Re: [PATCH] staging: r8188eu: Fix a couple scheduling in atomic bugs

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On 8/12/21 1:57 AM, Dan Carpenter wrote:
These allocations are sometimes done while holding a spin_lock so they
have to be atomic.  The call tree looks like this:

-> rtw_set_802_11_connect() <- takes a spin_lock
    -> rtw_do_join()
       -> rtw_sitesurvey_cmd()  <-- does a GFP_ATOMIC allocation
          -> p2p_ps_wk_cmd()

Fixes: 15865124feed ("staging: r8188eu: introduce new core dir for RTL8188eu driver")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
  drivers/staging/r8188eu/core/rtw_p2p.c | 4 ++--
  1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/r8188eu/core/rtw_p2p.c b/drivers/staging/r8188eu/core/rtw_p2p.c
index b4497444a7af..04480a86902e 100644
--- a/drivers/staging/r8188eu/core/rtw_p2p.c
+++ b/drivers/staging/r8188eu/core/rtw_p2p.c
@@ -1697,13 +1697,13 @@ u8 p2p_ps_wk_cmd(struct adapter *padapter, u8 p2p_ps_state, u8 enqueue)
  		return res;
if (enqueue) {
-		ph2c = kzalloc(sizeof(struct cmd_obj), GFP_KERNEL);
+		ph2c = kzalloc(sizeof(struct cmd_obj), GFP_ATOMIC);
  		if (!ph2c) {
  			res = _FAIL;
  			goto exit;
  		}
- pdrvextra_cmd_parm = kzalloc(sizeof(struct drvextra_cmd_parm), GFP_KERNEL);
+		pdrvextra_cmd_parm = kzalloc(sizeof(struct drvextra_cmd_parm), GFP_ATOMIC);
  		if (!pdrvextra_cmd_parm) {
  			kfree(ph2c);
  			res = _FAIL;

Acked-by: Larry Finger <Larry.Finger@xxxxxxxxxxxx>

Thanks,

Larry





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