From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f71.google.com (mail-oo1-f71.google.com [209.85.161.71]) (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 21DA53290DB for ; Fri, 17 Apr 2026 19:31:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.71 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776454264; cv=none; b=Egfr2FfG1piKQSut5vjN9Wh46ReelRuZVzP0cQ0+4nxamaMdjeAjfSN1yT6KfohF5kYKTjsFIJRz5KYh2T47tZ/4qRc8Gho2O+/zsyRBUxYmuIZ/0VtOVEuyu/zGFjEx7nQfUfiff0QqUaWmJChiNTQvzq3vORJvTUoODuuTLWs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776454264; c=relaxed/simple; bh=81VcAbHDvaHgePuqu8AiAiSyywx/V6XS6PgAu2M2kjI=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=Z0AZMj2eh80T9NPAJOykbyX/3CDIBMUzETJq92TQ22dPlB3PWaM//vDwYt7NALbQ367TGCMk8V+BCzVRM0RY/tTtKLW52W+iXTGt0emjj1+YwsC0aQxApSAXOWh5nosDtUymi8+bPaKIOqgtYDbpEsJUH9GETRN8f0xUb7zsX7M= 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=209.85.161.71 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-oo1-f71.google.com with SMTP id 006d021491bc7-68a2fa3375eso2885880eaf.0 for ; Fri, 17 Apr 2026 12:31:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1776454262; x=1777059062; 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=FGetPffzmR8iq7Rxvry9yIrNSwqEFmGDIiXcCvmnsRI=; b=com+V81x9HDS4qI02R2xQxm5P36JjFXxvoqJaOIfgAPmXBvdLUHwnfMZgnj9joaxN2 dlh98sqoAMR/JWYeAJXN4tnz7KuSjHj5PumgHBqv7ANQDzwakVcF50AKgiXUlzQXfSKD r6keWA7mmS/mqWEMIZg7vXQJqCmY7ADB8WdCH9LhvMvLiRA6VC4uzUO3DQ2nR0fFgstF whwndyCbSh4hvdVJOthZ7wZBa4swHo6ni108pFnkutOvhU3jNiBhs22BUlvHdom27wj6 yLplNQ7SRxLL/YtycZZDndR0PQ9kovdn9GwfcPLHHEhVNNp2vZgoJ2s/+7T2mk4KcsKb i8xw== X-Gm-Message-State: AOJu0YwzeEkOPJUJShI42sGvu7B82aIeeqhU/Q3QrvqyvSBCauXZt0oN /QeHP1aJ98OiDhPKVRWIz6Q9JfOMBxEfRlhty8igBzUFvbRmQVQ4HBTkCL6pwl6cavJYRDDdhYU 0pXUtmTYqYJyitssh6GaJwQoz7lDphX8mwZgs1aBZ1sZwbQSmXCnbhHhmAaE= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:2c09:b0:687:7968:76fb with SMTP id 006d021491bc7-694636b04c6mr1503743eaf.9.1776454262083; Fri, 17 Apr 2026 12:31:02 -0700 (PDT) Date: Fri, 17 Apr 2026 12:31:02 -0700 In-Reply-To: <177644286465.3789313.1865189663709823603@talencesecurity.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69e28a76.a00a0220.1bd0ca.0021.GAE@google.com> Subject: Re: [syzbot] [hfs?] KMSAN: uninit-value in hfsplus_bnode_find From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, tristmd@gmail.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 irqentry_exit_to_kernel_mode_preempt ===================================================== BUG: KMSAN: uninit-value in irqentry_exit_to_kernel_mode_preempt+0xb0/0xc0 include/linux/irq-entry-common.h:472 irqentry_exit_to_kernel_mode_preempt+0xb0/0xc0 include/linux/irq-entry-common.h:472 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:547 [inline] irqentry_exit+0x7b/0x760 kernel/entry/common.c:164 sysvec_apic_timer_interrupt+0x52/0x90 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:697 __sanitizer_cov_trace_pc+0x0/0x70 nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:842 [inline] nsim_dev_trap_report drivers/net/netdevsim/dev.c:876 [inline] nsim_dev_trap_report_work+0x8c0/0x1430 drivers/net/netdevsim/dev.c:922 process_one_work kernel/workqueue.c:3302 [inline] process_scheduled_works+0xb65/0x1e40 kernel/workqueue.c:3385 worker_thread+0xee4/0x1590 kernel/workqueue.c:3466 kthread+0x53f/0x600 kernel/kthread.c:436 ret_from_fork+0x20f/0x8d0 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Uninit was created at: slab_post_alloc_hook mm/slub.c:4576 [inline] slab_alloc_node mm/slub.c:4898 [inline] __do_kmalloc_node mm/slub.c:5294 [inline] __kmalloc_node_track_caller_noprof+0x4f6/0x1750 mm/slub.c:5403 kmalloc_reserve net/core/skbuff.c:635 [inline] __alloc_skb+0x90d/0x1190 net/core/skbuff.c:713 alloc_skb include/linux/skbuff.h:1383 [inline] nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:819 [inline] nsim_dev_trap_report drivers/net/netdevsim/dev.c:876 [inline] nsim_dev_trap_report_work+0x3f2/0x1430 drivers/net/netdevsim/dev.c:922 process_one_work kernel/workqueue.c:3302 [inline] process_scheduled_works+0xb65/0x1e40 kernel/workqueue.c:3385 worker_thread+0xee4/0x1590 kernel/workqueue.c:3466 kthread+0x53f/0x600 kernel/kthread.c:436 ret_from_fork+0x20f/0x8d0 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 CPU: 0 UID: 0 PID: 52 Comm: kworker/u8:3 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Workqueue: events_unbound nsim_dev_trap_report_work ===================================================== Tested on: commit: 59bd5ae0 Merge tag 'for-v7.1' of git://git.kernel.org/.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master console output: https://syzkaller.appspot.com/x/log.txt?x=15ba6f16580000 kernel config: https://syzkaller.appspot.com/x/.config?x=dd34a4e3f8a96df8 dashboard link: https://syzkaller.appspot.com/bug?extid=217eb327242d08197efb 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=10e24702580000