From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f199.google.com (mail-oi1-f199.google.com [209.85.167.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C0B563242B3 for ; Sat, 28 Feb 2026 04:38:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772253513; cv=none; b=oPBiOMOoMIpnHgmVrZ5tC88oMscv36CNeKO5A7a0ZYiZk5Mj5btUYGvX1lyZziH6J2Cd2UmUpH93GxAINOZs7fG7WgPP9g2uAYOVgMxGN0VRIhDHoti6nF9ngfWCBL1Si6YwU2uHU6d1mcedJAFmTOWIt+TRAGVWc7BJuWgw6jA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772253513; c=relaxed/simple; bh=/m/tAhYo/fjiHpCpRNcH5fsShh6TZUCc08RG5Cf1lEU=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=AvxTj+m4soCzj1NOVPJd8gotT6Q5PhapS2sBUJxY1WCbKD2Kvh+TPKbL3AFYhxDNahnd2kys5wR5ZXcCz2X6SnutflWbBUzorCMKm/ZdFjUl2scOcUttVodFzV1Na0FWF6uVRpQo1aQmDH9Be8svrHcy0hwZUxOwGMZwkSeqQ40= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.167.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-oi1-f199.google.com with SMTP id 5614622812f47-463905cb295so15616256b6e.2 for ; Fri, 27 Feb 2026 20:38:31 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1772253511; x=1772858311; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=C5gzgnU3iEE7jBYFDoRuF/jg2nazHJBRv9S4PJXT0g4=; b=JEUzyy1YZKpWWTebouS1R97T7okWBxO79x5RIUZ04w7ug8XptSVUeNzaPKQInTMzNr /rnSti8uZ/DZxv7HlPwqLC2ujiSdpDYCdclPUoslPNPJD9Ubp/vQ+NYW1riiik+U6DAV ctpwdRaT/brEhPNm5PBb1+HpAh2j7uTLYfgTdWHoigczK+L2dQH5e9Ja/ndHZqMa4gr0 OudjvJmGFz09fQp7Lht+53bgafShNx0FaPTJkd8FKM3vLKiV1BoLQEMrGjsfRKlQHQKD mOj7iaewJrlE1E6Fcw0Xfcl7M69pghLYKayu3p8me+7rtBwrlnTPFinYJvA6ak+/ta+Q RCLA== X-Forwarded-Encrypted: i=1; AJvYcCXgVOgC+peA92kP7jIgl2W2aHhzI7XdcXJ38A6zLpsHz2TB8tvc9OYfDzWYZtaBR3QMxDBXDjzIE+qz@vger.kernel.org X-Gm-Message-State: AOJu0Yws/DqXjymN3l5Ts3iilSJuzGDn5UiFiYItM8k+yDdrBjXns6nu hf6O753RZ1WQbH3OWnRcxmD63NzfPjDuy5efdr0JnMcbFpIoDUNyDV0S8zj2ETHnyFfuZ4AWYnv H4SuKNcPdxYHpSQ7Vl3u8Dvs1C6qmftllywi8/oD7ruuJX0srsbb6fq7sHwo= Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:98e:b0:66d:b183:64ed with SMTP id 006d021491bc7-679fadf3944mr3241818eaf.25.1772253510747; Fri, 27 Feb 2026 20:38:30 -0800 (PST) Date: Fri, 27 Feb 2026 20:38:30 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69a27146.050a0220.3a55be.002e.GAE@google.com> Subject: [syzbot] [rdma?] kernel BUG in ib_device_get_by_index From: syzbot To: jgg@ziepe.ca, leon@kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 779cae956c83 Add linux-next specific files for 20260223 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=172ebfb2580000 kernel config: https://syzkaller.appspot.com/x/.config?x=ee920513e4deca5f dashboard link: https://syzkaller.appspot.com/bug?extid=53cf317e7803e4ef2f33 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/0110c968351a/disk-779cae95.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/582a1d69266e/vmlinux-779cae95.xz kernel image: https://storage.googleapis.com/syzbot-assets/13619a146558/bzImage-779cae95.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+53cf317e7803e4ef2f33@syzkaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at ./include/rdma/ib_verbs.h:4611! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 5945 Comm: syz.0.12 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:ib_device_try_get include/rdma/ib_verbs.h:4611 [inline] RIP: 0010:ib_device_get_by_index+0x2ae/0x2b0 drivers/infiniband/core/device.c:331 Code: f9 e9 76 fe ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 9d fe ff ff 4c 89 f7 e8 6d 6c 88 f9 e9 90 fe ff ff e8 23 46 1e f9 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa RSP: 0018:ffffc900043e6fe0 EFLAGS: 00010287 RAX: ffffffff88a79c3d RBX: ffff8880277bc000 RCX: 0000000000080000 RDX: ffffc9000d882000 RSI: 0000000000000110 RDI: 0000000000000111 RBP: ffffc900043e7090 R08: ffff88801e7ebc80 R09: 0000000000000002 R10: 0000000000000406 R11: 0000000000000002 R12: 1ffff9200087ce00 R13: dffffc0000000000 R14: ffff8880277bd104 R15: dffffc0000000000 FS: 00007f2f67eba6c0(0000) GS:ffff888125009000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001000 CR3: 0000000076cc8000 CR4: 00000000003526f0 Call Trace: nldev_set_doit+0x23a/0x4c0 drivers/infiniband/core/nldev.c:1134 rdma_nl_rcv_msg drivers/infiniband/core/netlink.c:-1 [inline] rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline] rdma_nl_rcv+0x6d7/0xa10 drivers/infiniband/core/netlink.c:259 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec+0x18f/0x1d0 net/socket.c:737 __sock_sendmsg net/socket.c:752 [inline] ____sys_sendmsg+0x589/0x8c0 net/socket.c:2610 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2664 __sys_sendmsg net/socket.c:2696 [inline] __do_sys_sendmsg net/socket.c:2701 [inline] __se_sys_sendmsg net/socket.c:2699 [inline] __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2699 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2f66f9c629 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2f67eba028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f2f67216090 RCX: 00007f2f66f9c629 RDX: 0000000000040810 RSI: 0000200000000140 RDI: 0000000000000004 RBP: 00007f2f67032b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f2f67216128 R14: 00007f2f67216090 R15: 00007fff55890bd8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ib_device_try_get include/rdma/ib_verbs.h:4611 [inline] RIP: 0010:ib_device_get_by_index+0x2ae/0x2b0 drivers/infiniband/core/device.c:331 Code: f9 e9 76 fe ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 9d fe ff ff 4c 89 f7 e8 6d 6c 88 f9 e9 90 fe ff ff e8 23 46 1e f9 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa RSP: 0018:ffffc900043e6fe0 EFLAGS: 00010287 RAX: ffffffff88a79c3d RBX: ffff8880277bc000 RCX: 0000000000080000 RDX: ffffc9000d882000 RSI: 0000000000000110 RDI: 0000000000000111 RBP: ffffc900043e7090 R08: ffff88801e7ebc80 R09: 0000000000000002 R10: 0000000000000406 R11: 0000000000000002 R12: 1ffff9200087ce00 R13: dffffc0000000000 R14: ffff8880277bd104 R15: dffffc0000000000 FS: 00007f2f67eba6c0(0000) GS:ffff888125109000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f37a17e82f8 CR3: 0000000076cc8000 CR4: 00000000003526f0 --- 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 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