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 8DAEE31E851 for ; Mon, 4 May 2026 20:51:03 +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=1777927869; cv=none; b=ZyhXNNoxWidl5FvsrpjQ4yWMXPiayb+aU/Ji216puNB8fTWPm9E+RhuYeFnEVSTxXdgcqrDvWQoLWaWbeUWr9UgQ1Per0qsq4IDVskIiCplLaq46HUDJLMC27gGFrZ+7IavMVmj6vQhQmYqByA5e6M5xZmaMfEvZ+8MeKXGJzrU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777927869; c=relaxed/simple; bh=bxWWR4VPDW5qg1KudL2JQqP2ZeWsXcqywzLzmbWXB3o=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=UvgOcVUVq7aQAkL5Yg3rCCQks4V7FxEKddamnAigLqDVFkhFus1Cv+/3usQEd+zkYsYQlQnb+BJBQNyML1Y11fNjfL7J3X2R9JuwSvWpP3vWwbp65V/OS7sqEk5tnFoYZRciajMeK2NJ5YsRLlPnQTAxumKdQK1dOibLoW/+gao= 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 006d021491bc7-6968cf5a116so4436020eaf.0 for ; Mon, 04 May 2026 13:51:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1777927862; x=1778532662; 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=bCjj8G05TtBZLOd7zrH44gm7HPyOQ+hR+PG268x3BGk=; b=AuzFdWkz4on5ApV18AZhGMkRGxbUkvrpRFIEBzZYA6TX1DUsUfGu/CYHF/bm3cUe6p +34DPTZSmsGxJCFC0Rqf0xZ10CLPHIdpT0k0tVHZyvYO4ZbBvX3ovwflQ7mq5PLLaHuM bFkPgytjd/sJumYHQs9BlJEJAVPZNgsukhONumQ8QTtY9mU12j145aF7oVzOD9E8CZEu jLF0xrzCEpBO8OcNOnfuwroc6JcAFALQlKO3tZB0SZ+LQbD5BIa4T3wDkF+cOLS2X5XJ LUsPg0Z5TPEzXpXp+4C2ORk2kIb0L5M6ljDpAn2nh3rrOglhEbaake9WJ/g+3twNQ0Hu ZbBA== X-Forwarded-Encrypted: i=1; AFNElJ+bDDtNmfuq4c/Wnebw5oc9O9eb5gpUJqi50jPP3HZZ/hl8FDL104m0Y3UlYoY+4CuMRo2Ppsq8vD66hBI=@vger.kernel.org X-Gm-Message-State: AOJu0Yw27fdQY8wO1reO8vxqJ2MIYQbBWp4kzz9WU3+VCkKD+TgwsAZL EjQP0Bf2vbAeQ6vDSqby84nBi0VPm+mCzVvMbiHxlQ+aXn0fjqz/xRg9OQb2lrWefu6tG9Va1kX /IGmFgxP6fvEXj/zuq+GkqWxl2cNodBhdjUrsfeufhZrNSFM2PqyLgwrmp0U= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:60f:b0:696:8c3f:d7d8 with SMTP id 006d021491bc7-6998d225e63mr109559eaf.37.1777927861903; Mon, 04 May 2026 13:51:01 -0700 (PDT) Date: Mon, 04 May 2026 13:51:01 -0700 In-Reply-To: <2956b248-c79f-4eae-8bfc-81178b5899af@dev.snart.me> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69f906b5.050a0220.892e9.00d7.GAE@google.com> Subject: Re: [syzbot] [mm?] [exfat?] [f2fs?] memory leak in __kfree_rcu_sheaf From: syzbot To: dxdt@dev.snart.me, linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.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 panic: !!! sbi at ADDR used after freeing !!! F2FS-fs (loop1): f2fs_record_error_work() Kernel panic - not syncing: !!! sbi at ffff888129322000 used after freeing !!! CPU: 1 UID: 0 PID: 6598 Comm: kworker/1:5 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 Workqueue: events f2fs_record_error_work Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x97/0xe0 lib/dump_stack.c:120 vpanic+0x383/0x6d0 kernel/panic.c:650 panic+0x6e/0x70 kernel/panic.c:787 f2fs_record_error_work.cold+0x14/0x14 fs/f2fs/super.c:4747 process_one_work+0x277/0x5b0 kernel/workqueue.c:3302 process_scheduled_works kernel/workqueue.c:3385 [inline] worker_thread+0x255/0x4a0 kernel/workqueue.c:3466 kthread+0x14e/0x1a0 kernel/kthread.c:436 ret_from_fork+0x219/0x490 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Kernel Offset: disabled Tested on: commit: 6d35786d Merge tag 'for-linus' of git://git.kernel.org.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17a63a36580000 kernel config: https://syzkaller.appspot.com/x/.config?x=9645c21cfd1d3e8f dashboard link: https://syzkaller.appspot.com/bug?extid=cae7809e9dc1459e4e63 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 patch: https://syzkaller.appspot.com/x/patch.diff?x=172b8ad2580000