lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [day] [month] [year] [list]
Message-Id: <20210819092423.4349-1-straube.linux@gmail.com>
Date:   Thu, 19 Aug 2021 11:24:23 +0200
From:   Michael Straube <straube.linux@...il.com>
To:     gregkh@...uxfoundation.org
Cc:     Larry.Finger@...inger.net, phil@...lpotter.co.uk, martin@...ser.cx,
        fmdefrancesco@...il.com, linux-staging@...ts.linux.dev,
        linux-kernel@...r.kernel.org,
        Michael Straube <straube.linux@...il.com>
Subject: [PATCH v3] staging: r8188eu: fix scheduling while atomic bugs

These allocations are sometimes done under a spin lock so they
have to be atomic. The function call tree is:

-> update_beacon() <- takes a spin lock
   -> update_BCNTIM()
      -> set_tx_beacon_cmd()

Fixes: 79f712ea994de ("staging: r8188eu: Remove wrappers for kalloc() and kzalloc()")
Signed-off-by: Michael Straube <straube.linux@...il.com>
---
v1 -> v2
Added Fixes: tag to commit message.

v2 -> v3
Correted the commit in the Fixes: tag.

 drivers/staging/r8188eu/core/rtw_mlme_ext.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/r8188eu/core/rtw_mlme_ext.c b/drivers/staging/r8188eu/core/rtw_mlme_ext.c
index 5325fe41fbee..508ef1d330a1 100644
--- a/drivers/staging/r8188eu/core/rtw_mlme_ext.c
+++ b/drivers/staging/r8188eu/core/rtw_mlme_ext.c
@@ -8130,13 +8130,13 @@ u8 set_tx_beacon_cmd(struct adapter *padapter)
 	u8 res = _SUCCESS;
 	int len_diff = 0;
 
-	ph2c = kzalloc(sizeof(struct cmd_obj), GFP_KERNEL);
+	ph2c = kzalloc(sizeof(struct cmd_obj), GFP_ATOMIC);
 	if (!ph2c) {
 		res = _FAIL;
 		goto exit;
 	}
 
-	ptxBeacon_parm = kzalloc(sizeof(struct Tx_Beacon_param), GFP_KERNEL);
+	ptxBeacon_parm = kzalloc(sizeof(struct Tx_Beacon_param), GFP_ATOMIC);
 	if (!ptxBeacon_parm) {
 		kfree(ph2c);
 		res = _FAIL;
-- 
2.32.0

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ