Received-SPF: pass (google.com: domain of linux-ext4-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
MIME-Version: 1.0
Date:   Thu, 06 Jul 2023 22:10:21 -0700
In-Reply-To: <000000000000a557cb05ff9ed03b@google.com>
Message-ID: <000000000000554b8205ffdea64e@google.com>
Subject: Re: [syzbot] [ext4?] general protection fault in ext4_finish_bio
From:   syzbot <syzbot+689ec3afb1ef07b766b2@syzkaller.appspotmail.com>
To:     adilger.kernel@dilger.ca, boqun.feng@gmail.com,
        dhowells@redhat.com, herbert@gondor.apana.org.au, kuba@kernel.org,
        linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        linux-kernel@vger.kernel.org, longman@redhat.com, mingo@redhat.com,
        netdev@vger.kernel.org, peterz@infradead.org,
        syzkaller-bugs@googlegroups.com, tytso@mit.edu, will@kernel.org
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

syzbot has bisected this issue to:

commit b6d972f6898308fbe7e693bf8d44ebfdb1cd2dc4
Author: David Howells <dhowells@redhat.com>
Date:   Fri Jun 16 11:10:32 2023 +0000

    crypto: af_alg/hash: Fix recvmsg() after sendmsg(MSG_MORE)

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=17e4fa88a80000
start commit:   ae230642190a Merge branch 'af_unix-followup-fixes-for-so_p..
git tree:       net-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1414fa88a80000
console output: https://syzkaller.appspot.com/x/log.txt?x=1014fa88a80000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c9bf1936936ca698
dashboard link: https://syzkaller.appspot.com/bug?extid=689ec3afb1ef07b766b2
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=136b9d48a80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=10223cb8a80000

Reported-by: syzbot+689ec3afb1ef07b766b2@syzkaller.appspotmail.com
Fixes: b6d972f68983 ("crypto: af_alg/hash: Fix recvmsg() after sendmsg(MSG_MORE)")

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