Re: [syzbot] [ext4?] WARNING in setattr_copy

From: syzbot
Date: Mon Sep 18 2023 - 06:51:50 EST


> On Fri, Sep 15, 2023 at 11:51:54PM -0700, syzbot wrote:
>> Hello,
>>
>> syzbot found the following issue on:
>>
>> HEAD commit: 3c13c772fc23 Add linux-next specific files for 20230912
>> git tree: linux-next
>> console+strace: https://syzkaller.appspot.com/x/log.txt?x=15b02b0c680000
>> kernel config: https://syzkaller.appspot.com/x/.config?x=f7149cbda1664bc5
>> dashboard link: https://syzkaller.appspot.com/bug?extid=450a6d7e0a2db0d8326a
>> compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
>> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=155b32b4680000
>> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12cf6028680000
>>
>> Downloadable assets:
>> disk image: https://storage.googleapis.com/syzbot-assets/eb6fbc71f83a/disk-3c13c772.raw.xz
>> vmlinux: https://storage.googleapis.com/syzbot-assets/2d671ade67d9/vmlinux-3c13c772.xz
>> kernel image: https://storage.googleapis.com/syzbot-assets/b2b7190a3a61/bzImage-3c13c772.xz
>>
>> The issue was bisected to:
>>
>> commit d6f106662147d78e9a439608e8deac7d046ca0fa
>> Author: Jeff Layton <jlayton@xxxxxxxxxx>
>> Date: Wed Aug 30 18:28:43 2023 +0000
>>
>> fs: have setattr_copy handle multigrain timestamps appropriately
>>
>> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1419f8d8680000
>> final oops: https://syzkaller.appspot.com/x/report.txt?x=1619f8d8680000
>> console output: https://syzkaller.appspot.com/x/log.txt?x=1219f8d8680000
>>
>> IMPORTANT: if you fix the issue, please add the following tag to the commit:
>> Reported-by: syzbot+450a6d7e0a2db0d8326a@xxxxxxxxxxxxxxxxxxxxxxxxx
>> Fixes: d6f106662147 ("fs: have setattr_copy handle multigrain timestamps appropriately")
>
> #syz unset subsystems: ext4
> #syz set subsystems: overlayfs

Command #1:
The following labels did not exist: subsystems:, ext4