Hello, syzbot found the following issue on: HEAD commit: 9e39aef3 usb: misc: brcmstb-usb-pinmap: Make sync_all_pins.. 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=145ffa8a500000 kernel config: https://syzkaller.appspot.com/x/.config?x=a05f5efbb00b1465 dashboard link: https://syzkaller.appspot.com/bug?extid=92340f7b2b4789907fdb compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=172ae7a8500000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13b24746500000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+92340f7b2b4789907fdb@xxxxxxxxxxxxxxxxxxxxxxxxx microsoft 0003:045E:07DA.0001: unknown main item tag 0x0 HID 045e:07da: Invalid code 65791 type 1 ------------[ cut here ]------------ init_uevent_argv: buffer size too small WARNING: CPU: 0 PID: 5 at lib/kobject_uevent.c:259 init_uevent_argv lib/kobject_uevent.c:259 [inline] WARNING: CPU: 0 PID: 5 at lib/kobject_uevent.c:259 kobject_uevent_env+0x1640/0x1680 lib/kobject_uevent.c:608 Modules linked in: CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.10.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event RIP: 0010:init_uevent_argv lib/kobject_uevent.c:259 [inline] RIP: 0010:kobject_uevent_env+0x1640/0x1680 lib/kobject_uevent.c:608 Code: 87 e8 24 af fe ff e9 cf f8 ff ff 48 8b 3c 24 e8 06 33 68 ff e9 a9 f8 ff ff e8 cc 9e 3c ff 48 c7 c7 e0 68 00 86 e8 59 b9 71 03 <0f> 0b 41 bf f4 ff ff ff e9 51 ec ff ff 4c 89 ff e8 5b 32 68 ff e9 RSP: 0018:ffffc9000005e8e0 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 RDX: ffff88810022e500 RSI: ffffffff8128fe63 RDI: fffff5200000bd0e RBP: 00000000000007fb R08: 0000000000000001 R09: ffff8881f6a1febb R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000005 R13: 00000000000007fb R14: 0000000000000005 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881f6a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000006d0090 CR3: 0000000103ed4000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: device_add+0xb47/0x1ce0 drivers/base/core.c:2919 input_register_device+0x73a/0xce0 drivers/input/input.c:2212 hidinput_connect+0x5056/0x9d50 drivers/hid/hid-input.c:1949 hid_connect+0x958/0xbc0 drivers/hid/hid-core.c:1949 hid_hw_start drivers/hid/hid-core.c:2053 [inline] hid_hw_start+0xa2/0x130 drivers/hid/hid-core.c:2044 ms_probe+0x159/0x4b0 drivers/hid/hid-microsoft.c:391 hid_device_probe+0x2bd/0x3f0 drivers/hid/hid-core.c:2281 really_probe+0x291/0xde0 drivers/base/dd.c:554 driver_probe_device+0x26b/0x3d0 drivers/base/dd.c:738 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:844 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431 __device_attach+0x228/0x4a0 drivers/base/dd.c:912 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491 device_add+0xbb2/0x1ce0 drivers/base/core.c:2938 hid_add_device+0x344/0x9d0 drivers/hid/hid-core.c:2437 usbhid_probe+0xaae/0xfc0 drivers/hid/usbhid/hid-core.c:1407 usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396 really_probe+0x291/0xde0 drivers/base/dd.c:554 driver_probe_device+0x26b/0x3d0 drivers/base/dd.c:738 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:844 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431 __device_attach+0x228/0x4a0 drivers/base/dd.c:912 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491 device_add+0xbb2/0x1ce0 drivers/base/core.c:2938 usb_set_configuration+0x113c/0x1910 drivers/usb/core/message.c:2168 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238 usb_probe_device+0xd9/0x2c0 drivers/usb/core/driver.c:293 really_probe+0x291/0xde0 drivers/base/dd.c:554 driver_probe_device+0x26b/0x3d0 drivers/base/dd.c:738 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:844 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431 __device_attach+0x228/0x4a0 drivers/base/dd.c:912 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491 device_add+0xbb2/0x1ce0 drivers/base/core.c:2938 usb_new_device.cold+0x71d/0xfe9 drivers/usb/core/hub.c:2555 hub_port_connect drivers/usb/core/hub.c:5223 [inline] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] port_event drivers/usb/core/hub.c:5509 [inline] hub_event+0x2348/0x42d0 drivers/usb/core/hub.c:5591 process_one_work+0x933/0x1520 kernel/workqueue.c:2272 worker_thread+0x64c/0x1120 kernel/workqueue.c:2418 kthread+0x38c/0x460 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 --- This report is generated by a bot. 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