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| author | Dan Carpenter <dan.carpenter@linaro.org> | 2025-03-10 22:46:56 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-03-28 21:59:00 +0100 |
| commit | 788ae2ae4cf484e248b5bc29211c7ac6510e3e92 (patch) | |
| tree | ac58363237747d5255027a47ad0155b3249fdc90 /net | |
| parent | 2c160e6868eaf30a010843f78fb8182544802f06 (diff) | |
| download | linux-788ae2ae4cf484e248b5bc29211c7ac6510e3e92.tar.gz linux-788ae2ae4cf484e248b5bc29211c7ac6510e3e92.tar.bz2 linux-788ae2ae4cf484e248b5bc29211c7ac6510e3e92.zip | |
Bluetooth: Fix error code in chan_alloc_skb_cb()
[ Upstream commit 72d061ee630d0dbb45c2920d8d19b3861c413e54 ]
The chan_alloc_skb_cb() function is supposed to return error pointers on
error. Returning NULL will lead to a NULL dereference.
Fixes: 6b8d4a6a0314 ("Bluetooth: 6LoWPAN: Use connected oriented channel instead of fixed one")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/bluetooth/6lowpan.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/net/bluetooth/6lowpan.c b/net/bluetooth/6lowpan.c index 4eb1b3ced0d2..db119071a0ea 100644 --- a/net/bluetooth/6lowpan.c +++ b/net/bluetooth/6lowpan.c @@ -825,11 +825,16 @@ static struct sk_buff *chan_alloc_skb_cb(struct l2cap_chan *chan, unsigned long hdr_len, unsigned long len, int nb) { + struct sk_buff *skb; + /* Note that we must allocate using GFP_ATOMIC here as * this function is called originally from netdev hard xmit * function in atomic context. */ - return bt_skb_alloc(hdr_len + len, GFP_ATOMIC); + skb = bt_skb_alloc(hdr_len + len, GFP_ATOMIC); + if (!skb) + return ERR_PTR(-ENOMEM); + return skb; } static void chan_suspend_cb(struct l2cap_chan *chan) |