Hello,
syzbot found the following crash on:
HEAD commit: 69bbe8c7 usb-fuzzer: main usb gadget fuzzer driver
git tree: https://github.com/google/kasan.git usb-fuzzer
console output: https://syzkaller.appspot.com/x/log.txt?x=143d5972a00000
kernel config: https://syzkaller.appspot.com/x/.config?x=c309d28e15db39c5
dashboard link: https://syzkaller.appspot.com/bug?extid=c2a1fa67c02faa0de723
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+c2a1fa67c02faa0de723@xxxxxxxxxxxxxxxxxxxxxxxxx
usb 2-1: Direct firmware load for prism2_ru.fw failed with error -2
prism2_usb 2-1:0.191 (unnamed net_device) (uninitialized): prism2_usb:
Firmware not available, but not essential
prism2_usb 2-1:0.191 (unnamed net_device) (uninitialized): prism2_usb: can
continue to use card anyway.
------------[ cut here ]------------
usb 2-1: BOGUS urb xfer, pipe 3 != type 1
WARNING: CPU: 0 PID: 5587 at drivers/usb/core/urb.c:477
usb_submit_urb+0x1188/0x13b0 drivers/usb/core/urb.c:477
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 5587 Comm: kworker/0:2 Not tainted 5.2.0-rc1+ #9
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:77 [inline]
dump_stack+0xca/0x13e lib/dump_stack.c:113
panic+0x292/0x6df kernel/panic.c:218
__warn.cold+0x20/0x45 kernel/panic.c:575
report_bug+0x262/0x2a0 lib/bug.c:186
fixup_bug arch/x86/kernel/traps.c:179 [inline]
fixup_bug arch/x86/kernel/traps.c:174 [inline]
do_error_trap+0x12b/0x1e0 arch/x86/kernel/traps.c:272
do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:291
invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:986
RIP: 0010:usb_submit_urb+0x1188/0x13b0 drivers/usb/core/urb.c:477
Code: 4d 85 ed 74 2c e8 b8 de e5 fd 4c 89 f7 e8 b0 7e 11 ff 41 89 d8 44 89
e1 4c 89 ea 48 89 c6 48 c7 c7 80 a3 17 86 e8 73 9b bb fd <0f> 0b e9 20 f4
ff ff e8 8c de e5 fd 4c 89 f2 48 b8 00 00 00 00 00
RSP: 0018:ffff8881cb876f98 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff812824fd RDI: ffffed103970ede5
RBP: ffff8881d33a5c00 R08: ffff8881cbf5b000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000003
R13: ffff8881d2fa3918 R14: ffff8881d5feab20 R15: ffff8881d60e8008
submit_rx_urb+0x2e1/0x3e0 drivers/staging/wlan-ng/hfa384x_usb.c:353
hfa384x_drvr_start+0x1cb/0x420 drivers/staging/wlan-ng/hfa384x_usb.c:2484
prism2sta_ifstate+0x2ea/0x4a0 drivers/staging/wlan-ng/prism2sta.c:471
prism2sta_probe_usb.cold+0x1c8/0x49e
drivers/staging/wlan-ng/prism2usb.c:112
usb_probe_interface+0x30b/0x7a0 drivers/usb/core/driver.c:361
really_probe+0x287/0x660 drivers/base/dd.c:509
driver_probe_device+0x104/0x210 drivers/base/dd.c:670
__device_attach_driver+0x1c4/0x230 drivers/base/dd.c:777
bus_for_each_drv+0x15e/0x1e0 drivers/base/bus.c:454
__device_attach+0x217/0x360 drivers/base/dd.c:843
bus_probe_device+0x1e6/0x290 drivers/base/bus.c:514
device_add+0xae6/0x1700 drivers/base/core.c:2111
usb_set_configuration+0xdf6/0x1670 drivers/usb/core/message.c:2023
generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210
usb_probe_device+0xa2/0x100 drivers/usb/core/driver.c:266
really_probe+0x287/0x660 drivers/base/dd.c:509
driver_probe_device+0x104/0x210 drivers/base/dd.c:670
__device_attach_driver+0x1c4/0x230 drivers/base/dd.c:777
bus_for_each_drv+0x15e/0x1e0 drivers/base/bus.c:454
__device_attach+0x217/0x360 drivers/base/dd.c:843
bus_probe_device+0x1e6/0x290 drivers/base/bus.c:514
device_add+0xae6/0x1700 drivers/base/core.c:2111
usb_new_device.cold+0x8c1/0x1016 drivers/usb/core/hub.c:2534
hub_port_connect drivers/usb/core/hub.c:5089 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5204 [inline]
port_event drivers/usb/core/hub.c:5350 [inline]
hub_event+0x1adc/0x35a0 drivers/usb/core/hub.c:5432
process_one_work+0x90a/0x1580 kernel/workqueue.c:2268
worker_thread+0x96/0xe20 kernel/workqueue.c:2414
kthread+0x30e/0x420 kernel/kthread.c:254
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..
---
This bug 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 bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
