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Thu, 24 Sep 2026 03:09:23 -0700 (PDT) Received: from google.com ([2a00:79e0:2031:6:564:f2fc:acc1:e4c8]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3a082872cfasm3159170a91.2.2026.09.24.03.09.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Sep 2026 03:09:23 -0700 (PDT) Date: Thu, 24 Sep 2026 19:09:19 +0900 From: Sergey Senozhatsky To: syzbot Cc: axboe@kernel.dk, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, minchan@kernel.org, senozhatsky@chromium.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [block?] WARNING: zero-size vmalloc in disksize_store Message-ID: References: <6ab152fc.71f81b7d.15fa6d.0031.GAE@google.com> Precedence: bulk X-Mailing-List: linux-block@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: <6ab152fc.71f81b7d.15fa6d.0031.GAE@google.com> On (26/09/21 08:53), syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 73ae59e97596 Merge tag 'erofs-for-7.3-rc1-2' of git://git... > git tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux master > console output: https://syzkaller.appspot.com/x/log.txt?x=11d5d525580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=c35e49327a11721f > dashboard link: https://syzkaller.appspot.com/bug?extid=fb23651a7efbea8868ed > compiler: aarch64-linux-gnu-gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 > userspace arch: arm64 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=175514c9580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=123b1005580000 #syz fix: zram: switch to unsigned long indexing