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AHgh+RpLV+yA0NVYJ9sF4thD1o0ddp7H1tjK+hjkpkmRPSaYn6ILOPjg5677VGsBUxV9ZMdnETRlEVOmDmm1GKA=@vger.kernel.org X-Gm-Message-State: AOJu0YyQT2FgqHifaEABqM1hiI0lb9PwEng5mTb4Wpt5MyMI/8tAa9Bk OobymURa6DeOzNUPTfs9RTm3PfagsUGfLhWaDloFpa2is/ab4APqvR8gTjhXrAfpwH6T3ukRy6S C0+XHYdZpu2kf3fgKHU1I392VBIeAYjWEaK4k+GKi2dIMhbkqGNp6TCeWK54= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:1990:b0:6ae:84e6:2de0 with SMTP id 006d021491bc7-6b042143dd7mr270707eaf.26.1786113450239; Fri, 07 Aug 2026 07:37:30 -0700 (PDT) Date: Fri, 07 Aug 2026 07:37:30 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a75edaa.01d0871a.3a0d52.004b.GAE@google.com> Subject: [syzbot] [ceph?] WARNING in ceph_con_v1_try_read From: syzbot To: amarkuze@redhat.com, ceph-devel@vger.kernel.org, idryomov@gmail.com, linux-kernel@vger.kernel.org, slava@dubeyko.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 075b74841bd0 Linux 7.2-rc6 git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=118743b9580000 kernel config: https://syzkaller.appspot.com/x/.config?x=cb17729fb04b1e3a dashboard link: https://syzkaller.appspot.com/bug?extid=21f8628595b2061c438d compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1085de32580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1485de32580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/678e77cc37b9/disk-075b7484.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/cc9f771e7069/vmlinux-075b7484.xz kernel image: https://storage.googleapis.com/syzbot-assets/71a5d4620b85/bzImage-075b7484.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+21f8628595b2061c438d@syzkaller.appspotmail.com ------------[ cut here ]------------ con->v1.connect_seq != le32_to_cpu(con->v1.in_reply.connect_seq) WARNING: net/ceph/messenger_v1.c:902 at process_connect net/ceph/messenger_v1.c:901 [inline], CPU#0: kworker/0:2/198 WARNING: net/ceph/messenger_v1.c:902 at ceph_con_v1_try_read+0x3335/0x6eb0 net/ceph/messenger_v1.c:1366, CPU#0: kworker/0:2/198 Modules linked in: CPU: 0 UID: 0 PID: 198 Comm: kworker/0:2 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: ceph-msgr ceph_con_workfn RIP: 0010:process_connect net/ceph/messenger_v1.c:901 [inline] RIP: 0010:ceph_con_v1_try_read+0x3335/0x6eb0 net/ceph/messenger_v1.c:1366 Code: 45 31 e4 e9 3f d1 ff ff e8 68 a6 be f6 90 0f 0b 90 e9 cd d3 ff ff e8 5a a6 be f6 90 0f 0b 90 e9 dd e6 ff ff e8 4c a6 be f6 90 <0f> 0b 90 e9 f4 e7 ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 30 d1 RSP: 0018:ffffc90003c5f180 EFLAGS: 00010293 RAX: ffffffff8b073574 RBX: 0000000000000001 RCX: ffff88802137dd00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90003c5fa78 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000100 R11: 000000000000000d R12: ffff88803e894488 R13: fffff5200078be70 R14: dffffc0000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888125c3e000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb4e8ed7d58 CR3: 0000000045d70000 CR4: 00000000003526f0 Call Trace: ceph_con_workfn+0x208/0x14a0 net/ceph/messenger.c:1577 process_one_work kernel/workqueue.c:3322 [inline] process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup