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| author | Jia-Ju Bai <baijiaju1990@163.com> | 2017-10-08 19:54:07 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-12-20 10:10:35 +0100 |
| commit | f2d81d0f030afc7a873bb3454eaf59f384543baf (patch) | |
| tree | 15193b60799c759b392cbc03bdfece9f377984e9 /drivers/staging | |
| parent | f898f36664a5d64a55c1257e55dfacaae6a86bb7 (diff) | |
rtl8188eu: Fix a possible sleep-in-atomic bug in rtw_disassoc_cmd
[ Upstream commit 08880f8e08cbd814e870e9d3ab9530abc1bce226 ]
The driver may sleep under a spinlock, and the function call path is:
rtw_set_802_11_bssid(acquire the spinlock)
rtw_disassoc_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 430b8eb58976..be8542676adf 100644 --- a/drivers/staging/rtl8188eu/core/rtw_cmd.c +++ b/drivers/staging/rtl8188eu/core/rtw_cmd.c @@ -508,7 +508,7 @@ u8 rtw_disassoc_cmd(struct adapter *padapter, u32 deauth_timeout_ms, bool enqueu if (enqueue) { /* need enqueue, prepare cmd_obj and enqueue */ - cmdobj = kzalloc(sizeof(*cmdobj), GFP_KERNEL); + cmdobj = kzalloc(sizeof(*cmdobj), GFP_ATOMIC); if (!cmdobj) { res = _FAIL; kfree(param); |