From: Edward Adam Davis <eadavis@sina.com>
To: syzbot+1dbed5969931c19d3eb5@syzkaller.appspotmail.com
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [ceph?] kernel BUG in __open_session
Date: Fri, 11 Sep 2026 21:01:07 +0800 [thread overview]
Message-ID: <20260911130108.859638-1-eadavis@sina.com> (raw)
In-Reply-To: <6aa30f2a.f81106d8.2ab401.0013.GAE@google.com>
From: Edward Aadm Davis <eadavis@sina.com>
#syz test: upstream 50d05c7c76c9
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index 72935f665f11..0f20d6c5e4bd 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -818,7 +818,11 @@ static struct ceph_fs_client *create_fs_client(struct ceph_mount_options *fsopt,
struct ceph_options *opt)
{
struct ceph_fs_client *fsc;
- int err;
+ int err, num_mon;
+
+ num_mon = opt->num_mon;
+ if (num_mon == 0 || num_mon > CEPH_MAX_MON)
+ return ERR_PTR(-EINVAL);
fsc = kzalloc_obj(*fsc);
if (!fsc) {
next prev parent reply other threads:[~2026-09-11 13:03 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-10 20:12 syzbot
2026-09-11 13:01 ` Edward Adam Davis [this message]
2026-09-11 13:23 ` syzbot
2026-09-11 13:57 ` [PATCH] ceph: reject create client if no monitor Edward Adam Davis
2026-09-11 14:01 ` [PATCH v2] " Edward Adam Davis
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