Hi! I've got the following report while fuzzing the kernel with syzkaller. On commit 3a99df9a3d14cd866b5516f8cba515a3bfd554ab (4.14-rc7+). Looks like there's no check for the actual endpoint types. usb 1-1: BOGUS urb xfer, pipe 3 != type 1 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 2263 at drivers/usb/core/urb.c:471 usb_submit_urb+0x113e/0x1400 Modules linked in: CPU: 1 PID: 2263 Comm: kworker/1:2 Not tainted 4.14.0-rc7-44290-gf28444df2601-dirty #52 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Workqueue: usb_hub_wq hub_event task: ffff880064abae00 task.stack: ffff880064ac0000 RIP: 0010:usb_submit_urb+0x113e/0x1400 drivers/usb/core/urb.c:470 RSP: 0018:ffff880064ac73e0 EFLAGS: 00010282 RAX: 0000000000000029 RBX: ffff88006a4d4208 RCX: ffffffff812495b5 RDX: 0000000000000000 RSI: ffffffff8124d76a RDI: 0000000000000005 RBP: ffff880064ac7450 R08: ffff880064abae00 R09: 0000000000000006 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000003 R13: 0000000000000001 R14: ffff880069a23978 R15: ffff88006a4d428c FS: 0000000000000000(0000) GS:ffff88006cb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2086e30000 CR3: 000000006ad05000 CR4: 00000000000006e0 Call Trace: submit_rx_urb+0x2f4/0x4a0 drivers/staging/wlan-ng/hfa384x_usb.c:352 hfa384x_drvr_start+0x182/0x7c0 drivers/staging/wlan-ng/hfa384x_usb.c:2484 prism2sta_ifstate+0x36e/0x2340 drivers/staging/wlan-ng/prism2sta.c:476 prism2sta_probe_usb+0x722/0x980 drivers/staging/wlan-ng/prism2usb.c:111 usb_probe_interface+0x324/0x940 drivers/usb/core/driver.c:361 really_probe drivers/base/dd.c:413 driver_probe_device+0x522/0x740 drivers/base/dd.c:557 __device_attach_driver+0x25d/0x2d0 drivers/base/dd.c:653 bus_for_each_drv+0xff/0x160 drivers/base/bus.c:463 __device_attach+0x1a8/0x2a0 drivers/base/dd.c:710 device_initial_probe+0x1f/0x30 drivers/base/dd.c:757 bus_probe_device+0x1fc/0x2a0 drivers/base/bus.c:523 device_add+0xc27/0x15a0 drivers/base/core.c:1835 usb_set_configuration+0xd4f/0x17a0 drivers/usb/core/message.c:1932 generic_probe+0xbb/0x120 drivers/usb/core/generic.c:174 usb_probe_device+0xab/0x100 drivers/usb/core/driver.c:266 really_probe drivers/base/dd.c:413 driver_probe_device+0x522/0x740 drivers/base/dd.c:557 __device_attach_driver+0x25d/0x2d0 drivers/base/dd.c:653 bus_for_each_drv+0xff/0x160 drivers/base/bus.c:463 __device_attach+0x1a8/0x2a0 drivers/base/dd.c:710 device_initial_probe+0x1f/0x30 drivers/base/dd.c:757 bus_probe_device+0x1fc/0x2a0 drivers/base/bus.c:523 device_add+0xc27/0x15a0 drivers/base/core.c:1835 usb_new_device+0x7fa/0x1090 drivers/usb/core/hub.c:2538 hub_port_connect drivers/usb/core/hub.c:4987 hub_port_connect_change drivers/usb/core/hub.c:5093 port_event drivers/usb/core/hub.c:5199 hub_event_impl+0x17b8/0x3440 drivers/usb/core/hub.c:5311 hub_event+0x38/0x50 drivers/usb/core/hub.c:5209 process_one_work+0x925/0x15d0 kernel/workqueue.c:2113 worker_thread+0xef/0x10d0 kernel/workqueue.c:2247 kthread+0x346/0x410 kernel/kthread.c:231 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431 Code: 75 aa fd 48 8b 45 d0 48 8d b8 98 00 00 00 e8 4a cf f4 fe 45 89 e8 44 89 e1 4c 89 f2 48 89 c6 48 c7 c7 10 62 20 86 e8 8c 3e 99 fd <0f> ff e9 ce f4 ff ff e8 c6 75 aa fd 48 8b 45 d0 48 8d b8 e8 00 ---[ end trace ba22faf9f57546ae ]--- _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
