From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 6C591332614 for ; Thu, 27 Aug 2026 17:50:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787853031; cv=none; b=HOJZelKbrtAhgK71QTmDJDGHDSQctY2Sc42o6FHaEq+8krxyDPRBmCKZ2ZYle5ZIR3x7qiPDIh325zRG5uFKggJlCR30mOzozolCDFil1s3H/APng4gUikv7tqiWMOG+7Y2GmaHk/faidjB5WXl6WoLdZUS8o7atDxrZSBjrO1c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787853031; c=relaxed/simple; bh=JDSPgox7O4JApWFPJJWB+2XXaeIKA/wudHnaSYzTd5g=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=CgTaPNCtpRU0L4NCf4OOTxOR6KXlgmVqnQa6X8w8GkijwwsZkX5EzGAIzHqpSVKbKnqbA89ZrgbIU8OE366/HRqoUPuwsoBZvWMkIE4vUG8heqIG+VS8JviKyT2TbETjeLoph+E0bNE+lWi7gbhScftJKqO2yYGzQHobXpdv+Ec= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fWvmVk25; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="fWvmVk25" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CE8591F000E9; Thu, 27 Aug 2026 17:50:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1787853030; bh=7LyDiwZ/dL1+I6iznOnKyyWmM8BHa0i9q//GZQBdPIM=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=fWvmVk25vsFxN9BucJRSFoWwejL9SqfMeHC8Oec98TjRzyaTrrboulTp18D6s7ycy aC0eGeeU2PLt5/xIixbsS3sD0/c3+Kb+2ZaU2LTISaQI8gAQfSm1MvpboK5rYWfI9H 6PSCj4k6dCl5xikrHD4ORtsB6uMnGgDIbFYDVpIVJBaOGwZmlx+FWhAVYug2v70zFk L7Ap9c3ZYUxouOXvnuL+OAiZCpWqQhuzCPvGp3XXVxEVkaZmHorJzn/vH7Gsdax2l0 3tFZYqqYtX46EfMPk5MPImz67oTZs3qNqQL3aVsw0h+Jq8G23+9kAttqxGmyuyY/tW 7RC39dvm46rWA== Date: Thu, 27 Aug 2026 18:50:25 +0100 From: "Lorenzo Stoakes (ARM)" To: Andrew Morton Cc: syzbot , jannh@google.com, liam@infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, pfalcato@suse.de, syzkaller-bugs@googlegroups.com, vbabka@kernel.org Subject: Re: [syzbot] [mm?] WARNING in __split_vma Message-ID: References: <6a8ff666.27659fcc.2ceef7.000f.GAE@google.com> <20260827093322.f99541b28aad2a3c069ed155@linux-foundation.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260827093322.f99541b28aad2a3c069ed155@linux-foundation.org> On Thu, Aug 27, 2026 at 09:33:22AM -0700, Andrew Morton wrote: > On Thu, 27 Aug 2026 01:33:42 -0700 syzbot wrote: > > > Hello, > > > > syzbot found the following issue on: > > > > HEAD commit: 818bebeb63dd drm/xe: Don't hand out the flat CCS storage a.. > > git tree: upstream > > console output: https://syzkaller.appspot.com/x/log.txt?x=1645f979580000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=ccca94d2c01b9e78 > > dashboard link: https://syzkaller.appspot.com/bug?extid=5c417b73ac02e0e352c4 > > compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=104a0d49580000 > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13f35979580000 > > > > Downloadable assets: > > disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-818bebeb.raw.xz > > vmlinux: https://storage.googleapis.com/syzbot-assets/6e4100526b12/vmlinux-818bebeb.xz > > kernel image: https://storage.googleapis.com/syzbot-assets/723c4783ee96/bzImage-818bebeb.xz > > > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > > Reported-by: syzbot+5c417b73ac02e0e352c4@syzkaller.appspotmail.com > > Thanks. > > Hopefully fixed by the pending "mm/mremap: reset unfaulted VMA page > offset for MREMAP_DONTUNMAP". > > https://lore.kernel.org/20260825-fix-mremap-dontunmap-pgoff-v1-1-39a40b2c98b3@kernel.org Sorry, yeah, this looks to be the exact same thing, marked as dupe! -- Cheers, Lorenzo