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commit96c155943aupstream. In lan8814_get_sig_rx() and lan8814_get_sig_tx() ptp_parse_header() may return NULL as ptp_header due to abnormal packet type or corrupted packet. Fix this bug by adding ptp_header check. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes:ece1950283("net: phy: micrel: 1588 support for LAN8814 phy") Signed-off-by: Aleksandr Mishin <amishin@t-argos.ru> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://lore.kernel.org/r/20240329061631.33199-1-amishin@t-argos.ru Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>