lkml.org 
[lkml]   [2023]   [Nov]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH] Bluetooth: hci_bcm4377: Fix msgid release
On Tue, Nov 14, 2023 at 2:05 AM Hector Martin <marcan@marcan.st> wrote:
>
> We are releasing a single msgid, so the order argument to
> bitmap_release_region must be zero.
>
> In practice this was probably harmlessly masked to 0 anyway, which is
> why it worked, but it trips ubsan.
>
> Fixes: 8a06127602de ("Bluetooth: hci_bcm4377: Add new driver for BCM4377 PCIe boards")
> Reported-by: Aditya Garg <gargaditya08@live.com>
> Cc: stable@vger.kernel.org
> Signed-off-by: Hector Martin <marcan@marcan.st>
> ---
> drivers/bluetooth/hci_bcm4377.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/bluetooth/hci_bcm4377.c b/drivers/bluetooth/hci_bcm4377.c
> index 19ad0e788646..5e9f79235cde 100644
> --- a/drivers/bluetooth/hci_bcm4377.c
> +++ b/drivers/bluetooth/hci_bcm4377.c
> @@ -715,7 +715,7 @@ static void bcm4377_handle_ack(struct bcm4377_data *bcm4377,
> ring->events[msgid] = NULL;
> }
>
> - bitmap_release_region(ring->msgids, msgid, ring->n_entries);
> + bitmap_release_region(ring->msgids, msgid, 0);
>
> unlock:
> spin_unlock_irqrestore(&ring->lock, flags);
>
> ---
> base-commit: ffc253263a1375a65fa6c9f62a893e9767fbebfa
> change-id: 20231114-bluetooth-msgid-fix-29769be7e45b
>
> Best regards,
> --
> Hector Martin <marcan@marcan.st>
>
>

LGTM.

Reviewed-by: Neal Gompa <neal@gompa.dev>


--
真実はいつも一つ!/ Always, there's only one truth!

\
 
 \ /
  Last update: 2023-11-20 13:59    [W:0.045 / U:0.112 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site