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AJvYcCXX7A7SsoJTA2l8IZohxI5uSBI/nEcWIErXNAE1eFWLRfQBxbiHLsbho7LbAaSHe2FxCwoxypg=@vger.kernel.org X-Gm-Message-State: AOJu0YwBNELzD0kMHYPockD1oVypVWvgYAHjC9i+35WIINCLKu/bNRq6 6sInEe1gE0a9mgB8GCZCnc8CPGVDklWgicM9ShTAdWNKKrwk2YpjQMHXx07rXprx8ndtR7BesUi j83gcIi/huOiY5uvyPzITMocw7zXaMl4vBNuSuEEKeYYdEdVCP3axIunAqTM= X-Google-Smtp-Source: AGHT+IER8rHkZb7o5CdFfjUuJKJFKzWg2Lr3WChYbhL47cIydC0zpBc3Cvdtsg86Gu7E4tkZUCkNR+ogQpn0f3GIRRMd4U/vDfEI Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:156a:b0:3e3:fe5e:9b96 with SMTP id e9e14a558f8ab-3e57e8a6872mr165247005ab.11.1755449553002; Sun, 17 Aug 2025 09:52:33 -0700 (PDT) Date: Sun, 17 Aug 2025 09:52:32 -0700 In-Reply-To: <689ff631.050a0220.e29e5.0035.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68a208d0.050a0220.e29e5.006e.GAE@google.com> Subject: Re: [syzbot] [usb?] UBSAN: shift-out-of-bounds in ax88772_bind From: syzbot To: andrew+netdev@lunn.ch, andrew@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" syzbot has found a reproducer for the following issue on: HEAD commit: 99bade344cfa Merge tag 'rust-fixes-6.17' of git://git.kern.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=13ea1234580000 kernel config: https://syzkaller.appspot.com/x/.config?x=ce98061fb8ee27bc dashboard link: https://syzkaller.appspot.com/bug?extid=20537064367a0f98d597 compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=126d13a2580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1754faf0580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/e140d0491611/disk-99bade34.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/f581d5a99c83/vmlinux-99bade34.xz kernel image: https://storage.googleapis.com/syzbot-assets/feceb1caceef/bzImage-99bade34.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+20537064367a0f98d597@syzkaller.appspotmail.com ------------[ cut here ]------------ UBSAN: shift-out-of-bounds in drivers/net/usb/asix_devices.c:679:27 shift exponent 208 is too large for 64-bit type 'unsigned long' CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Not tainted 6.17.0-rc1-syzkaller-00214-g99bade344cfa #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Workqueue: usb_hub_wq hub_event Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 ubsan_epilogue+0xa/0x40 lib/ubsan.c:233 __ubsan_handle_shift_out_of_bounds+0x386/0x410 lib/ubsan.c:494 ax88772_init_mdio drivers/net/usb/asix_devices.c:679 [inline] ax88772_bind+0xdcf/0xfa0 drivers/net/usb/asix_devices.c:910 usbnet_probe+0xa96/0x2870 drivers/net/usb/usbnet.c:1781 usb_probe_interface+0x668/0xc30 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x26a/0x9e0 drivers/base/dd.c:659 __driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:801 driver_probe_device+0x4f/0x430 drivers/base/dd.c:831 __device_attach_driver+0x2ce/0x530 drivers/base/dd.c:959 bus_for_each_drv+0x251/0x2e0 drivers/base/bus.c:462 __device_attach+0x2b8/0x400 drivers/base/dd.c:1031 bus_probe_device+0x185/0x260 drivers/base/bus.c:537 device_add+0x7b6/0xb50 drivers/base/core.c:3689 usb_set_configuration+0x1a87/0x20e0 drivers/usb/core/message.c:2210 usb_generic_driver_probe+0x8d/0x150 drivers/usb/core/generic.c:250 usb_probe_device+0x1c1/0x390 drivers/usb/core/driver.c:291 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x26a/0x9e0 drivers/base/dd.c:659 __driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:801 driver_probe_device+0x4f/0x430 drivers/base/dd.c:831 __device_attach_driver+0x2ce/0x530 drivers/base/dd.c:959 bus_for_each_drv+0x251/0x2e0 drivers/base/bus.c:462 __device_attach+0x2b8/0x400 drivers/base/dd.c:1031 bus_probe_device+0x185/0x260 drivers/base/bus.c:537 device_add+0x7b6/0xb50 drivers/base/core.c:3689 usb_new_device+0xa39/0x16f0 drivers/usb/core/hub.c:2694 hub_port_connect drivers/usb/core/hub.c:5566 [inline] hub_port_connect_change drivers/usb/core/hub.c:5706 [inline] port_event drivers/usb/core/hub.c:5870 [inline] hub_event+0x2958/0x4a20 drivers/usb/core/hub.c:5952 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x70e/0x8a0 kernel/kthread.c:463 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 ---[ end trace ]--- --- If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing.