linux-kernel - Re: [syzbot] [block?] [reiserfs?] KASAN: user-memory-access Write in zram_slot

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Message-ID: <00000000000026bdd305fc5918a5@google.com>
Date:   Tue, 23 May 2023 02:34:31 -0700
From:   syzbot <syzbot+b8d61a58b7c7ebd2c8e0@...kaller.appspotmail.com>
To:     akpm@...ux-foundation.org, axboe@...nel.dk, hch@....de,
        linux-block@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, minchan@...nel.org,
        reiserfs-devel@...r.kernel.org, senozhatsky@...omium.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [block?] [reiserfs?] KASAN: user-memory-access Write in zram_slot_lock

syzbot has bisected this issue to:

commit 9fe95babc7420722d39a1ded379027a1e1825d3a
Author: Christoph Hellwig <hch@....de>
Date:   Tue Apr 11 17:14:44 2023 +0000

    zram: remove valid_io_request

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=132fa586280000
start commit:   44c026a73be8 Linux 6.4-rc3
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=10afa586280000
console output: https://syzkaller.appspot.com/x/log.txt?x=172fa586280000
kernel config:  https://syzkaller.appspot.com/x/.config?x=7d8067683055e3f5
dashboard link: https://syzkaller.appspot.com/bug?extid=b8d61a58b7c7ebd2c8e0
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1223f7d9280000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1245326a280000

Reported-by: syzbot+b8d61a58b7c7ebd2c8e0@...kaller.appspotmail.com
Fixes: 9fe95babc742 ("zram: remove valid_io_request")

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