in vfs_fileattr_set

syzbot has bisected this issue to:

commit 6dd6b7643e723b4779e59c8ad97bd5db6ff3bb12
Author: Thomas Zimmermann <tzimmermann@...e.de>
Date:   Mon Jan 18 13:14:19 2021 +0000

    drm/vmwgfx: Remove reference to struct drm_device.pdev

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1418e6a5880000
start commit:   f8f60f322f06 Add linux-next specific files for 20221111
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1618e6a5880000
console output: https://syzkaller.appspot.com/x/log.txt?x=1218e6a5880000
kernel config:  https://syzkaller.appspot.com/x/.config?x=85ba52c07cd97289
dashboard link: https://syzkaller.appspot.com/bug?extid=abe01a74653f00aabe3e
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=138b76ae880000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16ab1bfe880000

Reported-by: syzbot+abe01a74653f00aabe3e@...kaller.appspotmail.com
Fixes: 6dd6b7643e72 ("drm/vmwgfx: Remove reference to struct drm_device.pdev")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection