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| Filename | Latest commit message | Latest commit date |
|---|---|---|
58762f1c63
[ Upstream commit d1b57669732d09da7e13ef86d058dab0cd57f6e0 ]
When r8712_usbctrl_vendorreq() returns negative, 'data' in
usb_read{8,16,32} will not be initialized.
BUG: KMSAN: uninit-value in string_nocheck lib/vsprintf.c:643 [inline]
BUG: KMSAN: uninit-value in string+0x4ec/0x6f0 lib/vsprintf.c:725
string_nocheck lib/vsprintf.c:643 [inline]
string+0x4ec/0x6f0 lib/vsprintf.c:725
vsnprintf+0x2222/0x3650 lib/vsprintf.c:2806
va_format lib/vsprintf.c:1704 [inline]
pointer+0x18e6/0x1f70 lib/vsprintf.c:2443
vsnprintf+0x1a9b/0x3650 lib/vsprintf.c:2810
vprintk_store+0x537/0x2150 kernel/printk/printk.c:2158
vprintk_emit+0x28b/0xab0 kernel/printk/printk.c:2256
dev_vprintk_emit+0x5ef/0x6d0 drivers/base/core.c:4604
dev_printk_emit+0x1dd/0x21f drivers/base/core.c:4615
__dev_printk+0x3be/0x440 drivers/base/core.c:4627
_dev_info+0x1ea/0x22f drivers/base/core.c:4673
r871xu_drv_init+0x1929/0x3070 drivers/staging/rtl8712/usb_intf.c:401
usb_probe_interface+0xf19/0x1600 drivers/usb/core/driver.c:396
really_probe+0x6c7/0x1350 drivers/base/dd.c:621
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:752
driver_probe_device drivers/base/dd.c:782 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:899
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach+0x593/0x8e0 drivers/base/dd.c:970
device_initial_probe+0x4a/0x60 drivers/base/dd.c:1017
bus_probe_device+0x17b/0x3e0 drivers/base/bus.c:487
device_add+0x1fff/0x26e0 drivers/base/core.c:3405
usb_set_configuration+0x37e9/0x3ed0 drivers/usb/core/message.c:2170
usb_generic_driver_probe+0x13c/0x300 drivers/usb/core/generic.c:238
usb_probe_device+0x309/0x570 drivers/usb/core/driver.c:293
really_probe+0x6c7/0x1350 drivers/base/dd.c:621
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:752
driver_probe_device drivers/base/dd.c:782 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:899
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach+0x593/0x8e0 drivers/base/dd.c:970
device_initial_probe+0x4a/0x60 drivers/base/dd.c:1017
bus_probe_device+0x17b/0x3e0 drivers/base/bus.c:487
device_add+0x1fff/0x26e0 drivers/base/core.c:3405
usb_new_device+0x1b91/0x2950 drivers/usb/core/hub.c:2566
hub_port_connect drivers/usb/core/hub.c:5363 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5507 [inline]
port_event drivers/usb/core/hub.c:5665 [inline]
hub_event+0x58e3/0x89e0 drivers/usb/core/hub.c:5747
process_one_work+0xdb6/0x1820 kernel/workqueue.c:2289
worker_thread+0x10d0/0x2240 kernel/workqueue.c:2436
kthread+0x3c7/0x500 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
Local variable data created at:
usb_read8+0x5d/0x130 drivers/staging/rtl8712/usb_ops.c:33
r8712_read8+0xa5/0xd0 drivers/staging/rtl8712/rtl8712_io.c:29
KMSAN: uninit-value in r871xu_drv_init
https://syzkaller.appspot.com/bug?id=3cd92b1d85428b128503bfa7a250294c9ae00bd8
Reported-by: <syzbot+6f5ecd144854c0d8580b@syzkaller.appspotmail.com>
Tested-by: <syzbot+6f5ecd144854c0d8580b@syzkaller.appspotmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Wang Cheng <wanngchenng@gmail.com>
Link: https://lore.kernel.org/r/b9b7a6ee02c02aa28054f5cf16129977775f3cd9.1652618244.git.wanngchenng@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.