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Bluetooth: hci_uart: add missing NULL check in h5_enqueue
[ Upstream commit32cb08e958
] Syzbot hit general protection fault in __pm_runtime_resume(). The problem was in missing NULL check. hu->serdev can be NULL and we should not blindly pass &serdev->dev somewhere, since it will cause GPF. Reported-by: syzbot+b9bd12fbed3485a3e51f@syzkaller.appspotmail.com Fixes:d9dd833cf6
("Bluetooth: hci_h5: Add runtime suspend") Signed-off-by: Pavel Skripkin <paskripkin@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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1 changed files with 5 additions and 3 deletions
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@ -629,9 +629,11 @@ static int h5_enqueue(struct hci_uart *hu, struct sk_buff *skb)
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break;
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}
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if (hu->serdev) {
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pm_runtime_get_sync(&hu->serdev->dev);
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pm_runtime_mark_last_busy(&hu->serdev->dev);
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pm_runtime_put_autosuspend(&hu->serdev->dev);
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}
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return 0;
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}
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