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linux/drivers/staging/rtl8723bs
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Jia-Ju Bai 8204b61a77 staging: rtl8723bs: Fix two sleep-in-atomic-context bugs in _rtw_pwr_wakeup() 
The driver may sleep with holding a spinlock.
The function call paths (from bottom to top) in Linux-4.17 are:

[FUNC] msleep
drivers/staging/rtl8723bs/core/rtw_pwrctrl.c, 1243:
	msleep in _rtw_pwr_wakeup
drivers/staging/rtl8723bs/core/rtw_ioctl_set.c, 510:
	_rtw_pwr_wakeup in rtw_set_802_11_disassociate
drivers/staging/rtl8723bs/core/rtw_ioctl_set.c, 501:
	spin_lock_bh in rtw_set_802_11_disassociate

[FUNC] msleep
drivers/staging/rtl8723bs/core/rtw_pwrctrl.c, 1255:
	msleep in _rtw_pwr_wakeup
drivers/staging/rtl8723bs/core/rtw_ioctl_set.c, 510:
	_rtw_pwr_wakeup in rtw_set_802_11_disassociate
drivers/staging/rtl8723bs/core/rtw_ioctl_set.c, 501:
	spin_lock_bh in rtw_set_802_11_disassociate

To fix these bugs, msleep() is replaced with mdelay().

These bugs are found by my static analysis tool DSAC.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-18 13:29:11 +02:00
..
core staging: rtl8723bs: Fix two sleep-in-atomic-context bugs in _rtw_pwr_wakeup() 2018-09-18 13:29:11 +02:00
hal staging: rtl8723bs: check for i out of range before accessing szLine[i] 2018-09-10 17:12:42 +02:00
include Staging/IIO patches for 4.19-rc1 2018-08-18 11:00:00 -07:00
os_dep Staging/IIO patches for 4.19-rc1 2018-08-18 11:00:00 -07:00
Kconfig
Makefile staging: rtl8723bs: Rename 'Hal8723BPwrSeq.{c, h}' to 'hal_pwr_seq.*'. 2018-05-25 18:47:22 +02:00
TODO