Hello, syzbot found the following issue on: HEAD commit: 89e84f946479 usb: typec: tipd: Remove FIXME about testing .. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing console output: https://syzkaller.appspot.com/x/log.txt?x=1638063f300000 kernel config: https://syzkaller.appspot.com/x/.config?x=cd8a1eadba1e4ce4 dashboard link: https://syzkaller.appspot.com/bug?extid=cf1553a86d1962a0c79f compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=158c3deb300000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1190df03300000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+cf1553a86d1962a0c79f@xxxxxxxxxxxxxxxxxxxxxxxxx usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 1-1: Product: syz usb 1-1: Manufacturer: syz usb 1-1: SerialNumber: syz usb 1-1: config 0 descriptor?? ================================================================== BUG: KASAN: global-out-of-bounds in usb_match_device+0x4dc/0x550 drivers/usb/core/driver.c:641 Read of size 2 at addr ffffffff87bdfd50 by task kworker/0:1/7 CPU: 0 PID: 7 Comm: kworker/0:1 Not tainted 5.15.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description.constprop.0.cold+0xf/0x309 mm/kasan/report.c:256 __kasan_report mm/kasan/report.c:442 [inline] kasan_report.cold+0x83/0xdf mm/kasan/report.c:459 usb_match_device+0x4dc/0x550 drivers/usb/core/driver.c:641 usb_match_one_id drivers/usb/core/driver.c:722 [inline] usb_match_id.part.0+0x10d/0x1b0 drivers/usb/core/driver.c:816 usb_match_id+0x23/0x40 drivers/usb/core/driver.c:806 ehset_prepare_port_for_testing+0x4a/0xf0 drivers/usb/misc/ehset.c:43 ehset_probe+0x271/0x460 drivers/usb/misc/ehset.c:82 usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x245/0xcc0 drivers/base/dd.c:596 __driver_probe_device+0x338/0x4d0 drivers/base/dd.c:751 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:781 __device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:898 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x228/0x4a0 drivers/base/dd.c:969 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xc35/0x21b0 drivers/base/core.c:3359 usb_set_configuration+0x113f/0x1910 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238 usb_probe_device+0xd9/0x2c0 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x245/0xcc0 drivers/base/dd.c:596 __driver_probe_device+0x338/0x4d0 drivers/base/dd.c:751 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:781 __device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:898 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x228/0x4a0 drivers/base/dd.c:969 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xc35/0x21b0 drivers/base/core.c:3359 usb_new_device.cold+0x63f/0x108e drivers/usb/core/hub.c:2563 hub_port_connect drivers/usb/core/hub.c:5348 [inline] hub_port_connect_change drivers/usb/core/hub.c:5488 [inline] port_event drivers/usb/core/hub.c:5634 [inline] hub_event+0x2357/0x4330 drivers/usb/core/hub.c:5716 process_one_work+0x9bf/0x1620 kernel/workqueue.c:2297 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444 kthread+0x3c2/0x4a0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 The buggy address belongs to the variable: platform_bus+0x530/0x560 Memory state around the buggy address: ffffffff87bdfc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffffff87bdfc80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffffffff87bdfd00: 00 00 00 00 00 00 00 00 00 f9 f9 f9 f9 f9 f9 f9 ^ ffffffff87bdfd80: 00 00 00 00 00 00 00 00 00 00 f9 f9 f9 f9 f9 f9 ffffffff87bdfe00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
