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| author | Jia-Ju Bai <baijiaju1990@163.com> | 2017-10-08 19:54:45 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-12-20 10:07:33 +0100 |
| commit | 6641d3e307f5b42237a99f2aa961051a71c50393 (patch) | |
| tree | 9543f4fdf30caf6d1dd3038411208f0a58bd99f5 /drivers/staging | |
| parent | 28e006e14ff9b2fe55078c02bb92212b09664517 (diff) | |
rtl8188eu: Fix a possible sleep-in-atomic bug in rtw_createbss_cmd
[ Upstream commit 2bf9806d4228f7a6195f8e03eda0479d2a93b411 ]
The driver may sleep under a spinlock, and the function call path is:
rtw_surveydone_event_callback(acquire the spinlock)
rtw_createbss_cmd
kzalloc(GFP_KERNEL) --> may sleep
To fix it, GFP_KERNEL is replaced with GFP_ATOMIC.
This bug is found by my static analysis tool and my code review.
Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/rtl8188eu/core/rtw_cmd.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/staging/rtl8188eu/core/rtw_cmd.c b/drivers/staging/rtl8188eu/core/rtw_cmd.c index f1f4788dbd86..318d5b002272 100644 --- a/drivers/staging/rtl8188eu/core/rtw_cmd.c +++ b/drivers/staging/rtl8188eu/core/rtw_cmd.c @@ -342,7 +342,7 @@ u8 rtw_createbss_cmd(struct adapter *padapter) else RT_TRACE(_module_rtl871x_cmd_c_, _drv_info_, (" createbss for SSid:%s\n", pmlmepriv->assoc_ssid.Ssid)); - pcmd = kzalloc(sizeof(struct cmd_obj), GFP_KERNEL); + pcmd = kzalloc(sizeof(struct cmd_obj), GFP_ATOMIC); if (!pcmd) { res = _FAIL; goto exit; |