From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f72.google.com (mail-ot1-f72.google.com [209.85.210.72]) (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 1A2E830DEB5 for ; Fri, 23 Jan 2026 08:34:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769157245; cv=none; b=efQSMCIohNHcc1DPSYVrSPEJQHLM5AptF2ADnSTHqFN6VDr0NBwJV6o9KWQTjVr5TOWSZdRo/pvZlAdairgEEZayDdRaIHswwv5KCpxfRhUYzxH/ndqfLX7unv3DHG3/aKRwEDVlZ8o21IpKWU0DTc682eyPCPzl8L/L3s7ed0o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769157245; c=relaxed/simple; bh=veNainu6jW3uozuDMlxYMzt4VXI3EAggpFcO637opNg=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=mx8KewotDLP5cFlDZY4J18qRpo1eiXAr20RX/Bnhp6iQHhVN8WLQMLRpwa0UCB84SZGDHb/pMtr5sOK2Lo7i9jZtD4m1PUvzgQyxdoPZyy8PTc9T9GqL1TYH29ZnlT+gyjxeOLJqLJ56NKWDFoC7xhrmqO5irpUrlBzb1VlND78= 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=209.85.210.72 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-ot1-f72.google.com with SMTP id 46e09a7af769-7cfd3f150ebso6229634a34.3 for ; Fri, 23 Jan 2026 00:34:03 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769157243; x=1769762043; 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=LsUyGW4/dxBnaVwZa5CC2/1oEyd2IImARrYSlVTJGGs=; b=bpXZ15k7pCtAu5f1qCzDZGOc1sqCr37268cceku294BDALSjmvp2I4qLc7wsCISpDt 95kw8nIo5mDGqAgZgTay7zrIU0n0fZOgVa/lYcNXQzCh2DnoOaBOEcNoce2LhsDkF0J1 XgOFXehBxkwuAPEHrJjpjDGgXOaQ7j04gfeEpaDMaJTSEndYPk44fWpLCHTdrXKXbixE nnfTb3w1J4MGf6fqJbvQjHWtEpqUh0PDOar2SWv8ESToSMGWgY+y9OH6DVI1RCyEeaDK F12tzEd8qp2GqWl3L1SitM20n63ak+seZrcp15qQB1iiGi3/pzB+uvP047YMQGWqJ+p6 gJSA== X-Forwarded-Encrypted: i=1; AJvYcCWWATyRir6NBbPhDykvuPQfdkjMBFi5j2PFCRbmlmA9BxdRwHS/W/wTCj04KiAXdHeistV1rSGKJrQjeHc=@vger.kernel.org X-Gm-Message-State: AOJu0YwbmfUwmxEPlWDMCHSB+K08HquyxnbSqnkF+MABTpneBGw396vr fbcuyI57i4pc8TWZSqqBY0cmWN61Wn25OKW576SAllFdh099WDRL51lZCsLlrsJf0pg0O8VFu0i 62SSZgK1WfZBdXonXiwyxPzxAf7BZyKrJYg3AW7/oiLFir/mWwhJy/yIetZQ= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:4b0d:b0:661:e3c4:8221 with SMTP id 006d021491bc7-662cab51c44mr993490eaf.40.1769157242968; Fri, 23 Jan 2026 00:34:02 -0800 (PST) Date: Fri, 23 Jan 2026 00:34:02 -0800 In-Reply-To: <20260123053348.1844888-1-kartikey406@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6973327a.a70a0220.35de72.0007.GAE@google.com> Subject: Re: [syzbot] [jfs?] KMSAN: uninit-value in txLock 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: kernel BUG in txLock BUG at fs/jfs/jfs_txnmgr.c:662 assert(last) ------------[ cut here ]------------ kernel BUG at fs/jfs/jfs_txnmgr.c:662! Oops: invalid opcode: 0000 [#1] SMP PTI CPU: 0 UID: 0 PID: 6674 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(none) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026 RIP: 0010:txLock+0x144c/0x2900 fs/jfs/jfs_txnmgr.c:662 Code: c7 80 20 03 00 00 00 00 00 00 48 c7 c7 d5 c9 d1 91 48 c7 c6 76 86 aa 91 ba 96 02 00 00 48 c7 c1 b6 ff be 91 e8 d5 ae c7 fc 90 <0f> 0b 48 83 7d b8 00 0f 85 df 0f 00 00 4c 8b 6d 90 41 0f b7 5d 00 RSP: 0018:ffff888046c5b458 EFLAGS: 00010286 RAX: 000000000000002b RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: ffff888046c5b548 R08: ffffea000000000f R09: 0000000000000000 R10: ffff888237b1f028 R11: ffff88823f26ad60 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007fb5748466c0(0000) GS:ffff8881aacec000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000022000 CR3: 0000000049288000 CR4: 00000000003526f0 Call Trace: xtTruncate+0xffd/0x5210 fs/jfs/jfs_xtree.c:2337 jfs_truncate_nolock+0x223/0x670 fs/jfs/inode.c:396 jfs_truncate fs/jfs/inode.c:420 [inline] jfs_write_failed+0x207/0x3c0 fs/jfs/inode.c:295 jfs_write_end+0xcc/0x110 fs/jfs/inode.c:322 generic_perform_write+0x99f/0x1050 mm/filemap.c:4335 __generic_file_write_iter+0x213/0x460 mm/filemap.c:4431 generic_file_write_iter+0x131/0x980 mm/filemap.c:4457 new_sync_write fs/read_write.c:593 [inline] vfs_write+0xbe1/0x15c0 fs/read_write.c:686 ksys_pwrite64 fs/read_write.c:793 [inline] __do_sys_pwrite64 fs/read_write.c:801 [inline] __se_sys_pwrite64 fs/read_write.c:798 [inline] __x64_sys_pwrite64+0x2ab/0x3b0 fs/read_write.c:798 x64_sys_call+0xbaf/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:19 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 RIP: 0033:0x7fb57399aef9 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:00007fb574846028 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 00007fb573c05fa0 RCX: 00007fb57399aef9 RDX: 00000000200000c1 RSI: 00002000000000c0 RDI: 0000000000000004 RBP: 00007fb573a2fee0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000009000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb573c06038 R14: 00007fb573c05fa0 R15: 00007ffc81835368 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:txLock+0x144c/0x2900 fs/jfs/jfs_txnmgr.c:662 Code: c7 80 20 03 00 00 00 00 00 00 48 c7 c7 d5 c9 d1 91 48 c7 c6 76 86 aa 91 ba 96 02 00 00 48 c7 c1 b6 ff be 91 e8 d5 ae c7 fc 90 <0f> 0b 48 83 7d b8 00 0f 85 df 0f 00 00 4c 8b 6d 90 41 0f b7 5d 00 RSP: 0018:ffff888046c5b458 EFLAGS: 00010286 RAX: 000000000000002b RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: ffff888046c5b548 R08: ffffea000000000f R09: 0000000000000000 R10: ffff888237b1f028 R11: ffff88823f26ad60 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007fb5748466c0(0000) GS:ffff8881aacec000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000022000 CR3: 0000000049288000 CR4: 00000000003526f0 Tested on: commit: c072629f Merge tag 'v6.19-p4' of git://git.kernel.org/.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15128bfa580000 kernel config: https://syzkaller.appspot.com/x/.config?x=62c21fde37118981 dashboard link: https://syzkaller.appspot.com/bug?extid=d3a57c32b9112d7b01ec 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=17cf97fc580000