* [PATCH] wifi: ath6kl: reduce WARN to dev_dbg() in callback
@ 2023-01-26 18:24 Fedor Pchelkin
2023-02-27 12:19 ` Kalle Valo
0 siblings, 1 reply; 2+ messages in thread
From: Fedor Pchelkin @ 2023-01-26 18:24 UTC (permalink / raw)
To: Kalle Valo
Cc: Fedor Pchelkin, David S. Miller, Eric Dumazet, Jakub Kicinski,
Paolo Abeni, Alexey Khoroshilov, Oliver Neukum,
Mohammed Shafi Shajakhan, linux-wireless, netdev, linux-kernel,
lvc-project, syzbot+555908813b2ea35dae9a
The warn is triggered on a known race condition that is correctly handled.
Using WARN() hinders automated testing. Reducing severity.
Fixes: de2070fc4aa7 ("ath6kl: Fix kernel panic on continuous driver load/unload")
Reported-and-tested-by: syzbot+555908813b2ea35dae9a@syzkaller.appspotmail.com
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
---
drivers/net/wireless/ath/ath6kl/htc_pipe.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ath/ath6kl/htc_pipe.c b/drivers/net/wireless/ath/ath6kl/htc_pipe.c
index c68848819a52..9b88d96bfe96 100644
--- a/drivers/net/wireless/ath/ath6kl/htc_pipe.c
+++ b/drivers/net/wireless/ath/ath6kl/htc_pipe.c
@@ -960,8 +960,8 @@ static int ath6kl_htc_pipe_rx_complete(struct ath6kl *ar, struct sk_buff *skb,
* Thus the possibility of ar->htc_target being NULL
* via ath6kl_recv_complete -> ath6kl_usb_io_comp_work.
*/
- if (WARN_ON_ONCE(!target)) {
- ath6kl_err("Target not yet initialized\n");
+ if (!target) {
+ ath6kl_dbg(ATH6KL_DBG_HTC, "Target not yet initialized\n");
status = -EINVAL;
goto free_skb;
}
--
2.34.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] wifi: ath6kl: reduce WARN to dev_dbg() in callback
2023-01-26 18:24 [PATCH] wifi: ath6kl: reduce WARN to dev_dbg() in callback Fedor Pchelkin
@ 2023-02-27 12:19 ` Kalle Valo
0 siblings, 0 replies; 2+ messages in thread
From: Kalle Valo @ 2023-02-27 12:19 UTC (permalink / raw)
To: Fedor Pchelkin
Cc: Fedor Pchelkin, David S. Miller, Eric Dumazet, Jakub Kicinski,
Paolo Abeni, Alexey Khoroshilov, Oliver Neukum,
Mohammed Shafi Shajakhan, linux-wireless, netdev, linux-kernel,
lvc-project, syzbot+555908813b2ea35dae9a
Fedor Pchelkin <pchelkin@ispras.ru> wrote:
> The warn is triggered on a known race condition, documented in the code above
> the test, that is correctly handled. Using WARN() hinders automated testing.
> Reducing severity.
>
> Fixes: de2070fc4aa7 ("ath6kl: Fix kernel panic on continuous driver load/unload")
> Reported-and-tested-by: syzbot+555908813b2ea35dae9a@syzkaller.appspotmail.com
> Signed-off-by: Oliver Neukum <oneukum@suse.com>
> Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
> Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
> Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Patch applied to ath-next branch of ath.git, thanks.
75c4a8154cb6 wifi: ath6kl: reduce WARN to dev_dbg() in callback
--
https://patchwork.kernel.org/project/linux-wireless/patch/20230126182431.867984-1-pchelkin@ispras.ru/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
^ permalink raw reply [flat|nested] 2+ messages in thread
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2023-02-27 12:19 ` Kalle Valo
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