Re: [syzbot] Re: [syzbot] [bluetooth?] general protection fault in bcsp_recv

From: syzbot
Date: Sun Jun 29 2025 - 23:04:05 EST


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Subject: Re: [syzbot] [bluetooth?] general protection fault in bcsp_recv
Author: ipravdin.official@xxxxxxxxx

#syz test

diff --git a/drivers/bluetooth/hci_bcsp.c b/drivers/bluetooth/hci_bcsp.c
index 610d0e3c36d4..de9a6ed3a8aa 100644
--- a/drivers/bluetooth/hci_bcsp.c
+++ b/drivers/bluetooth/hci_bcsp.c
@@ -739,8 +739,6 @@ static int bcsp_close(struct hci_uart *hu)

timer_shutdown_sync(&bcsp->tbcsp);

- hu->priv = NULL;
-
BT_DBG("hu %p", hu);

skb_queue_purge(&bcsp->unack);
@@ -753,6 +751,8 @@ static int bcsp_close(struct hci_uart *hu)
}

kfree(bcsp);
+ hu->priv = NULL;
+
return 0;
}

Ivan Pravdin