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| author | Jia-Ju Bai <baijiaju1990@gmail.com> | 2018-06-20 12:50:16 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-06-28 16:05:05 +0300 |
| commit | 05e540b27718fee5135655e9d60ae05069dcba36 (patch) | |
| tree | 716b5dfcef3b3b5462df4ef76c10b3b1686b073c /tools/perf/scripts/python | |
| parent | 8498887660dfc9a07659ad545bfec389eb1d1d3f (diff) | |
| download | linux-05e540b27718fee5135655e9d60ae05069dcba36.tar.xz | |
staging: rtl8723bs: Fix two possible sleep-in-atomic-context bugs in translate_scan()
The driver may sleep with holding a spinlock.
The function call paths (from bottom to top) in Linux-4.16.7 are:
[FUNC] kzalloc(GFP_KERNEL)
drivers/staging/rtl8723bs/os_dep/ioctl_linux.c, 323:
kzalloc in translate_scan
drivers/staging/rtl8723bs/os_dep/ioctl_linux.c, 1554:
translate_scan in rtw_wx_get_scan
drivers/staging/rtl8723bs/os_dep/ioctl_linux.c, 1533:
spin_lock_bh in rtw_wx_get_scan
[FUNC] kzalloc(GFP_KERNEL)
drivers/staging/rtl8723bs/os_dep/ioctl_linux.c, 455:
kzalloc in translate_scan
drivers/staging/rtl8723bs/os_dep/ioctl_linux.c, 1554:
translate_scan in rtw_wx_get_scan
drivers/staging/rtl8723bs/os_dep/ioctl_linux.c, 1533:
spin_lock_bh in rtw_wx_get_scan
To fix these bugs, GFP_KERNEL is replaced with GFP_ATOMIC.
These bugs are found by my static analysis tool (DSAC-2) and checked by
my code review.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions