From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp153-170.sina.com.cn (smtp153-170.sina.com.cn [61.135.153.170]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 396F61A239A for ; Sat, 28 Mar 2026 21:11:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=61.135.153.170 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774732313; cv=none; b=sR2uo88oE7acPlp0XyvsG5v8Moc5lNjSeHddfNsVG5+aNp/haTwFHI8t3/cO9w+oIpSCyYKJmWGDfmm8CqVuKoWrdvy0AtwllKIVDdUNxP8GFkVFSl9yH5DkcuZL62qiI55LI90OttqHyZfCgY7m9vuXWnG8vOXCKkJcC0XFukg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774732313; c=relaxed/simple; bh=x1KF3VUvJKMnwvgJtqvORA+nBgN1MElN1B3pDqoD6bY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=bOXBozspIIU2+SNF7FhpWOO4XqlYOTGN49yCAqjaELmfEpWGXhC0SNcawRTawwQk1o9NK6OOgSAltbmsNK9KyplzlR6CCs1ApNeGiX/1CPN0goJhbmD/KIKGCQ3M7pTXwIh6350E9RHGj+zsFw7IxXCRdjCRWd4MmmeZZGJF380= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sina.com; spf=pass smtp.mailfrom=sina.com; dkim=pass (1024-bit key) header.d=sina.com header.i=@sina.com header.b=w9gM3vNK; arc=none smtp.client-ip=61.135.153.170 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sina.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sina.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=sina.com header.i=@sina.com header.b="w9gM3vNK" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sina.com; s=201208; t=1774732306; bh=ZUkzZ9D1mRsmvB/2kqeiIBOtgxxGGWnSEDpz4d1SVqc=; h=From:Subject:Date:Message-ID; b=w9gM3vNKDXf42uRcE0ZzztUeoeuMq4RBkjkDqCge3xZLY6B4O8OjN3ms2f6qbq2XL Tc2U+JJFimYWifV8BY+nGe1Yb6ORjEcZNa/MtV2tYryUghOCN6OYdGpTA0QzHLoyo5 al/bzRPX7vbWph0UI419GImbsTPUycjcTV0QMgq4= X-SMAIL-HELO: localhost.localdomain Received: from unknown (HELO localhost.localdomain)([114.249.62.144]) by sina.com (10.54.253.34) with ESMTP id 69C8437C00005DD1; Sat, 29 Mar 2026 05:09:19 +0800 (CST) X-Sender: hdanton@sina.com X-Auth-ID: hdanton@sina.com Authentication-Results: sina.com; spf=none smtp.mailfrom=hdanton@sina.com; dkim=none header.i=none; dmarc=none action=none header.from=hdanton@sina.com X-SMAIL-MID: 3162436291843 X-SMAIL-UIID: 562DBEFB91D646C29BDFBE4581DE689B-20260329-050919-1 From: Hillf Danton To: syzbot Cc: brauner@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [fs?] general protection fault in __umount_mnt Date: Sun, 29 Mar 2026 05:09:06 +0800 Message-ID: <20260328210912.1571-1-hdanton@sina.com> In-Reply-To: <69c7d4aa.a70a0220.128fd0.0027.GAE@google.com> References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit > Date: Sat, 28 Mar 2026 06:16:26 -0700 [thread overview] > syzbot has found a reproducer for the following issue on: > > HEAD commit: 3b058d1aeeef Add linux-next specific files for 20260327 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=11bd16f6580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=4acce231a75c746f > dashboard link: https://syzkaller.appspot.com/bug?extid=e4470cc28308f2081ec8 > compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11dc6606580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15baca26580000 > #syz test: https://github.com/brauner/linux.git 14594a141c760dd4c462b38d73406e1b48e44b84