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| author | Jia-Ju Bai <baijiaju1990@gmail.com> | 2018-06-20 18:01:19 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-06-26 11:47:29 +0800 |
| commit | f44426346289fee0a5c4bb366583fea71da0b95d (patch) | |
| tree | 8273e2d44b778bdd29fc87c070e0b2f781b498e8 /tools/perf/scripts/python/bin | |
| parent | f62252bf39445d4155c70871a8ce486f872d1442 (diff) | |
| download | kernel-f44426346289fee0a5c4bb366583fea71da0b95d.tar.gz | |
staging: rtl8188eu: Fix a possible sleep-in-atomic-context bug in rtw_disassoc_cmd()
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/rtl8188eu/core/rtw_cmd.c, 502:
kzalloc in rtw_disassoc_cmd
drivers/staging/rtl8188eu/core/rtw_ioctl_set.c, 256:
rtw_disassoc_cmd in rtw_set_802_11_ssid
drivers/staging/rtl8188eu/core/rtw_ioctl_set.c, 235:
spin_lock_bh in rtw_set_802_11_ssid
[FUNC] kzalloc(GFP_KERNEL)
drivers/staging/rtl8188eu/core/rtw_cmd.c, 502:
kzalloc in rtw_disassoc_cmd
drivers/staging/rtl8188eu/core/rtw_ioctl_set.c, 352:
rtw_disassoc_cmd in rtw_set_802_11_infrastructure_mode
drivers/staging/rtl8188eu/core/rtw_ioctl_set.c, 336:
spin_lock_bh in rtw_set_802_11_infrastructure_mode
To fix this bug, GFP_KERNEL is replaced with GFP_ATOMIC.
This bug is 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/bin')
0 files changed, 0 insertions, 0 deletions