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Fri, 28 Mar 2025 13:53:19 -0700 (PDT) Received: from localhost ([129.210.115.104]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-73970e271absm2340148b3a.51.2025.03.28.13.53.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 28 Mar 2025 13:53:18 -0700 (PDT) Date: Fri, 28 Mar 2025 13:53:18 -0700 From: Cong Wang To: syzbot Cc: davem@davemloft.net, edumazet@google.com, horms@kernel.org, jhs@mojatatu.com, jiri@resnulli.us, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [net?] kernel BUG in skbprio_enqueue Message-ID: References: <67e521f9.050a0220.2f068f.0026.GAE@google.com> Precedence: bulk X-Mailing-List: netdev@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: <67e521f9.050a0220.2f068f.0026.GAE@google.com> On Thu, Mar 27, 2025 at 03:01:29AM -0700, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: f6e0150b2003 Merge tag 'mtd/for-6.15' of git://git.kernel... > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=13a14a4c580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=46a07195688b794b > dashboard link: https://syzkaller.appspot.com/bug?extid=a3422a19b05ea96bee18 > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=109e343f980000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1037abb0580000 > > Downloadable assets: > disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-f6e0150b.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/7ade4c34c9b1/vmlinux-f6e0150b.xz > kernel image: https://storage.googleapis.com/syzbot-assets/1fe37b97ec9d/bzImage-f6e0150b.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+a3422a19b05ea96bee18@syzkaller.appspotmail.com > > ------------[ cut here ]------------ > kernel BUG at net/sched/sch_skbprio.c:127! I am looking into this bug. BTW, it is not related to my qlen_notify patchset since it is not yet merged and this stack trace does not even involve qlen_notify. Thanks.