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patch "staging: r8188eu: use GFP_ATOMIC under spinlock" added to staging-linus

PATCH [email protected] 1 participant 1 message Nov 15, 2021

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This is a note to let you know that I've just added the patch titled

staging: r8188eu: use GFP_ATOMIC under spinlock

to my staging git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
in the staging-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From 4a293eaf92a510ff688dc7b3f0815221f99c9d1b Mon Sep 17 00:00:00 2001
From: Michael Straube <[email protected]>
Date: Mon, 8 Nov 2021 11:55:37 +0100
Subject: staging: r8188eu: use GFP_ATOMIC under spinlock

In function rtw_report_sec_ie() kzalloc() is called under a spinlock, so the allocation have to be atomic.

Call tree:

-> rtw_select_and_join_from_scanned_queue() <- takes a spinlock
-> rtw_joinbss_cmd()

      -> rtw_restruct_sec_ie()
         -> rtw_report_sec_ie()
Fixes 2b42bd58b321 ("staging: r8188eu: introduce new os_dep dir for RTL8188eu driver")
Cc stable <[email protected]>
---
 drivers/staging/r8188eu/os_dep/mlme_linux.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/staging/r8188eu/os_dep/mlme_linux.c +1 -1
index a9b6ffdbf31a..f7ce724ebf87 100644
@@ -112,7 +112,7 @@ void rtw_report_sec_ie(struct adapter *adapter, u8 authmode, u8 *sec_ie)
 
 	buff = NULL;
 	if (authmode == _WPA_IE_ID_) {
-		buff = kzalloc(IW_CUSTOM_MAX, GFP_KERNEL);
+		buff = kzalloc(IW_CUSTOM_MAX, GFP_ATOMIC);
 		if (!buff)
 			return;
 		p = buff;
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2.33.1