4.14-stable review patch. If anyone has any objections, please let me know.
------------------ From: Jia-Ju Bai <[email protected]> [ 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 <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> Signed-off-by: Sasha Levin <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/staging/rtl8188eu/core/rtw_cmd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/staging/rtl8188eu/core/rtw_cmd.c +++ b/drivers/staging/rtl8188eu/core/rtw_cmd.c @@ -333,7 +333,7 @@ u8 rtw_createbss_cmd(struct adapter *pa 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;
