From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f69.google.com (mail-oo1-f69.google.com [209.85.161.69]) (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 881EE322B7D for ; Mon, 4 May 2026 20:51:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.69 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777927866; cv=none; b=GdhmTWRQTqBebi5OJn3b9ToEzkoQkuCydKo7x551oNKFR2Xnndkc9i904MujMcK3Owpb4BebsjWg6ykkaigQcjRbz6jmxNm5hCkiIpMi3SS+z071aOnrQcIlSfDyoyiIT63ftHesepfsgCzfe/sFCyJW2peOdGqpvBzrwE4E7D8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777927866; c=relaxed/simple; bh=bxWWR4VPDW5qg1KudL2JQqP2ZeWsXcqywzLzmbWXB3o=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=j2cVxo8L+FSIt6OQVi6Cfs5G9JLSpOW15GLp/A94czW7T5znrBIFjpQ+OTGKMbAxQGXDqvjP1q8KWfx45jJkhYHS7i9oT44uT1t3qhSI5SpN5YGLOo/h5YWOYxUp5y2SV2i8EpJu3EIYOVYEBfom7yjT3gO+3G616WxlBvuXU6w= 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=209.85.161.69 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-f69.google.com with SMTP id 006d021491bc7-694867ca29cso9346953eaf.2 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=ZudSCFG96EVc0+I4aGy4yXK84nQYEoX5fOLccuRZRvTSlnZo5tBcMKB17xRfdlIXWj AqO9h4hX+Oc+y0K+gRaq08HRS1atqdZ1lKVZyDKeLKYN/NSCVu+BHM8jkX4bnzzpbMG5 tW5XYEM3pe3tQ3TJsqWe0cTw9SHJiGyIZsnE4vHrn+9SWQpTCp/ERRwsSWuiOJaevDwy WdQS4cG/HnjrqripA7zktS+ZKENloP7mVC0fpZZTwUS8kpjkT5d9UuR1bMoI9WMfh65h ELvCIQ9DrZdooY6wLRF0at9te4ch8pZ05rI0oRcoFBqutObEj3Sxhg96S2w1WTg03UZK bTdQ== X-Forwarded-Encrypted: i=1; AFNElJ8/tM2x9dzq5JqakdNk9aVjAYnTI2KAkYZVpBOqgV6quhgWLbYR4huRRJMLSAlqpWA3J4lDDmGgW9Co6hnR@vger.kernel.org X-Gm-Message-State: AOJu0YzK/QhEMmdxAS6QzFoWlUVlecy7rx7J06upiwvUFqOmoCHBUsSY V+BFUfdd2Nvf/nJRkFHNIj7R+bYdTos5bQzWwyR6LqTV69WHSJ7kL4CmkLdXc8QaXOFLifGZhFX 42R9LEg1NQQYMYeZl9LRMp4sn2ajsMEpTxGTP/ctPmB0VRK4f5xeC3ni33Lo= Precedence: bulk X-Mailing-List: linux-fsdevel@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