Message-ID: <000000000000a55d7d058d51ad4f@google.com>
Date:   Wed, 10 Jul 2019 04:07:08 -0700
From:   syzbot <syzbot+cf35b76f35e068a1107f@...kaller.appspotmail.com>
To:     andreyknvl@...gle.com, bgolaszewski@...libre.com,
        linus.walleij@...aro.org, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: WARNING in gpio_to_desc

Hello,

syzbot found the following crash on:

HEAD commit:    7829a896 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=136a97d8600000
kernel config:  https://syzkaller.appspot.com/x/.config?x=f6d4561982f71f63
dashboard link: https://syzkaller.appspot.com/bug?extid=cf35b76f35e068a1107f
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15660838600000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15ff38cfa00000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+cf35b76f35e068a1107f@...kaller.appspotmail.com

usb 1-1: config 0 interface 60 altsetting 0 bulk endpoint 0x2 has invalid  
maxpacket 0
usb 1-1: New USB device found, idVendor=1286, idProduct=2046,  
bcdDevice=33.1a
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: config 0 descriptor??
usb 1-1: NFC: intf 000000003523355a id 0000000011a20f39
nfcmrvl 1-1:0.60: NFC: failed to request reset_n io
------------[ cut here ]------------
invalid GPIO -22
WARNING: CPU: 1 PID: 21 at drivers/gpio/gpiolib.c:124 gpio_to_desc  
drivers/gpio/gpiolib.c:124 [inline]
WARNING: CPU: 1 PID: 21 at drivers/gpio/gpiolib.c:124  
gpio_to_desc+0x152/0x1f0 drivers/gpio/gpiolib.c:106
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 21 Comm: kworker/1:1 Not tainted 5.2.0-rc6+ #13
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+0x292/0x6c9 kernel/panic.c:219
  __warn.cold+0x20/0x4b kernel/panic.c:576
  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:gpio_to_desc drivers/gpio/gpiolib.c:124 [inline]
RIP: 0010:gpio_to_desc+0x152/0x1f0 drivers/gpio/gpiolib.c:106
Code: 00 00 77 13 e8 cf e0 57 ff 4c 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3  
e8 bc e0 57 ff 89 ee 48 c7 c7 80 24 db 85 e8 59 a5 2d ff <0f> 0b eb d6 e8  
a5 e0 57 ff 48 c7 c7 80 d6 08 87 4c 89 f6 e8 f6 23
RSP: 0018:ffff8881d9eff138 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff8881d1605180 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8127ef3d RDI: ffffed103b3dfe19
RBP: 00000000ffffffea R08: ffff8881d9e36000 R09: ffffed103b663ed7
R10: ffffed103b663ed6 R11: ffff8881db31f6b7 R12: ffff8881d1605180
R13: 0000000000000000 R14: 0000000000000293 R15: 0000000000000000
  __gpio_set_value include/asm-generic/gpio.h:104 [inline]
  gpio_set_value include/linux/gpio.h:71 [inline]
  nfcmrvl_chip_halt+0x4e/0x70 drivers/nfc/nfcmrvl/main.c:259
  nfcmrvl_nci_register_dev+0x2d4/0x378 drivers/nfc/nfcmrvl/main.c:176
  nfcmrvl_probe+0x4e9/0x5e0 drivers/nfc/nfcmrvl/usb.c:344
  usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361
  really_probe+0x281/0x660 drivers/base/dd.c:509
  driver_probe_device+0x104/0x210 drivers/base/dd.c:670
  __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:777
  bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454
  __device_attach+0x217/0x360 drivers/base/dd.c:843
  bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514
  device_add+0xae6/0x16f0 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+0x99/0x100 drivers/usb/core/driver.c:266
  really_probe+0x281/0x660 drivers/base/dd.c:509
  driver_probe_device+0x104/0x210 drivers/base/dd.c:670
  __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:777
  bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454
  __device_attach+0x217/0x360 drivers/base/dd.c:843
  bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514
  device_add+0xae6/0x16f0 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+0x1ada/0x3590 drivers/usb/core/hub.c:5432
  process_one_work+0x905/0x1570 kernel/workqueue.c:2269
  worker_thread+0x96/0xe20 kernel/workqueue.c:2415
  kthread+0x30b/0x410 kernel/kthread.c:255
  ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..


---
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