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 AFD7F225403 for ; Fri, 23 Jan 2026 01:14:08 +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=1769130854; cv=none; b=Ja+WcUWDMAoRlfnMzy/iV3jxNTPwZUfyIhGcdC3pqYgcJAGx23j40scIF8msiS7zxgpfEeIJmJ3v18OO+5c1unP5DwQ5dlXaXcAFo5l8UhshxTP6dgnWi+c+Ji/YLdBKf1PcuGhsBK83lMkdx9ryLPDxLh5zZbkyaUp0Sbk/Ht0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769130854; c=relaxed/simple; bh=UYLJsELmtE9VFXIhFSC2RDJgpU1rle+ZS2KUj4Y/Zbw=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=Vmz2S8V8lpaqsLD+BQhq2LSmTxb/VONTitUHiIqjj8o47LBkZvVTRh7tsBEHc+m3/tI30xmDbNoMF6q9FY+6J2EzfMQ0Dl1VqhiC9sFahbMlitGQPjBgdSuJHU5Y4Vs/KJgWxPUP7iRm1BS7BFenzApYtxIMlla8bkio3LjQUd4= 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 5614622812f47-45c9878359dso2278768b6e.2 for ; Thu, 22 Jan 2026 17:14:07 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769130845; x=1769735645; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=BmC4h4zbG6zyHVghGUprZDed2kvi5+1/fF/nULNCbCo=; b=ISQXJbQxgMjQBeZgTEmQSINHkhva4fNZhR8KdjpDh58Fm9yhjDJd9uNVFqjdApbyDO CahkYYTR4WDMirVcZ1PPesvTSY9Z1F7RKb+jZWqIOmmNZtz9PIpoyjX38cWkl7X0lu03 co1IS/SP8kfu5INYVi9CF48K45iceT6rpStfq/pNBtW365NsexcynuUzEbNTKPskfHL0 wTaACquYYfw1GiFWtfFMHK7AUM8TdOlUYi9gyb/qD4jZbY+jv2J3jfw/Pji7xfqQmHDJ xR18TlG8M26nqSlyrGORd8/XdtJYLiptb0mfBPgbA6TQrCufb8f9yIzsUXeXxSsy9e7H H3qQ== X-Forwarded-Encrypted: i=1; AJvYcCVvvBOkk4L2oVYIYoexh/rIw1U3wSKMu9Ob6/HjPOxt4exXN2gMjemQvKTDLWo1HoW4XC8M8zTjC74+M50=@vger.kernel.org X-Gm-Message-State: AOJu0YxebqPUT+yRoAylaC/txoVBQEs/UQJ2qaXW/jnRDecj+GDjCUuU Xm2bRPzzrWsbjw8NgLAdjiV41X4yXWT6LNFSxlefJ4NMsMIxAKmPmK4RYJ+G/lQWreePSe7U7lU +4mzui2RUVkZs7l9DWugQeS/uzNHKKS7SU+eKo1IfoJckiJXZw8x9wXx+j5Q= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a4a:e84c:0:b0:65f:66c5:c62 with SMTP id 006d021491bc7-662cabb8691mr790501eaf.73.1769130845199; Thu, 22 Jan 2026 17:14:05 -0800 (PST) Date: Thu, 22 Jan 2026 17:14:05 -0800 In-Reply-To: <20260122233406.1840255-1-kartikey406@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6972cb5d.a70a0220.35de72.0002.GAE@google.com> Subject: Re: [syzbot] [hfs?] KMSAN: uninit-value in hfsplus_strcasecmp (2) From: syzbot To: kartikey406@gmail.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: KMSAN: uninit-value in hfsplus_strcasecmp HFSPLUS_BREC_READ: rec_len=520, fd->entrylength=26 HFSPLUS_BREC_READ: WARNING - entrylength (26) < rec_len (520) - PARTIAL READ! HFSPLUS_BREC_READ: Successfully read 26 bytes (expected 520) ===================================================== BUG: KMSAN: uninit-value in case_fold fs/hfsplus/unicode.c:26 [inline] BUG: KMSAN: uninit-value in hfsplus_strcasecmp+0x62a/0x970 fs/hfsplus/unicode.c:67 case_fold fs/hfsplus/unicode.c:26 [inline] hfsplus_strcasecmp+0x62a/0x970 fs/hfsplus/unicode.c:67 hfsplus_cat_case_cmp_key+0xb9/0x190 fs/hfsplus/catalog.c:26 hfs_find_rec_by_key+0xae/0x250 fs/hfsplus/bfind.c:89 __hfsplus_brec_find+0x274/0x850 fs/hfsplus/bfind.c:124 hfsplus_brec_find+0x4ec/0xa10 fs/hfsplus/bfind.c:190 hfsplus_find_cat+0x3b0/0x4f0 fs/hfsplus/catalog.c:220 hfsplus_iget+0x815/0xc30 fs/hfsplus/super.c:96 hfsplus_fill_super+0x1550/0x2580 fs/hfsplus/super.c:548 get_tree_bdev_flags+0x6e6/0x920 fs/super.c:1691 get_tree_bdev+0x38/0x50 fs/super.c:1714 hfsplus_get_tree+0x35/0x40 fs/hfsplus/super.c:680 vfs_get_tree+0xb3/0x5c0 fs/super.c:1751 fc_mount fs/namespace.c:1199 [inline] do_new_mount_fc fs/namespace.c:3636 [inline] do_new_mount+0x879/0x1700 fs/namespace.c:3712 path_mount+0x777/0x1fe0 fs/namespace.c:4022 do_mount fs/namespace.c:4035 [inline] __do_sys_mount fs/namespace.c:4224 [inline] __se_sys_mount+0x6f7/0x7e0 fs/namespace.c:4201 __x64_sys_mount+0xe4/0x150 fs/namespace.c:4201 x64_sys_call+0x38cb/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:166 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: hfsplus_cat_build_key_uni fs/hfsplus/catalog.c:77 [inline] hfsplus_find_cat+0x356/0x4f0 fs/hfsplus/catalog.c:217 hfsplus_iget+0x815/0xc30 fs/hfsplus/super.c:96 hfsplus_fill_super+0x1550/0x2580 fs/hfsplus/super.c:548 get_tree_bdev_flags+0x6e6/0x920 fs/super.c:1691 get_tree_bdev+0x38/0x50 fs/super.c:1714 hfsplus_get_tree+0x35/0x40 fs/hfsplus/super.c:680 vfs_get_tree+0xb3/0x5c0 fs/super.c:1751 fc_mount fs/namespace.c:1199 [inline] do_new_mount_fc fs/namespace.c:3636 [inline] do_new_mount+0x879/0x1700 fs/namespace.c:3712 path_mount+0x777/0x1fe0 fs/namespace.c:4022 do_mount fs/namespace.c:4035 [inline] __do_sys_mount fs/namespace.c:4224 [inline] __se_sys_mount+0x6f7/0x7e0 fs/namespace.c:4201 __x64_sys_mount+0xe4/0x150 fs/namespace.c:4201 x64_sys_call+0x38cb/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:166 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Local variable tmp created at: hfsplus_find_cat+0x43/0x4f0 fs/hfsplus/catalog.c:197 hfsplus_iget+0x815/0xc30 fs/hfsplus/super.c:96 CPU: 1 UID: 0 PID: 6576 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(none) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026 ===================================================== Tested on: commit: a66191c5 Merge tag 'hyperv-fixes-signed-20260121' of g.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12e48452580000 kernel config: https://syzkaller.appspot.com/x/.config?x=62c21fde37118981 dashboard link: https://syzkaller.appspot.com/bug?extid=d80abb5b890d39261e72 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 patch: https://syzkaller.appspot.com/x/patch.diff?x=14150bfa580000