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Thu, 24 Sep 2020 22:18:21 -0700 (PDT) Date: Thu, 24 Sep 2020 22:18:21 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f9f80905b01c7185@google.com> From: syzbot To: chao@kernel.org, glider@google.com, jaegeuk@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com X-Headers-End: 1kLg7n-007IXN-5V Subject: [f2fs-dev] KMSAN: uninit-value in f2fs_lookup X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net Hello, syzbot found the following issue on: HEAD commit: c5a13b33 kmsan: clang-format core git tree: https://github.com/google/kmsan.git master console output: https://syzkaller.appspot.com/x/log.txt?x=14f5b19b900000 kernel config: https://syzkaller.appspot.com/x/.config?x=20f149ad694ba4be dashboard link: https://syzkaller.appspot.com/bug?extid=0eac6f0bbd558fd866d7 compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81) 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+0eac6f0bbd558fd866d7@syzkaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in f2fs_lookup+0xe05/0x1a80 fs/f2fs/namei.c:503 CPU: 0 PID: 20216 Comm: syz-executor.5 Not tainted 5.9.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:118 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:122 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:219 f2fs_lookup+0xe05/0x1a80 fs/f2fs/namei.c:503 lookup_open fs/namei.c:3082 [inline] open_last_lookups fs/namei.c:3177 [inline] path_openat+0x2729/0x6a90 fs/namei.c:3365 do_filp_open+0x2b8/0x710 fs/namei.c:3395 do_sys_openat2+0xa88/0x1140 fs/open.c:1168 do_sys_open fs/open.c:1184 [inline] __do_compat_sys_openat fs/open.c:1242 [inline] __se_compat_sys_openat+0x2a4/0x310 fs/open.c:1240 __ia32_compat_sys_openat+0x56/0x70 fs/open.c:1240 do_syscall_32_irqs_on arch/x86/entry/common.c:80 [inline] __do_fast_syscall_32+0x129/0x180 arch/x86/entry/common.c:139 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:162 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:205 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f73549 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f554c0cc EFLAGS: 00000296 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 0000000020000980 RDX: 000000000002f042 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Local variable ----page@f2fs_lookup created at: f2fs_lookup+0x8f/0x1a80 fs/f2fs/namei.c:477 f2fs_lookup+0x8f/0x1a80 fs/f2fs/namei.c:477 ===================================================== --- 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. _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel 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 X-Spam-Level: X-Spam-Status: No, score=-8.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 26D77C4363D for ; Fri, 25 Sep 2020 05:18:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D9AF82176B for ; Fri, 25 Sep 2020 05:18:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727135AbgIYFSW (ORCPT ); Fri, 25 Sep 2020 01:18:22 -0400 Received: from mail-io1-f78.google.com ([209.85.166.78]:49856 "EHLO mail-io1-f78.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727044AbgIYFSW (ORCPT ); Fri, 25 Sep 2020 01:18:22 -0400 Received: by mail-io1-f78.google.com with SMTP id k133so1075326iof.16 for ; Thu, 24 Sep 2020 22:18:21 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=xnaQi0Ogw6Ir+bQkz0MTlcxfGbyjAbFPvVDgd22X8g4=; b=ALVzSaj+FaOIkLUFXeW917xNM6k2dVLqLLrAkaFccRBi1QECSLCwfQyjifKmCX6Fzl Frku5K5riK9wMg9PAaI0GsxKDZjC8lbhgQEt8OvduYE1tLvrDcRkyYL6MF2Ho3kr+ZgY zmwmPhctTJvRUFA0M50mEsdK7Ym+P30qwtt9iPUAdCQSpSghNJo1BxNwubcTCND34JPs LMnYR8k7A43IlxcUhJ0PbZq9RWdltg4deUcZiw6o3T7shjglKUBF2YOAxAh7FWBE/kBE r4vwwqDXztRbNqP0IRMEB6OceXpXHlRy2N1UebC9cnYxYzUZV0euYIZBe89siklY/fCP 5+KQ== X-Gm-Message-State: AOAM532zy2RBCNLrUS00W+qYlAH57RflB8RprFGtqO6hTN8X/kyHiCsi eQ5694e5bpD1gWDpJXPuCdVaudHz4tFInIj9KGXhQ4ihIxA1 X-Google-Smtp-Source: ABdhPJwFHnIAiyZebX2UEaNXh4EpklxkDUzVeGdciChcFKVao+vl1qvk1nfhQAvDSpVwdjyDosA8TNS/pClz6ns/4jJiDzlfljAN MIME-Version: 1.0 X-Received: by 2002:a02:8802:: with SMTP id r2mr1962416jai.75.1601011101332; Thu, 24 Sep 2020 22:18:21 -0700 (PDT) Date: Thu, 24 Sep 2020 22:18:21 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f9f80905b01c7185@google.com> Subject: KMSAN: uninit-value in f2fs_lookup From: syzbot To: chao@kernel.org, glider@google.com, jaegeuk@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: c5a13b33 kmsan: clang-format core git tree: https://github.com/google/kmsan.git master console output: https://syzkaller.appspot.com/x/log.txt?x=14f5b19b900000 kernel config: https://syzkaller.appspot.com/x/.config?x=20f149ad694ba4be dashboard link: https://syzkaller.appspot.com/bug?extid=0eac6f0bbd558fd866d7 compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81) 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+0eac6f0bbd558fd866d7@syzkaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in f2fs_lookup+0xe05/0x1a80 fs/f2fs/namei.c:503 CPU: 0 PID: 20216 Comm: syz-executor.5 Not tainted 5.9.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:118 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:122 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:219 f2fs_lookup+0xe05/0x1a80 fs/f2fs/namei.c:503 lookup_open fs/namei.c:3082 [inline] open_last_lookups fs/namei.c:3177 [inline] path_openat+0x2729/0x6a90 fs/namei.c:3365 do_filp_open+0x2b8/0x710 fs/namei.c:3395 do_sys_openat2+0xa88/0x1140 fs/open.c:1168 do_sys_open fs/open.c:1184 [inline] __do_compat_sys_openat fs/open.c:1242 [inline] __se_compat_sys_openat+0x2a4/0x310 fs/open.c:1240 __ia32_compat_sys_openat+0x56/0x70 fs/open.c:1240 do_syscall_32_irqs_on arch/x86/entry/common.c:80 [inline] __do_fast_syscall_32+0x129/0x180 arch/x86/entry/common.c:139 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:162 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:205 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f73549 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f554c0cc EFLAGS: 00000296 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 0000000020000980 RDX: 000000000002f042 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Local variable ----page@f2fs_lookup created at: f2fs_lookup+0x8f/0x1a80 fs/f2fs/namei.c:477 f2fs_lookup+0x8f/0x1a80 fs/f2fs/namei.c:477 ===================================================== --- 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.