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Date: Sat, 7 Mar 2020 21:58:08 +0800 From: Qiujun Huang <hqjagain@...il.com> To: marcel@...tmann.org Cc: johan.hedberg@...il.com, davem@...emloft.net, kuba@...nel.org, linux-bluetooth@...r.kernel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, Qiujun Huang <hqjagain@...il.com> Subject: [PATCH] bluetooth/rfcomm: fix ODEBUG bug in rfcomm_dev_ioctl Needn't call 'rfcomm_dlc_put' here, because 'rfcomm_dlc_exists' didn't increase dlc->refcnt. Reported-by: syzbot+4496e82090657320efc6@...kaller.appspotmail.com Signed-off-by: Qiujun Huang <hqjagain@...il.com> --- net/bluetooth/rfcomm/tty.c | 1 - 1 file changed, 1 deletion(-) diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c index 0c7d31c..ea2a1df0 100644 --- a/net/bluetooth/rfcomm/tty.c +++ b/net/bluetooth/rfcomm/tty.c @@ -414,7 +414,6 @@ static int __rfcomm_create_dev(struct sock *sk, void __user *arg) if (IS_ERR(dlc)) return PTR_ERR(dlc); else if (dlc) { - rfcomm_dlc_put(dlc); return -EBUSY; } dlc = rfcomm_dlc_alloc(GFP_KERNEL); -- 1.8.3.1
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