From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9140EC433F5 for ; Wed, 5 Jan 2022 12:03:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239886AbiAEMDU (ORCPT ); Wed, 5 Jan 2022 07:03:20 -0500 Received: from mail-io1-f71.google.com ([209.85.166.71]:50103 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239885AbiAEMDU (ORCPT ); Wed, 5 Jan 2022 07:03:20 -0500 Received: by mail-io1-f71.google.com with SMTP id g16-20020a05660203d000b005f7b3b0642eso21907102iov.16 for ; Wed, 05 Jan 2022 04:03:20 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=B2ue6rdjnDkmtAxgVcmjk6LtSUfDXVXxXmhyUfE9ElI=; b=pFxa7ABhZXxw7Cxv04TOFwyrByv2iYGk3EiRliAcrfxQLxA1/bUdI/AkT+aNAwjS3X U8dhoF1bYeDfzxI6B5Gem9Z8YgIL5avXmrgW1Pl+5q3aljH2Zyx7kXwbFk9HIIqt4Ma3 mdxtnnDmE5fDPc53TW3UVZtsR/rk9edGcND5dq0NPkQquS/AD0CO77F7sj9LWBb+tcOV KTaPOPOiiEi1G6bCwBg3grgntp9dvvt7m/57GKVEfqevhhd4gbJayidRZWYpCK/YF/hr G5xax6IuKJWLIgspVegvrxXxKl3ROjc9rN9RlDHCGS1DyIQq4kAMlN6pXwO0YCcKvi6j q1Kw== X-Gm-Message-State: AOAM531V31EIgnugtJ048zpDUs+nWWXMuNruOHhmYWxSnRfSSsFBG/RH Hea9HxH+/8h2PSDfQLZyFYd366GiWBgmsCSMykZNHXhfRd6d X-Google-Smtp-Source: ABdhPJxOfzDp5Usc2hvhmpqMhVJOOCW51JfVCPHBLIi7ZfcGaUG05Tssg94wOvZ92zfJifTHXYHG+OFAecAS8q1EBAS0JI+GjFVu MIME-Version: 1.0 X-Received: by 2002:a92:ddc4:: with SMTP id d4mr561543ilr.281.1641384199974; Wed, 05 Jan 2022 04:03:19 -0800 (PST) Date: Wed, 05 Jan 2022 04:03:19 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000002df33305d4d48a3c@google.com> Subject: [syzbot] KMSAN: uninit-value in cma_make_mc_event From: syzbot To: avihaih@nvidia.com, dledford@redhat.com, glider@google.com, haakon.bugge@oracle.com, 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" Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 8b936c96768e kmsan: core: remove the accidentally committe.. git tree: https://github.com/google/kmsan.git master console output: https://syzkaller.appspot.com/x/log.txt?x=13420bb9b00000 kernel config: https://syzkaller.appspot.com/x/.config?x=e00a8959fdd3f3e8 dashboard link: https://syzkaller.appspot.com/bug?extid=8fcbb77276d43cc8b693 compiler: clang version 14.0.0 (git@github.com:llvm/llvm-project.git 0996585c8e3b3d409494eb5f1cad714b9e1f7fb5), GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+8fcbb77276d43cc8b693@syzkaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in cma_set_qkey drivers/infiniband/core/cma.c:510 [inline] BUG: KMSAN: uninit-value in cma_make_mc_event+0xb73/0xe00 drivers/infiniband/core/cma.c:4570 cma_set_qkey drivers/infiniband/core/cma.c:510 [inline] cma_make_mc_event+0xb73/0xe00 drivers/infiniband/core/cma.c:4570 cma_iboe_join_multicast drivers/infiniband/core/cma.c:4782 [inline] rdma_join_multicast+0x2b83/0x30a0 drivers/infiniband/core/cma.c:4814 ucma_process_join+0xa76/0xf60 drivers/infiniband/core/ucma.c:1479 ucma_join_multicast+0x1e3/0x250 drivers/infiniband/core/ucma.c:1546 ucma_write+0x639/0x6d0 drivers/infiniband/core/ucma.c:1732 vfs_write+0x8ce/0x2030 fs/read_write.c:588 ksys_write+0x28c/0x520 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __ia32_sys_write+0xdb/0x120 fs/read_write.c:652 do_syscall_32_irqs_on arch/x86/entry/common.c:114 [inline] __do_fast_syscall_32+0x96/0xf0 arch/x86/entry/common.c:180 do_fast_syscall_32+0x34/0x70 arch/x86/entry/common.c:205 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:248 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Local variable ib.i created at: cma_iboe_join_multicast drivers/infiniband/core/cma.c:4737 [inline] rdma_join_multicast+0x586/0x30a0 drivers/infiniband/core/cma.c:4814 ucma_process_join+0xa76/0xf60 drivers/infiniband/core/ucma.c:1479 CPU: 0 PID: 29874 Comm: syz-executor.3 Not tainted 5.16.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ===================================================== --- 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.