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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> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260827093322.f99541b28aad2a3c069ed155@linux-foundation.org> X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 0F46A4000B X-Stat-Signature: ng7uo7irkm4ziz7syrjq45k1ejgbuo9d X-Rspam-User: X-HE-Tag: 1787853030-992622 X-HE-Meta: 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 Ey9bUVMy 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 RGxIYyWx CyPMJk7BJ5FD289PFPti9A== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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